Hello Mario,

On 16/07/2015 04:12 μμ, m...@ohnewald.net wrote:
Check your vdsm Logs on your nodes. I bet you find something about I/O errors i guess...
Yes there are many IO errors
libvirtEventLoop::INFO::2015-07-16 22:30:02,237::vm::3609::virt.vm::(onIOError) vmId=`bb46929c-0b4e-4f01-868a-7e7638fa943b`::abnormal vm stop device virtio-disk0 error eother libvirtEventLoop::INFO::2015-07-16 22:30:02,237::vm::4889::virt.vm::(_logGuestCpuStatus) vmId=`bb46929c-0b4e-4f01-868a-7e7638fa943b`::CPU stopped: onIOError
Full vdsm log - https://paste.fedoraproject.org/245148/43707759/


and glusterfs errors
W [MSGID: 114031] [client-rpc-fops.c:2973:client3_3_lookup_cbk] 0-distributed_vol-client-0: remote operation failed: Transport endpoint is not connected. Path: / (00000000-0000-0000-0000-000000000001) [Transport endpoint is not connected] W [fuse-bridge.c:2273:fuse_writev_cbk] 0-glusterfs-fuse: 362694: WRITE => -1 (Transport endpoint is not connected)


K.


Also check your glusterfs logs. Maybe you can find some problems, too.

Mario



Am 16.07.15 um 10:29 schrieb Konstantinos Christidis:
Hello oVirt users,

I am facing a serious problem regarding my GlusterFS storage and virtual
machines that have *bootable* disks on this storage.

All my VMs that have GlusterFS disks are occasionally (1-2 times/hour)
becoming paused with the following Error: VM vm02.mytld has been paused
due to unknown storage error.

Engine Log
INFO  [org.ovirt.engine.core.vdsbroker.VmAnalyzer]
(DefaultQuartzScheduler_Worker-69) [] VM
'247bb0f3-1a77-44e4-a404-3271eaee94be'(vm02.mytld) moved from 'Up' -->
'Paused'
INFO
[org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
(DefaultQuartzScheduler_Worker-69) [] Correlation ID: null, Call Stack:
null, Custom Event ID: -1, Message: VM vm02.mytld has been paused.
ERROR
[org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
(DefaultQuartzScheduler_Worker-69) [] Correlation ID: null, Call Stack:
null, Custom Event ID: -1, Message: VM vm02.mytld has been paused due to
unknown storage error

My iSCSI VM's, some of which may have mounted (not bootable) disks from
the same GlusterFS storage, do NOT suffer from this issue AFAIK.

My installation (oVirt 3.6/CentOS 7) is pretty much a typical one, with
a GlusterFS enabled cluster with 4 hosts, 2-3 networks, and 6-7 VMs..

Thanks,

K.
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