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Add zpool status -s (slow I/Os) and -p (parseable)

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This patch adds a new slow I/Os (-s) column to zpool status to show the
number of VDEV slow I/Os. This is the number of I/Os that didn't
complete in zio_slow_io_ms milliseconds. It also adds a new parsable
(-p) flag to display exact values.

 	NAME         STATE     READ WRITE CKSUM  SLOW
 	testpool     ONLINE       0     0     0     -
	  mirror-0   ONLINE       0     0     0     -
 	    loop0    ONLINE       0     0     0    20
 	    loop1    ONLINE       0     0     0     0

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #7756
Closes #6885
This commit is contained in:
Tony Hutter
2018-11-08 16:47:24 -08:00
committed by Brian Behlendorf
parent 877d925a9e
commit ad796b8a3b
16 changed files with 321 additions and 136 deletions
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include/sys/spa.h
+3 -1
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@@ -1076,9 +1076,11 @@ extern const char *spa_state_to_name(spa_t *spa);
/* error handling */
struct zbookmark_phys;
extern void spa_log_error(spa_t *spa, const zbookmark_phys_t *zb);
extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
extern int zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
const zbookmark_phys_t *zb, zio_t *zio, uint64_t stateoroffset,
uint64_t length);
extern boolean_t zfs_ereport_is_valid(const char *class, spa_t *spa, vdev_t *vd,
zio_t *zio);
extern nvlist_t *zfs_event_create(spa_t *spa, vdev_t *vd, const char *type,
const char *name, nvlist_t *aux);
extern void zfs_post_remove(spa_t *spa, vdev_t *vd);