Hello,
we are moving to Proxmox now and I would need some help from you.
In the past, I have always used NFSv3, because in our KVM environment, we had issues with NFSv4.1 and head fail-overs -> VMs got paused I think also VMware had such issues. Problem I think is that NFSv4.1 is stateful and on a head fail-over, this state got lost.
I'm on 9.14.1.
As NFSv3 is quite old and Proxmox is using a newer kernel, I wanted to ask, if someone of you have experience with Proxmox and NFS volumes from NetApp.
Do you use special mount options? Is NFSv4.2 working fine with head fail-overs -> VMs are not pausing or don't even notice it? We have 25 Gbit network interfaces as a bond to our NetApp, are here any special options to configure? Are you using on VM disks "cache=none" or something different?
Unfortunately, Proxmox has not much experience with NetApp either, so that I hope someone from you can help me here to create a good, fast and stable setup.
This is how a mount point looks like with default options from Proxmox and NFSv3: nfs-root-01:/pve_DC_nfs_root_01 /mnt/pve/nfs-v3-root-01 nfs rw,relatime,vers=3,rsize=65536,wsize=65536,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.16.4.3,mountvers=3,mountport=635,mountproto=udp,local_lock=none,addr=172.16.4.3 0 0
This is from our old virtualization oVirt: nfs-root-01:/oVirt_DC_nfs_root_01 /rhev/data-center/mnt/nfs-root-01:_oVirt__DC__nfs__root__01 nfs rw,relatime,vers=3,rsize=65536,wsize=65536,namlen=255,soft,nolock,nosharecache,proto=tcp,timeo=600,retrans=6,sec=sys,mountaddr=172.16.4.3,mountvers=3,mountport=635,mountproto=udp,local_lock=all,addr=172.16.4.3 0 0
* oVirt was using soft, but this I think, I shouldn't use on Proxmox and instead use hard. oVirt had a special watchdog for this.
Best regards, Florian