Florian Gleixner wrote:
On 12/10/2014 08:57 AM, Per Jessen wrote:
Probably a bit of a long shot, but never mind - is anyone using nfsv4?
I have a test-system with root on NFSv4. I have been running CPU & I/O stresstests for about a week now, and they have all ended in a hung system after a 8-16 hours (hard to say when, usually in the middle of the night). The I/O stresstests target locally attached disk, not the NFS root. The symptoms are those of a slow death, but have sofar all ended in a complete hang, system not even responding to Ctrl-Alt-Sysrq. This sounds to me like the NFS root not responding.
No interesting console output, I've had a serial console attached for days. I was about to swap the disk controllers, when I thought of maybe trying NFSv3. This works much better ... the system has been chugging along for almost 24 hours now, no indications of any problems.
Does this sound familiar to anyone?
It should be easier to try to replicate the problem using a machine that does not have a NFS root. Put the system on a local disk, do your stresstest and try to access the nfs4 mounted filesystem at the same time. This probably gives you more post mortem information in the logs.
Thanks, that's a good idea. I'll have a look at that tomorrow. -- Per Jessen, Zürich (3.8°C) http://www.hostsuisse.com/ - virtual servers, made in Switzerland. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org