How to identify the config-drive partition of the controller node

Solution In Progress - Updated -


  • Red Hat OpenStack Platform 16.1
  • Red Hat OpenStack Platform 16.2


  • When using ReaR to back up the config-drive partition of the Controller node, how is the config-drive partition identified?


  • The config-drive partition has a LABEL of config-2. blkid command can be used to identify the partition with the config-2 LABEL.
    The following is an example for the case where config-drive is /dev/sda1
[heat-admin@overcloud-controller-0 ~]$ blkid -t LABEL="config-2" -odevice

Root Cause

Diagnostic Steps

  • It is able to check the config-drive partition by mounting the partition.
[root@overcloud-controller-0 ~]# blkid -t LABEL="config-2" -odevice
[root@overcloud-controller-0 ~]# mount /dev/sda1 /mnt
mount: /mnt: WARNING: device write-protected, mounted read-only.
[root@overcloud-controller-0 ~]# 
[root@overcloud-controller-0 ~]# ls -l /mnt
total 4
dr-xr-xr-x.  4 root root 2048 Mar  5 14:11 ec2
dr-xr-xr-x. 11 root root 2048 Mar  5 14:11 openstack

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