Provision Docker Storage on a Dedicated Block Device: Difference between revisions

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Create one partition that spans the entire device. Either [[fdisk]] or [[sfdisk]] can be used.
Create one partition that spans the entire device. Either [[fdisk]] or [[sfdisk]] can be used.


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{{Internal|Fdisk#Create_a_Partition_that_Spans_the_Entire_Device|Creating a Partition that Spans the Entire Device with fdisk}}
 
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Revision as of 02:48, 23 May 2017

Internal

Overview

Procedure

Provision an unformatted block device. For this example, it will be referred to as /dev/sdb.

Create the Partition

Create one partition that spans the entire device. Either fdisk or sfdisk can be used.

Creating a Partition that Spans the Entire Device with fdisk


Verify your configuration. You should have a dm.thinpooldev value in the /etc/sysconfig/docker-storage file and a docker-pool logical volume: 

# cat /etc/sysconfig/docker-storage
DOCKER_STORAGE_OPTIONS=--storage-opt dm.fs=xfs --storage-opt
dm.thinpooldev=/dev/mapper/docker--vg-docker--pool

# lvs
  LV          VG   Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  docker-pool rhel twi-a-t---  9.29g             0.00   0.12

Before using Docker or OpenShift Container Platform, verify that the docker-pool logical volume is large enough to meet your needs. The docker-pool volume should be 60% of the available volume group and will grow to fill the volume group via LVM monitoring.

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