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| author | David Teigland <teigland@redhat.com> | 2017-05-11 10:52:59 -0500 |
|---|---|---|
| committer | David Teigland <teigland@redhat.com> | 2017-05-11 10:52:59 -0500 |
| commit | d49a20b7bdc9b741def219be897c5057db5e05ff (patch) | |
| tree | 138cbcb1222e7761ca08774cdc4d8a734fa19668 /man/lvmcache.7_main | |
| parent | 80900dcf76d2c91d8892e54913367bfed1012056 (diff) | |
| download | lvm2-d49a20b7bdc9b741def219be897c5057db5e05ff.tar.gz | |
man lvmcache: add info about metadata formats
Diffstat (limited to 'man/lvmcache.7_main')
| -rw-r--r-- | man/lvmcache.7_main | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/man/lvmcache.7_main b/man/lvmcache.7_main index e573b58e7..1f291859c 100644 --- a/man/lvmcache.7_main +++ b/man/lvmcache.7_main @@ -404,6 +404,24 @@ This is equivalent to: .B lvconvert --type cache --cachepool VG/CachePoolLV VG/OriginLV +.SS Cache metadata formats + +\& + +There are two disk formats for cache metadata. The metadata format can be +specified when a cache pool is created, and cannot be changed. +Format \fB2\fP has better performance; it is more compact, and stores +dirty bits in a separate btree, which improves the speed of shutting down +the cache. +With \fBauto\fP, lvm selects the best option provided by the current +dm-cache kernel target. + +.B lvconvert --type cache-pool --cachemetadataformat auto|1|2 +.RS +.B VG/CacheDataLV +.RE + + .SH SEE ALSO .BR lvm.conf (5), .BR lvchange (8), |