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Merge pull request #7897 from adamancini/patch-11 

Update device-mapper-driver.md
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L-Hudson 2018-12-20 08:35:10 -05:00 committed by GitHub
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@ -807,6 +807,14 @@ storage driver.
by thin provisioning and copy-on-write. Volumes have other benefits, such as by thin provisioning and copy-on-write. Volumes have other benefits, such as
allowing you to share data among containers and persisting even when no allowing you to share data among containers and persisting even when no
running container is using them. running container is using them.
- **Note**: when using `devicemapper` and the `json-file` log driver, the log
files generated by a container are still stored in Docker's dataroot directory,
by default `/var/lib/docker`. If your containers generate lots of log messages,
this may lead to increased disk usage or the inability to manage your system due
to a full disk. You can configure a
[log driver](/config/containers/logging/configure.md) to store your container
logs externally.
## Related Information ## Related Information