Thank you very much for your reply.
I ran the commands you asked (see below) but a directory named as the uuid of the master domain is not mounted. We tried to restart the VDSM and the entire machine it didn't help.
We succeeded to manually mount "/home/BO_Ovirt_Storage" to a temporary directory.

postgres=# \connect engine;
You are now connected to database "engine" as user "postgres".
engine=# select current_database();
 current_database
------------------
 engine
(1 row)
engine=# select sds.id, ssc.connection from storage_domain_static sds join storage_server_connections ssc on sds.storage=ssc.id where sds.id='1083422e-a5db-41b6-b667-b9ef1ef244f0';
                  id                  |                 connection
--------------------------------------+--------------------------------------------
 1083422e-a5db-41b6-b667-b9ef1ef244f0 | bufferoverflow.home:/home/BO_Ovirt_Storage
(1 row)

[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 ~]$ ls -la /home/
total 36
drwxr-xr-x.  6 root root  4096 Mar 22 11:25 .
dr-xr-xr-x. 19 root root  4096 Apr 12 18:53 ..
drwxr-xr-x.  3 vdsm kvm   4096 Mar 27 17:33 BO_ISO_Domain
drwxr-xr-x.  3 vdsm kvm   4096 Mar 27 17:33 BO_Ovirt_Storage
drwx------.  2 root root 16384 Mar  6 09:11 lost+found
drwx------. 27 wil  wil   4096 Apr 15 01:50 wil
[wil@bufferoverflow ~]$ cd /home/BO_Ovirt_Storage/
[wil@bufferoverflow BO_Ovirt_Storage]$ ls -la
total 12
drwxr-xr-x. 3 vdsm kvm  4096 Mar 27 17:33 .
drwxr-xr-x. 6 root root 4096 Mar 22 11:25 ..
drwxr-xr-x  5 vdsm kvm  4096 Mar 20 23:06 1083422e-a5db-41b6-b667-b9ef1ef244f0
-rwxr-xr-x  1 vdsm kvm     0 Mar 27 17:33 __DIRECT_IO_TEST__

Thanks,
Limor


On Mon, Apr 15, 2013 at 4:02 PM, Tal Nisan <tnisan@redhat.com> wrote:
Hi Limor,
First we should probably start with checking which mount is the master storage domain that appears as not found, this should be checked against the oVirt server database, please run

select sds.id, ssc.connection from storage_domain_static sds join storage_server_connections ssc on sds.storage=ssc.id
where sds.id='1083422e-a5db-41b6-b667-b9ef1ef244f0';

You can run this via psql or a Postgres ui if you have one.
In the results you will see the storage connection in the format of %hostname%:/%mountName%, then in the VDSM server check in the mount list that you see that it is mounted, the mount itself should contain a directory named as the uuid of the master domain, let me know the result.

Tal.




On 04/12/2013 07:29 PM, Limor Gavish wrote:
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
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