NFS and Snapshots corrupt my VMs disks

Jan 18, 2017
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iam using a NFS share from my synology (2 proxmox servers, 1 switch and synology NAS). Everything works fine, except snapshots. When i make a snapshot, the disks (vda1, etc into the vm) are corrupted and my vm doesnt start anymore. sometimes he gives an error like the screenshot , sometimes he gives no error after the snapshot, but the disks are damaged also!

What could i do to make this work?

because above i red about ZFS over ISCSI will not work with synology?
 

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I think i found the solution (maybe).
i installed always the vm's with vm virtio HD's (i thought this must be the right one).
But i red somewhere it must be SCSI at the disk option and from OPTIONS tab the VM SCSI CONTROLLER= virtIO SCSI

So i detached the virtual HD, and attached again with scsi. With linux it starts with no problems, with windows i get a blue screen :)

After testing (10 times made snapshots and reboots, till now no problems).
 
Hi, after I see your atached photos, you can see that are many I/O block errors. So if your storage is a remote NFS, then your problems are outside of proxmox(check your network devices, synology).
 
I didnt try without RAM check.

It has nothing to do with your problem, if your PMX hardware is OK(ram, network, local-storage). Start to check your remote NAS and the network path. I use NFS and containers, and I do snapshots on the NFS. The only difference is the fact that in my setup I use a local NFS share(my nfs is also om the same PMX server), and as local storge I have zfs and not lvm.