Il 2022-11-15 22:56 Zdenek Kabelac ha scritto:
You could try 'vg' on top of another 'vg' - however I'd not recommend to use it this way (and it's unssuported (&unsupportable) by lvm2 in general)
Hi Zdenek, yeah, I would strongly avoid that outside lab testing.
IMHO I'd not recommend to combine 2 provisioning technologies - it's already hard to resolve 'out-of-space' troubles with just one technology...
The issue is that fast snapshots are only provided by dm-thin, meaning that lvmthin is almost mandatory for implementing a rolling/continuous snapshot scheme. And, on a more basic level, if we can not stack LVM on top of a VDO LV (in a supported manner), how can we take a snapshot of user data residing on that specific volume?
This seems a clear regression vs a separate VDO device. Am I missing something?
Caching should be already support - on VDO LV as well as on VDOPOOL LV (both work somewhat differently).
Good, thanks for confirming. I will do some tests... Regards. -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.danti@xxxxxxxxxx - info@xxxxxxxxxx GPG public key ID: FF5F32A8 _______________________________________________ linux-lvm mailing list linux-lvm@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
