On Fri, Mar 16, 2018 at 1:25 PM, Enrico Becchetti < enrico.becchetti@pg.infn.it> wrote:
Dear All, Does someone had seen that error ? When I run this command from my virtual machine:
# time dd if=/dev/zero of=enrico.dd bs=4k count=10000000
I don't think it's a very interesting test case for IO performance, but in any case, it may cause the VM to try to write faster than its thin provisioned disk can be extended. A simple workaround would be to change in VDSM the threshold of when it gets extended and by how much. For example: [irs] volume_utilization_percent = 15 volume_utilization_chunk_mb = 4048 Y.
VM was paused due to kind a storage error/problem. Strange message because tell about "no storage space error" but ovirt puts virtual machine in a paused state.
Inside events from ovirt web interface I see this:
"VM has been paused due to lack of storage space"
but no ERROR found in /var/log/vdsm.log.
My oVirt enviroment 4.2.1 has three hypervivosr with FC storage and before now I haven't see any other problem during the normal functioning of the vm , it's seem that this error occurs only when there is massive I/O.
Any ideas ? Thanks a lot. Best Regards Enrico
-- _______________________________________________________________________
Enrico Becchetti Servizio di Calcolo e Reti
Istituto Nazionale di Fisica Nucleare - Sezione di Perugia Via Pascoli,c/o Dipartimento di Fisica 06123 Perugia (ITALY) Phone:+39 075 5852777 Mail: Enrico.Becchetti<at>pg.infn.it ______________________________________________________________________
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