Sascha Lucas (sascha_lucas) writes:
>
> It might be considered to not allow de-/attach for DRBD on the first
> run, or even at all (same for file and plain?). Maybe the use case for
> de-/attach itself is somewhat special. Completing the disk design doc,
> would open the way for mixing disk types, again limited for the DRBD
> case, but not for externally mirrored.
Since nothing is known about the "migratability" of a given
external disk template, it is a bit all-or-nothing with DRBD, yes.
But, we would love to be able to have system disks on DRBD SSD storage,
and have the second/data disks on RBD (CEPH), so we'd be able to
migrate.
Maybe having external disk template provide some sort of flag/feature
"can_migrate" or similar ?
Cheers,
Phil
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