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| author | Keith M Wesolowski <wesolows@foobazco.org> | 2014-01-15 22:53:12 +0000 |
|---|---|---|
| committer | Keith M Wesolowski <wesolows@foobazco.org> | 2014-01-15 22:53:12 +0000 |
| commit | d1d51e78b243321127b2eb6a052c6ddea380abfb (patch) | |
| tree | b541cfe58f7c098a117f23666c59e51fd0eff8e8 | |
| parent | 7178bc7969808c1ce80e356dd02782803cfa1e65 (diff) | |
| download | illumos-joyent-d1d51e78b243321127b2eb6a052c6ddea380abfb.tar.gz | |
OS-2711 want absolute way to avoid condensing metaslabs
| -rw-r--r-- | usr/src/uts/common/fs/zfs/metaslab.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/usr/src/uts/common/fs/zfs/metaslab.c b/usr/src/uts/common/fs/zfs/metaslab.c index 7f8264e5b4..b078e3920e 100644 --- a/usr/src/uts/common/fs/zfs/metaslab.c +++ b/usr/src/uts/common/fs/zfs/metaslab.c @@ -62,6 +62,11 @@ uint64_t metaslab_gang_bang = SPA_MAXBLOCKSIZE + 1; /* force gang blocks */ int zfs_condense_pct = 200; /* + * Never condense any space map. This is for debugging/recovery only. + */ +int zfs_condense_never = 0; + +/* * This value defines the number of allowed allocation failures per vdev. * If a device reaches this threshold in a given txg then we consider skipping * allocations on that device. The value of zfs_mg_alloc_failures is computed @@ -1288,6 +1293,9 @@ metaslab_should_condense(metaslab_t *msp) ASSERT(MUTEX_HELD(&msp->ms_lock)); ASSERT(msp->ms_loaded); + if (zfs_condense_never != 0) + return (B_FALSE); + /* * Use the ms_size_tree range tree, which is ordered by size, to * obtain the largest segment in the free tree. If the tree is empty |