large NFS copy locks up/hang client with large files (again) (lucid)

[brdhse1]

Anyone? This is embarrassing, Ubuntu.

[andrewrchambers]

@nsx241

FYI I've tried switching to Fedora and my computer still crashes when transferring files over NFS4 - I'm unable to even populate my shotwell library.

I've put an old 100/10 NIC in my machine for the time being until this gets resolved... This is clearly not ideal as I'm mounting /home over NFS and this slows things down considerably but I prefer this option to having complete system lock ups...

[akshunj]

I switched to samba. this issue is ridiculous...

[olesk]

Could we please have the topic changed? The [SOLVED] tag is definitely not appropriate...

[olesk]

It appears I've stumbled over a possible workaround while trying to track down bug reports on this issue.

Mounting the nfs shares with a "udp" parameter, like so, seem to remove the issue for me:

nfserver1:/Volumes/Movies on /nfs/Movies type nfs (rw,rsize=8192,wsize=8192,timeo=14,intr,udp,addr=10.0.0.98)

Could someone else please verify? I've done a couple of large transfers that twice hung my system earlier today without the "udp" parameter (Ubuntu defaults to "tcp" unless "udp" is explicitly stated"). UDP should also be faster and on a modern home network, the added reliability of TCP shouldn't really be required unless your switch/router/server drops a lot of packages.

Update: IT appears a concrete fix is today included in the updated 2.6.35-28 kernel (see the change log). Link to bug report: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/585657

[rex86]

Hello everyone!

Has anyone read some of this stuff?

interesting article

The most interesting part starts from Troubleshooting NFS.

Also can anyone post the output of nfsstat command?

Does anyone of you still have the same problem with >2.6.x kernels?

[davidjo]

Hello everyone!

Has anyone read some of this stuff?

interesting article

The most interesting part starts from Troubleshooting NFS.

Also can anyone post the output of nfsstat command?

Does anyone of you still have the same problem with >2.6.x kernels?

Yes, I have tried with Kubuntu 11.10, Xubuntu and the Mint 12 variants. All freeze with kernel 3.0 and reading large files (>5GB) from a NAS box connected via NFS. Not everytime, but repeated reads will provoke the freeze.

I'll try again with Kubuntu 12.04 beta.

[davidjo]

Yes, I have tried with Kubuntu 11.10, Xubuntu and the Mint 12 variants. All freeze with kernel 3.0 and reading large files (>5GB) from a NAS box connected via NFS. Not everytime, but repeated reads will provoke the freeze.

I'll try again with Kubuntu 12.04 beta.

I've retried this with Kubuntu 12.04 beta 2, and after about 30 copies of a 6+GB file from my NFS shared NAS storage device to my local hard disk, all looks OK. This is running kernel 3.2, and TCP, not UDP.

Looks like I can finally upgrade my system, which I think is based on the last LTS release! Thank you.

[Qwerty9119]

Has this issue been resolved? I see that davidjo was able to testing something out.

Anyone?

Q

[Peter Bell]

I'm getting repeatable lock-ups when copying files from my file server to my ubuntu desktop (11.10 and, now, with 12.04 final). The lock-up occurs quite early, for instance after 158MB.


The fileserver is running a slackware-based package. If the server is using a 2.6 kernel, there are no lockups, but as soon as the server is upgraded to a 3.0 (or 3.2) kernel, the lock-ups return.

Perhaps this problem occurs only if both machines are running a 3+ kernel? Is that the same as nfsv4 support?

What makes it so annoying is that Nautilus refuses to die after the lockup, even kill -9 doesn't work.