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I'm trying to setup an openshift cluster on linode. I have set aside some disk space (via linode admin dashboard) for docker to use for storage. Unfortunately, I can't get it to be recognised as a valid block device.

My one server has the following setup:

# df
/dev/sda       ext4      20131844 2467892  16623616  13% /
/dev/sdb       ext4      30799868   44992  30424248   1% /mnt/sdb-mnt

As per RedHat guidelines, I have the following configuration:

# vim /etc/sysconfig/docker-storage-setup
DEVS=/dev/vdb
VG=docker-vg

I am getting the following error:

# docker-storage-setup
INFO: Volume group backing root filesystem could not be determined
ERROR: /dev//dev/vdb is not a valid block device.

My best guess is that I must perform some step that was skipped when provisioning the storage.

Nicholas Kolatsis
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1 Answers1

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It turns out that I typo'd the /etc/sysconfig/docker-storage-setup file.

The correct block device path was /dev/sdb and not /dev/vdb.

Another problem visible in the above is that the partition is ext4 formatted. The following fixed that if it helps anyone.

umount /dev/sdb
wipefs -a /dev/sdb
docker-storage-setup
Nicholas Kolatsis
  • 1