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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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module/zfs/vdev_label.c
+3
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@@ -347,6 +347,9 @@ vdev_config_generate_stats(vdev_t *vd, nvlist_t *nv)
vsx->vsx_agg_histo[ZIO_PRIORITY_SCRUB],
ARRAY_SIZE(vsx->vsx_agg_histo[ZIO_PRIORITY_SCRUB]));
/* IO delays */
fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_SLOW_IOS, vs->vs_slow_ios);
/* Add extended stats nvlist to main nvlist */
fnvlist_add_nvlist(nv, ZPOOL_CONFIG_VDEV_STATS_EX, nvx);