[PVE-User] Feature request : warning / error on migration if target storage doesn't have enough size

[Eneko Lacunza]

Hi Guillaume,

Something like you said could be helpful, but some storages have thin 
provisioning+deduplication and Proxmox may not be able to determine 
effective disk size; so I don't think a hard error would be possible 
always (it could prevent migrating VMs that have enough space in 
destination although not being evident...

Regards

El 13/1/26 a las 15:59, Guillaume VANDENHOVE escribió:
> Hello,
>
> When migrating a VM (or a container) from one node to another, I miscalculated the remaining empty space on my target node, and ended up with a completely full disk, which is obviously not something you want.
>
> Proxmox already issue warnings like "large storage, migrating may take a while", and it can also issue blocking errors, like "local CD attached to VM". Adding a check of [current VM size] vs [remaining space on target dataset] would be helpful, and a good way to avoid shooting yourself in the foot (which proxmox usually does pretty well). There could be a warning when the target dataset will be almost entirely filled (>97% usage), and an error when the target dataset isn't big enough to migrate the VM.
>
> I'm sorry if this is not the correct place to report this, but I didn't see any "feature request" subforum on the proxmox forum.
>
> Regards,
>
> Guillaume Vandenhove
>
>
>
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Eneko Lacunza
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