[JIRA] (OVIRT-636) Add disks in memory for lago slaves

[Evgheni Dereveanchin (oVirt JIRA)]

    [ https://ovirt-jira.atlassian.net/browse/OVIRT-636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18805#comment-18805 ] 

Evgheni Dereveanchin commented on OVIRT-636:
--------------------------------------------

We can base this on unit files created by Anton to partition and mount local disks on slave VMs:
https://gerrit.ovirt.org/#/c/60036/

[~bkorren at redhat.com] - what happens if /var/lib/lago is empty after host reboot? Will this just empty the cache or it may negatively affect the slave? I don't think bare metal slaves will reboot that often, so wondering if we actually need to sync this directory to disk.

> Add disks in memory for lago slaves 
> ------------------------------------
>
>                 Key: OVIRT-636
>                 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-636
>             Project: oVirt - virtualization made easy
>          Issue Type: Bug
>            Reporter: eyal edri [Administrator]
>            Assignee: infra
>
> We need to try moving the Lago slaves in CI to work with memory instead of local disks,
> It might speed up the tests significantly.
> We have 2 choices:
> 1. add code to the job and mount the dir on /dev/shm/
> 2. create zram drive and mount the following dirs on it:
> # /var/lib/mock
> # /var/lib/lago
> # /home/jenkins
> Each host should have enough memory to run current tests on them,
> however we'll need to make sure to clean that drive after each run.
> Lets try it on one of the slaves to see what is the best solution before implementing for all slaves.



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