Comment 1 for bug 1966110

Reviewed: https://review.opendev.org/c/starlingx/config/+/831980
Committed: https://opendev.org/starlingx/config/commit/bedfb054faa3213351018c806a0a844d74ca4a3e
Submitter: "Zuul (22348)"
Branch: master

commit bedfb054faa3213351018c806a0a844d74ca4a3e
Author: Takamasa Takenaka <email address hidden>
Date: Fri Mar 4 13:51:27 2022 -0300

    Add retrying mount manually on /opt/platform

    There are two issues:
    - When controller-1 is locked/unlocked with controller-0 removed,
      controller-1 does not start properly. No drbd related disks
      are mounted. The message "mount: can't find /opt/platform in
      /etc/fstab" in /var/log/daemon.log
    - The error message "Device is held open by someone" in
      /var/log/damon.log
    The first issue occurred because there is no entry for platform
    n /opt/fstab as the message.
    The second issue occurred because "drbdadm primary drbd-platform"
    and "drbdadm secondary drbd-platform" are called one another.
    (This happens when mount in platform fails)

    This fix is:
    - Add and call mount with parameter when mount commands fails
    - Add sleep before "drbdadm secondary drbd-platform" is called

    Closes-bug: 1966110

    TEST PLAN:
    PASS: Fresh install SX and DX
    PASS: Path test for patch in SX
          1. Lock/Unlock controller-0
          2. Confirm controller-0 started properly and no error
             Addtional message is not shown in /var/log/daemon.log
    PASS: Path test for patch in DX
          1. Delete controller-0
          2. Reboot controller-1
          3. Confirm controller-1 started properly and no error
             message is observed in /var/log/daemon.log

    Signed-off-by: Takamasa Takenaka <email address hidden>
    Change-Id: I238b9c13c9b66ebbc33207f7dba70cd0a45eca93