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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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man/man8/zpool.8
+10 -2
View File
@@ -182,7 +182,7 @@
.Nm
.Cm status
.Oo Fl c Ar SCRIPT Oc
.Op Fl gLPvxD
.Op Fl DgLpPsvx
.Op Fl T Sy u Ns | Ns Sy d
.Oo Ar pool Oc Ns ...
.Op Ar interval Op Ar count
@@ -2167,7 +2167,7 @@ and automatically import it.
.Nm
.Cm status
.Op Fl c Op Ar SCRIPT1 Ns Oo , Ns Ar SCRIPT2 Oc Ns ...
.Op Fl gLPvxD
.Op Fl DgLpPsvx
.Op Fl T Sy u Ns | Ns Sy d
.Oo Ar pool Oc Ns ...
.Op Ar interval Op Ar count
@@ -2203,6 +2203,8 @@ Display real paths for vdevs resolving all symbolic links. This can
be used to look up the current block device name regardless of the
.Pa /dev/disk/
path used to open it.
.It Fl p
Display numbers in parsable (exact) values.
.It Fl P
Display full paths for vdevs instead of only the last component of
the path. This can be used in conjunction with the
@@ -2214,6 +2216,12 @@ Display a histogram of deduplication statistics, showing the allocated
and referenced
.Pq logically referenced in the pool
block counts and sizes by reference count.
.It Fl s
Display the number of leaf VDEV slow IOs. This is the number of IOs that
didn't complete in \fBzio_slow_io_ms\fR milliseconds (default 30 seconds).
This does not necessarily mean the IOs failed to complete, just took an
unreasonably long amount of time. This may indicate a problem with the
underlying storage.
.It Fl T Sy u Ns | Ns Sy d
Display a time stamp.
Specify