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Teach zpool scrub to scrub only blocks in error log

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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
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include/sys/spa.h
+8
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@@ -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 uint64_t spa_approx_errlog_size(spa_t *spa);
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_drain(spa_t *spa);
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,
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 */
extern void vdev_cache_stat_init(void);