diff --git a/content/manuals/engine/storage/drivers/device-mapper-driver.md b/content/manuals/engine/storage/drivers/device-mapper-driver.md index d87da68950..3b0dfb29d3 100644 --- a/content/manuals/engine/storage/drivers/device-mapper-driver.md +++ b/content/manuals/engine/storage/drivers/device-mapper-driver.md @@ -145,10 +145,11 @@ After you have satisfied the [prerequisites](#prerequisites), follow the steps below to configure Docker to use the `devicemapper` storage driver in `direct-lvm` mode. -> [!WARNING]: Changing the storage driver makes any containers you have already - created inaccessible on the local system. Use `docker save` to save containers, - and push existing images to Docker Hub or a private repository, so you do not - need to recreate them later. +> [!WARNING] +> Changing the storage driver makes any containers you have already +> created inaccessible on the local system. Use `docker save` to save containers, +> and push existing images to Docker Hub or a private repository, so you do not +> need to recreate them later. #### Allow Docker to configure direct-lvm mode @@ -191,8 +192,9 @@ See all storage options for each storage driver in the Restart Docker for the changes to take effect. Docker invokes the commands to configure the block device for you. -> [!WARNING]: Changing these values after Docker has prepared the block device -> for you is not supported and causes an error. +> [!WARNING] +> Changing these values after Docker has prepared the block device for you is +> not supported and causes an error. You still need to [perform periodic maintenance tasks](#manage-devicemapper). @@ -227,8 +229,9 @@ assumes that the Docker daemon is in the `stopped` state. 4. Create a physical volume on your block device from step 1, using the `pvcreate` command. Substitute your device name for `/dev/xvdf`. - > [!WARNING]: The next few steps are destructive, so be sure that you have - > specified the correct device! + > [!WARNING] + > The next few steps are destructive, so be sure that you have specified + > the correct device. ```console $ sudo pvcreate /dev/xvdf @@ -651,7 +654,8 @@ $ sudo lvchange -ay docker/thinpool ## How the `devicemapper` storage driver works -> [!WARNING]: Do not directly manipulate any files or directories within +> [!WARNING] +> Do not directly manipulate any files or directories within > `/var/lib/docker/`. These files and directories are managed by Docker. Use the `lsblk` command to see the devices and their pools, from the operating @@ -835,7 +839,7 @@ storage driver. 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 + to a full disk. You can configure a [log driver](/manuals/engine/logging/configure.md) to store your container logs externally.