NFS option nconnect

[aghadjip]

Hey Folks,

I wanted to try out the nconnect option for NFS mounts and am having trouble adding this correctly.

nfs: XXXXX_nfs_image_store export /mnt/XXXXXX path /mnt/pve/XXXXXXXX server 10.0.XXXXX content iso,vztmpl,backup,images options vers=3,nconnect=16 prune-backups keep-last=2


I unmounted as root and cd'ed into the directory to mount it, however

10.0.XXXX:/mnt/XXXXXX /mnt/pve/XXXXX rw,relatime,vers=3,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=10.0.XXXXX,mountvers=3,mountport=841,mountproto=udp,local_lock=none,addr=10.0.XXXX 0 0

proc mounts doesnt show the new option. What am i missing?

 

[Hannes Laimer]

Hey,

could you post the output of pveversion -v? After unmounting make sure it is actually unmounted mount | grep nfs.

 

[aghadjip]

root@manifold:/mnt/pve# pveversion -v
proxmox-ve: 7.1-1 (running kernel: 5.13.19-1-pve)
pve-manager: 7.1-4 (running version: 7.1-4/ca457116)
pve-kernel-5.13: 7.1-4
pve-kernel-helper: 7.1-4
pve-kernel-5.4: 6.4-7
pve-kernel-5.13.19-1-pve: 5.13.19-2
pve-kernel-5.4.143-1-pve: 5.4.143-1
pve-kernel-5.4.73-1-pve: 5.4.73-1
ceph-fuse: 14.2.21-1
corosync: 3.1.5-pve2
criu: 3.15-1+pve-1
glusterfs-client: 9.2-1
ifupdown: residual config
ifupdown2: 3.1.0-1+pmx3
ksm-control-daemon: 1.4-1
libjs-extjs: 7.0.0-1
libknet1: 1.22-pve2
libproxmox-acme-perl: 1.4.0
libproxmox-backup-qemu0: 1.2.0-1
libpve-access-control: 7.1-1
libpve-apiclient-perl: 3.2-1
libpve-common-perl: 7.0-14
libpve-guest-common-perl: 4.0-3
libpve-http-server-perl: 4.0-3
libpve-storage-perl: 7.0-15
libqb0: 1.0.5-1
libspice-server1: 0.14.3-2.1
lvm2: 2.03.11-2.1
lxc-pve: 4.0.9-4
lxcfs: 4.0.8-pve2
novnc-pve: 1.2.0-3
proxmox-backup-client: 2.0.14-1
proxmox-backup-file-restore: 2.0.14-1
proxmox-mini-journalreader: 1.2-1
proxmox-widget-toolkit: 3.4-2
pve-cluster: 7.1-2
pve-container: 4.1-2
pve-docs: 7.1-2
pve-edk2-firmware: 3.20210831-2
pve-firewall: 4.2-5
pve-firmware: 3.3-3
pve-ha-manager: 3.3-1
pve-i18n: 2.6-1
pve-qemu-kvm: 6.1.0-2
pve-xtermjs: 4.12.0-1
qemu-server: 7.1-3
smartmontools: 7.2-pve2
spiceterm: 3.2-2
swtpm: 0.7.0~rc1+2
vncterm: 1.7-1
zfsutils-linux: 2.1.1-pve3

Edit, Nevermind, it seems to be enabled now when i went to give some output.... weird.

nfs rw,relatime,vers=3,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,nconnect=16,timeo=600,retrans=2,sec=sys,mountaddr=1

 

[HellDryx]

Hi @aghadjip ,

Do you or anyone else have any insight on how to make this work out ?

I'm actually trying to do the same exact thing but the nconnect options does not show up for me.

storage.cfg :

nfs: Data-2
        export /xxx/yyy
        path /mnt/pve/yyy
        server X.X.X.X
        content images
        options vers=4.1,nconnect=8
        prune-backups keep-all=1

findmnt :

...
/mnt/pve/YYY    X.X.X.X:/XXX/YYY      nfs4       rw,relatime,vers=4.1,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=Z.Z.Z.Z,local_lock=none,addr=X.X.X.X
...

pveversion -v :

proxmox-ve: 7.1-1 (running kernel: 5.13.19-2-pve)
pve-manager: 7.1-8 (running version: 7.1-8/5b267f33)
pve-kernel-helper: 7.1-6
pve-kernel-5.13: 7.1-5
pve-kernel-5.13.19-2-pve: 5.13.19-4
pve-kernel-5.13.19-1-pve: 5.13.19-3
ceph-fuse: 15.2.15-pve1
corosync: 3.1.5-pve2
criu: 3.15-1+pve-1
glusterfs-client: 9.2-1
ifupdown2: 3.1.0-1+pmx3
ksm-control-daemon: 1.4-1
libjs-extjs: 7.0.0-1
libknet1: 1.22-pve2
libproxmox-acme-perl: 1.4.0
libproxmox-backup-qemu0: 1.2.0-1
libpve-access-control: 7.1-5
libpve-apiclient-perl: 3.2-1
libpve-common-perl: 7.0-14
libpve-guest-common-perl: 4.0-3
libpve-http-server-perl: 4.0-4
libpve-storage-perl: 7.0-15
libspice-server1: 0.14.3-2.1
lvm2: 2.03.11-2.1
lxc-pve: 4.0.11-1
lxcfs: 4.0.11-pve1
novnc-pve: 1.2.0-3
proxmox-backup-client: 2.1.2-1
proxmox-backup-file-restore: 2.1.2-1
proxmox-mini-journalreader: 1.3-1
proxmox-widget-toolkit: 3.4-4
pve-cluster: 7.1-2
pve-container: 4.1-3
pve-docs: 7.1-2
pve-edk2-firmware: 3.20210831-2
pve-firewall: 4.2-5
pve-firmware: 3.3-3
pve-ha-manager: 3.3-1
pve-i18n: 2.6-2
pve-qemu-kvm: 6.1.0-3
pve-xtermjs: 4.12.0-1
qemu-server: 7.1-4
smartmontools: 7.2-1
spiceterm: 3.2-2
swtpm: 0.7.0~rc1+2
vncterm: 1.7-1
zfsutils-linux: 2.1.1-pve3

EDIT : added findmnt output

 

[colnetwork]

Hello, nconnect is available on nfs version 4.1 and 4.2 on Kernel 5.3 or higher. You may edit /etc/pve/storage.cfg and update the options line as follows:
options vers=4.1,fsc,noatime,nodiratime,nconnect=16
or
options vers=4.2,fsc,noatime,nodiratime,nconnect=16
depending on which 4.X version is supported by your nfs server. Also, please take into consideration that nconnect=16 is a bit high thus may saturate the net line. You may look into testing from lower values such as 2, 4 and up to 8.

You need to unmount and re-mount after applying the changes. You may check /proc/mounts to validate new settings took place.
Note: Mount protocol must be set to tcp

 

[Docop2]

Was it only usefull if you have a multi nic system and.. thoses nic are not bond together ? As having 1 server with 1 port.. with or not the nconnect option, i guess we will only get the max speed of the nic present...