Command:

system host-fs-modify controller-0 docker=60

As we run this command, we get kernel alert logs in /var/log/kern.log/

2020-12-16T13:23:40.467 controller-0 kernel: alert [  921.174512] XFS (dm-5): metadata I/O error in "xfs_trans_read_buf_map" at daddr 0x77fc002 len 1 error 74
2020-12-16T13:23:41.715 controller-0 kernel: alert [  922.488879] XFS (dm-5): Metadata CRC error detected at xfs_agi_read_verify+0xd0/0xf0 [xfs], xfs_agi block 0x77fc002
2020-12-16T13:23:41.715 controller-0 kernel: alert [  922.498188] XFS (dm-5): Unmount and run xfs_repair
2020-12-16T13:23:41.715 controller-0 kernel: alert [  922.507214] XFS (dm-5): First 128 bytes of corrupted metadata buffer:
2020-12-16T13:23:41.809 controller-0 kernel: alert [  922.516545] 00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
2020-12-16T13:23:41.809 controller-0 kernel: alert [  922.516547] 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
2020-12-16T13:23:41.809 controller-0 kernel: alert [  922.516548] 00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
2020-12-16T13:23:41.809 controller-0 kernel: alert [  922.516549] 00000030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
2020-12-16T13:23:41.809 controller-0 kernel: alert [  922.516551] 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
2020-12-16T13:23:41.809 controller-0 kernel: alert [  922.516552] 00000050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
2020-12-16T13:23:41.809 controller-0 kernel: alert [  922.516553] 00000060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
2020-12-16T13:23:41.809 controller-0 kernel: alert [  922.516555] 00000070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................

In order to avoid this, we thought to initially set the size of docker-lv filesystem to 60 instead of increasing it from 30 to 60

For this, before bootstrap C0, we changed the following:

1. lv_size changed from 30 to 60 in file /usr/share/puppet/modules/platform/manifests/filesystem.pp

class platform::filesystem::docker::params::bootstrap (
  $lv_size = '60',
  $lv_name = 'docker-lv',
  $mountpoint = '/var/lib/docker',
  $devmapper = '/dev/mapper/cgts--vg-docker--lv',
  $fs_type = 'xfs',
  $fs_options = '-n ftype=1',
  $fs_use_all = false
) { }

2. Value of KUBERNETES_DOCKER_STOR_SIZE  at line 39 changed to 60 from 30 in file /usr/lib64/python2.7/site-packages/sysinv/common/constants.py

KUBERNETES_DOCKER_STOR_SIZE = 60

With these changes, after bootstrap of Controller-0, the size of docker-lv changes to 60 successfully.
The same is verified running the command "system host-fs-list controller-0"

But once Controller-1 bootstraps and comes up, we still get the size of docker-lv as 30.
Since Controller-0 PXE boots Controller-1, there must be a file at C0 which we could change so that Controller-1's docker-lv gets a size of 60G.

We are unable to find such a file and would require help in order to resolve this.