How does it perform if you backup from local to NFS?
Have you set any NFS mount options or are you using defaults?
Have you set any NFS mount options or are you using defaults?
Slow backups
- Thread starter BloodyIron
- Start date
I've not messed with NFS for a long time so I can't really suggest anything specific, just some things to research on your own.
Look into Jumbo Frames, increase MTU, NFS mount options: rsize, wsize and noatime.
Look into Jumbo Frames, increase MTU, NFS mount options: rsize, wsize and noatime.
I turned on jumbo frames on my switch, set usable MTUs on both ends (the proxmox node and storage system). No improvements there whatsoever in backups.
atime is turned off on the storage end, so is it even possible for the NFS mount to override that???
atime is turned off on the storage end, so is it even possible for the NFS mount to override that???
Code:
(rw,relatime,vers=3,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=REDACTED,mountvers=3,mountport=662,mountproto=udp,local_lock=none,addr=REDACTED)These are the parameters that have been set by the proxmox web gui, I haven't modified them in any way.
Here someone mentions that they mount NFS backup storage backed by zfs with specific options:
https://forum.proxmox.com/threads/n...create-a-wiki-entry-for-nfs.18301/#post-93367
No idea if that would help you but if you tried this you would likely want a different NFS mount for images vs backups.
https://forum.proxmox.com/threads/n...create-a-wiki-entry-for-nfs.18301/#post-93367
No idea if that would help you but if you tried this you would likely want a different NFS mount for images vs backups.
That thread talks about it, but doesn't show tangible changes though 
(or did I miss something???)
(or did I miss something???)as someone else wrote earlier : "In my testlab here I daily backup two VMs over NFS, using vzdump live backup for KVM machines, raw throughput oscilate between 50/60MBs for the first one running on SSD, and 10/20MBs for the second one running on a busy SATA drive."
over the years I've found the same. transfer rate depends on storage speed at nfs AND how compressible the vm is.
over the years I've found the same. transfer rate depends on storage speed at nfs AND how compressible the vm is.
