diff options
| author | Saso Kiselkov <[email protected]> | 2014-05-22 10:11:57 +0100 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2014-08-06 13:44:10 -0700 |
| commit | 3bec585e6c86de869ba1bf132567ed2a01d6a15b (patch) | |
| tree | 80ec043259c69f89dd3f82777caaaddc0ac82f12 /module/zfs/zfs_ctldir.c | |
| parent | fbeddd60b79690b6a6ececc9b00b6014d21405aa (diff) | |
Illumos 4897 - Space accounting mismatch in L2ARC/zpool
4897 Space accounting mismatch in L2ARC/zpool
Reviewed by: Matthew Ahrens <[email protected]>
Reviewed by: Boris Protopopov <[email protected]>
Approved by: Dan McDonald <[email protected]>
From the illumos issue tracker:
L2ARC vdev space usage statistics are calculated as the delta
between the maximum and minimum vdev offset ever written to
by the L2ARC fill thread, but do not inform the user of how
much space in between these two offsets is actually taken up by
cached buffers. This fix changes that so that vdev space usage
stats on L2ARC devices accurately track the volume of buffers
stored on them, allowing users to see the exact L2ARC usage in
"zpool iostat -v".
References:
https://www.illumos.org/issues/4897
https://github.com/illumos/illumos-gate/commit/3038a2b
Ported by: Tim Chase <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #2555
Diffstat (limited to 'module/zfs/zfs_ctldir.c')
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