On 08/23/2012 01:44 PM, Klaus Steinberger wrote:
Hi,
Nfs4 client randomly hangs on a file or directory (for instance when
performing df or find) and after a few seconds continues. When
preforming strace, it hangs on getdents system call.
Errors on the server side:
Aug 19 21:29:08 host kernel: nfs: server host2 not responding, still trying
Aug 19 21:31:17 host kernel: nfs: server host2 OK
After a while the load on client and server side increases intensively,
then system on the client side crashes. Reboot required.
Mount options:
Flags:
rw,relatime,vers=4.0,rsize=1048576,wsize=1048576,namlen=255,hard,noresvport,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=IP,local_lock=none,addr=IP
SL5 or SL6 on Server side?
We had many hungs with SL5 as server but with kerberos auth, never tried NFS4
with sec=sys.
Sincerly,
Klaus
We have sl6 as a server and sl6 and sl5 clients... Nfs hangs occur on
sl6 client... (at least I didn't notice any on sl5 clients)...
Soft mount isn't an option because of the nature of the service running
on the machine.
Maybe I could try automount if there will be any difference..
Thanks,
Barbara
