NFS issue (error 524) after upgrade to 9.1

[nardial]

Hi,

i recently found an issue with the latest NFS. I always backup up data via rsnapshot to a FreeNAS box. After the 9.1 upgrade i cannot copy "cp -al" anymore. It produces the following error:

Code:

/bin/cp: cannot create link `_my_filename_here_': Unknown error 524

and later:

Code:

ERROR: /bin/cp -al _my_filname_here (result 256, exit status 1).  Perhaps your cp does not support -al options?
ERROR: Error! cp_al("_my_filname_here", "_my_filname_there")

Is it a known problem and is there a workaround? I couldn't find sth. in the bug tracker!

 

[dlavigne]

Are the hard links crossing datasets or volumes?

 

[nardial]

It happens on two nodes. Both with just one large zfs volume.
Client OS is ubuntu 10.04 in both cases and it worked for about two years before the upgrade with the same configuration.
maybe there was a ubuntu upgrade in the same time, but i could not locate any that makes sense.

 

[dlavigne]

What command are you using to mount the NFS share on the problematic systems? (full command with options)

 

[nardial]

I am mounting it via fstab with the following options:

Code:

nfs    rw,hard,intr,tcp,nfsvers=3,nodev,nosuid

I also tested it with -o nfsvers=3 , didn't work. Same error!

 

[Andy M]

I have this same error code, using rsync and the --link-dest option. Same as cp -al, rsync is hardlinking instead copying.

Any ideas as to cause of a 524? I assume it generated by NFS not being able to do something on the ZFS volume??

 

[dlavigne]

Is this still an issue in the 9.2.1.x series?

 

[nardial]

Yes, it is still an issue in 9.2.1.1
By uncommenting the cmd_cp path in the rsnapshot.conf there is at least a workaround available!