Snapshots unusable on CEPH

[Yenya (Jan "Yenya" Kasprzak)]

Bernhard,

thanks for your reply. I have upgraded to 5.2.1, and now I am able to do snapshots of non-persistent VM disks. Maybe I did something wrong last time, or maybe something got fixed between 5.2.0 and 5.2.1.

However, I don’t want to use POWEROFF at all - for CEPH, UNDEPLOYED is almost the same as POWEROFF, except that POWEROFF counts the VM RAM and CPU as used on the particular host on which the VM is deployed (even though it is not really used by the powered off VM). So I disabled POWEROFF in Sunstone in favor of UNDEPLOY, as discussed here:

RFE: Disable POWEROFF in favor of UNDEPLOY

Hello, if I understand it correctly, for clusters with a shared system datastore, there is almost no performance difference between shuting down a VM to the POWEROFF state and shutting it down to the UNDEPLOYED state. The only visible difference (for me) is that the POWEROFF VM is still assigned to the particular host, and its RAM is accounted to this host as occupied, even though it is not really used. Network leases are allocated for both types, and the handling of non-persistent images is al…

Also disk-saveas does not work for UNDEPLOYED VMs for some reason, as well as revert, or snapshot delete.

-Yenya