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man: lvcreate doc passthrough

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Add few more words about passthough mode.
This commit is contained in:
Zdenek Kabelac 2016-04-25 13:38:24 +02:00
parent d90d99b23d
commit 07d92322c1
1 changed files with 4 additions and 1 deletions
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man/lvcreate.8.in
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@ -219,7 +219,10 @@ If \fBwritethough\fP is specified, a write is considered complete only
when it has been stored in the cache pool LV and on the origin LV.
While \fBwritethrough\fP may be slower for writes, it is more
resilient if something should happen to a device associated with the
cache pool LV.
cache pool LV. With \fBpassthrough\fP mode, all reads are served
from origin LV (all reads miss the cache) and all writes are
forwarded to the origin LV; additionally, write hits cause cache
block invalidates. See \fBlvmcache(7)\fP for more details.
.
.HP
.BR \-\-cachepolicy