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Added clarification for deferred deletion (#2266) 

Signed-off-by: Matt Bentley <matt.bentley@docker.com>
This commit is contained in:
Matt Bentley 2017-03-16 23:05:53 -04:00 committed by Misty Stanley-Jones
parent 66996126eb
commit 9c74818cf5
1 changed files with 4 additions and 3 deletions
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7
engine/userguide/storagedriver/device-mapper-driver.md
View File

@ -325,6 +325,10 @@ assumes that the Docker daemon is in the `stopped` state.
There are two ways to do this. You can set options on the command line if
you start the daemon there:
> **Note**: The deferred deletion option, `dm.use_deferred_deletion=true`, is not yet supported
> on CentOS, RHEL, or Ubuntu 14.04 when using the default kernel. Support was added in the
> upstream kernel version 3.18.
```none
--storage-driver=devicemapper \
--storage-opt=dm.thinpooldev=/dev/mapper/docker-thinpool \
@ -347,9 +351,6 @@ assumes that the Docker daemon is in the `stopped` state.
}
```
> **Note**: Always set both `dm.use_deferred_removal=true` and `dm.use_deferred_deletion=true`
> to prevent unintentionally leaking mount points.
15. If using systemd and modifying the daemon configuration via unit or drop-in file, reload systemd to scan for changes.
```bash