[JIRA] (OVIRT-937) Fix mock_cleanup.sh umount failures

[Barak Korren (oVirt JIRA)]

     [ https://ovirt-jira.atlassian.net/browse/OVIRT-937?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Barak Korren updated OVIRT-937:
-------------------------------
    Epic Link: OVIRT-400

> Fix mock_cleanup.sh umount failures
> -----------------------------------
>
>                 Key: OVIRT-937
>                 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-937
>             Project: oVirt - virtualization made easy
>          Issue Type: Bug
>          Components: Jenkins
>            Reporter: Barak Korren
>            Assignee: infra
>
> Cleanup script can log faux failures when trying to umount leftover mock file systems.
> This happened here:
> http://jenkins.ovirt.org/job/vdsm_master_check-patch-fc24-x86_64/6291/consoleFull
> Relevant log lines:
> {code}
> 18:36:55 + echo 'Found mounted dirs inside the chroot /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661.' 'Trying to umount.'
> 18:36:55 Found mounted dirs inside the chroot /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661. Trying to umount.
> 18:36:55 + for mount in '"${mounts[@]}"'
> 18:36:55 + sudo umount --lazy /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/proc
> 18:36:55 + for mount in '"${mounts[@]}"'
> 18:36:55 + sudo umount --lazy /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/sys
> 18:36:55 + for mount in '"${mounts[@]}"'
> 18:36:55 + sudo umount --lazy /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/dev/shm
> 18:36:55 + for mount in '"${mounts[@]}"'
> 18:36:55 + sudo umount --lazy /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/dev/pts
> 18:36:55 + for mount in '"${mounts[@]}"'
> 18:36:55 + sudo umount --lazy /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/var/cache/yum
> 18:36:55 + for mount in '"${mounts[@]}"'
> 18:36:55 + sudo umount --lazy /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/home/jenkins/workspace/vdsm_master_check-merged-el7-x86_64/vdsm
> 18:36:55 + for mount in '"${mounts[@]}"'
> 18:36:55 + sudo umount --lazy /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/run/libvirt
> 18:36:55 + for mount in '"${mounts[@]}"'
> 18:36:55 + sudo umount --lazy /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/var/lib/lago
> 18:36:55 + for mount in '"${mounts[@]}"'
> 18:36:55 + sudo umount --lazy /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/proc/filesystems
> 18:36:55 umount: /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/proc/filesystems: mountpoint not found
> 18:36:55 + echo 'ERROR:  Failed to umount /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/proc/filesystems.'
> 18:36:55 ERROR:  Failed to umount /var/lib/mock/epel-7-x86_64-95d9ead9d725499a15a9021ba2fe9831-54661/root/proc/filesystems.
> 18:36:55 + failed=true
> 18:36:55 + this_chroot_failed=true
> {code}
> We should make the umount loop not fail if the FS its trying to un-mount is not mounted anymore.



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