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man lvmcache: add writecache cleaner info

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David Teigland 2020-12-02 15:29:21 -06:00
parent a2affffed5
commit 9b3458d5a9
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10
man/lvmcache.7_main
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@ -303,6 +303,16 @@ afterwards. Some underlying devices perform better with fua, some with
nofua. Testing is necessary to determine which.
Applicable only to persistent memory.
.IP \[bu] 2
cleaner = 0|1
Setting cleaner=1 enables the writecache cleaner mode in which data is
gradually flushed from the cache. If this is done prior to detaching the
writecache, then the splitcache command will have little or no flushing to
perform. If not done beforehand, the splitcache command enables the
cleaner mode and waits for flushing to complete before detaching the
writecache. Adding cleaner=0 to the splitcache command will skip the
cleaner mode, and any required flushing is performed in device suspend.
.SS dm-cache with separate data and metadata LVs