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Date: Thu, 29 Dec 2022 11:48:16 +0100
From: =?UTF-8?Q?=C3=93scar_de_Arriba?= <oscar@dearriba.es>
To: "Martin Holub" <martin@holub.co.at>, pve-user@lists.proxmox.com
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Subject: Re: [PVE-User] Thin LVM showing more used space than expected
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Any idea why it still has 96.23% of space used but the VMs are using way=
 less? I'm starting to worry a lot about it (I don't kant tobe really fu=
ll) and my current only hope is backup + reinstall PVE.

Thanks,
Oscar

On Thu, Dec 29, 2022, at 11:01, Martin Holub wrote:
>=20
>=20
> Am 28.12.2022 um 12:44 schrieb =C3=93scar de Arriba:
>> Hi Martin,
>>=20
>> > Did you try to run a fstrim on the VMs to regain the allocated spac=
e? At least on linux something like "fstrim -av" should do the trick.
>>=20
>> I did it now and it freed ~55GiB of a running isntance (the one with =
128 GiB allocated). However that should only free blocks of the LV used =
to store that VM disk, right? And the issue itself is that the sum of ma=
ximum allocations of those disks is much lower than the space occupied.
>>=20
>> I also have the feeling that those blocks remain used by a no longer =
existant LVs, but I don't know how to fix it.
>>=20
>> Should I also enable trim/execute trim on Proxmox itself?
>>=20
>> Oscar
>>=20
>=20
>=20
>=20
> Hi,
>=20
> TRIM only works on a filesystem level, so you can't trim a VG or simil=
ar. On the pve host i doubt it will help, but it wouldn't harm either.=20
>=20
> hth
> Martin
>=20