[ovirt-users] NFS IO timeout configuration

[Vinzenz Feenstra]

> On Jan 12, 2016, at 8:32 AM, Markus Stockhausen <stockhausen at collogia.de> wrote:
> 
> Hi there,
> 
> we got a nasty situation yesterday in our OVirt 3.5.6 environment. 
> We ran a LSM that failed during the cleanup operation. To be precise 
> when the process deleted an image on the source NFS storage. 
> 
> Engine log gives:
> 
> 2016-01-11 20:49:45,120 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.DeleteImageGroupVDSCommand] (org.ovirt.thread.pool-8-thread-14) [77277f0] START, DeleteImageGroupVDSCommand( storagePoolId = 94ed7a19-fade-4bd6-83f2-2cbb2f730b95, ignoreFailoverLimit = false, storageDomainId = 272ec473-6041-42ee-bd1a-732789dd18d4, imageGroupId = aed132ef-703a-44d0-b875-db8c0d2c1a92, postZeros = false, forceDelete = false), log id: b52d59c
> ...
> 2016-01-11 20:50:45,206 ERROR [org.ovirt.engine.core.vdsbroker.irsbroker.DeleteImageGroupVDSCommand] (org.ovirt.thread.pool-8-thread-14) [77277f0] Failed in DeleteImageGroupVDS method
> 
> VDSM (SPM) log gives:
> 
> Thread-97::DEBUG::2016-01-11 20:49:45,737::fileSD::384::Storage.StorageDomain::(deleteImage) Removing file: /rhev/data-center/mnt/1.2.3.4:_var_nas2_OVirtIB/272ec473-6041-42ee-bd1a-732789dd18d4/images/_remojzBd1r/0d623afb-291e-4f4c-acba-caecb125c4ed
> ...
> Thread-97::ERROR::2016-01-11 20:50:45,737::task::866::Storage.TaskManager.Task::(_setError) Task=`cd477878-47b4-44b1-85a3-b5da19543a5e`::Unexpected error
> Traceback (most recent call last):
>  File "/usr/share/vdsm/storage/task.py", line 873, in _run
>    return fn(*args, **kargs)
>  File "/usr/share/vdsm/logUtils.py", line 45, in wrapper
>    res = f(*args, **kwargs)
>  File "/usr/share/vdsm/storage/hsm.py", line 1549, in deleteImage
>    pool.deleteImage(dom, imgUUID, volsByImg)
>  File "/usr/share/vdsm/storage/securable.py", line 77, in wrapper
>    return method(self, *args, **kwargs)
>  File "/usr/share/vdsm/storage/sp.py", line 1884, in deleteImage
>    domain.deleteImage(domain.sdUUID, imgUUID, volsByImg)
>  File "/usr/share/vdsm/storage/fileSD.py", line 385, in deleteImage
>    self.oop.os.remove(volPath)
>  File "/usr/share/vdsm/storage/outOfProcess.py", line 245, in remove
>    self._iop.unlink(path)
>  File "/usr/lib/python2.7/site-packages/ioprocess/__init__.py", line 455, in unlink
>    return self._sendCommand("unlink", {"path": path}, self.timeout)
>  File "/usr/lib/python2.7/site-packages/ioprocess/__init__.py", line 385, in _sendCommand
>    raise Timeout(os.strerror(errno.ETIMEDOUT))
> Timeout: Connection timed out
> 
> Reading the docs I got the idea that vdsm default 60 second timeout
> for IO operations might be changed within /etc/vdsm/vdsm.conf
> 
> [irs]
> process_pool_timeout = 180
> 
> Can anyone confirm that this will solve the problem?

Well it will increase the time to 3 minutes and takes effect after restarting vdsm and supervdsm - If that is enough that might depend on your setup.

> 
> Markus
> 
> 
> 
> 
> 
> <InterScan_Disclaimer.txt>_______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users