Re: [Xen-users] xen dom0 nfs hangs

[krichy@xxxxxxxxxxxx]

Dear Xen users,

I also had an issue strangely with the same symptoms as Mike had.

We run ganeti, all nodes have a /srv/ganeti/shared-file-storage mountpoint 
from an nfs server, and with debian jessie's xen (4.4) if a node has a 
high overall iops from all of its guests, it will stall sometimes. The 
same problem as Mike's: qemu processes remain in D state, the nfs path can 
be read but not written to it.
Mike, could you solve your issue somehow?

Earlier we were using debian wheezy with kernel 3.2 and xen 4.1. I dont 
know id the linux nfs client implementation has some bug or the handling 
of file backed vbds cause the issue.
Unfortunately I cannot reproduce the problem, it just arises randomly. I 
assume it is related to high iops.
Thanks in advance,


Kojedzinszky Richard
Euronet Magyarorszag Informatika Zrt.

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