c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 18:40:43 +03:00
Code Issues Packages Projects Releases Wiki Activity

Add DDT prune command

Browse Source 
Requires the new 'flat' physical data which has the start
time for a class entry.

The amount to prune can be based on a target percentage of
the unique entries or based on the age (i.e., every entry
older than N days).

Sponsored-by: Klara, Inc.
Sponsored-by: iXsystems, Inc.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Don Brady <don.brady@klarasystems.com>
Closes #16277
This commit is contained in:
Don Brady
2024-06-17 22:35:18 +00:00
committed by Brian Behlendorf
parent 4a4f7b019f
commit d4d79451cb
21 changed files with 905 additions and 85 deletions
Download Patch File Download Diff File Expand all files Collapse all files
cmd/zpool/zpool_main.c
+89
View File
@@ -130,6 +130,8 @@ static int zpool_do_version(int, char **);
static int zpool_do_wait(int, char **);
static int zpool_do_ddt_prune(int, char **);
static int zpool_do_help(int argc, char **argv);
static zpool_compat_status_t zpool_do_load_compat(
@@ -170,6 +172,7 @@ typedef enum {
HELP_CLEAR,
HELP_CREATE,
HELP_CHECKPOINT,
HELP_DDT_PRUNE,
HELP_DESTROY,
HELP_DETACH,
HELP_EXPORT,
@@ -426,6 +429,8 @@ static zpool_command_t command_table[] = {
{ "sync", zpool_do_sync, HELP_SYNC },
{ NULL },
{ "wait", zpool_do_wait, HELP_WAIT },
{ NULL },
{ "ddtprune", zpool_do_ddt_prune, HELP_DDT_PRUNE },
};
#define NCOMMAND (ARRAY_SIZE(command_table))
@@ -545,6 +550,8 @@ get_usage(zpool_help_t idx)
case HELP_WAIT:
return (gettext("\twait [-Hp] [-T d|u] [-t <activity>[,...]] "
"<pool> [interval]\n"));
case HELP_DDT_PRUNE:
return (gettext("\tddtprune -d|-p <amount> <pool>\n"));
default:
__builtin_unreachable();
}
@@ -13342,6 +13349,88 @@ found:;
return (error);
}
/*
* zpool ddtprune -d|-p <amount> <pool>
*
* -d <days> Prune entries <days> old and older
* -p <percent> Prune <percent> amount of entries
*
* Prune single reference entries from DDT to satisfy the amount specified.
*/
int
zpool_do_ddt_prune(int argc, char **argv)
{
zpool_ddt_prune_unit_t unit = ZPOOL_DDT_PRUNE_NONE;
uint64_t amount = 0;
zpool_handle_t *zhp;
char *endptr;
int c;
while ((c = getopt(argc, argv, "d:p:")) != -1) {
switch (c) {
case 'd':
if (unit == ZPOOL_DDT_PRUNE_PERCENTAGE) {
(void) fprintf(stderr, gettext("-d cannot be "
"combined with -p option\n"));
usage(B_FALSE);
}
errno = 0;
amount = strtoull(optarg, &endptr, 0);
if (errno != 0 || *endptr != '\0' || amount == 0) {
(void) fprintf(stderr,
gettext("invalid days value\n"));
usage(B_FALSE);
}
amount *= 86400; /* convert days to seconds */
unit = ZPOOL_DDT_PRUNE_AGE;
break;
case 'p':
if (unit == ZPOOL_DDT_PRUNE_AGE) {
(void) fprintf(stderr, gettext("-p cannot be "
"combined with -d option\n"));
usage(B_FALSE);
}
errno = 0;
amount = strtoull(optarg, &endptr, 0);
if (errno != 0 || *endptr != '\0' ||
amount == 0 || amount > 100) {
(void) fprintf(stderr,
gettext("invalid percentage value\n"));
usage(B_FALSE);
}
unit = ZPOOL_DDT_PRUNE_PERCENTAGE;
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
if (unit == ZPOOL_DDT_PRUNE_NONE) {
(void) fprintf(stderr,
gettext("missing amount option (-d|-p <value>)\n"));
usage(B_FALSE);
} else if (argc < 1) {
(void) fprintf(stderr, gettext("missing pool argument\n"));
usage(B_FALSE);
} else if (argc > 1) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
zhp = zpool_open(g_zfs, argv[0]);
if (zhp == NULL)
return (-1);
int error = zpool_ddt_prune(zhp, unit, amount);
zpool_close(zhp);
return (error);
}
static int
find_command_idx(const char *command, int *idx)
{