diff options
| author | George Wilson <[email protected]> | 2014-07-19 12:19:24 -0800 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2014-08-18 08:40:49 -0700 |
| commit | f3a7f6610f2df0217ba3b99099019417a954b673 (patch) | |
| tree | 720f77d117032a585761dd5bb80e5a5694915111 /include/sys/fs | |
| parent | f67d709080f3d4a247191f0d25cbedc5da103f78 (diff) | |
Illumos 4976-4984 - metaslab improvements
4976 zfs should only avoid writing to a failing non-redundant top-level vdev
4978 ztest fails in get_metaslab_refcount()
4979 extend free space histogram to device and pool
4980 metaslabs should have a fragmentation metric
4981 remove fragmented ops vector from block allocator
4982 space_map object should proactively upgrade when feature is enabled
4983 need to collect metaslab information via mdb
4984 device selection should use fragmentation metric
Reviewed by: Matthew Ahrens <[email protected]>
Reviewed by: Adam Leventhal <[email protected]>
Reviewed by: Christopher Siden <[email protected]>
Approved by: Garrett D'Amore <[email protected]>
References:
https://www.illumos.org/issues/4976
https://www.illumos.org/issues/4978
https://www.illumos.org/issues/4979
https://www.illumos.org/issues/4980
https://www.illumos.org/issues/4981
https://www.illumos.org/issues/4982
https://www.illumos.org/issues/4983
https://www.illumos.org/issues/4984
https://github.com/illumos/illumos-gate/commit/2e4c998
Notes:
The "zdb -M" option has been re-tasked to display the new metaslab
fragmentation metric and the new "zdb -I" option is used to control
the maximum number of in-flight I/Os.
The new fragmentation metric is derived from the space map histogram
which has been rolled up to the vdev and pool level and is presented
to the user via "zpool list".
Add a number of module parameters related to the new metaslab weighting
logic.
Ported by: Tim Chase <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #2595
Diffstat (limited to 'include/sys/fs')
| -rw-r--r-- | include/sys/fs/zfs.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/sys/fs/zfs.h b/include/sys/fs/zfs.h index d54cd5679..24ad768c0 100644 --- a/include/sys/fs/zfs.h +++ b/include/sys/fs/zfs.h @@ -194,6 +194,7 @@ typedef enum { ZPOOL_PROP_COMMENT, ZPOOL_PROP_EXPANDSZ, ZPOOL_PROP_FREEING, + ZPOOL_PROP_FRAGMENTATION, ZPOOL_PROP_LEAKED, ZPOOL_NUM_PROPS } zpool_prop_t; @@ -600,6 +601,13 @@ typedef struct zpool_rewind_policy { #define SPA_MINDEVSIZE (64ULL << 20) /* + * Set if the fragmentation has not yet been calculated. This can happen + * because the space maps have not been upgraded or the histogram feature + * is not enabled. + */ +#define ZFS_FRAG_INVALID UINT64_MAX + +/* * The location of the pool configuration repository, shared between kernel and * userland. */ @@ -747,6 +755,7 @@ typedef struct vdev_stat { uint64_t vs_self_healed; /* self-healed bytes */ uint64_t vs_scan_removing; /* removing? */ uint64_t vs_scan_processed; /* scan processed bytes */ + uint64_t vs_fragmentation; /* device fragmentation */ } vdev_stat_t; /* |