Hi, For some reason, without doing anything, all the storage domains became down and restarting VDSM or the entire machine do not bring it up. I am not using lvm The following errors appear several times in vdsm.log (full logs are attached): Thread-22::WARNING::2013-04-12 19:00:08,597::lvm::378::Storage.LVM::(_reloadvgs) lvm vgs failed: 5 [] [' Volume group "1083422e-a5db-41b6-b667-b9ef1ef244f0" not found'] Thread-22::DEBUG::2013-04-12 19:00:08,598::lvm::402::OperationMutex::(_reloadvgs) Operation 'lvm reload operation' released the operation mutex Thread-22::DEBUG::2013-04-12 19:00:08,681::resourceManager::615::ResourceManager::(releaseResource) Trying to release resource 'Storage.5849b030-626e-47cb-ad90-3ce782d831b3' Thread-22::DEBUG::2013-04-12 19:00:08,681::resourceManager::634::ResourceManager::(releaseResource) Released resource 'Storage.5849b030-626e-47cb-ad90-3ce782d831b3' (0 active users) Thread-22::DEBUG::2013-04-12 19:00:08,681::resourceManager::640::ResourceManager::(releaseResource) Resource 'Storage.5849b030-626e-47cb-ad90-3ce782d831b3' is free, finding out if anyone is waiting for it. Thread-22::DEBUG::2013-04-12 19:00:08,682::resourceManager::648::ResourceManager::(releaseResource) No one is waiting for resource 'Storage.5849b030-626e-47cb-ad90-3ce782d831b3', Clearing records. Thread-22::ERROR::2013-04-12 19:00:08,682::task::850::TaskManager.Task::(_setError) Task=`e35a22ac-771a-4916-851f-2fe9d60a0ae6`::Unexpected error Traceback (most recent call last): File "/usr/share/vdsm/storage/task.py", line 857, 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 939, in connectStoragePool masterVersion, options) File "/usr/share/vdsm/storage/hsm.py", line 986, in _connectStoragePool res = pool.connect(hostID, scsiKey, msdUUID, masterVersion) File "/usr/share/vdsm/storage/sp.py", line 695, in connect self.__rebuild(msdUUID=msdUUID, masterVersion=masterVersion) File "/usr/share/vdsm/storage/sp.py", line 1232, in __rebuild masterVersion=masterVersion) File "/usr/share/vdsm/storage/sp.py", line 1576, in getMasterDomain raise se.StoragePoolMasterNotFound(self.spUUID, msdUUID) StoragePoolMasterNotFound: Cannot find master domain: 'spUUID=5849b030-626e-47cb-ad90-3ce782d831b3, msdUUID=1083422e-a5db-41b6-b667-b9ef1ef244f0' Thread-22::DEBUG::2013-04-12 19:00:08,685::task::869::TaskManager.Task::(_run) Task=`e35a22ac-771a-4916-851f-2fe9d60a0ae6`::Task._run: e35a22ac-771a-4916-851f-2fe9d60a0ae6 ('5849b030-626e-47cb-ad90-3ce782d831b3', 1, '5849b030-626e-47cb-ad90-3ce782d831b3', '1083422e-a5db-41b6-b667-b9ef1ef244f0', 3942) {} failed - stopping task Thread-22::DEBUG::2013-04-12 19:00:08,685::task::1194::TaskManager.Task::(stop) Task=`e35a22ac-771a-4916-851f-2fe9d60a0ae6`::stopping in state preparing (force False) Thread-22::DEBUG::2013-04-12 19:00:08,685::task::974::TaskManager.Task::(_decref) Task=`e35a22ac-771a-4916-851f-2fe9d60a0ae6`::ref 1 aborting True Thread-22::INFO::2013-04-12 19:00:08,686::task::1151::TaskManager.Task::(prepare) Task=`e35a22ac-771a-4916-851f-2fe9d60a0ae6`::aborting: Task is aborted: 'Cannot find master domain' - code 304 *[wil@bufferoverflow ~]$ **sudo vgs --noheadings --units b --nosuffix --separator \| -o uuid,name,attr,size,free,extent_size,extent_count,free_count,tags,vg_mda_size,vg_mda_free * No volume groups found *[wil@bufferoverflow ~]$ **mount* proc on /proc type proc (rw,nosuid,nodev,noexec,relatime) sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime) devtmpfs on /dev type devtmpfs (rw,nosuid,size=8131256k,nr_inodes=2032814,mode=755) securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime) tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev) devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000) tmpfs on /run type tmpfs (rw,nosuid,nodev,mode=755) tmpfs on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,mode=755) cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd) cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset) cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu) cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory) cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices) cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer) cgroup on /sys/fs/cgroup/net_cls type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls) cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio) cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event) /dev/sda3 on / type ext4 (rw,relatime,data=ordered) rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime) debugfs on /sys/kernel/debug type debugfs (rw,relatime) sunrpc on /proc/fs/nfsd type nfsd (rw,relatime) hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime) systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=34,pgrp=1,timeout=300,minproto=5,maxproto=5,direct) mqueue on /dev/mqueue type mqueue (rw,relatime) tmpfs on /tmp type tmpfs (rw) configfs on /sys/kernel/config type configfs (rw,relatime) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime) /dev/sda5 on /home type ext4 (rw,relatime,data=ordered) /dev/sda1 on /boot type ext4 (rw,relatime,data=ordered) kernelpanic.home:/home/KP_Data_Domain on /rhev/data-center/mnt/kernelpanic.home:_home_KP__Data__Domain type nfs (rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,soft,nosharecache,proto=tcp,timeo=600,retrans=6,sec=sys,mountaddr=10.100.101.100,mountvers=3,mountport=20048,mountproto=udp,local_lock=none,addr=10.100.101.100) bufferoverflow.home:/home/BO_ISO_Domain on /rhev/data-center/mnt/bufferoverflow.home:_home_BO__ISO__Domain type nfs (rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,soft,nosharecache,proto=tcp,timeo=600,retrans=6,sec=sys,mountaddr=10.100.101.108,mountvers=3,mountport=20048,mountproto=udp,local_lock=none,addr=10.100.101.108) *[wil@bufferoverflow ~]$ **sudo find / -name 5849b030-626e-47cb-ad90-3ce782d831b3* /run/vdsm/pools/5849b030-626e-47cb-ad90-3ce782d831b3 *[wil@bufferoverflow ~]$* *sudo find / -name 1083422e-a5db-41b6-b667-b9ef1ef244f0* /home/BO_Ovirt_Storage/1083422e-a5db-41b6-b667-b9ef1ef244f0 I will extremely appreciate any help, Limor Gavish