[PVE-User] Again trouble, but this time with ext4/trim...
gaio at sv.lnf.it
Mon Jul 29 16:46:19 CEST 2019
Mandi! Fabian Grünbichler
In chel di` si favelave...
> are you sure this storage box supports fstrim at all? thin provisioning
> and trim/discard often go together, but they don't have to..
Whai i can say is:
1) In the past, i've done 'direct iSCSI assignment' to some VM, eg the
VM mount the iSCSI volume, and i can trim them flawlessy.
2) in autumn, i've created a new set ov VMs, where i've abandoned
direct iSCSI mount and i use PVE volumes instead. Clearly, i've done
some test for trim/discard, verifying that space get correctly
After some weeks, i've suffered ext4 corruption as now.
3) in december i've upgraded the cluster to PVE 5; filesystem
4) some weeks ago i was forced ot reboot the cluster (to change an
UPS), and FS corruption reappeared.
For now, i've removed the 'discard=on' options from volumes that have ext4
The crazy things is that volumes formatted in XFS, residing on the
same SAN, seems does not suffer at all of FS corruption.
If i can do some test, please, say me.
> quick googling only showed some vmware specific integration to 'reclaim
> no longer used space of thin provisioned volumes', but no explicit
> mention of discard support.
Ahem, but trim/discard are not the same things?
dott. Marco Gaiarin GNUPG Key ID: 240A3D66
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