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Teach zpool scrub to scrub only blocks in error log

Browse Source 
Added a flag '-e' in zpool scrub to scrub only blocks in error log. A
user can pause, resume and cancel the error scrub by passing additional
command line arguments -p -s just like a regular scrub. This involves
adding a new flag, creating new libzfs interfaces, a new ioctl, and the
actual iteration and read-issuing logic. Error scrubbing is executed in
multiple txg to make sure pool performance is not affected.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Co-authored-by: TulsiJain tulsi.jain@delphix.com
Signed-off-by: George Amanakis <gamanakis@gmail.com>
Closes #8995
Closes #12355
This commit is contained in:
George Amanakis 2021-12-17 21:35:28 +01:00 committed by Brian Behlendorf
parent e34e15ed6d
commit 482eeef804
29 changed files with 1602 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

111
cmd/zpool/zpool_main.c
View File

@ -401,7 +401,7 @@ get_usage(zpool_help_t idx)
return (gettext("\tinitialize [-c | -s | -u] [-w] <pool> " return (gettext("\tinitialize [-c | -s | -u] [-w] <pool> "
"[<device> ...]\n")); "[<device> ...]\n"));
case HELP_SCRUB: case HELP_SCRUB:
return (gettext("\tscrub [-s | -p] [-w] <pool> ...\n")); return (gettext("\tscrub [-s | -p] [-w] [-e] <pool> ...\n"));
case HELP_RESILVER: case HELP_RESILVER:
return (gettext("\tresilver <pool> ...\n")); return (gettext("\tresilver <pool> ...\n"));
case HELP_TRIM: case HELP_TRIM:
@ -7309,8 +7309,9 @@ wait_callback(zpool_handle_t *zhp, void *data)
} }
/* /*
* zpool scrub [-s | -p] [-w] <pool> ... * zpool scrub [-s | -p] [-w] [-e] <pool> ...
* *
* -e Only scrub blocks in the error log.
* -s Stop. Stops any in-progress scrub. * -s Stop. Stops any in-progress scrub.
* -p Pause. Pause in-progress scrub. * -p Pause. Pause in-progress scrub.
* -w Wait. Blocks until scrub has completed. * -w Wait. Blocks until scrub has completed.
@ -7326,14 +7327,21 @@ zpool_do_scrub(int argc, char **argv)
cb.cb_type = POOL_SCAN_SCRUB; cb.cb_type = POOL_SCAN_SCRUB;
cb.cb_scrub_cmd = POOL_SCRUB_NORMAL; cb.cb_scrub_cmd = POOL_SCRUB_NORMAL;
boolean_t is_error_scrub = B_FALSE;
boolean_t is_pause = B_FALSE;
boolean_t is_stop = B_FALSE;
/* check options */ /* check options */
while ((c = getopt(argc, argv, "spw")) != -1) { while ((c = getopt(argc, argv, "spwe")) != -1) {
switch (c) { switch (c) {
case 'e':
is_error_scrub = B_TRUE;
break;
case 's': case 's':
cb.cb_type = POOL_SCAN_NONE; is_stop = B_TRUE;
break; break;
case 'p': case 'p':
cb.cb_scrub_cmd = POOL_SCRUB_PAUSE; is_pause = B_TRUE;
break; break;
case 'w': case 'w':
wait = B_TRUE; wait = B_TRUE;
@ -7345,11 +7353,21 @@ zpool_do_scrub(int argc, char **argv)
} }
} }
if (cb.cb_type == POOL_SCAN_NONE && if (is_pause && is_stop) {
cb.cb_scrub_cmd == POOL_SCRUB_PAUSE) { (void) fprintf(stderr, gettext("invalid option "
(void) fprintf(stderr, gettext("invalid option combination: " "combination :-s and -p are mutually exclusive\n"));
"-s and -p are mutually exclusive\n"));
usage(B_FALSE); usage(B_FALSE);
} else {
if (is_error_scrub)
cb.cb_type = POOL_SCAN_ERRORSCRUB;
if (is_pause) {
cb.cb_scrub_cmd = POOL_SCRUB_PAUSE;
} else if (is_stop) {
cb.cb_type = POOL_SCAN_NONE;
} else {
cb.cb_scrub_cmd = POOL_SCRUB_NORMAL;
}
} }
if (wait && (cb.cb_type == POOL_SCAN_NONE || if (wait && (cb.cb_type == POOL_SCAN_NONE ||
@ -7573,6 +7591,70 @@ secs_to_dhms(uint64_t total, char *buf)
} }
} }
/*
* Print out detailed error scrub status.
*/
static void
print_err_scrub_status(pool_scan_stat_t *ps)
{
time_t start, end, pause;
uint64_t total_secs_left;
uint64_t secs_left, mins_left, hours_left, days_left;
uint64_t examined, to_be_examined;
if (ps == NULL || ps->pss_error_scrub_func != POOL_SCAN_ERRORSCRUB) {
return;
}
(void) printf(gettext(" scrub: "));
start = ps->pss_error_scrub_start;
end = ps->pss_error_scrub_end;
pause = ps->pss_pass_error_scrub_pause;
examined = ps->pss_error_scrub_examined;
to_be_examined = ps->pss_error_scrub_to_be_examined;
assert(ps->pss_error_scrub_func == POOL_SCAN_ERRORSCRUB);
if (ps->pss_error_scrub_state == DSS_FINISHED) {
total_secs_left = end - start;
days_left = total_secs_left / 60 / 60 / 24;
hours_left = (total_secs_left / 60 / 60) % 24;
mins_left = (total_secs_left / 60) % 60;
secs_left = (total_secs_left % 60);
(void) printf(gettext("scrubbed %llu error blocks in %llu days "
"%02llu:%02llu:%02llu on %s"), (u_longlong_t)examined,
(u_longlong_t)days_left, (u_longlong_t)hours_left,
(u_longlong_t)mins_left, (u_longlong_t)secs_left,
ctime(&end));
return;
} else if (ps->pss_error_scrub_state == DSS_CANCELED) {
(void) printf(gettext("error scrub canceled on %s"),
ctime(&end));
return;
}
assert(ps->pss_error_scrub_state == DSS_ERRORSCRUBBING);
/* Error scrub is in progress. */
if (pause == 0) {
(void) printf(gettext("error scrub in progress since %s"),
ctime(&start));
} else {
(void) printf(gettext("error scrub paused since %s"),
ctime(&pause));
(void) printf(gettext("\terror scrub started on %s"),
ctime(&start));
}
double fraction_done = (double)examined / (to_be_examined + examined);
(void) printf(gettext("\t%.2f%% done, issued I/O for %llu error"
" blocks"), 100 * fraction_done, (u_longlong_t)examined);
(void) printf("\n");
}
/* /*
* Print out detailed scrub status. * Print out detailed scrub status.
*/ */
@ -7909,10 +7991,12 @@ print_scan_status(zpool_handle_t *zhp, nvlist_t *nvroot)
{ {
uint64_t rebuild_end_time = 0, resilver_end_time = 0; uint64_t rebuild_end_time = 0, resilver_end_time = 0;
boolean_t have_resilver = B_FALSE, have_scrub = B_FALSE; boolean_t have_resilver = B_FALSE, have_scrub = B_FALSE;
boolean_t have_errorscrub = B_FALSE;
boolean_t active_resilver = B_FALSE; boolean_t active_resilver = B_FALSE;
pool_checkpoint_stat_t *pcs = NULL; pool_checkpoint_stat_t *pcs = NULL;
pool_scan_stat_t *ps = NULL; pool_scan_stat_t *ps = NULL;
uint_t c; uint_t c;
time_t scrub_start = 0, errorscrub_start = 0;
if (nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_SCAN_STATS, if (nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_SCAN_STATS,
(uint64_t **)&ps, &c) == 0) { (uint64_t **)&ps, &c) == 0) {
@ -7921,16 +8005,23 @@ print_scan_status(zpool_handle_t *zhp, nvlist_t *nvroot)
active_resilver = (ps->pss_state == DSS_SCANNING); active_resilver = (ps->pss_state == DSS_SCANNING);
} }
have_resilver = (ps->pss_func == POOL_SCAN_RESILVER); have_resilver = (ps->pss_func == POOL_SCAN_RESILVER);
have_scrub = (ps->pss_func == POOL_SCAN_SCRUB); have_scrub = (ps->pss_func == POOL_SCAN_SCRUB);
scrub_start = ps->pss_start_time;
have_errorscrub = (ps->pss_error_scrub_func ==
POOL_SCAN_ERRORSCRUB);
errorscrub_start = ps->pss_error_scrub_start;
} }
boolean_t active_rebuild = check_rebuilding(nvroot, &rebuild_end_time); boolean_t active_rebuild = check_rebuilding(nvroot, &rebuild_end_time);
boolean_t have_rebuild = (active_rebuild || (rebuild_end_time > 0)); boolean_t have_rebuild = (active_rebuild || (rebuild_end_time > 0));
/* Always print the scrub status when available. */ /* Always print the scrub status when available. */
if (have_scrub) if (have_scrub && scrub_start > errorscrub_start)
print_scan_scrub_resilver_status(ps); print_scan_scrub_resilver_status(ps);
else if (have_errorscrub && errorscrub_start >= scrub_start)
print_err_scrub_status(ps);
/* /*
* When there is an active resilver or rebuild print its status. * When there is an active resilver or rebuild print its status.

3
include/libzfs.h
View File

@ -125,11 +125,14 @@ typedef enum zfs_error {
EZFS_THREADCREATEFAILED, /* thread create failed */ EZFS_THREADCREATEFAILED, /* thread create failed */
EZFS_POSTSPLIT_ONLINE, /* onlining a disk after splitting it */ EZFS_POSTSPLIT_ONLINE, /* onlining a disk after splitting it */
EZFS_SCRUBBING, /* currently scrubbing */ EZFS_SCRUBBING, /* currently scrubbing */
EZFS_ERRORSCRUBBING, /* currently error scrubbing */
EZFS_ERRORSCRUB_PAUSED, /* error scrub currently paused */
EZFS_NO_SCRUB, /* no active scrub */ EZFS_NO_SCRUB, /* no active scrub */
EZFS_DIFF, /* general failure of zfs diff */ EZFS_DIFF, /* general failure of zfs diff */
EZFS_DIFFDATA, /* bad zfs diff data */ EZFS_DIFFDATA, /* bad zfs diff data */
EZFS_POOLREADONLY, /* pool is in read-only mode */ EZFS_POOLREADONLY, /* pool is in read-only mode */
EZFS_SCRUB_PAUSED, /* scrub currently paused */ EZFS_SCRUB_PAUSED, /* scrub currently paused */
EZFS_SCRUB_PAUSED_TO_CANCEL, /* scrub currently paused */
EZFS_ACTIVE_POOL, /* pool is imported on a different system */ EZFS_ACTIVE_POOL, /* pool is imported on a different system */
EZFS_CRYPTOFAILED, /* failed to setup encryption */ EZFS_CRYPTOFAILED, /* failed to setup encryption */
EZFS_NO_PENDING, /* cannot cancel, no operation is pending */ EZFS_NO_PENDING, /* cannot cancel, no operation is pending */

2
include/libzfs_core.h
View File

@ -155,6 +155,8 @@ _LIBZFS_CORE_H int lzc_get_bootenv(const char *, nvlist_t **);
_LIBZFS_CORE_H int lzc_get_vdev_prop(const char *, nvlist_t *, nvlist_t **); _LIBZFS_CORE_H int lzc_get_vdev_prop(const char *, nvlist_t *, nvlist_t **);
_LIBZFS_CORE_H int lzc_set_vdev_prop(const char *, nvlist_t *, nvlist_t **); _LIBZFS_CORE_H int lzc_set_vdev_prop(const char *, nvlist_t *, nvlist_t **);
_LIBZFS_CORE_H int lzc_scrub(zfs_ioc_t, const char *, nvlist_t *, nvlist_t **);
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif #endif

1
include/sys/dmu.h
View File

@ -378,6 +378,7 @@ typedef struct dmu_buf {
#define DMU_POOL_DDT_STATS "DDT-statistics" #define DMU_POOL_DDT_STATS "DDT-statistics"
#define DMU_POOL_CREATION_VERSION "creation_version" #define DMU_POOL_CREATION_VERSION "creation_version"
#define DMU_POOL_SCAN "scan" #define DMU_POOL_SCAN "scan"
#define DMU_POOL_ERRORSCRUB "error_scrub"
#define DMU_POOL_FREE_BPOBJ "free_bpobj" #define DMU_POOL_FREE_BPOBJ "free_bpobj"
#define DMU_POOL_BPTREE_OBJ "bptree_obj" #define DMU_POOL_BPTREE_OBJ "bptree_obj"
#define DMU_POOL_EMPTY_BPOBJ "empty_bpobj" #define DMU_POOL_EMPTY_BPOBJ "empty_bpobj"

27
include/sys/dsl_scan.h
View File

@ -29,6 +29,7 @@
#include <sys/zfs_context.h> #include <sys/zfs_context.h>
#include <sys/zio.h> #include <sys/zio.h>
#include <sys/zap.h>
#include <sys/ddt.h> #include <sys/ddt.h>
#include <sys/bplist.h> #include <sys/bplist.h>
@ -78,6 +79,21 @@ typedef enum dsl_scan_flags {
#define DSL_SCAN_FLAGS_MASK (DSF_VISIT_DS_AGAIN) #define DSL_SCAN_FLAGS_MASK (DSF_VISIT_DS_AGAIN)
typedef struct dsl_errorscrub_phys {
uint64_t dep_func; /* pool_scan_func_t */
uint64_t dep_state; /* dsl_scan_state_t */
uint64_t dep_cursor; /* serialized zap cursor for tracing progress */
uint64_t dep_start_time; /* error scrub start time, unix timestamp */
uint64_t dep_end_time; /* error scrub end time, unix timestamp */
uint64_t dep_to_examine; /* total error blocks to be scrubbed */
uint64_t dep_examined; /* blocks scrubbed so far */
uint64_t dep_errors; /* error scrub I/O error count */
uint64_t dep_paused_flags; /* flag for paused */
} dsl_errorscrub_phys_t;
#define ERRORSCRUB_PHYS_NUMINTS (sizeof (dsl_errorscrub_phys_t) \
/ sizeof (uint64_t))
/* /*
* Every pool will have one dsl_scan_t and this structure will contain * Every pool will have one dsl_scan_t and this structure will contain
* in-memory information about the scan and a pointer to the on-disk * in-memory information about the scan and a pointer to the on-disk
@ -151,11 +167,15 @@ typedef struct dsl_scan {
uint64_t scn_avg_zio_size_this_txg; uint64_t scn_avg_zio_size_this_txg;
uint64_t scn_zios_this_txg; uint64_t scn_zios_this_txg;
/* zap cursor for tracing error scrub progress */
zap_cursor_t errorscrub_cursor;
/* members needed for syncing scan status to disk */ /* members needed for syncing scan status to disk */
dsl_scan_phys_t scn_phys; /* on disk representation of scan */ dsl_scan_phys_t scn_phys; /* on disk representation of scan */
dsl_scan_phys_t scn_phys_cached; dsl_scan_phys_t scn_phys_cached;
avl_tree_t scn_queue; /* queue of datasets to scan */ avl_tree_t scn_queue; /* queue of datasets to scan */
uint64_t scn_queues_pending; /* outstanding data to issue */ uint64_t scn_queues_pending; /* outstanding data to issue */
/* members needed for syncing error scrub status to disk */
dsl_errorscrub_phys_t errorscrub_phys;
} dsl_scan_t; } dsl_scan_t;
typedef struct dsl_scan_io_queue dsl_scan_io_queue_t; typedef struct dsl_scan_io_queue dsl_scan_io_queue_t;
@ -171,8 +191,12 @@ int dsl_scan_cancel(struct dsl_pool *);
int dsl_scan(struct dsl_pool *, pool_scan_func_t); int dsl_scan(struct dsl_pool *, pool_scan_func_t);
void dsl_scan_assess_vdev(struct dsl_pool *dp, vdev_t *vd); void dsl_scan_assess_vdev(struct dsl_pool *dp, vdev_t *vd);
boolean_t dsl_scan_scrubbing(const struct dsl_pool *dp); boolean_t dsl_scan_scrubbing(const struct dsl_pool *dp);
int dsl_scrub_set_pause_resume(const struct dsl_pool *dp, pool_scrub_cmd_t cmd); boolean_t dsl_errorscrubbing(const struct dsl_pool *dp);
boolean_t dsl_errorscrub_active(dsl_scan_t *scn);
void dsl_scan_restart_resilver(struct dsl_pool *, uint64_t txg); void dsl_scan_restart_resilver(struct dsl_pool *, uint64_t txg);
int dsl_scrub_set_pause_resume(const struct dsl_pool *dp,
pool_scrub_cmd_t cmd);
void dsl_errorscrub_sync(struct dsl_pool *, dmu_tx_t *);
boolean_t dsl_scan_resilvering(struct dsl_pool *dp); boolean_t dsl_scan_resilvering(struct dsl_pool *dp);
boolean_t dsl_scan_resilver_scheduled(struct dsl_pool *dp); boolean_t dsl_scan_resilver_scheduled(struct dsl_pool *dp);
boolean_t dsl_dataset_unstable(struct dsl_dataset *ds); boolean_t dsl_dataset_unstable(struct dsl_dataset *ds);
@ -184,6 +208,7 @@ void dsl_scan_ds_clone_swapped(struct dsl_dataset *ds1, struct dsl_dataset *ds2,
struct dmu_tx *tx); struct dmu_tx *tx);
boolean_t dsl_scan_active(dsl_scan_t *scn); boolean_t dsl_scan_active(dsl_scan_t *scn);
boolean_t dsl_scan_is_paused_scrub(const dsl_scan_t *scn); boolean_t dsl_scan_is_paused_scrub(const dsl_scan_t *scn);
boolean_t dsl_errorscrub_is_paused(const dsl_scan_t *scn);
void dsl_scan_freed(spa_t *spa, const blkptr_t *bp); void dsl_scan_freed(spa_t *spa, const blkptr_t *bp);
void dsl_scan_io_queue_destroy(dsl_scan_io_queue_t *queue); void dsl_scan_io_queue_destroy(dsl_scan_io_queue_t *queue);
void dsl_scan_io_queue_vdev_xfer(vdev_t *svd, vdev_t *tvd); void dsl_scan_io_queue_vdev_xfer(vdev_t *svd, vdev_t *tvd);

19
include/sys/fs/zfs.h
View File

@ -1036,6 +1036,7 @@ typedef enum pool_scan_func {
POOL_SCAN_NONE, POOL_SCAN_NONE,
POOL_SCAN_SCRUB, POOL_SCAN_SCRUB,
POOL_SCAN_RESILVER, POOL_SCAN_RESILVER,
POOL_SCAN_ERRORSCRUB,
POOL_SCAN_FUNCS POOL_SCAN_FUNCS
} pool_scan_func_t; } pool_scan_func_t;
@ -1099,6 +1100,20 @@ typedef struct pool_scan_stat {
uint64_t pss_pass_scrub_spent_paused; uint64_t pss_pass_scrub_spent_paused;
uint64_t pss_pass_issued; /* issued bytes per scan pass */ uint64_t pss_pass_issued; /* issued bytes per scan pass */
uint64_t pss_issued; /* total bytes checked by scanner */ uint64_t pss_issued; /* total bytes checked by scanner */
/* error scrub values stored on disk */
uint64_t pss_error_scrub_func; /* pool_scan_func_t */
uint64_t pss_error_scrub_state; /* dsl_scan_state_t */
uint64_t pss_error_scrub_start; /* error scrub start time */
uint64_t pss_error_scrub_end; /* error scrub end time */
uint64_t pss_error_scrub_examined; /* error blocks issued I/O */
/* error blocks to be issued I/O */
uint64_t pss_error_scrub_to_be_examined;
/* error scrub values not stored on disk */
/* error scrub pause time in milliseconds */
uint64_t pss_pass_error_scrub_pause;
} pool_scan_stat_t; } pool_scan_stat_t;
typedef struct pool_removal_stat { typedef struct pool_removal_stat {
@ -1120,6 +1135,7 @@ typedef enum dsl_scan_state {
DSS_SCANNING, DSS_SCANNING,
DSS_FINISHED, DSS_FINISHED,
DSS_CANCELED, DSS_CANCELED,
DSS_ERRORSCRUBBING,
DSS_NUM_STATES DSS_NUM_STATES
} dsl_scan_state_t; } dsl_scan_state_t;
@ -1360,7 +1376,7 @@ typedef enum {
*/ */
typedef enum zfs_ioc { typedef enum zfs_ioc {
/* /*
* Core features - 81/128 numbers reserved. * Core features - 88/128 numbers reserved.
*/ */
#ifdef __FreeBSD__ #ifdef __FreeBSD__
ZFS_IOC_FIRST = 0, ZFS_IOC_FIRST = 0,
@ -1455,6 +1471,7 @@ typedef enum zfs_ioc {
ZFS_IOC_WAIT_FS, /* 0x5a54 */ ZFS_IOC_WAIT_FS, /* 0x5a54 */
ZFS_IOC_VDEV_GET_PROPS, /* 0x5a55 */ ZFS_IOC_VDEV_GET_PROPS, /* 0x5a55 */
ZFS_IOC_VDEV_SET_PROPS, /* 0x5a56 */ ZFS_IOC_VDEV_SET_PROPS, /* 0x5a56 */
ZFS_IOC_POOL_SCRUB, /* 0x5a57 */
/* /*
* Per-platform (Optional) - 8/128 numbers reserved. * Per-platform (Optional) - 8/128 numbers reserved.

8
include/sys/spa.h
View File

@ -1155,6 +1155,7 @@ extern void zfs_post_state_change(spa_t *spa, vdev_t *vd, uint64_t laststate);
extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd); extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd);
extern uint64_t spa_approx_errlog_size(spa_t *spa); extern uint64_t spa_approx_errlog_size(spa_t *spa);
extern int spa_get_errlog(spa_t *spa, void *uaddr, uint64_t *count); extern int spa_get_errlog(spa_t *spa, void *uaddr, uint64_t *count);
extern uint64_t spa_get_last_errlog_size(spa_t *spa);
extern void spa_errlog_rotate(spa_t *spa); extern void spa_errlog_rotate(spa_t *spa);
extern void spa_errlog_drain(spa_t *spa); extern void spa_errlog_drain(spa_t *spa);
extern void spa_errlog_sync(spa_t *spa, uint64_t txg); extern void spa_errlog_sync(spa_t *spa, uint64_t txg);
@ -1165,6 +1166,13 @@ extern void spa_swap_errlog(spa_t *spa, uint64_t new_head_ds,
extern void sync_error_list(spa_t *spa, avl_tree_t *t, uint64_t *obj, extern void sync_error_list(spa_t *spa, avl_tree_t *t, uint64_t *obj,
dmu_tx_t *tx); dmu_tx_t *tx);
extern void spa_upgrade_errlog(spa_t *spa, dmu_tx_t *tx); extern void spa_upgrade_errlog(spa_t *spa, dmu_tx_t *tx);
extern int find_top_affected_fs(spa_t *spa, uint64_t head_ds,
zbookmark_err_phys_t *zep, uint64_t *top_affected_fs);
extern int find_birth_txg(struct dsl_dataset *ds, zbookmark_err_phys_t *zep,
uint64_t *birth_txg);
extern void zep_to_zb(uint64_t dataset, zbookmark_err_phys_t *zep,
zbookmark_phys_t *zb);
extern void name_to_errphys(char *buf, zbookmark_err_phys_t *zep);
/* vdev cache */ /* vdev cache */
extern void vdev_cache_stat_init(void); extern void vdev_cache_stat_init(void);

4
include/sys/spa_impl.h
View File

@ -295,6 +295,10 @@ struct spa {
uint64_t spa_scan_pass_exam; /* examined bytes per pass */ uint64_t spa_scan_pass_exam; /* examined bytes per pass */
uint64_t spa_scan_pass_issued; /* issued bytes per pass */ uint64_t spa_scan_pass_issued; /* issued bytes per pass */
/* error scrub pause time in milliseconds */
uint64_t spa_scan_pass_errorscrub_pause;
/* total error scrub paused time in milliseconds */
uint64_t spa_scan_pass_errorscrub_spent_paused;
/* /*
* We are in the middle of a resilver, and another resilver * We are in the middle of a resilver, and another resilver
* is needed once this one completes. This is set iff any * is needed once this one completes. This is set iff any

5
include/sys/sysevent/eventdefs.h
View File

@ -123,6 +123,11 @@ extern "C" {
#define ESC_ZFS_TRIM_CANCEL "trim_cancel" #define ESC_ZFS_TRIM_CANCEL "trim_cancel"
#define ESC_ZFS_TRIM_RESUME "trim_resume" #define ESC_ZFS_TRIM_RESUME "trim_resume"
#define ESC_ZFS_TRIM_SUSPEND "trim_suspend" #define ESC_ZFS_TRIM_SUSPEND "trim_suspend"
#define ESC_ZFS_ERRORSCRUB_START "errorscrub_start"
#define ESC_ZFS_ERRORSCRUB_FINISH "errorscrub_finish"
#define ESC_ZFS_ERRORSCRUB_ABORT "errorscrub_abort"
#define ESC_ZFS_ERRORSCRUB_RESUME "errorscrub_resume"
#define ESC_ZFS_ERRORSCRUB_PAUSED "errorscrub_paused"
/* /*
* datalink subclass definitions. * datalink subclass definitions.

3
lib/libzfs/libzfs.abi
View File

@ -5717,7 +5717,8 @@
<enumerator name='POOL_SCAN_NONE' value='0'/> <enumerator name='POOL_SCAN_NONE' value='0'/>
<enumerator name='POOL_SCAN_SCRUB' value='1'/> <enumerator name='POOL_SCAN_SCRUB' value='1'/>
<enumerator name='POOL_SCAN_RESILVER' value='2'/> <enumerator name='POOL_SCAN_RESILVER' value='2'/>
<enumerator name='POOL_SCAN_FUNCS' value='3'/> <enumerator name='POOL_SCAN_ERRORSCRUB' value='3'/>
<enumerator name='POOL_SCAN_FUNCS' value='4'/>
</enum-decl> </enum-decl>
<typedef-decl name='pool_scan_func_t' type-id='1b092565' id='7313fbe2'/> <typedef-decl name='pool_scan_func_t' type-id='1b092565' id='7313fbe2'/>
<enum-decl name='pool_scrub_cmd' id='a1474cbd'> <enum-decl name='pool_scrub_cmd' id='a1474cbd'>

101
lib/libzfs/libzfs_pool.c
View File

@ -2648,50 +2648,84 @@ out:
int int
zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func, pool_scrub_cmd_t cmd) zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func, pool_scrub_cmd_t cmd)
{ {
zfs_cmd_t zc = {"\0"};
char errbuf[ERRBUFLEN]; char errbuf[ERRBUFLEN];
int err; int err;
libzfs_handle_t *hdl = zhp->zpool_hdl; libzfs_handle_t *hdl = zhp->zpool_hdl;
(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); nvlist_t *args = fnvlist_alloc();
fnvlist_add_uint64(args, "scan_type", (uint64_t)func);
fnvlist_add_uint64(args, "scan_command", (uint64_t)cmd);
err = lzc_scrub(ZFS_IOC_POOL_SCRUB, zhp->zpool_name, args, NULL);
fnvlist_free(args);
if (err == 0) {
return (0);
} else if (err == ZFS_ERR_IOC_CMD_UNAVAIL) {
zfs_cmd_t zc = {"\0"};
(void) strlcpy(zc.zc_name, zhp->zpool_name,
sizeof (zc.zc_name));
zc.zc_cookie = func; zc.zc_cookie = func;
zc.zc_flags = cmd; zc.zc_flags = cmd;
if (zfs_ioctl(hdl, ZFS_IOC_POOL_SCAN, &zc) == 0) if (zfs_ioctl(hdl, ZFS_IOC_POOL_SCAN, &zc) == 0)
return (0); return (0);
}
err = errno; /*
* An ECANCELED on a scrub means one of the following:
/* ECANCELED on a scrub means we resumed a paused scrub */ * 1. we resumed a paused scrub.
if (err == ECANCELED && func == POOL_SCAN_SCRUB && * 2. we resumed a paused error scrub.
cmd == POOL_SCRUB_NORMAL) * 3. Error scrub is not run because of no error log.
*/
if (err == ECANCELED && (func == POOL_SCAN_SCRUB ||
func == POOL_SCAN_ERRORSCRUB) && cmd == POOL_SCRUB_NORMAL)
return (0); return (0);
/*
if (err == ENOENT && func != POOL_SCAN_NONE && cmd == POOL_SCRUB_NORMAL) * The following cases have been handled here:
* 1. Paused a scrub/error scrub if there is none in progress.
*/
if (err == ENOENT && func != POOL_SCAN_NONE && cmd ==
POOL_SCRUB_PAUSE) {
return (0); return (0);
}
if (func == POOL_SCAN_SCRUB) { ASSERT3U(func, >=, POOL_SCAN_NONE);
ASSERT3U(func, <, POOL_SCAN_FUNCS);
if (func == POOL_SCAN_SCRUB || func == POOL_SCAN_ERRORSCRUB) {
if (cmd == POOL_SCRUB_PAUSE) { if (cmd == POOL_SCRUB_PAUSE) {
(void) snprintf(errbuf, sizeof (errbuf), (void) snprintf(errbuf, sizeof (errbuf),
dgettext(TEXT_DOMAIN, "cannot pause scrubbing %s"), dgettext(TEXT_DOMAIN, "cannot pause scrubbing %s"),
zc.zc_name); zhp->zpool_name);
} else { } else {
assert(cmd == POOL_SCRUB_NORMAL); assert(cmd == POOL_SCRUB_NORMAL);
(void) snprintf(errbuf, sizeof (errbuf), (void) snprintf(errbuf, sizeof (errbuf),
dgettext(TEXT_DOMAIN, "cannot scrub %s"), dgettext(TEXT_DOMAIN, "cannot scrub %s"),
zc.zc_name); zhp->zpool_name);
} }
} else if (func == POOL_SCAN_RESILVER) { } else if (func == POOL_SCAN_RESILVER) {
assert(cmd == POOL_SCRUB_NORMAL); assert(cmd == POOL_SCRUB_NORMAL);
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
"cannot restart resilver on %s"), zc.zc_name); "cannot restart resilver on %s"), zhp->zpool_name);
} else if (func == POOL_SCAN_NONE) { } else if (func == POOL_SCAN_NONE) {
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
"cannot cancel scrubbing %s"), zc.zc_name); "cannot cancel scrubbing %s"), zhp->zpool_name);
} else { } else {
assert(!"unexpected result"); assert(!"unexpected result");
} }
/*
* With EBUSY, five cases are possible:
*
* Current state Requested
* 1. Normal Scrub Running Normal Scrub or Error Scrub
* 2. Normal Scrub Paused Error Scrub
* 3. Normal Scrub Paused Pause Normal Scrub
* 4. Error Scrub Running Normal Scrub or Error Scrub
* 5. Error Scrub Paused Pause Error Scrub
* 6. Resilvering Anything else
*/
if (err == EBUSY) { if (err == EBUSY) {
nvlist_t *nvroot; nvlist_t *nvroot;
pool_scan_stat_t *ps = NULL; pool_scan_stat_t *ps = NULL;
@ -2703,12 +2737,43 @@ zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func, pool_scrub_cmd_t cmd)
ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc); ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc);
if (ps && ps->pss_func == POOL_SCAN_SCRUB && if (ps && ps->pss_func == POOL_SCAN_SCRUB &&
ps->pss_state == DSS_SCANNING) { ps->pss_state == DSS_SCANNING) {
if (cmd == POOL_SCRUB_PAUSE) if (ps->pss_pass_scrub_pause == 0) {
return (zfs_error(hdl, EZFS_SCRUB_PAUSED, /* handles case 1 */
assert(cmd == POOL_SCRUB_NORMAL);
return (zfs_error(hdl, EZFS_SCRUBBING,
errbuf)); errbuf));
else
return (zfs_error(hdl, EZFS_SCRUBBING, errbuf));
} else { } else {
if (func == POOL_SCAN_ERRORSCRUB) {
/* handles case 2 */
ASSERT3U(cmd, ==, POOL_SCRUB_NORMAL);
return (zfs_error(hdl,
EZFS_SCRUB_PAUSED_TO_CANCEL,
errbuf));
} else {
/* handles case 3 */
ASSERT3U(func, ==, POOL_SCAN_SCRUB);
ASSERT3U(cmd, ==, POOL_SCRUB_PAUSE);
return (zfs_error(hdl,
EZFS_SCRUB_PAUSED, errbuf));
}
}
} else if (ps &&
ps->pss_error_scrub_func == POOL_SCAN_ERRORSCRUB &&
ps->pss_error_scrub_state == DSS_ERRORSCRUBBING) {
if (ps->pss_pass_error_scrub_pause == 0) {
/* handles case 4 */
ASSERT3U(cmd, ==, POOL_SCRUB_NORMAL);
return (zfs_error(hdl, EZFS_ERRORSCRUBBING,
errbuf));
} else {
/* handles case 5 */
ASSERT3U(func, ==, POOL_SCAN_ERRORSCRUB);
ASSERT3U(cmd, ==, POOL_SCRUB_PAUSE);
return (zfs_error(hdl, EZFS_ERRORSCRUB_PAUSED,
errbuf));
}
} else {
/* handles case 6 */
return (zfs_error(hdl, EZFS_RESILVERING, errbuf)); return (zfs_error(hdl, EZFS_RESILVERING, errbuf));
} }
} else if (err == ENOENT) { } else if (err == ENOENT) {

14
lib/libzfs/libzfs_util.c
View File

@ -243,10 +243,20 @@ libzfs_error_description(libzfs_handle_t *hdl)
"into a new one")); "into a new one"));
case EZFS_SCRUB_PAUSED: case EZFS_SCRUB_PAUSED:
return (dgettext(TEXT_DOMAIN, "scrub is paused; " return (dgettext(TEXT_DOMAIN, "scrub is paused; "
"use 'zpool scrub' to resume")); "use 'zpool scrub' to resume scrub"));
case EZFS_SCRUB_PAUSED_TO_CANCEL:
return (dgettext(TEXT_DOMAIN, "scrub is paused; "
"use 'zpool scrub' to resume or 'zpool scrub -s' to "
"cancel scrub"));
case EZFS_SCRUBBING: case EZFS_SCRUBBING:
return (dgettext(TEXT_DOMAIN, "currently scrubbing; " return (dgettext(TEXT_DOMAIN, "currently scrubbing; "
"use 'zpool scrub -s' to cancel current scrub")); "use 'zpool scrub -s' to cancel scrub"));
case EZFS_ERRORSCRUBBING:
return (dgettext(TEXT_DOMAIN, "currently error scrubbing; "
"use 'zpool scrub -s' to cancel error scrub"));
case EZFS_ERRORSCRUB_PAUSED:
return (dgettext(TEXT_DOMAIN, "error scrub is paused; "
"use 'zpool scrub -e' to resume error scrub"));
case EZFS_NO_SCRUB: case EZFS_NO_SCRUB:
return (dgettext(TEXT_DOMAIN, "there is no active scrub")); return (dgettext(TEXT_DOMAIN, "there is no active scrub"));
case EZFS_DIFF: case EZFS_DIFF:

105
lib/libzfs_core/libzfs_core.abi
View File

@ -187,6 +187,7 @@
<elf-symbol name='lzc_reopen' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/> <elf-symbol name='lzc_reopen' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_rollback' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/> <elf-symbol name='lzc_rollback' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_rollback_to' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/> <elf-symbol name='lzc_rollback_to' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_scrub' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_send' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/> <elf-symbol name='lzc_send' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_send_redacted' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/> <elf-symbol name='lzc_send_redacted' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_send_resume' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/> <elf-symbol name='lzc_send_resume' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@ -1261,6 +1262,110 @@
<enumerator name='POOL_TRIM_FUNCS' value='3'/> <enumerator name='POOL_TRIM_FUNCS' value='3'/>
</enum-decl> </enum-decl>
<typedef-decl name='pool_trim_func_t' type-id='54ed608a' id='b1146b8d'/> <typedef-decl name='pool_trim_func_t' type-id='54ed608a' id='b1146b8d'/>
<enum-decl name='zfs_ioc' id='12033f13'>
<underlying-type type-id='9cac1fee'/>
<enumerator name='ZFS_IOC_FIRST' value='23040'/>
<enumerator name='ZFS_IOC' value='23040'/>
<enumerator name='ZFS_IOC_POOL_CREATE' value='23040'/>
<enumerator name='ZFS_IOC_POOL_DESTROY' value='23041'/>
<enumerator name='ZFS_IOC_POOL_IMPORT' value='23042'/>
<enumerator name='ZFS_IOC_POOL_EXPORT' value='23043'/>
<enumerator name='ZFS_IOC_POOL_CONFIGS' value='23044'/>
<enumerator name='ZFS_IOC_POOL_STATS' value='23045'/>
<enumerator name='ZFS_IOC_POOL_TRYIMPORT' value='23046'/>
<enumerator name='ZFS_IOC_POOL_SCAN' value='23047'/>
<enumerator name='ZFS_IOC_POOL_FREEZE' value='23048'/>
<enumerator name='ZFS_IOC_POOL_UPGRADE' value='23049'/>
<enumerator name='ZFS_IOC_POOL_GET_HISTORY' value='23050'/>
<enumerator name='ZFS_IOC_VDEV_ADD' value='23051'/>
<enumerator name='ZFS_IOC_VDEV_REMOVE' value='23052'/>
<enumerator name='ZFS_IOC_VDEV_SET_STATE' value='23053'/>
<enumerator name='ZFS_IOC_VDEV_ATTACH' value='23054'/>
<enumerator name='ZFS_IOC_VDEV_DETACH' value='23055'/>
<enumerator name='ZFS_IOC_VDEV_SETPATH' value='23056'/>
<enumerator name='ZFS_IOC_VDEV_SETFRU' value='23057'/>
<enumerator name='ZFS_IOC_OBJSET_STATS' value='23058'/>
<enumerator name='ZFS_IOC_OBJSET_ZPLPROPS' value='23059'/>
<enumerator name='ZFS_IOC_DATASET_LIST_NEXT' value='23060'/>
<enumerator name='ZFS_IOC_SNAPSHOT_LIST_NEXT' value='23061'/>
<enumerator name='ZFS_IOC_SET_PROP' value='23062'/>
<enumerator name='ZFS_IOC_CREATE' value='23063'/>
<enumerator name='ZFS_IOC_DESTROY' value='23064'/>
<enumerator name='ZFS_IOC_ROLLBACK' value='23065'/>
<enumerator name='ZFS_IOC_RENAME' value='23066'/>
<enumerator name='ZFS_IOC_RECV' value='23067'/>
<enumerator name='ZFS_IOC_SEND' value='23068'/>
<enumerator name='ZFS_IOC_INJECT_FAULT' value='23069'/>
<enumerator name='ZFS_IOC_CLEAR_FAULT' value='23070'/>
<enumerator name='ZFS_IOC_INJECT_LIST_NEXT' value='23071'/>
<enumerator name='ZFS_IOC_ERROR_LOG' value='23072'/>
<enumerator name='ZFS_IOC_CLEAR' value='23073'/>
<enumerator name='ZFS_IOC_PROMOTE' value='23074'/>
<enumerator name='ZFS_IOC_SNAPSHOT' value='23075'/>
<enumerator name='ZFS_IOC_DSOBJ_TO_DSNAME' value='23076'/>
<enumerator name='ZFS_IOC_OBJ_TO_PATH' value='23077'/>
<enumerator name='ZFS_IOC_POOL_SET_PROPS' value='23078'/>
<enumerator name='ZFS_IOC_POOL_GET_PROPS' value='23079'/>
<enumerator name='ZFS_IOC_SET_FSACL' value='23080'/>
<enumerator name='ZFS_IOC_GET_FSACL' value='23081'/>
<enumerator name='ZFS_IOC_SHARE' value='23082'/>
<enumerator name='ZFS_IOC_INHERIT_PROP' value='23083'/>
<enumerator name='ZFS_IOC_SMB_ACL' value='23084'/>
<enumerator name='ZFS_IOC_USERSPACE_ONE' value='23085'/>
<enumerator name='ZFS_IOC_USERSPACE_MANY' value='23086'/>
<enumerator name='ZFS_IOC_USERSPACE_UPGRADE' value='23087'/>
<enumerator name='ZFS_IOC_HOLD' value='23088'/>
<enumerator name='ZFS_IOC_RELEASE' value='23089'/>
<enumerator name='ZFS_IOC_GET_HOLDS' value='23090'/>
<enumerator name='ZFS_IOC_OBJSET_RECVD_PROPS' value='23091'/>
<enumerator name='ZFS_IOC_VDEV_SPLIT' value='23092'/>
<enumerator name='ZFS_IOC_NEXT_OBJ' value='23093'/>
<enumerator name='ZFS_IOC_DIFF' value='23094'/>
<enumerator name='ZFS_IOC_TMP_SNAPSHOT' value='23095'/>
<enumerator name='ZFS_IOC_OBJ_TO_STATS' value='23096'/>
<enumerator name='ZFS_IOC_SPACE_WRITTEN' value='23097'/>
<enumerator name='ZFS_IOC_SPACE_SNAPS' value='23098'/>
<enumerator name='ZFS_IOC_DESTROY_SNAPS' value='23099'/>
<enumerator name='ZFS_IOC_POOL_REGUID' value='23100'/>
<enumerator name='ZFS_IOC_POOL_REOPEN' value='23101'/>
<enumerator name='ZFS_IOC_SEND_PROGRESS' value='23102'/>
<enumerator name='ZFS_IOC_LOG_HISTORY' value='23103'/>
<enumerator name='ZFS_IOC_SEND_NEW' value='23104'/>
<enumerator name='ZFS_IOC_SEND_SPACE' value='23105'/>
<enumerator name='ZFS_IOC_CLONE' value='23106'/>
<enumerator name='ZFS_IOC_BOOKMARK' value='23107'/>
<enumerator name='ZFS_IOC_GET_BOOKMARKS' value='23108'/>
<enumerator name='ZFS_IOC_DESTROY_BOOKMARKS' value='23109'/>
<enumerator name='ZFS_IOC_RECV_NEW' value='23110'/>
<enumerator name='ZFS_IOC_POOL_SYNC' value='23111'/>
<enumerator name='ZFS_IOC_CHANNEL_PROGRAM' value='23112'/>
<enumerator name='ZFS_IOC_LOAD_KEY' value='23113'/>
<enumerator name='ZFS_IOC_UNLOAD_KEY' value='23114'/>
<enumerator name='ZFS_IOC_CHANGE_KEY' value='23115'/>
<enumerator name='ZFS_IOC_REMAP' value='23116'/>
<enumerator name='ZFS_IOC_POOL_CHECKPOINT' value='23117'/>
<enumerator name='ZFS_IOC_POOL_DISCARD_CHECKPOINT' value='23118'/>
<enumerator name='ZFS_IOC_POOL_INITIALIZE' value='23119'/>
<enumerator name='ZFS_IOC_POOL_TRIM' value='23120'/>
<enumerator name='ZFS_IOC_REDACT' value='23121'/>
<enumerator name='ZFS_IOC_GET_BOOKMARK_PROPS' value='23122'/>
<enumerator name='ZFS_IOC_WAIT' value='23123'/>
<enumerator name='ZFS_IOC_WAIT_FS' value='23124'/>
<enumerator name='ZFS_IOC_VDEV_GET_PROPS' value='23125'/>
<enumerator name='ZFS_IOC_VDEV_SET_PROPS' value='23126'/>
<enumerator name='ZFS_IOC_POOL_SCRUB' value='23127'/>
<enumerator name='ZFS_IOC_PLATFORM' value='23168'/>
<enumerator name='ZFS_IOC_EVENTS_NEXT' value='23169'/>
<enumerator name='ZFS_IOC_EVENTS_CLEAR' value='23170'/>
<enumerator name='ZFS_IOC_EVENTS_SEEK' value='23171'/>
<enumerator name='ZFS_IOC_NEXTBOOT' value='23172'/>
<enumerator name='ZFS_IOC_JAIL' value='23173'/>
<enumerator name='ZFS_IOC_UNJAIL' value='23174'/>
<enumerator name='ZFS_IOC_SET_BOOTENV' value='23175'/>
<enumerator name='ZFS_IOC_GET_BOOTENV' value='23176'/>
<enumerator name='ZFS_IOC_LAST' value='23177'/>
</enum-decl>
<typedef-decl name='zfs_ioc_t' type-id='12033f13' id='5b35941c'/>
<enum-decl name='zpool_wait_activity_t' naming-typedef-id='73446457' id='849338e3'> <enum-decl name='zpool_wait_activity_t' naming-typedef-id='73446457' id='849338e3'>
<underlying-type type-id='9cac1fee'/> <underlying-type type-id='9cac1fee'/>
<enumerator name='ZPOOL_WAIT_CKPT_DISCARD' value='0'/> <enumerator name='ZPOOL_WAIT_CKPT_DISCARD' value='0'/>

7
lib/libzfs_core/libzfs_core.c
View File

@ -247,6 +247,13 @@ out:
return (error); return (error);
} }
int
lzc_scrub(zfs_ioc_t ioc, const char *name,
nvlist_t *source, nvlist_t **resultp)
{
return (lzc_ioctl(ioc, name, source, resultp));
}
int int
lzc_create(const char *fsname, enum lzc_dataset_type type, nvlist_t *props, lzc_create(const char *fsname, enum lzc_dataset_type type, nvlist_t *props,
uint8_t *wkeydata, uint_t wkeylen) uint8_t *wkeydata, uint_t wkeylen)

3
man/man4/zfs.4
View File

@ -1764,6 +1764,9 @@ Scrubs are processed by the sync thread.
While scrubbing, it will spend at least this much time While scrubbing, it will spend at least this much time
working on a scrub between TXG flushes. working on a scrub between TXG flushes.
. .
.It Sy zfs_scrub_error_blocks_per_txg Ns = Ns Sy 4096 Pq uint
Error blocks to be scrubbed in one txg.
.
.It Sy zfs_scan_checkpoint_intval Ns = Ns Sy 7200 Ns s Po 2 hour Pc Pq uint .It Sy zfs_scan_checkpoint_intval Ns = Ns Sy 7200 Ns s Po 2 hour Pc Pq uint
To preserve progress across reboots, the sequential scan algorithm periodically To preserve progress across reboots, the sequential scan algorithm periodically
needs to stop metadata scanning and issue all the verification I/O to disk. needs to stop metadata scanning and issue all the verification I/O to disk.

19
man/man8/zpool-scrub.8
View File

@ -38,6 +38,7 @@
.Cm scrub .Cm scrub
.Op Fl s Ns | Ns Fl p .Op Fl s Ns | Ns Fl p
.Op Fl w .Op Fl w
.Op Fl e
.Ar pool Ns … .Ar pool Ns …
. .
.Sh DESCRIPTION .Sh DESCRIPTION
@ -62,6 +63,13 @@ device
whereas scrubbing examines all data to discover silent errors due to hardware whereas scrubbing examines all data to discover silent errors due to hardware
faults or disk failure. faults or disk failure.
.Pp .Pp
When scrubbing a pool with encrypted filesystems the keys do not need to be
loaded.
However, if the keys are not loaded and an unrepairable checksum error is
detected the file name cannot be included in the
.Nm zpool Cm status Fl v
verbose error report.
.Pp
Because scrubbing and resilvering are I/O-intensive operations, ZFS only allows Because scrubbing and resilvering are I/O-intensive operations, ZFS only allows
one at a time. one at a time.
.Pp .Pp
@ -92,9 +100,20 @@ Once resumed the scrub will pick up from the place where it was last
checkpointed to disk. checkpointed to disk.
To resume a paused scrub issue To resume a paused scrub issue
.Nm zpool Cm scrub .Nm zpool Cm scrub
or
.Nm zpool Cm scrub
.Fl e
again. again.
.It Fl w .It Fl w
Wait until scrub has completed before returning. Wait until scrub has completed before returning.
.It Fl e
Only scrub files with known data errors as reported by
.Nm zpool Cm status Fl v .
The pool must have been scrubbed at least once with the
.Sy head_errlog
feature enabled to use this option.
Error scrubbing cannot be run simultaneously with regular scrubbing or
resilvering, nor can it be run when a regular scrub is paused.
.El .El
.Sh EXAMPLES .Sh EXAMPLES
.Ss Example 1 .Ss Example 1

696
module/zfs/dsl_scan.c
View File

@ -54,6 +54,7 @@
#include <sys/zfeature.h> #include <sys/zfeature.h>
#include <sys/abd.h> #include <sys/abd.h>
#include <sys/range_tree.h> #include <sys/range_tree.h>
#include <sys/dbuf.h>
#ifdef _KERNEL #ifdef _KERNEL
#include <sys/zfs_vfsops.h> #include <sys/zfs_vfsops.h>
#endif #endif
@ -129,6 +130,7 @@ static void scan_ds_queue_insert(dsl_scan_t *scn, uint64_t dsobj, uint64_t txg);
static void scan_ds_queue_remove(dsl_scan_t *scn, uint64_t dsobj); static void scan_ds_queue_remove(dsl_scan_t *scn, uint64_t dsobj);
static void scan_ds_queue_sync(dsl_scan_t *scn, dmu_tx_t *tx); static void scan_ds_queue_sync(dsl_scan_t *scn, dmu_tx_t *tx);
static uint64_t dsl_scan_count_data_disks(spa_t *spa); static uint64_t dsl_scan_count_data_disks(spa_t *spa);
static void read_by_block_level(dsl_scan_t *scn, zbookmark_phys_t zb);
extern uint_t zfs_vdev_async_write_active_min_dirty_percent; extern uint_t zfs_vdev_async_write_active_min_dirty_percent;
static int zfs_scan_blkstats = 0; static int zfs_scan_blkstats = 0;
@ -231,6 +233,9 @@ static int zfs_resilver_disable_defer = B_FALSE;
*/ */
static int zfs_free_bpobj_enabled = 1; static int zfs_free_bpobj_enabled = 1;
/* Error blocks to be scrubbed in one txg. */
unsigned long zfs_scrub_error_blocks_per_txg = 1 << 12;
/* the order has to match pool_scan_type */ /* the order has to match pool_scan_type */
static scan_cb_t *scan_funcs[POOL_SCAN_FUNCS] = { static scan_cb_t *scan_funcs[POOL_SCAN_FUNCS] = {
NULL, NULL,
@ -511,9 +516,17 @@ dsl_scan_init(dsl_pool_t *dp, uint64_t txg)
"scrub_queue", sizeof (uint64_t), 1, "scrub_queue", sizeof (uint64_t), 1,
&scn->scn_phys.scn_queue_obj); &scn->scn_phys.scn_queue_obj);
} else { } else {
err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
DMU_POOL_ERRORSCRUB, sizeof (uint64_t),
ERRORSCRUB_PHYS_NUMINTS, &scn->errorscrub_phys);
if (err != 0 && err != ENOENT)
return (err);
err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT, err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
DMU_POOL_SCAN, sizeof (uint64_t), SCAN_PHYS_NUMINTS, DMU_POOL_SCAN, sizeof (uint64_t), SCAN_PHYS_NUMINTS,
&scn->scn_phys); &scn->scn_phys);
/* /*
* Detect if the pool contains the signature of #2094. If it * Detect if the pool contains the signature of #2094. If it
* does properly update the scn->scn_phys structure and notify * does properly update the scn->scn_phys structure and notify
@ -663,6 +676,22 @@ dsl_scan_scrubbing(const dsl_pool_t *dp)
scn_phys->scn_func == POOL_SCAN_SCRUB); scn_phys->scn_func == POOL_SCAN_SCRUB);
} }
boolean_t
dsl_errorscrubbing(const dsl_pool_t *dp)
{
dsl_errorscrub_phys_t *errorscrub_phys = &dp->dp_scan->errorscrub_phys;
return (errorscrub_phys->dep_state == DSS_ERRORSCRUBBING &&
errorscrub_phys->dep_func == POOL_SCAN_ERRORSCRUB);
}
boolean_t
dsl_errorscrub_is_paused(const dsl_scan_t *scn)
{
return (dsl_errorscrubbing(scn->scn_dp) &&
scn->errorscrub_phys.dep_paused_flags);
}
boolean_t boolean_t
dsl_scan_is_paused_scrub(const dsl_scan_t *scn) dsl_scan_is_paused_scrub(const dsl_scan_t *scn)
{ {
@ -670,6 +699,68 @@ dsl_scan_is_paused_scrub(const dsl_scan_t *scn)
scn->scn_phys.scn_flags & DSF_SCRUB_PAUSED); scn->scn_phys.scn_flags & DSF_SCRUB_PAUSED);
} }
static void
dsl_errorscrub_sync_state(dsl_scan_t *scn, dmu_tx_t *tx)
{
scn->errorscrub_phys.dep_cursor =
zap_cursor_serialize(&scn->errorscrub_cursor);
VERIFY0(zap_update(scn->scn_dp->dp_meta_objset,
DMU_POOL_DIRECTORY_OBJECT,
DMU_POOL_ERRORSCRUB, sizeof (uint64_t), ERRORSCRUB_PHYS_NUMINTS,
&scn->errorscrub_phys, tx));
}
static void
dsl_errorscrub_setup_sync(void *arg, dmu_tx_t *tx)
{
dsl_scan_t *scn = dmu_tx_pool(tx)->dp_scan;
pool_scan_func_t *funcp = arg;
dsl_pool_t *dp = scn->scn_dp;
spa_t *spa = dp->dp_spa;
ASSERT(!dsl_scan_is_running(scn));
ASSERT(!dsl_errorscrubbing(scn->scn_dp));
ASSERT(*funcp > POOL_SCAN_NONE && *funcp < POOL_SCAN_FUNCS);
memset(&scn->errorscrub_phys, 0, sizeof (scn->errorscrub_phys));
scn->errorscrub_phys.dep_func = *funcp;
scn->errorscrub_phys.dep_state = DSS_ERRORSCRUBBING;
scn->errorscrub_phys.dep_start_time = gethrestime_sec();
scn->errorscrub_phys.dep_to_examine = spa_get_last_errlog_size(spa);
scn->errorscrub_phys.dep_examined = 0;
scn->errorscrub_phys.dep_errors = 0;
scn->errorscrub_phys.dep_cursor = 0;
zap_cursor_init_serialized(&scn->errorscrub_cursor,
spa->spa_meta_objset, spa->spa_errlog_last,
scn->errorscrub_phys.dep_cursor);
vdev_config_dirty(spa->spa_root_vdev);
spa_event_notify(spa, NULL, NULL, ESC_ZFS_ERRORSCRUB_START);
dsl_errorscrub_sync_state(scn, tx);
spa_history_log_internal(spa, "error scrub setup", tx,
"func=%u mintxg=%u maxtxg=%llu",
*funcp, 0, (u_longlong_t)tx->tx_txg);
}
static int
dsl_errorscrub_setup_check(void *arg, dmu_tx_t *tx)
{
(void) arg;
dsl_scan_t *scn = dmu_tx_pool(tx)->dp_scan;
if (dsl_scan_is_running(scn) || (dsl_errorscrubbing(scn->scn_dp))) {
return (SET_ERROR(EBUSY));
}
if (spa_get_last_errlog_size(scn->scn_dp->dp_spa) == 0) {
return (ECANCELED);
}
return (0);
}
/* /*
* Writes out a persistent dsl_scan_phys_t record to the pool directory. * Writes out a persistent dsl_scan_phys_t record to the pool directory.
* Because we can be running in the block sorting algorithm, we do not always * Because we can be running in the block sorting algorithm, we do not always
@ -745,7 +836,8 @@ dsl_scan_setup_check(void *arg, dmu_tx_t *tx)
dsl_scan_t *scn = dmu_tx_pool(tx)->dp_scan; dsl_scan_t *scn = dmu_tx_pool(tx)->dp_scan;
vdev_t *rvd = scn->scn_dp->dp_spa->spa_root_vdev; vdev_t *rvd = scn->scn_dp->dp_spa->spa_root_vdev;
if (dsl_scan_is_running(scn) || vdev_rebuild_active(rvd)) if (dsl_scan_is_running(scn) || vdev_rebuild_active(rvd) ||
dsl_errorscrubbing(scn->scn_dp))
return (SET_ERROR(EBUSY)); return (SET_ERROR(EBUSY));
return (0); return (0);
@ -754,6 +846,7 @@ dsl_scan_setup_check(void *arg, dmu_tx_t *tx)
void void
dsl_scan_setup_sync(void *arg, dmu_tx_t *tx) dsl_scan_setup_sync(void *arg, dmu_tx_t *tx)
{ {
(void) arg;
dsl_scan_t *scn = dmu_tx_pool(tx)->dp_scan; dsl_scan_t *scn = dmu_tx_pool(tx)->dp_scan;
pool_scan_func_t *funcp = arg; pool_scan_func_t *funcp = arg;
dmu_object_type_t ot = 0; dmu_object_type_t ot = 0;
@ -763,6 +856,14 @@ dsl_scan_setup_sync(void *arg, dmu_tx_t *tx)
ASSERT(!dsl_scan_is_running(scn)); ASSERT(!dsl_scan_is_running(scn));
ASSERT(*funcp > POOL_SCAN_NONE && *funcp < POOL_SCAN_FUNCS); ASSERT(*funcp > POOL_SCAN_NONE && *funcp < POOL_SCAN_FUNCS);
memset(&scn->scn_phys, 0, sizeof (scn->scn_phys)); memset(&scn->scn_phys, 0, sizeof (scn->scn_phys));
/*
* If we are starting a fresh scrub, we erase the error scrub
* information from disk.
*/
memset(&scn->errorscrub_phys, 0, sizeof (scn->errorscrub_phys));
dsl_errorscrub_sync_state(scn, tx);
scn->scn_phys.scn_func = *funcp; scn->scn_phys.scn_func = *funcp;
scn->scn_phys.scn_state = DSS_SCANNING; scn->scn_phys.scn_state = DSS_SCANNING;
scn->scn_phys.scn_min_txg = 0; scn->scn_phys.scn_min_txg = 0;
@ -856,8 +957,9 @@ dsl_scan_setup_sync(void *arg, dmu_tx_t *tx)
} }
/* /*
* Called by the ZFS_IOC_POOL_SCAN ioctl to start a scrub or resilver. * Called by ZFS_IOC_POOL_SCRUB and ZFS_IOC_POOL_SCAN ioctl to start a scrub,
* Can also be called to resume a paused scrub. * error scrub or resilver. Can also be called to resume a paused scrub or
* error scrub.
*/ */
int int
dsl_scan(dsl_pool_t *dp, pool_scan_func_t func) dsl_scan(dsl_pool_t *dp, pool_scan_func_t func)
@ -883,6 +985,26 @@ dsl_scan(dsl_pool_t *dp, pool_scan_func_t func)
return (0); return (0);
} }
if (func == POOL_SCAN_ERRORSCRUB) {
if (dsl_errorscrub_is_paused(dp->dp_scan)) {
/*
* got error scrub start cmd, resume paused error scrub.
*/
int err = dsl_scrub_set_pause_resume(scn->scn_dp,
POOL_SCRUB_NORMAL);
if (err == 0) {
spa_event_notify(spa, NULL, NULL,
ESC_ZFS_ERRORSCRUB_RESUME);
return (ECANCELED);
}
return (SET_ERROR(err));
}
return (dsl_sync_task(spa_name(dp->dp_spa),
dsl_errorscrub_setup_check, dsl_errorscrub_setup_sync,
&func, 0, ZFS_SPACE_CHECK_RESERVED));
}
if (func == POOL_SCAN_SCRUB && dsl_scan_is_paused_scrub(scn)) { if (func == POOL_SCAN_SCRUB && dsl_scan_is_paused_scrub(scn)) {
/* got scrub start cmd, resume paused scrub */ /* got scrub start cmd, resume paused scrub */
int err = dsl_scrub_set_pause_resume(scn->scn_dp, int err = dsl_scrub_set_pause_resume(scn->scn_dp,
@ -891,7 +1013,6 @@ dsl_scan(dsl_pool_t *dp, pool_scan_func_t func)
spa_event_notify(spa, NULL, NULL, ESC_ZFS_SCRUB_RESUME); spa_event_notify(spa, NULL, NULL, ESC_ZFS_SCRUB_RESUME);
return (SET_ERROR(ECANCELED)); return (SET_ERROR(ECANCELED));
} }
return (SET_ERROR(err)); return (SET_ERROR(err));
} }
@ -899,6 +1020,33 @@ dsl_scan(dsl_pool_t *dp, pool_scan_func_t func)
dsl_scan_setup_sync, &func, 0, ZFS_SPACE_CHECK_EXTRA_RESERVED)); dsl_scan_setup_sync, &func, 0, ZFS_SPACE_CHECK_EXTRA_RESERVED));
} }
static void
dsl_errorscrub_done(dsl_scan_t *scn, boolean_t complete, dmu_tx_t *tx)
{
dsl_pool_t *dp = scn->scn_dp;
spa_t *spa = dp->dp_spa;
if (complete) {
spa_event_notify(spa, NULL, NULL, ESC_ZFS_ERRORSCRUB_FINISH);
spa_history_log_internal(spa, "error scrub done", tx,
"errors=%llu", (u_longlong_t)spa_approx_errlog_size(spa));
} else {
spa_history_log_internal(spa, "error scrub canceled", tx,
"errors=%llu", (u_longlong_t)spa_approx_errlog_size(spa));
}
scn->errorscrub_phys.dep_state = complete ? DSS_FINISHED : DSS_CANCELED;
spa->spa_scrub_active = B_FALSE;
spa_errlog_rotate(spa);
scn->errorscrub_phys.dep_end_time = gethrestime_sec();
zap_cursor_fini(&scn->errorscrub_cursor);
if (spa->spa_errata == ZPOOL_ERRATA_ZOL_2094_SCRUB)
spa->spa_errata = 0;
ASSERT(!dsl_errorscrubbing(scn->scn_dp));
}
static void static void
dsl_scan_done(dsl_scan_t *scn, boolean_t complete, dmu_tx_t *tx) dsl_scan_done(dsl_scan_t *scn, boolean_t complete, dmu_tx_t *tx)
{ {
@ -1045,6 +1193,92 @@ dsl_scan_done(dsl_scan_t *scn, boolean_t complete, dmu_tx_t *tx)
ASSERT(!dsl_scan_is_running(scn)); ASSERT(!dsl_scan_is_running(scn));
} }
static int
dsl_errorscrub_pause_resume_check(void *arg, dmu_tx_t *tx)
{
pool_scrub_cmd_t *cmd = arg;
dsl_pool_t *dp = dmu_tx_pool(tx);
dsl_scan_t *scn = dp->dp_scan;
if (*cmd == POOL_SCRUB_PAUSE) {
/*
* can't pause a error scrub when there is no in-progress
* error scrub.
*/
if (!dsl_errorscrubbing(dp))
return (SET_ERROR(ENOENT));
/* can't pause a paused error scrub */
if (dsl_errorscrub_is_paused(scn))
return (SET_ERROR(EBUSY));
} else if (*cmd != POOL_SCRUB_NORMAL) {
return (SET_ERROR(ENOTSUP));
}
return (0);
}
static void
dsl_errorscrub_pause_resume_sync(void *arg, dmu_tx_t *tx)
{
pool_scrub_cmd_t *cmd = arg;
dsl_pool_t *dp = dmu_tx_pool(tx);
spa_t *spa = dp->dp_spa;
dsl_scan_t *scn = dp->dp_scan;
if (*cmd == POOL_SCRUB_PAUSE) {
spa->spa_scan_pass_errorscrub_pause = gethrestime_sec();
scn->errorscrub_phys.dep_paused_flags = B_TRUE;
dsl_errorscrub_sync_state(scn, tx);
spa_event_notify(spa, NULL, NULL, ESC_ZFS_ERRORSCRUB_PAUSED);
} else {
ASSERT3U(*cmd, ==, POOL_SCRUB_NORMAL);
if (dsl_errorscrub_is_paused(scn)) {
/*
* We need to keep track of how much time we spend
* paused per pass so that we can adjust the error scrub
* rate shown in the output of 'zpool status'.
*/
spa->spa_scan_pass_errorscrub_spent_paused +=
gethrestime_sec() -
spa->spa_scan_pass_errorscrub_pause;
spa->spa_scan_pass_errorscrub_pause = 0;
scn->errorscrub_phys.dep_paused_flags = B_FALSE;
zap_cursor_init_serialized(
&scn->errorscrub_cursor,
spa->spa_meta_objset, spa->spa_errlog_last,
scn->errorscrub_phys.dep_cursor);
dsl_errorscrub_sync_state(scn, tx);
}
}
}
static int
dsl_errorscrub_cancel_check(void *arg, dmu_tx_t *tx)
{
(void) arg;
dsl_scan_t *scn = dmu_tx_pool(tx)->dp_scan;
/* can't cancel a error scrub when there is no one in-progress */
if (!dsl_errorscrubbing(scn->scn_dp))
return (SET_ERROR(ENOENT));
return (0);
}
static void
dsl_errorscrub_cancel_sync(void *arg, dmu_tx_t *tx)
{
(void) arg;
dsl_scan_t *scn = dmu_tx_pool(tx)->dp_scan;
dsl_errorscrub_done(scn, B_FALSE, tx);
dsl_errorscrub_sync_state(scn, tx);
spa_event_notify(scn->scn_dp->dp_spa, NULL, NULL,
ESC_ZFS_ERRORSCRUB_ABORT);
}
static int static int
dsl_scan_cancel_check(void *arg, dmu_tx_t *tx) dsl_scan_cancel_check(void *arg, dmu_tx_t *tx)
{ {
@ -1070,6 +1304,11 @@ dsl_scan_cancel_sync(void *arg, dmu_tx_t *tx)
int int
dsl_scan_cancel(dsl_pool_t *dp) dsl_scan_cancel(dsl_pool_t *dp)
{ {
if (dsl_errorscrubbing(dp)) {
return (dsl_sync_task(spa_name(dp->dp_spa),
dsl_errorscrub_cancel_check, dsl_errorscrub_cancel_sync,
NULL, 3, ZFS_SPACE_CHECK_RESERVED));
}
return (dsl_sync_task(spa_name(dp->dp_spa), dsl_scan_cancel_check, return (dsl_sync_task(spa_name(dp->dp_spa), dsl_scan_cancel_check,
dsl_scan_cancel_sync, NULL, 3, ZFS_SPACE_CHECK_RESERVED)); dsl_scan_cancel_sync, NULL, 3, ZFS_SPACE_CHECK_RESERVED));
} }
@ -1136,6 +1375,12 @@ dsl_scrub_pause_resume_sync(void *arg, dmu_tx_t *tx)
int int
dsl_scrub_set_pause_resume(const dsl_pool_t *dp, pool_scrub_cmd_t cmd) dsl_scrub_set_pause_resume(const dsl_pool_t *dp, pool_scrub_cmd_t cmd)
{ {
if (dsl_errorscrubbing(dp)) {
return (dsl_sync_task(spa_name(dp->dp_spa),
dsl_errorscrub_pause_resume_check,
dsl_errorscrub_pause_resume_sync, &cmd, 3,
ZFS_SPACE_CHECK_RESERVED));
}
return (dsl_sync_task(spa_name(dp->dp_spa), return (dsl_sync_task(spa_name(dp->dp_spa),
dsl_scrub_pause_resume_check, dsl_scrub_pause_resume_sync, &cmd, 3, dsl_scrub_pause_resume_check, dsl_scrub_pause_resume_sync, &cmd, 3,
ZFS_SPACE_CHECK_RESERVED)); ZFS_SPACE_CHECK_RESERVED));
@ -1422,6 +1667,42 @@ dsl_scan_check_suspend(dsl_scan_t *scn, const zbookmark_phys_t *zb)
return (B_FALSE); return (B_FALSE);
} }
static boolean_t
dsl_error_scrub_check_suspend(dsl_scan_t *scn, const zbookmark_phys_t *zb)
{
/*
* We suspend if:
* - we have scrubbed for at least the minimum time (default 1 sec
* for error scrub), someone is explicitly waiting for this txg
* to complete, or we have used up all of the time in the txg
* timeout (default 5 sec).
* or
* - the spa is shutting down because this pool is being exported
* or the machine is rebooting.
*/
uint64_t curr_time_ns = gethrtime();
uint64_t error_scrub_time_ns = curr_time_ns - scn->scn_sync_start_time;
uint64_t sync_time_ns = curr_time_ns -
scn->scn_dp->dp_spa->spa_sync_starttime;
int mintime = zfs_scrub_min_time_ms;
if ((NSEC2MSEC(error_scrub_time_ns) > mintime &&
(txg_sync_waiting(scn->scn_dp) ||
NSEC2SEC(sync_time_ns) >= zfs_txg_timeout)) ||
spa_shutting_down(scn->scn_dp->dp_spa)) {
if (zb) {
dprintf("error scrub suspending at bookmark "
"%llx/%llx/%llx/%llx\n",
(longlong_t)zb->zb_objset,
(longlong_t)zb->zb_object,
(longlong_t)zb->zb_level,
(longlong_t)zb->zb_blkid);
}
return (B_TRUE);
}
return (B_FALSE);
}
typedef struct zil_scan_arg { typedef struct zil_scan_arg {
dsl_pool_t *zsa_dp; dsl_pool_t *zsa_dp;
zil_header_t *zsa_zh; zil_header_t *zsa_zh;
@ -3352,6 +3633,19 @@ dsl_scan_active(dsl_scan_t *scn)
return ((used != 0) || (clones_left)); return ((used != 0) || (clones_left));
} }
boolean_t
dsl_errorscrub_active(dsl_scan_t *scn)
{
spa_t *spa = scn->scn_dp->dp_spa;
if (spa->spa_load_state != SPA_LOAD_NONE)
return (B_FALSE);
if (spa_shutting_down(spa))
return (B_FALSE);
if (dsl_errorscrubbing(scn->scn_dp))
return (B_TRUE);
return (B_FALSE);
}
static boolean_t static boolean_t
dsl_scan_check_deferred(vdev_t *vd) dsl_scan_check_deferred(vdev_t *vd)
{ {
@ -3568,6 +3862,387 @@ dsl_process_async_destroys(dsl_pool_t *dp, dmu_tx_t *tx)
return (0); return (0);
} }
static void
name_to_bookmark(char *buf, zbookmark_phys_t *zb)
{
zb->zb_objset = zfs_strtonum(buf, &buf);
ASSERT(*buf == ':');
zb->zb_object = zfs_strtonum(buf + 1, &buf);
ASSERT(*buf == ':');
zb->zb_level = (int)zfs_strtonum(buf + 1, &buf);
ASSERT(*buf == ':');
zb->zb_blkid = zfs_strtonum(buf + 1, &buf);
ASSERT(*buf == '\0');
}
static void
name_to_object(char *buf, uint64_t *obj)
{
*obj = zfs_strtonum(buf, &buf);
ASSERT(*buf == '\0');
}
static void
read_by_block_level(dsl_scan_t *scn, zbookmark_phys_t zb)
{
dsl_pool_t *dp = scn->scn_dp;
dsl_dataset_t *ds;
objset_t *os;
if (dsl_dataset_hold_obj(dp, zb.zb_objset, FTAG, &ds) != 0)
return;
if (dmu_objset_from_ds(ds, &os) != 0) {
dsl_dataset_rele(ds, FTAG);
return;
}
/*
* If the key is not loaded dbuf_dnode_findbp() will error out with
* EACCES. However in that case dnode_hold() will eventually call
* dbuf_read()->zio_wait() which may call spa_log_error(). This will
* lead to a deadlock due to us holding the mutex spa_errlist_lock.
* Avoid this by checking here if the keys are loaded, if not return.
* If the keys are not loaded the head_errlog feature is meaningless
* as we cannot figure out the birth txg of the block pointer.
*/
if (dsl_dataset_get_keystatus(ds->ds_dir) ==
ZFS_KEYSTATUS_UNAVAILABLE) {
dsl_dataset_rele(ds, FTAG);
return;
}
dnode_t *dn;
blkptr_t bp;
if (dnode_hold(os, zb.zb_object, FTAG, &dn) != 0) {
dsl_dataset_rele(ds, FTAG);
return;
}
rw_enter(&dn->dn_struct_rwlock, RW_READER);
int error = dbuf_dnode_findbp(dn, zb.zb_level, zb.zb_blkid, &bp, NULL,
NULL);
if (error) {
rw_exit(&dn->dn_struct_rwlock);
dnode_rele(dn, FTAG);
dsl_dataset_rele(ds, FTAG);
return;
}
if (!error && BP_IS_HOLE(&bp)) {
rw_exit(&dn->dn_struct_rwlock);
dnode_rele(dn, FTAG);
dsl_dataset_rele(ds, FTAG);
return;
}
int zio_flags = ZIO_FLAG_SCAN_THREAD | ZIO_FLAG_RAW |
ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB;
/* If it's an intent log block, failure is expected. */
if (zb.zb_level == ZB_ZIL_LEVEL)
zio_flags |= ZIO_FLAG_SPECULATIVE;
ASSERT(!BP_IS_EMBEDDED(&bp));
scan_exec_io(dp, &bp, zio_flags, &zb, NULL);
rw_exit(&dn->dn_struct_rwlock);
dnode_rele(dn, FTAG);
dsl_dataset_rele(ds, FTAG);
}
/*
* We keep track of the scrubbed error blocks in "count". This will be used
* when deciding whether we exceeded zfs_scrub_error_blocks_per_txg. This
* function is modelled after check_filesystem().
*/
static int
scrub_filesystem(spa_t *spa, uint64_t fs, zbookmark_err_phys_t *zep,
int *count)
{
dsl_dataset_t *ds;
dsl_pool_t *dp = spa->spa_dsl_pool;
dsl_scan_t *scn = dp->dp_scan;
int error = dsl_dataset_hold_obj(dp, fs, FTAG, &ds);
if (error != 0)
return (error);
uint64_t latest_txg;
uint64_t txg_to_consider = spa->spa_syncing_txg;
boolean_t check_snapshot = B_TRUE;
error = find_birth_txg(ds, zep, &latest_txg);
/*
* If find_birth_txg() errors out, then err on the side of caution and
* proceed. In worst case scenario scrub all objects. If zep->zb_birth
* is 0 (e.g. in case of encryption with unloaded keys) also proceed to
* scrub all objects.
*/
if (error == 0 && zep->zb_birth == latest_txg) {
/* Block neither free nor re written. */
zbookmark_phys_t zb;
zep_to_zb(fs, zep, &zb);
scn->scn_zio_root = zio_root(spa, NULL, NULL,
ZIO_FLAG_CANFAIL);
/* We have already acquired the config lock for spa */
read_by_block_level(scn, zb);
(void) zio_wait(scn->scn_zio_root);
scn->scn_zio_root = NULL;
scn->errorscrub_phys.dep_examined++;
scn->errorscrub_phys.dep_to_examine--;
(*count)++;
if ((*count) == zfs_scrub_error_blocks_per_txg ||
dsl_error_scrub_check_suspend(scn, &zb)) {
dsl_dataset_rele(ds, FTAG);
return (SET_ERROR(EFAULT));
}
check_snapshot = B_FALSE;
} else if (error == 0) {
txg_to_consider = latest_txg;
}
/*
* Retrieve the number of snapshots if the dataset is not a snapshot.
*/
uint64_t snap_count = 0;
if (dsl_dataset_phys(ds)->ds_snapnames_zapobj != 0) {
error = zap_count(spa->spa_meta_objset,
dsl_dataset_phys(ds)->ds_snapnames_zapobj, &snap_count);
if (error != 0) {
dsl_dataset_rele(ds, FTAG);
return (error);
}
}
if (snap_count == 0) {
/* Filesystem without snapshots. */
dsl_dataset_rele(ds, FTAG);
return (0);
}
uint64_t snap_obj = dsl_dataset_phys(ds)->ds_prev_snap_obj;
uint64_t snap_obj_txg = dsl_dataset_phys(ds)->ds_prev_snap_txg;
dsl_dataset_rele(ds, FTAG);
/* Check only snapshots created from this file system. */
while (snap_obj != 0 && zep->zb_birth < snap_obj_txg &&
snap_obj_txg <= txg_to_consider) {
error = dsl_dataset_hold_obj(dp, snap_obj, FTAG, &ds);
if (error != 0)
return (error);
if (dsl_dir_phys(ds->ds_dir)->dd_head_dataset_obj != fs) {
snap_obj = dsl_dataset_phys(ds)->ds_prev_snap_obj;
snap_obj_txg = dsl_dataset_phys(ds)->ds_prev_snap_txg;
dsl_dataset_rele(ds, FTAG);
continue;
}
boolean_t affected = B_TRUE;
if (check_snapshot) {
uint64_t blk_txg;
error = find_birth_txg(ds, zep, &blk_txg);
/*
* Scrub the snapshot also when zb_birth == 0 or when
* find_birth_txg() returns an error.
*/
affected = (error == 0 && zep->zb_birth == blk_txg) ||
(error != 0) || (zep->zb_birth == 0);
}
/* Scrub snapshots. */
if (affected) {
zbookmark_phys_t zb;
zep_to_zb(snap_obj, zep, &zb);
scn->scn_zio_root = zio_root(spa, NULL, NULL,
ZIO_FLAG_CANFAIL);
/* We have already acquired the config lock for spa */
read_by_block_level(scn, zb);
(void) zio_wait(scn->scn_zio_root);
scn->scn_zio_root = NULL;
scn->errorscrub_phys.dep_examined++;
scn->errorscrub_phys.dep_to_examine--;
(*count)++;
if ((*count) == zfs_scrub_error_blocks_per_txg ||
dsl_error_scrub_check_suspend(scn, &zb)) {
dsl_dataset_rele(ds, FTAG);
return (EFAULT);
}
}
snap_obj_txg = dsl_dataset_phys(ds)->ds_prev_snap_txg;
snap_obj = dsl_dataset_phys(ds)->ds_prev_snap_obj;
dsl_dataset_rele(ds, FTAG);
}
return (0);
}
void
dsl_errorscrub_sync(dsl_pool_t *dp, dmu_tx_t *tx)
{
spa_t *spa = dp->dp_spa;
dsl_scan_t *scn = dp->dp_scan;
/*
* Only process scans in sync pass 1.
*/
if (spa_sync_pass(spa) > 1)
return;
/*
* If the spa is shutting down, then stop scanning. This will
* ensure that the scan does not dirty any new data during the
* shutdown phase.
*/
if (spa_shutting_down(spa))
return;
if (!dsl_errorscrub_active(scn) || dsl_errorscrub_is_paused(scn)) {
return;
}
if (dsl_scan_resilvering(scn->scn_dp)) {
/* cancel the error scrub if resilver started */
dsl_scan_cancel(scn->scn_dp);
return;
}
spa->spa_scrub_active = B_TRUE;
scn->scn_sync_start_time = gethrtime();
/*
* zfs_scan_suspend_progress can be set to disable scrub progress.
* See more detailed comment in dsl_scan_sync().
*/
if (zfs_scan_suspend_progress) {
uint64_t scan_time_ns = gethrtime() - scn->scn_sync_start_time;
int mintime = zfs_scrub_min_time_ms;
while (zfs_scan_suspend_progress &&
!txg_sync_waiting(scn->scn_dp) &&
!spa_shutting_down(scn->scn_dp->dp_spa) &&
NSEC2MSEC(scan_time_ns) < mintime) {
delay(hz);
scan_time_ns = gethrtime() - scn->scn_sync_start_time;
}
return;
}
int i = 0;
zap_attribute_t *za;
zbookmark_phys_t *zb;
boolean_t limit_exceeded = B_FALSE;
za = kmem_zalloc(sizeof (zap_attribute_t), KM_SLEEP);
zb = kmem_zalloc(sizeof (zbookmark_phys_t), KM_SLEEP);
if (!spa_feature_is_enabled(spa, SPA_FEATURE_HEAD_ERRLOG)) {
for (; zap_cursor_retrieve(&scn->errorscrub_cursor, za) == 0;
zap_cursor_advance(&scn->errorscrub_cursor)) {
name_to_bookmark(za->za_name, zb);
scn->scn_zio_root = zio_root(dp->dp_spa, NULL,
NULL, ZIO_FLAG_CANFAIL);
dsl_pool_config_enter(dp, FTAG);
read_by_block_level(scn, *zb);
dsl_pool_config_exit(dp, FTAG);
(void) zio_wait(scn->scn_zio_root);
scn->scn_zio_root = NULL;
scn->errorscrub_phys.dep_examined += 1;
scn->errorscrub_phys.dep_to_examine -= 1;
i++;
if (i == zfs_scrub_error_blocks_per_txg ||
dsl_error_scrub_check_suspend(scn, zb)) {
limit_exceeded = B_TRUE;
break;
}
}
if (!limit_exceeded)
dsl_errorscrub_done(scn, B_TRUE, tx);
dsl_errorscrub_sync_state(scn, tx);
kmem_free(za, sizeof (*za));
kmem_free(zb, sizeof (*zb));
return;
}
int error = 0;
for (; zap_cursor_retrieve(&scn->errorscrub_cursor, za) == 0;
zap_cursor_advance(&scn->errorscrub_cursor)) {
zap_cursor_t *head_ds_cursor;
zap_attribute_t *head_ds_attr;
zbookmark_err_phys_t head_ds_block;
head_ds_cursor = kmem_zalloc(sizeof (zap_cursor_t), KM_SLEEP);
head_ds_attr = kmem_zalloc(sizeof (zap_attribute_t), KM_SLEEP);
uint64_t head_ds_err_obj = za->za_first_integer;
uint64_t head_ds;
name_to_object(za->za_name, &head_ds);
boolean_t config_held = B_FALSE;
uint64_t top_affected_fs;
for (zap_cursor_init(head_ds_cursor, spa->spa_meta_objset,
head_ds_err_obj); zap_cursor_retrieve(head_ds_cursor,
head_ds_attr) == 0; zap_cursor_advance(head_ds_cursor)) {
name_to_errphys(head_ds_attr->za_name, &head_ds_block);
/*
* In case we are called from spa_sync the pool
* config is already held.
*/
if (!dsl_pool_config_held(dp)) {
dsl_pool_config_enter(dp, FTAG);
config_held = B_TRUE;
}
error = find_top_affected_fs(spa,
head_ds, &head_ds_block, &top_affected_fs);
if (error)
break;
error = scrub_filesystem(spa, top_affected_fs,
&head_ds_block, &i);
if (error == SET_ERROR(EFAULT)) {
limit_exceeded = B_TRUE;
break;
}
}
zap_cursor_fini(head_ds_cursor);
kmem_free(head_ds_cursor, sizeof (*head_ds_cursor));
kmem_free(head_ds_attr, sizeof (*head_ds_attr));
if (config_held)
dsl_pool_config_exit(dp, FTAG);
}
kmem_free(za, sizeof (*za));
kmem_free(zb, sizeof (*zb));
if (!limit_exceeded)
dsl_errorscrub_done(scn, B_TRUE, tx);
dsl_errorscrub_sync_state(scn, tx);
}
/* /*
* This is the primary entry point for scans that is called from syncing * This is the primary entry point for scans that is called from syncing
* context. Scans must happen entirely during syncing context so that we * context. Scans must happen entirely during syncing context so that we
@ -4109,7 +4784,14 @@ dsl_scan_scrub_done(zio_t *zio)
if (zio->io_error && (zio->io_error != ECKSUM || if (zio->io_error && (zio->io_error != ECKSUM ||
!(zio->io_flags & ZIO_FLAG_SPECULATIVE))) { !(zio->io_flags & ZIO_FLAG_SPECULATIVE))) {
atomic_inc_64(&spa->spa_dsl_pool->dp_scan->scn_phys.scn_errors); if (dsl_errorscrubbing(spa->spa_dsl_pool) &&
!dsl_errorscrub_is_paused(spa->spa_dsl_pool->dp_scan)) {
atomic_inc_64(&spa->spa_dsl_pool->dp_scan
->errorscrub_phys.dep_errors);
} else {
atomic_inc_64(&spa->spa_dsl_pool->dp_scan->scn_phys
.scn_errors);
}
} }
} }
@ -4559,3 +5241,7 @@ ZFS_MODULE_PARAM(zfs, zfs_, scan_report_txgs, UINT, ZMOD_RW,
ZFS_MODULE_PARAM(zfs, zfs_, resilver_disable_defer, INT, ZMOD_RW, ZFS_MODULE_PARAM(zfs, zfs_, resilver_disable_defer, INT, ZMOD_RW,
"Process all resilvers immediately"); "Process all resilvers immediately");
ZFS_MODULE_PARAM(zfs, zfs_, scrub_error_blocks_per_txg, U64, ZMOD_RW,
"Error blocks to be scrubbed in one txg");
/* END CSTYLED */

6
module/zfs/spa.c
View File

@ -8173,6 +8173,7 @@ spa_scan_stop(spa_t *spa)
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0);
if (dsl_scan_resilvering(spa->spa_dsl_pool)) if (dsl_scan_resilvering(spa->spa_dsl_pool))
return (SET_ERROR(EBUSY)); return (SET_ERROR(EBUSY));
return (dsl_scan_cancel(spa->spa_dsl_pool)); return (dsl_scan_cancel(spa->spa_dsl_pool));
} }
@ -8198,6 +8199,10 @@ spa_scan(spa_t *spa, pool_scan_func_t func)
return (0); return (0);
} }
if (func == POOL_SCAN_ERRORSCRUB &&
!spa_feature_is_enabled(spa, SPA_FEATURE_HEAD_ERRLOG))
return (SET_ERROR(ENOTSUP));
return (dsl_scan(spa->spa_dsl_pool, func)); return (dsl_scan(spa->spa_dsl_pool, func));
} }
@ -9249,6 +9254,7 @@ spa_sync_iterate_to_convergence(spa_t *spa, dmu_tx_t *tx)
brt_sync(spa, txg); brt_sync(spa, txg);
ddt_sync(spa, txg); ddt_sync(spa, txg);
dsl_scan_sync(dp, tx); dsl_scan_sync(dp, tx);
dsl_errorscrub_sync(dp, tx);
svr_sync(spa, tx); svr_sync(spa, tx);
spa_sync_upgrades(spa, tx); spa_sync_upgrades(spa, tx);

82
module/zfs/spa_errlog.c
View File

@ -110,7 +110,7 @@ errphys_to_name(zbookmark_err_phys_t *zep, char *buf, size_t len)
/* /*
* Convert a string to a err_phys. * Convert a string to a err_phys.
*/ */
static void void
name_to_errphys(char *buf, zbookmark_err_phys_t *zep) name_to_errphys(char *buf, zbookmark_err_phys_t *zep)
{ {
zep->zb_object = zfs_strtonum(buf, &buf); zep->zb_object = zfs_strtonum(buf, &buf);
@ -139,8 +139,7 @@ name_to_bookmark(char *buf, zbookmark_phys_t *zb)
ASSERT(*buf == '\0'); ASSERT(*buf == '\0');
} }
#ifdef _KERNEL void
static void
zep_to_zb(uint64_t dataset, zbookmark_err_phys_t *zep, zbookmark_phys_t *zb) zep_to_zb(uint64_t dataset, zbookmark_err_phys_t *zep, zbookmark_phys_t *zb)
{ {
zb->zb_objset = dataset; zb->zb_objset = dataset;
@ -148,7 +147,6 @@ zep_to_zb(uint64_t dataset, zbookmark_err_phys_t *zep, zbookmark_phys_t *zb)
zb->zb_level = zep->zb_level; zb->zb_level = zep->zb_level;
zb->zb_blkid = zep->zb_blkid; zb->zb_blkid = zep->zb_blkid;
} }
#endif
static void static void
name_to_object(char *buf, uint64_t *obj) name_to_object(char *buf, uint64_t *obj)
@ -238,8 +236,7 @@ spa_log_error(spa_t *spa, const zbookmark_phys_t *zb, const uint64_t *birth)
mutex_exit(&spa->spa_errlist_lock); mutex_exit(&spa->spa_errlist_lock);
} }
#ifdef _KERNEL int
static int
find_birth_txg(dsl_dataset_t *ds, zbookmark_err_phys_t *zep, find_birth_txg(dsl_dataset_t *ds, zbookmark_err_phys_t *zep,
uint64_t *birth_txg) uint64_t *birth_txg)
{ {
@ -267,6 +264,34 @@ find_birth_txg(dsl_dataset_t *ds, zbookmark_err_phys_t *zep,
return (error); return (error);
} }
/*
* This function finds the oldest affected filesystem containing an error
* block.
*/
int
find_top_affected_fs(spa_t *spa, uint64_t head_ds, zbookmark_err_phys_t *zep,
uint64_t *top_affected_fs)
{
uint64_t oldest_dsobj;
int error = dsl_dataset_oldest_snapshot(spa, head_ds, zep->zb_birth,
&oldest_dsobj);
if (error != 0)
return (error);
dsl_dataset_t *ds;
error = dsl_dataset_hold_obj_flags(spa->spa_dsl_pool, oldest_dsobj,
DS_HOLD_FLAG_DECRYPT, FTAG, &ds);
if (error != 0)
return (error);
*top_affected_fs =
dsl_dir_phys(ds->ds_dir)->dd_head_dataset_obj;
dsl_dataset_rele_flags(ds, DS_HOLD_FLAG_DECRYPT, FTAG);
return (0);
}
#ifdef _KERNEL
/* /*
* Copy the bookmark to the end of the user-space buffer which starts at * Copy the bookmark to the end of the user-space buffer which starts at
* uaddr and has *count unused entries, and decrement *count by 1. * uaddr and has *count unused entries, and decrement *count by 1.
@ -288,7 +313,8 @@ copyout_entry(const zbookmark_phys_t *zb, void *uaddr, uint64_t *count)
* Each time the error block is referenced by a snapshot or clone, add a * Each time the error block is referenced by a snapshot or clone, add a
* zbookmark_phys_t entry to the userspace array at uaddr. The array is * zbookmark_phys_t entry to the userspace array at uaddr. The array is
* filled from the back and the in-out parameter *count is modified to be the * filled from the back and the in-out parameter *count is modified to be the
* number of unused entries at the beginning of the array. * number of unused entries at the beginning of the array. The function
* scrub_filesystem() is modelled after this one.
*/ */
static int static int
check_filesystem(spa_t *spa, uint64_t head_ds, zbookmark_err_phys_t *zep, check_filesystem(spa_t *spa, uint64_t head_ds, zbookmark_err_phys_t *zep,
@ -449,28 +475,6 @@ out:
return (error); return (error);
} }
static int
find_top_affected_fs(spa_t *spa, uint64_t head_ds, zbookmark_err_phys_t *zep,
uint64_t *top_affected_fs)
{
uint64_t oldest_dsobj;
int error = dsl_dataset_oldest_snapshot(spa, head_ds, zep->zb_birth,
&oldest_dsobj);
if (error != 0)
return (error);
dsl_dataset_t *ds;
error = dsl_dataset_hold_obj_flags(spa->spa_dsl_pool, oldest_dsobj,
DS_HOLD_FLAG_DECRYPT, FTAG, &ds);
if (error != 0)
return (error);
*top_affected_fs =
dsl_dir_phys(ds->ds_dir)->dd_head_dataset_obj;
dsl_dataset_rele_flags(ds, DS_HOLD_FLAG_DECRYPT, FTAG);
return (0);
}
static int static int
process_error_block(spa_t *spa, uint64_t head_ds, zbookmark_err_phys_t *zep, process_error_block(spa_t *spa, uint64_t head_ds, zbookmark_err_phys_t *zep,
void *uaddr, uint64_t *count) void *uaddr, uint64_t *count)
@ -536,6 +540,21 @@ process_error_block(spa_t *spa, uint64_t head_ds, zbookmark_err_phys_t *zep,
} }
#endif #endif
/* Return the number of errors in the error log */
uint64_t
spa_get_last_errlog_size(spa_t *spa)
{
uint64_t total = 0, count;
mutex_enter(&spa->spa_errlog_lock);
if (spa->spa_errlog_last != 0 &&
zap_count(spa->spa_meta_objset, spa->spa_errlog_last,
&count) == 0)
total += count;
mutex_exit(&spa->spa_errlog_lock);
return (total);
}
/* /*
* If a healed bookmark matches an entry in the error log we stash it in a tree * If a healed bookmark matches an entry in the error log we stash it in a tree
* so that we can later remove the related log entries in sync context. * so that we can later remove the related log entries in sync context.
@ -1447,6 +1466,7 @@ spa_swap_errlog(spa_t *spa, uint64_t new_head_ds, uint64_t old_head_ds,
/* error handling */ /* error handling */
EXPORT_SYMBOL(spa_log_error); EXPORT_SYMBOL(spa_log_error);
EXPORT_SYMBOL(spa_approx_errlog_size); EXPORT_SYMBOL(spa_approx_errlog_size);
EXPORT_SYMBOL(spa_get_last_errlog_size);
EXPORT_SYMBOL(spa_get_errlog); EXPORT_SYMBOL(spa_get_errlog);
EXPORT_SYMBOL(spa_errlog_rotate); EXPORT_SYMBOL(spa_errlog_rotate);
EXPORT_SYMBOL(spa_errlog_drain); EXPORT_SYMBOL(spa_errlog_drain);
@ -1456,6 +1476,10 @@ EXPORT_SYMBOL(spa_delete_dataset_errlog);
EXPORT_SYMBOL(spa_swap_errlog); EXPORT_SYMBOL(spa_swap_errlog);
EXPORT_SYMBOL(sync_error_list); EXPORT_SYMBOL(sync_error_list);
EXPORT_SYMBOL(spa_upgrade_errlog); EXPORT_SYMBOL(spa_upgrade_errlog);
EXPORT_SYMBOL(find_top_affected_fs);
EXPORT_SYMBOL(find_birth_txg);
EXPORT_SYMBOL(zep_to_zb);
EXPORT_SYMBOL(name_to_errphys);
#endif #endif
/* BEGIN CSTYLED */ /* BEGIN CSTYLED */

25
module/zfs/spa_misc.c
View File

@ -2579,9 +2579,18 @@ spa_scan_stat_init(spa_t *spa)
spa->spa_scan_pass_scrub_pause = spa->spa_scan_pass_start; spa->spa_scan_pass_scrub_pause = spa->spa_scan_pass_start;
else else
spa->spa_scan_pass_scrub_pause = 0; spa->spa_scan_pass_scrub_pause = 0;
if (dsl_errorscrub_is_paused(spa->spa_dsl_pool->dp_scan))
spa->spa_scan_pass_errorscrub_pause = spa->spa_scan_pass_start;
else
spa->spa_scan_pass_errorscrub_pause = 0;
spa->spa_scan_pass_scrub_spent_paused = 0; spa->spa_scan_pass_scrub_spent_paused = 0;
spa->spa_scan_pass_exam = 0; spa->spa_scan_pass_exam = 0;
spa->spa_scan_pass_issued = 0; spa->spa_scan_pass_issued = 0;
// error scrub stats
spa->spa_scan_pass_errorscrub_spent_paused = 0;
} }
/* /*
@ -2592,8 +2601,10 @@ spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps)
{ {
dsl_scan_t *scn = spa->spa_dsl_pool ? spa->spa_dsl_pool->dp_scan : NULL; dsl_scan_t *scn = spa->spa_dsl_pool ? spa->spa_dsl_pool->dp_scan : NULL;
if (scn == NULL || scn->scn_phys.scn_func == POOL_SCAN_NONE) if (scn == NULL || (scn->scn_phys.scn_func == POOL_SCAN_NONE &&
scn->errorscrub_phys.dep_func == POOL_SCAN_NONE))
return (SET_ERROR(ENOENT)); return (SET_ERROR(ENOENT));
memset(ps, 0, sizeof (pool_scan_stat_t)); memset(ps, 0, sizeof (pool_scan_stat_t));
/* data stored on disk */ /* data stored on disk */
@ -2616,6 +2627,18 @@ spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps)
ps->pss_issued = ps->pss_issued =
scn->scn_issued_before_pass + spa->spa_scan_pass_issued; scn->scn_issued_before_pass + spa->spa_scan_pass_issued;
/* error scrub data stored on disk */
ps->pss_error_scrub_func = scn->errorscrub_phys.dep_func;
ps->pss_error_scrub_state = scn->errorscrub_phys.dep_state;
ps->pss_error_scrub_start = scn->errorscrub_phys.dep_start_time;
ps->pss_error_scrub_end = scn->errorscrub_phys.dep_end_time;
ps->pss_error_scrub_examined = scn->errorscrub_phys.dep_examined;
ps->pss_error_scrub_to_be_examined =
scn->errorscrub_phys.dep_to_examine;
/* error scrub data not stored on disk */
ps->pss_pass_error_scrub_pause = spa->spa_scan_pass_errorscrub_pause;
return (0); return (0);
} }

46
module/zfs/zfs_ioctl.c
View File

@ -1685,6 +1685,47 @@ zfs_ioc_pool_scan(zfs_cmd_t *zc)
return (error); return (error);
} }
/*
* inputs:
* poolname name of the pool
* scan_type scan func (pool_scan_func_t)
* scan_command scrub pause/resume flag (pool_scrub_cmd_t)
*/
static const zfs_ioc_key_t zfs_keys_pool_scrub[] = {
{"scan_type", DATA_TYPE_UINT64, 0},
{"scan_command", DATA_TYPE_UINT64, 0},
};
static int
zfs_ioc_pool_scrub(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
{
spa_t *spa;
int error;
uint64_t scan_type, scan_cmd;
if (nvlist_lookup_uint64(innvl, "scan_type", &scan_type) != 0)
return (SET_ERROR(EINVAL));
if (nvlist_lookup_uint64(innvl, "scan_command", &scan_cmd) != 0)
return (SET_ERROR(EINVAL));
if (scan_cmd >= POOL_SCRUB_FLAGS_END)
return (SET_ERROR(EINVAL));
if ((error = spa_open(poolname, &spa, FTAG)) != 0)
return (error);
if (scan_cmd == POOL_SCRUB_PAUSE) {
error = spa_scrub_pause_resume(spa, POOL_SCRUB_PAUSE);
} else if (scan_type == POOL_SCAN_NONE) {
error = spa_scan_stop(spa);
} else {
error = spa_scan(spa, scan_type);
}
spa_close(spa, FTAG);
return (error);
}
static int static int
zfs_ioc_pool_freeze(zfs_cmd_t *zc) zfs_ioc_pool_freeze(zfs_cmd_t *zc)
{ {
@ -7218,6 +7259,11 @@ zfs_ioctl_init(void)
POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE,
zfs_keys_vdev_set_props, ARRAY_SIZE(zfs_keys_vdev_set_props)); zfs_keys_vdev_set_props, ARRAY_SIZE(zfs_keys_vdev_set_props));
zfs_ioctl_register("scrub", ZFS_IOC_POOL_SCRUB,
zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME,
POOL_CHECK_NONE, B_TRUE, B_TRUE,
zfs_keys_pool_scrub, ARRAY_SIZE(zfs_keys_pool_scrub));
/* IOCTLS that use the legacy function signature */ /* IOCTLS that use the legacy function signature */
zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze, zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze,

4
tests/runfiles/common.run
View File

@ -479,7 +479,9 @@ tags = ['functional', 'cli_root', 'zpool_resilver']
tests = ['zpool_scrub_001_neg', 'zpool_scrub_002_pos', 'zpool_scrub_003_pos', tests = ['zpool_scrub_001_neg', 'zpool_scrub_002_pos', 'zpool_scrub_003_pos',
'zpool_scrub_004_pos', 'zpool_scrub_005_pos', 'zpool_scrub_004_pos', 'zpool_scrub_005_pos',
'zpool_scrub_encrypted_unloaded', 'zpool_scrub_print_repairing', 'zpool_scrub_encrypted_unloaded', 'zpool_scrub_print_repairing',
'zpool_scrub_offline_device', 'zpool_scrub_multiple_copies'] 'zpool_scrub_offline_device', 'zpool_scrub_multiple_copies',
'zpool_error_scrub_001_pos', 'zpool_error_scrub_002_pos',
'zpool_error_scrub_003_pos', 'zpool_error_scrub_004_pos']
tags = ['functional', 'cli_root', 'zpool_scrub'] tags = ['functional', 'cli_root', 'zpool_scrub']
[tests/functional/cli_root/zpool_set] [tests/functional/cli_root/zpool_set]

15
tests/zfs-tests/cmd/libzfs_input_check.c
View File

@ -27,6 +27,7 @@
#include <sys/vdev_impl.h> #include <sys/vdev_impl.h>
#include <sys/zfs_ioctl.h> #include <sys/zfs_ioctl.h>
#include <sys/zfs_bootenv.h> #include <sys/zfs_bootenv.h>
#include <sys/fs/zfs.h>
/* /*
* Test the nvpair inputs for the non-legacy zfs ioctl commands. * Test the nvpair inputs for the non-legacy zfs ioctl commands.
@ -688,6 +689,17 @@ test_vdev_trim(const char *pool)
nvlist_free(required); nvlist_free(required);
} }
/* Test with invalid values */
static void
test_scrub(const char *pool)
{
nvlist_t *required = fnvlist_alloc();
fnvlist_add_uint64(required, "scan_type", POOL_SCAN_FUNCS + 1);
fnvlist_add_uint64(required, "scan_command", POOL_SCRUB_FLAGS_END + 1);
IOC_INPUT_TEST(ZFS_IOC_POOL_SCRUB, pool, required, NULL, EINVAL);
nvlist_free(required);
}
static int static int
zfs_destroy(const char *dataset) zfs_destroy(const char *dataset)
{ {
@ -868,6 +880,8 @@ zfs_ioc_input_tests(const char *pool)
test_set_bootenv(pool); test_set_bootenv(pool);
test_get_bootenv(pool); test_get_bootenv(pool);
test_scrub(pool);
/* /*
* cleanup * cleanup
*/ */
@ -1022,6 +1036,7 @@ validate_ioc_values(void)
CHECK(ZFS_IOC_BASE + 82 == ZFS_IOC_GET_BOOKMARK_PROPS); CHECK(ZFS_IOC_BASE + 82 == ZFS_IOC_GET_BOOKMARK_PROPS);
CHECK(ZFS_IOC_BASE + 83 == ZFS_IOC_WAIT); CHECK(ZFS_IOC_BASE + 83 == ZFS_IOC_WAIT);
CHECK(ZFS_IOC_BASE + 84 == ZFS_IOC_WAIT_FS); CHECK(ZFS_IOC_BASE + 84 == ZFS_IOC_WAIT_FS);
CHECK(ZFS_IOC_BASE + 87 == ZFS_IOC_POOL_SCRUB);
CHECK(ZFS_IOC_PLATFORM_BASE + 1 == ZFS_IOC_EVENTS_NEXT); CHECK(ZFS_IOC_PLATFORM_BASE + 1 == ZFS_IOC_EVENTS_NEXT);
CHECK(ZFS_IOC_PLATFORM_BASE + 2 == ZFS_IOC_EVENTS_CLEAR); CHECK(ZFS_IOC_PLATFORM_BASE + 2 == ZFS_IOC_EVENTS_CLEAR);
CHECK(ZFS_IOC_PLATFORM_BASE + 3 == ZFS_IOC_EVENTS_SEEK); CHECK(ZFS_IOC_PLATFORM_BASE + 3 == ZFS_IOC_EVENTS_SEEK);

18
tests/zfs-tests/include/libtest.shlib
View File

@ -1969,6 +1969,12 @@ function is_pool_scrubbing #pool <verbose>
check_pool_status "$1" "scan" "scrub in progress since " $2 check_pool_status "$1" "scan" "scrub in progress since " $2
} }
function is_pool_error_scrubbing #pool <verbose>
{
check_pool_status "$1" "scrub" "error scrub in progress since " $2
return $?
}
function is_pool_scrubbed #pool <verbose> function is_pool_scrubbed #pool <verbose>
{ {
check_pool_status "$1" "scan" "scrub repaired" $2 check_pool_status "$1" "scan" "scrub repaired" $2
@ -1979,11 +1985,23 @@ function is_pool_scrub_stopped #pool <verbose>
check_pool_status "$1" "scan" "scrub canceled" $2 check_pool_status "$1" "scan" "scrub canceled" $2
} }
function is_pool_error_scrub_stopped #pool <verbose>
{
check_pool_status "$1" "scrub" "error scrub canceled on " $2
return $?
}
function is_pool_scrub_paused #pool <verbose> function is_pool_scrub_paused #pool <verbose>
{ {
check_pool_status "$1" "scan" "scrub paused since " $2 check_pool_status "$1" "scan" "scrub paused since " $2
} }
function is_pool_error_scrub_paused #pool <verbose>
{
check_pool_status "$1" "scrub" "error scrub paused since " $2
return $?
}
function is_pool_removing #pool function is_pool_removing #pool
{ {
check_pool_status "$1" "remove" "in progress since " check_pool_status "$1" "remove" "in progress since "

4
tests/zfs-tests/tests/Makefile.am
View File

@ -1153,6 +1153,10 @@ nobase_dist_datadir_zfs_tests_tests_SCRIPTS += \
functional/cli_root/zpool_scrub/zpool_scrub_multiple_copies.ksh \ functional/cli_root/zpool_scrub/zpool_scrub_multiple_copies.ksh \
functional/cli_root/zpool_scrub/zpool_scrub_offline_device.ksh \ functional/cli_root/zpool_scrub/zpool_scrub_offline_device.ksh \
functional/cli_root/zpool_scrub/zpool_scrub_print_repairing.ksh \ functional/cli_root/zpool_scrub/zpool_scrub_print_repairing.ksh \
functional/cli_root/zpool_scrub/zpool_error_scrub_001_pos.ksh \
functional/cli_root/zpool_scrub/zpool_error_scrub_002_pos.ksh \
functional/cli_root/zpool_scrub/zpool_error_scrub_003_pos.ksh \
functional/cli_root/zpool_scrub/zpool_error_scrub_004_pos.ksh \
functional/cli_root/zpool_set/cleanup.ksh \ functional/cli_root/zpool_set/cleanup.ksh \
functional/cli_root/zpool_set/setup.ksh \ functional/cli_root/zpool_set/setup.ksh \
functional/cli_root/zpool/setup.ksh \ functional/cli_root/zpool/setup.ksh \

79
tests/zfs-tests/tests/functional/cli_root/zpool_scrub/zpool_error_scrub_001_pos.ksh Executable file
View File

@ -0,0 +1,79 @@
#!/bin/ksh -p
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# Copyright (c) 2019, Delphix. All rights reserved.
# Copyright (c) 2023, George Amanakis. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/cli_root/zpool_scrub/zpool_scrub.cfg
#
# DESCRIPTION:
# Verify scrub -e, -p, and -s show the right status.
#
# STRATEGY:
# 1. Create a pool and create a 10MB file in it.
# 2. Start a error scrub (-e) and verify it's doing a scrub.
# 3. Pause error scrub (-p) and verify it's paused.
# 4. Try to pause a paused error scrub (-p) and make sure that fails.
# 5. Resume the paused error scrub and verify again it's doing a scrub.
# 6. Verify zpool scrub -s succeed when the system is error scrubbing.
#
verify_runnable "global"
function cleanup
{
log_must set_tunable32 SCAN_SUSPEND_PROGRESS 0
log_must zinject -c all
rm -f /$TESTPOOL/10m_file
}
log_onexit cleanup
log_assert "Verify scrub -e, -p, and -s show the right status."
log_must fio --rw=write --name=job --size=10M --filename=/$TESTPOOL/10m_file
log_must zpool export $TESTPOOL
log_must zpool import $TESTPOOL
log_must zinject -t data -e checksum -f 100 -am /$TESTPOOL/10m_file
# create some error blocks
dd if=/$TESTPOOL/10m_file bs=1M count=1 || true
# sync error blocks to disk
log_must sync_pool $TESTPOOL
log_must set_tunable32 SCAN_SUSPEND_PROGRESS 1
log_must zpool scrub -e $TESTPOOL
log_must is_pool_error_scrubbing $TESTPOOL true
log_must zpool scrub -p $TESTPOOL
log_must is_pool_error_scrub_paused $TESTPOOL true
log_mustnot zpool scrub -p $TESTPOOL
log_must is_pool_error_scrub_paused $TESTPOOL true
log_must zpool scrub -e $TESTPOOL
log_must is_pool_error_scrubbing $TESTPOOL true
log_must zpool scrub -s $TESTPOOL
log_must is_pool_error_scrub_stopped $TESTPOOL true
log_pass "Verified scrub -e, -p, and -s show expected status."

99
tests/zfs-tests/tests/functional/cli_root/zpool_scrub/zpool_error_scrub_002_pos.ksh Executable file
View File

@ -0,0 +1,99 @@
#!/bin/ksh -p
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# Copyright (c) 2019, Delphix. All rights reserved.
# Copyright (c) 2023, George Amanakis. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/cli_root/zpool_scrub/zpool_scrub.cfg
#
# DESCRIPTION:
# Verify regular scrub and error scrub can't run at the same time.
#
# STRATEGY:
# 1. Create a pool and create a 10MB file in it.
# 2. Start a scrub and verify it's doing a scrub.
# 3. Start a error scrub (-e) and verify it fails.
# 4. Pause scrub (-p) and verify it's paused.
# 5. Start a error scrub (-e) verify it fails again.
# 6. Resume the paused scrub, verify it and cancel it.
# 7. Start a error scrub (-e) and verify it's doing error scrub.
# 8. Start a scrub and verify it fails.
# 9. Cancel error scrub (-e) and verify it is canceled.
# 10. Start scrub, verify it, cancel it and verify it.
#
verify_runnable "global"
function cleanup
{
log_must set_tunable32 SCAN_SUSPEND_PROGRESS 0
log_must zinject -c all
rm -f /$TESTPOOL/10m_file
}
log_onexit cleanup
log_assert "Verify regular scrub and error scrub can't run at the same time."
log_must fio --rw=write --name=job --size=10M --filename=/$TESTPOOL/10m_file
log_must zpool export $TESTPOOL
log_must zpool import $TESTPOOL
log_must zinject -t data -e checksum -f 100 -am /$TESTPOOL/10m_file
# create some error blocks before error scrub is requested.
dd if=/$TESTPOOL/10m_file bs=1M count=1 || true
# sync error blocks to disk
log_must sync_pool $TESTPOOL
log_must set_tunable32 SCAN_SUSPEND_PROGRESS 1
log_must zpool scrub $TESTPOOL
log_must is_pool_scrubbing $TESTPOOL true
log_mustnot zpool scrub -e $TESTPOOL
log_must zpool scrub -p $TESTPOOL
log_must is_pool_scrub_paused $TESTPOOL true
log_mustnot zpool scrub -e $TESTPOOL
log_must zpool scrub $TESTPOOL
log_must is_pool_scrubbing $TESTPOOL true
log_must zpool scrub -s $TESTPOOL
log_must is_pool_scrub_stopped $TESTPOOL true
# create some error blocks before error scrub is requested.
dd if=/$TESTPOOL/10m_file bs=1M count=1 || true
# sync error blocks to disk
log_must sync_pool $TESTPOOL
log_must zpool scrub -e $TESTPOOL
log_must is_pool_error_scrubbing $TESTPOOL true
log_mustnot zpool scrub $TESTPOOL
log_must zpool scrub -s $TESTPOOL
log_must is_pool_error_scrub_stopped $TESTPOOL true
log_must zpool scrub $TESTPOOL
log_must is_pool_scrubbing $TESTPOOL true
log_must zpool scrub -s $TESTPOOL
log_must is_pool_scrub_stopped $TESTPOOL true
log_pass "Verified regular scrub and error scrub can't run at the same time."

109
tests/zfs-tests/tests/functional/cli_root/zpool_scrub/zpool_error_scrub_003_pos.ksh Executable file
View File

@ -0,0 +1,109 @@
#!/bin/ksh -p
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# Copyright (c) 2019, Delphix. All rights reserved.
# Copyright (c) 2023, George Amanakis. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/cli_root/zpool_scrub/zpool_scrub.cfg
#
# DESCRIPTION:
# Verify error scrub clears the errorlog, if errors no longer exist.
#
# STRATEGY:
# 1. Create a pool and create file in it.
# 2. Zinject errors and read using dd to log errors to disk.
# 3. Make sure file name is mentioned in the list of error files.
# 4. Start error scrub and wait for it finish.
# 5. Check scrub ran and errors are still reported.
# 6. Clear corruption and error scrub again.
# 7. Check scrub ran and errors are cleared.
#
verify_runnable "global"
function cleanup
{
zinject -c all
rm -f /$TESTPOOL2/$TESTFILE0
destroy_pool $TESTPOOL2
}
log_onexit cleanup
log_assert "Verify error scrub clears the errorlog, if errors no longer exist."
truncate -s $MINVDEVSIZE $TESTDIR/vdev_a
log_must zpool create -f -O primarycache=none $TESTPOOL2 $TESTDIR/vdev_a
log_must zfs create $TESTPOOL2/$TESTFS1
typeset file=/$TESTPOOL2/$TESTFS1/$TESTFILE0
log_must dd if=/dev/urandom of=$file bs=2M count=10
lastfs="$(zfs list -r $TESTPOOL2 | tail -1 | awk '{print $1}')"
for i in {1..3}; do
log_must zfs snap $lastfs@snap$i
log_must zfs clone $lastfs@snap$i $TESTPOOL2/clone$i
lastfs="$(zfs list -r $TESTPOOL2/clone$i | tail -1 | awk '{print $1}')"
done
log_must zinject -t data -e checksum -f 100 -a $file
dd if=$file of=/dev/null bs=2M count=10
# Important: sync error log to disk
log_must sync_pool $TESTPOOL2
# Check reported errors
log_must zpool status -v $TESTPOOL2
log_must eval "zpool status -v $TESTPOOL2 | \
grep \"Permanent errors have been detected\""
log_must eval "zpool status -v | grep '$TESTPOOL2/$TESTFS1/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/$TESTFS1@snap1:/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/clone1/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/clone1@snap2:/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/clone2/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/clone2@snap3:/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/clone3/$TESTFILE0'"
# Check errors are reported if corruption persists
log_must zpool scrub -e -w $TESTPOOL2
log_must eval "zpool status -v | grep 'error blocks'"
log_must zpool status -v $TESTPOOL2
log_must eval "zpool status -v $TESTPOOL2 | \
grep \"Permanent errors have been detected\""
log_must eval "zpool status -v | grep '$TESTPOOL2/$TESTFS1/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/$TESTFS1@snap1:/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/clone1/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/clone1@snap2:/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/clone2/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/clone2@snap3:/$TESTFILE0'"
log_must eval "zpool status -v | grep '$TESTPOOL2/clone3/$TESTFILE0'"
# Check errors are cleared
log_must zinject -c all
log_must zpool scrub -e -w $TESTPOOL2
log_must zpool status -v $TESTPOOL2
log_must eval "zpool status -v | grep 'error blocks'"
log_mustnot eval "zpool status -v | grep '$TESTFILE0'"
log_pass "Verify error scrub clears the errorlog, if errors no longer exist."

54
tests/zfs-tests/tests/functional/cli_root/zpool_scrub/zpool_error_scrub_004_pos.ksh Executable file
View File

@ -0,0 +1,54 @@
#!/bin/ksh -p
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# Copyright (c) 2023, George Amanakis. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/cli_root/zpool_scrub/zpool_scrub.cfg
#
# DESCRIPTION:
# Verify error scrub clears the errorlog, if errors no longer exist.
#
# STRATEGY:
# 1. Create a pool with head_errlog disabled.
# 2. Run an error scrub and verify it is not supported.
#
verify_runnable "global"
function cleanup
{
rm -f /$TESTPOOL2/$TESTFILE0
destroy_pool $TESTPOOL2
}
log_onexit cleanup
log_assert "Verify error scrub cannot run without the head_errlog feature."
truncate -s $MINVDEVSIZE $TESTDIR/vdev_a
log_must zpool create -f -o feature@head_errlog=disabled $TESTPOOL2 $TESTDIR/vdev_a
log_mustnot zpool scrub -ew $TESTPOOL2
log_pass "Verify error scrub cannot run without the head_errlog feature."