[pve-devel] [RFC 1/2 pve-storage] implement map_volume and unmap_volume

[Thomas Lamprecht]

On 9/21/18 2:37 PM, Thomas Lamprecht wrote:
> [...]
> 
> Single thing which was not working was the a full clone of a linked clone,
> i.e., convert a CT to a template, create a linked clone with said template
> as base (works) and then clone the linked clone (full clone), which seems
> to work first - but then errors out with:
> 
>> create full clone of mountpoint rootfs (commonPool:base-105-disk-0/vm-106-disk-0)
>> /dev/rbd5
>> mke2fs 1.43.4 (31-Jan-2017)
>> ...
>> Removing image: 100% complete...done.
>> TASK ERROR: clone failed: rbd error: rbd: error opening pool 'base-105-disk-0': (2) No such file or directory
> 
> (CT105 is the template, CT106 is the linked clone, 
> 
> Same test worked on an current KRBD enabled code path and LVM-Thin
> (just to ensure that this is something dooable in general), so there
> may be something off with passing volume/disk names.
> 

FYI, this works again if I use $name not $volname in your $krbd_feature_disable
call (with the FIXME question), as else we query the full volname, which in this
case is 'base-105-disk-0/vm-106-disk-0' (105 the template, 106 the linked clone)
but RBD does not knows about that one.