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@spirit: It does not work out of box for Windows guests. You need to have virtio-scsi AND '-M pc' flag added. @dietmar: I'm sorry for the confusion, I made a typo. I meant to write: "This is caused by missing -M pc trim flag" So the flag that's to be added is '-M pc'

Thank you, dietmar and spirit. With latest packages from pve-no-subscription and virtio-scsi it is working as expected with Linux VMs. However I discovered that trim is not working with Windows VMs. This is caused by missing -M pc,trim flag, see...

I tried discard=on but thats not working :-( pve:/nodes/test/qemu/100> set config -virtio0 ceph:vm-100-disk-1,discard=on 400 Parameter verification failed. virtio0: invalid format - unable to parse drive options pveversion -v proxmox-ve-2.6.32: 3.1-114 (running kernel: 2.6.32-26-pve)...

Proxmox does support Ceph block devies (RBD) but I am not sure if there is support for trim discard yet? I could find a discussion on the pve-devel mailing list from 2012: http://pve.proxmox.com/pipermail/pve-devel/2012-November/004419.html At that time the feature was experimental so there was...

Hi, I just found out about a strange bevaviour in Proxmox VE 2.2. When restoring a VM with qmrestore the disk of the restored VM is always 4M larger than the original disk. Is this intended? Further more the disk options (e.g. writeback) und disk size are missing in the config of the restored...