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September 30, 2025 at 6:55 PM, "Marco Gaiarin"
<[g...@lilliput.linux.it](mailto:g...@lilliput.linux.it?to=%22Marco%20Gaiarin%22%20%3Cgaio%40lilliput.linux.it%3E)\>
wrote:
> Mandi! Matthieu Dreistadt via pve-user
> In chel di\` si favelave...
>
>
> > you can check "z
> Uh, wait... effectively we forgot to enable 'discard' on volumes, and we have
> enabled afterward (but rebooted the VM).
Still here. I've rechecked every passage and i summarize here:
1) ZFS storage had 'Thin provision' enabled from the start
2) we create a bounch of volumes for the VM, and,
--- Begin Message ---
On 24 September 2025 18:29:26 CEST, Marco Gaiarin
wrote:
>Mandi! Marco Gaiarin
> In chel di` si favelave...
>
>> Uh, wait... effectively we forgot to enable 'discard' on volumes, and we have
>> enabled afterward (but rebooted the VM).
>> I'll check refreservation property a
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Hi Marco,
you can check "zfs list -o space", which will give you a more detailed
view of what is using the space:
root@xxx:~# zfs list -o space
NAME AVAIL USED USEDSNAP USEDDS
USEDREFRESERV USEDCHILD
rpool 507G 354
Mandi! Marco Gaiarin
In chel di` si favelave...
> I think is XFS. I'll check.
I confirm, FS is XFS.
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Mandi! Gilou
In chel di` si favelave...
> What's the underlying storage? local zfs?
> Does it have thin provisioning / sparse enabled?
Yes, storage is ZFS, and 'Thin provision' is enabled.
> Also inside the VM, make sure that all the stack is discard aware, LVM,
> filesystem and all..
VM is
Mandi! Gilou
In chel di` si favelave...
> You can check that forum post:
> https://forum.proxmox.com/threads/zfs-enable-thin-provisioning.41549/
Uh, wait... effectively we forgot to enable 'discard' on volumes, and we have
enabled afterward (but rebooted the VM).
I'll check refreservation pro
Mandi! Alwin Antreich via pve-user
In chel di` si favelave...
> Are you running EXT4 on the guest?
> https://forum.proxmox.com/threads/help-with-trim-on-virtio-scsi-single.123819/post-542552
I think is XFS. I'll check.
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--- Begin Message ---
Hi Marco,
September 17, 2025 at 3:27 PM, "Marco Gaiarin" mailto:g...@lilliput.linux.it?to=%22Marco%20Gaiarin%22%20%3Cgaio%40lilliput.linux.it%3E
> wrote:
>
> We have an PVE8 server, on clustered, with 66TB of disk storage and (for
> now) a single VM; volumes have all 'di
Le 17/09/2025 à 15:27, Marco Gaiarin a écrit :
We have an PVE8 server, on clustered, with 66TB of disk storage and (for
now) a single VM; volumes have all 'discard' option enabled, and the VM
(RH8) support and have trim enabled.
We moved around some data between volumes, and now we have 20TB us
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