On Sun, Feb 19, 2017 at 12:42 PM, Денис Мишанин <mishanindv(a)gmail.com&gt; wrote: > Hello. > After restarting the ISCSI storage I can not run ovirt-engine in prodation > use I am looking for help You have this in vdsm.log: Thread-640::DEBUG::2017-02-19 13:40:35,756::lvm::288::Storage.Misc.excCmd::(cmd) /usr/bin/taskset --cpu-list 0-23 /usr/bin/sudo -n /usr/sbin/lvm vgs --config ' devices { preferred_names = [ "^/dev/mapper/"] ignore_suspended_devices=1 write_cache_state=0 disable_after_error_count=3 filter = [ '\''a|/dev/mapper/3600605b00a20bf201e29c6bf236a6651|'\'', '\''r|.*|'\'' ] } global { locking_type=1 prioritise_write_locks=1 wait_for_locks=1 use_lvmetad=0 } backup { retain_min = 50 retain_days = 0 } ' --noheadings --units b --nosuffix --separator '|' --ignoreskippe dcluster -o uuid,name,attr,size,free,extent_size,extent_count,free_count,tags,vg_mda_size,vg_mda_free,lv_count,pv_count,pv_name c7c466c5-983d-40b2-8f8c-d569755281f5 (cwd None) Thread-640::DEBUG::2017-02-19 13:40:35,784::lvm::288::Storage.Misc.excCmd::(cmd) FAILED: <err> = ' WARNING: Not using lvmetad because config setting use_lvmetad=0.\n WARNING: To avoid cor ruption, rescan devices to make changes visible (pvscan --cache).\n Volume group "c7c466c5-983d-40b2-8f8c-d569755281f5" not found\n Cannot process volume group c7c466c5-983d-40b2-8f8c-d56 9755281f5\n'; <rc> = 5 Thread-640::WARNING::2017-02-19 13:40:35,785::lvm::376::Storage.LVM::(_reloadvgs) lvm vgs failed: 5 [] [' WARNING: Not using lvmetad because config setting use_lvmetad=0.', ' WARNING: To avoid corruption, rescan devices to make changes visible (pvscan --cache).', ' Volume group "c7c466c5-983d-40b2-8f8c-d569755281f5" not found', ' Cannot process volume group c7c466c5-983d- 40b2-8f8c-d569755281f5'] Not sure what might have caused this. Is your iSCSI storage ok after the reboot? You might try to reboot the client (host) or further debug it on kernel/iSCSI level. Check e.g. 'lsblk', iscsiadm, etc. Best, -- Didi