Disable ZFS thin-provisioning (sparse)

Sir_Max

New Member
Apr 16, 2018
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Hi everybody,

I am facing following problem:

currently I have "sparse" enabled in "/etc/pve/storage.cfg", which means thin-provisioning:

Code:
zfspool: local-zfs
        pool rpool/data
        content images,rootdir
        sparse 1

Now as far as I understand, this leads to not showing the reserved space for all virtual machines on the proxmox-management gui. So now I would not really know how much real disk-space is left to use for new virtual machines.

Example:
- 10TB diskspace on vm-host
- 5 x 2TB disks for virtual machines
- each machine is using 1TB
-> this equals 5TB real usage

At this point the webinterface would only show 5TB as used. So I would have the possiblity to give the virtual machines more disk space as there actually is available, as long as they did not use up every byte..

So is there a chance to "fix" this with disabling thin-provisioning? If yes, how? If no, is there maybe another solution?

Thank you very much