Le 16/04/2014 11:35, Nicolas Ecarnot a écrit :

Hi,

Our NFS storage domain is stored as a LUN, and served via a NFS server. I have to change this NFS server, but I don't need to change the LUN.

After setting this NFS export domain in maintenance and detached, is it safe to just update the database table "storage_server_connections" and restart the engine?

Regards,

PS : I read no answer to this : http://lists.ovirt.org/pipermail/users/2014-March/022610.html

Hi, At present, I have two oVirt setups : oldest one in oVirt 3.3.0-4.el6 which was used to create the NFS export domain, and one in oVirt 3.4.0-1.el6. I used to attach it in one Datacenter or the other, carefully putting it into maintenance mode, then gracefully detaching it, and it worked. I had to change the NFS server that was serving this LUN, and I finally updated the database table in the 3.4 setup. I was immediately able to play with it, attach/import/etc... After detaching it, I tried the same from the 3.3.0 and it failed, with the engine log file below. I tried to delete the line in the 3.3.0 database, and to import from scratch. The line gets correctly re-created, but the import fails the same way. Has anyone an idea? 2014-04-16 14:56:03,878 INFO [org.ovirt.engine.core.vdsbroker.irsbroker.AttachStorageDomainVDSCommand] (pool-6-thread-49) [7a31ca00] START, Atta chStorageDomainVDSCommand( storagePoolId = 5849b030-626e-47cb-ad90-3ce782d831b3, ignoreFailoverLimit = false, storageDomainId = a7c189dd-4980-49a b-ad86-65a14235cbe4), log id: 62dfd8c8 2014-04-16 14:56:03,945 ERROR [org.ovirt.engine.core.vdsbroker.irsbroker.AttachStorageDomainVDSCommand] (pool-6-thread-49) [7a31ca00] Failed in A ttachStorageDomainVDS method 2014-04-16 14:56:03,973 ERROR [org.ovirt.engine.core.vdsbroker.irsbroker.AttachStorageDomainVDSCommand] (pool-6-thread-49) [7a31ca00] Error code AcquireLockFailure and error message IRSGenericException: IRSErrorException: Failed to AttachStorageDomainVDS, error = Cannot obtain lock: "id=a7 c189dd-4980-49ab-ad86-65a14235cbe4, rc=1, out=['error - lease file does not exist or is not writeable', 'usage: /usr/libexec/vdsm/spmprotect.sh C OMMAND PARAMETERS', 'Commands:', ' start { sdUUID hostId renewal_interval_sec lease_path[:offset] lease_time_ms io_op_timeout_ms fail_retries }' , 'Parameters:', ' sdUUID - domain uuid', ' hostId - host id in pool', ' renewal_interval_sec - intervals for l ease renewals attempts', ' lease_path - path to lease file/volume', ' offset - offset of lease within file', ' lease _time_ms - time limit within which lease must be renewed (at least 2*renewal_interval_sec)', ' io_op_timeout_ms - I/O operation tim eout', ' fail_retries - Maximal number of attempts to retry to renew the lease before fencing (<= lease_time_ms/renewal_interval_sec)'] , err=[]" 2014-04-16 14:56:03,977 ERROR [org.ovirt.engine.core.vdsbroker.irsbroker.AttachStorageDomainVDSCommand] (pool-6-thread-49) [7a31ca00] Command Att achStorageDomainVDS execution failed. Exception: IrsOperationFailedNoFailoverException: IRSGenericException: IRSErrorException: Failed to AttachS torageDomainVDS, error = Cannot obtain lock: "id=a7c189dd-4980-49ab-ad86-65a14235cbe4, rc=1, out=['error - lease file does not exist or is not wr iteable', 'usage: /usr/libexec/vdsm/spmprotect.sh COMMAND PARAMETERS', 'Commands:', ' start { sdUUID hostId renewal_interval_sec lease_path[:off set] lease_time_ms io_op_timeout_ms fail_retries }', 'Parameters:', ' sdUUID - domain uuid', ' hostId - host id i n pool', ' renewal_interval_sec - intervals for lease renewals attempts', ' lease_path - path to lease file/volume', ' offset - offset of lease within file', ' lease_time_ms - time limit within which lease must be renewed (at least 2*renewal_interval_ sec)', ' io_op_timeout_ms - I/O operation timeout', ' fail_retries - Maximal number of attempts to retry to renew the lease befor e fencing (<= lease_time_ms/renewal_interval_sec)'], err=[]" 2014-04-16 14:56:03,980 INFO [org.ovirt.engine.core.vdsbroker.irsbroker.AttachStorageDomainVDSCommand] (pool-6-thread-49) [7a31ca00] FINISH, Att achStorageDomainVDSCommand, log id: 62dfd8c8 2014-04-16 14:56:03,981 ERROR [org.ovirt.engine.core.bll.storage.AttachStorageDomainToPoolCommand] (pool-6-thread-49) [7a31ca00] Command org.ovir t.engine.core.bll.storage.AttachStorageDomainToPoolCommand throw Vdc Bll exception. With error message VdcBLLException: org.ovirt.engine.core.vds broker.irsbroker.IrsOperationFailedNoFailoverException: IRSGenericException: IRSErrorException: Failed to AttachStorageDomainVDS, error = Cannot obtain lock: "id=a7c189dd-4980-49ab-ad86-65a14235cbe4, rc=1, out=['error - lease file does not exist or is not writeable', 'usage: /usr/libexec/v dsm/spmprotect.sh COMMAND PARAMETERS', 'Commands:', ' start { sdUUID hostId renewal_interval_sec lease_path[:offset] lease_time_ms io_op_timeout _ms fail_retries }', 'Parameters:', ' sdUUID - domain uuid', ' hostId - host id in pool', ' renewal_interval_sec - intervals for lease renewals attempts', ' lease_path - path to lease file/volume', ' offset - offset of lease wit hin file', ' lease_time_ms - time limit within which lease must be renewed (at least 2*renewal_interval_sec)', ' io_op_timeout_ms - I/O operation timeout', ' fail_retries - Maximal number of attempts to retry to renew the lease before fencing (<= lease_time_ms/rene wal_interval_sec)'], err=[]" (Failed with VDSM error AcquireLockFailure and code 651) -- Nicolas Ecarnot