diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2013-08-16 10:54:20 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2013-08-23 09:02:13 -0400 |
| commit | 66bb2644cac8b5cc1cc477959aa37dcfe6317a23 (patch) | |
| tree | 614b8fc5e6a5a62d932b3b6627d85a493e0badf7 | |
| parent | 670368a8ddc5df56437444c33b8089afc547c30a (diff) | |
dm cache: document metadata device is exclussive to a cache
A cache's metadata device may not be shared by multiple cache devices.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
| -rw-r--r-- | Documentation/device-mapper/cache.txt | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/device-mapper/cache.txt b/Documentation/device-mapper/cache.txt index e8cdf7241b66..af99c458c841 100644 --- a/Documentation/device-mapper/cache.txt +++ b/Documentation/device-mapper/cache.txt | |||
| @@ -50,7 +50,8 @@ other parameters detailed later): | |||
| 50 | which are dirty, and extra hints for use by the policy object. | 50 | which are dirty, and extra hints for use by the policy object. |
| 51 | This information could be put on the cache device, but having it | 51 | This information could be put on the cache device, but having it |
| 52 | separate allows the volume manager to configure it differently, | 52 | separate allows the volume manager to configure it differently, |
| 53 | e.g. as a mirror for extra robustness. | 53 | e.g. as a mirror for extra robustness. This metadata device may only |
| 54 | be used by a single cache device. | ||
| 54 | 55 | ||
| 55 | Fixed block size | 56 | Fixed block size |
| 56 | ---------------- | 57 | ---------------- |