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authorHeinz Mauelshagen <mauelshagen@redhat.com>2013-03-01 22:45:52 +0000
committerAlasdair G Kergon <agk@redhat.com>2013-03-01 22:45:52 +0000
commit8735a8134786fa4ef36dee65d7fa779b99ba5fe3 (patch)
tree0049cda7a855a2ba7d3e0c4628d983a8466fafbc /Documentation
parentf283635281132af7bc7b90af3c105b8c0f73b9c7 (diff)
downloadlinaro-lsk-8735a8134786fa4ef36dee65d7fa779b99ba5fe3.tar.gz
dm cache: add cleaner policy
A simple cache policy that writes back all data to the origin. This is used to decommission a dm cache by emptying it. Signed-off-by: Heinz Mauelshagen <mauelshagen@redhat.com> Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/device-mapper/cache-policies.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/device-mapper/cache-policies.txt b/Documentation/device-mapper/cache-policies.txt
index 731879f97b8..d7c440b444c 100644
--- a/Documentation/device-mapper/cache-policies.txt
+++ b/Documentation/device-mapper/cache-policies.txt
@@ -53,6 +53,11 @@ since spindles tend to have good bandwidth. The io_tracker counts
contiguous I/Os to try to spot when the io is in one of these sequential
modes.
+cleaner
+-------
+
+The cleaner writes back all dirty blocks in a cache to decommission it.
+
Examples
========