NFS Mounting options

[Eric Renfro]

Hello,

I'm trying to get proxmox to actually mount my NFS shares the way I'd prefer them to with the proper tuning options to better utilize jumbo frames and a little higher resiliency to network issues to the storage, especially for the case of backend replication failover to the backup share.

The options I have in my /etc/fstab in hopes it would use it are:
san1:/tank/vmdisk /mnt/pve/san1 nfs4 defaults,timeo=20,retrans=5,rsize=8192,wsize=8192,intr,vers=4,proto=tcp,_netdev 0 0

But when proxmox itself mounts it, all I get is:
san1:/tank/vmdisk on /mnt/pve/san1 type nfs (rw,vers=3,addr=172.17.6.0)

Is there any way to change this?

Eric

 

[Eric Renfro]

I've found the problem. It seems to be /etc/pve/storage.cfg as to where you can set the mount-specific options for each storage volume. When I did this, I noticed:

nfs: san1
path /mnt/pve/san1
server san1
export /tank/vmdisk
options vers=3
content images,iso,vztmpl

I changed this to:

nfs: san1
path /mnt/pve/san1
server san1
export /tank/vmdisk
options timeo=20,retrans=5,rsize=8192,wsize=8192,intr,vers=4,proto=tcp
content images,iso,vztmpl

The problem I noticed was in the sub function for parsing if a mount was active or not:

sub nfs_is_mounted {
my ($server, $export, $mountpoint, $mountdata) = @_;


my $source = "$server:$export";


$mountdata = read_proc_mounts() if !$mountdata;


if ($mountdata =~ m/^$source\s$mountpoint\snfs/m) {
return $mountpoint;
}


return undef;
}

Comparing from data relavant to the mounts as:
nas3:/c/proxmox /mnt/pve/nas3 nfs rw,relatime,vers=3,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.17.6.3,mountvers=3,mountport=3075,mountproto=udp,local_lock=none,addr=172.17.6.3 0 0
nas2:/mnt/vmdisk /mnt/pve/nas2 nfs rw,relatime,vers=3,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.17.6.2,mountvers=3,mountport=58327,mountproto=udp,local_lock=none,addr=172.17.6.2 0 0
rpc_pipefs /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0
san1:/tank/vmdisk/ /mnt/pve/san1 nfs4 rw,relatime,vers=4,rsize=8192,wsize=8192,namlen=255,hard,proto=tcp,port=0,timeo=20,retrans=5,sec=sys,clientaddr=172.17.5.4,minorversion=0,local_lock=none,addr=172.17.6.0 0 0




You'll notice, all the other mounts, which are mounted automatically by default settings in Proxmox, the $path from this is /c/proxmox, /mnt/vmdisk, and for the NFS4 one specifically, /tank/vmdisk/ <-- Extra ending / for some reason.


Eric

 

[Eric Renfro]

The fix for this is:

if ($mountdata =~ m/^$source\/?\s$mountpoint\snfs/m) {

Eric

 

[dietmar]

Thanks - will include that fix in the next release.

 

[jva1601]

The fix for this is:



Eric

Hi,

Could you point where this file is so I may add the added NFS options too? Thank you!

 

[dietmar]

Could you point where this file is so I may add the added NFS options too? Thank you!

https://git.proxmox.com/?p=pve-storage.git;a=commitdiff;h=95e8e21cc51b9b7c2e2ad614f369b90fa720d132