Roland Kammerer <[email protected]> writes: >> > Do I understand correctly that it means, on each server: >> > >> > 1 disk == 1 PV == 1 VG == 1 ThinPool == 1 storage-pool >> > >> > ? >> >> Ok, so I don't understand how to create and use this setup. Does someone >> have any hints? > > I'd say your assumption is correct. The "handle" to create actual > resources in LINSTOR then is the resource group/volume group (LINSTOR > rg/vg, not to confuse with LVM). And LINSTOR RGs can have multiple > LINSTOR storage pools. So you always use the same LINSTOR RG, it will > choose one of the SPs and as there is a 1:1 mapping down to 1 physical > disk your failure domain for that resource is that single disk.
Thanks a lot. So, to see if I understood correctly: 1. when a first VM disk is created, one storage-pool is chosen to store it 2. any VM running, the disk will be “cloned” on the same storage-pool when possible and fallback to “copy” if the storage-pool is full[1] 3. Saving the running VM disk to the long term storage is always in “copy” mode[2], so no storage shared between them Is that right? Because I'm wondering how things are working when one storage-pool (== one PV) is full. Regards. Footnotes: [1] https://github.com/OpenNebula/addon-linstor/blob/master/one/extender.py#L175-L182 [2] https://github.com/OpenNebula/addon-linstor/blob/master/tm/cpds#L48-L53 -- Daniel Dehennin Pôle Logiciels Libres du ministère de l’Éducation nationale Récupérer ma clef GPG: gpg --recv-keys 0x5A380850F562870C Empreinte: EEB2 C6C8 EDFE 8364 8B2B A263 5A38 0850 F562 870C
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