Update failed and made a new vm. Snapshot now works. Thanks for the tip. Had a nfs connection problem after that but that worked again after I ran an apt install nfs-common on the new vm.

Does that happen automatically? ... edit xvdd refers to the cdrom. Topic solved now. Thanks all.

Please refer to https://github.com/vatesfr/xen-orchestra/issues/4455 olivierlambert created this issue in vatesfr/xen-orchestra closed Migrate VDI from SR view #4455

After: mount 192.168.10.6:/mnt/raid/nfs /mnt/jan and i look with mount i get this: 192.168.10.6:/mnt/raid/nfs on /mnt/jan type nfs4 (rw,relatime,vers=4.1,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=10.211.55.19,local_lock=none,addr=192.168.10.6) So its working. After manual typing what XO tried: mount -t nfs 192.168.10.6:/mnt/raid/nfs/backup /mnt/jan -o vers=3 I get the same error: mount.nfs: access denied by server while mounting 192.168.10.6:/mnt/raid/nfs/backup So the “-o vers=3" option is the problem. Can i edit a file in XO to get rid of the “-o vers=3” option? SOLVED In XO i used the option -o vers=4 and this works.