[ovirt-users] oVirt 4.1.5 Finally GlusterFS via lbgfapi

Fri Aug 25 12:14:39 UTC 2017

Hello,

setting DNS glusterfs.rxmgmt.databay.de to only one IP didn't change
anything.

[root at microcloud22 ~]# dig glusterfs.rxmgmt.databay.de

; <<>> DiG 9.9.4-RedHat-9.9.4-50.el7_3.1 <<>> glusterfs.rxmgmt.databay.de
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35135
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 6

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;glusterfs.rxmgmt.databay.de.   IN      A

;; ANSWER SECTION:
glusterfs.rxmgmt.databay.de. 84600 IN   A       172.16.252.121

;; AUTHORITY SECTION:
rxmgmt.databay.de.      84600   IN      NS      ns3.databay.de.
rxmgmt.databay.de.      84600   IN      NS      ns.databay.de.

vdsm.log still shows:
2017-08-25 14:02:38,476+0200 INFO  (periodic/0) [vdsm.api] FINISH
repoStats return={u'7c8deaa8-be02-4aaf-b9b4-ddc8da99ad96': {'code': 0,
'actual': True, 'version': 4, 'acquired': True, 'delay': '0.000295126',
'lastCheck': '0.8', 'valid': True},
u'2b2a44fc-f2bd-47cd-b7af-00be59e30a35': {'code': 0, 'actual': True,
'version': 0, 'acquired': True, 'delay': '0.000611748', 'lastCheck':
'3.6', 'valid': True}, u'5d99af76-33b5-47d8-99da-1f32413c7bb0': {'code':
0, 'actual': True, 'version': 4, 'acquired': True, 'delay':
'0.000324379', 'lastCheck': '3.6', 'valid': True},
u'a7fbaaad-7043-4391-9523-3bedcdc4fb0d': {'code': 0, 'actual': True,
'version': 0, 'acquired': True, 'delay': '0.000718626', 'lastCheck':
'4.1', 'valid': True}} from=internal,
task_id=ec205bf0-ff00-4fac-97f0-e6a7f3f99492 (api:52)
2017-08-25 14:02:38,584+0200 ERROR (migsrc/ffb71f79) [virt.vm]
(vmId='ffb71f79-54cd-4f0e-b6b5-3670236cb497') failed to initialize
gluster connection (src=0x7fd82001fc30 priv=0x7fd820003ac0): Success
(migration:287)
2017-08-25 14:02:38,619+0200 ERROR (migsrc/ffb71f79) [virt.vm]
(vmId='ffb71f79-54cd-4f0e-b6b5-3670236cb497') Failed to migrate
(migration:429)
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line
411, in run
    self._startUnderlyingMigration(time.time())
  File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line
487, in _startUnderlyingMigration
    self._perform_with_conv_schedule(duri, muri)
  File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line
563, in _perform_with_conv_schedule
    self._perform_migration(duri, muri)
  File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line
529, in _perform_migration
    self._vm._dom.migrateToURI3(duri, params, flags)
  File "/usr/lib/python2.7/site-packages/vdsm/virt/virdomain.py", line
69, in f
    ret = attr(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py",
line 123, in wrapper
    ret = f(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 944, in
wrapper
    return func(inst, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1939, in
migrateToURI3
    if ret == -1: raise libvirtError ('virDomainMigrateToURI3() failed',
dom=self)
libvirtError: failed to initialize gluster connection
(src=0x7fd82001fc30 priv=0x7fd820003ac0): Success

One thing I noticed in destination vdsm.log:
2017-08-25 10:38:03,413+0200 ERROR (jsonrpc/7) [virt.vm]
(vmId='ffb71f79-54cd-4f0e-b6b5-3670236cb497') *Alias not found for
device type disk during migration at destination host (vm:4587)*
2017-08-25 10:38:03,478+0200 INFO  (jsonrpc/7) [root]  (hooks:108)
2017-08-25 10:38:03,492+0200 INFO  (jsonrpc/7) [jsonrpc.JsonRpcServer]
RPC call VM.migrationCreate succeeded in 0.51 seconds (__init__:539)
2017-08-25 10:38:03,669+0200 INFO  (jsonrpc/2) [vdsm.api] START
destroy(gracefulAttempts=1) from=::ffff:172.16.252.122,45736 (api:46)
2017-08-25 10:38:03,669+0200 INFO  (jsonrpc/2) [virt.vm]
(vmId='ffb71f79-54cd-4f0e-b6b5-3670236cb497') Release VM resources (vm:4254)
2017-08-25 10:38:03,670+0200 INFO  (jsonrpc/2) [virt.vm]
(vmId='ffb71f79-54cd-4f0e-b6b5-3670236cb497') Stopping connection
(guestagent:430)
2017-08-25 10:38:03,671+0200 INFO  (jsonrpc/2) [vdsm.api] START
teardownImage(sdUUID=u'5d99af76-33b5-47d8-99da-1f32413c7bb0',
spUUID=u'00000001-0001-0001-0001-0000000000b9',
imgUUID=u'9c007b27-0ab7-4474-9317-a294fd04c65f', volUUID=None)
from=::ffff:172.16.252.122,45736,
task_id=4878dd0c-54e9-4bef-9ec7-446b110c9d8b (api:46)
2017-08-25 10:38:03,671+0200 INFO  (jsonrpc/2) [vdsm.api] FINISH
teardownImage return=None from=::ffff:172.16.252.122,45736,
task_id=4878dd0c-54e9-4bef-9ec7-446b110c9d8b (api:52)
2017-08-25 10:38:03,672+0200 INFO  (jsonrpc/2) [virt.vm]
(vmId='ffb71f79-54cd-4f0e-b6b5-3670236cb497') Stopping connection
(guestagent:430)

Am 25.08.2017 um 14:03 schrieb Denis Chaplygin:
> Hello!
>
> On Fri, Aug 25, 2017 at 1:40 PM, Ralf Schenk <rs at databay.de
> <mailto:rs at databay.de>> wrote:
>
>     Hello,
>
>     I'm using the DNS Balancing gluster hostname for years now, not
>     only with ovirt. No software so far had a problem. And setting the
>     hostname to only one Host of course breaks one advantage of a
>     distributed/replicated Cluster File-System like loadbalancing the
>     connections to the storage and/or failover if one host is missing.
>     In earlier ovirt it wasn't possible to specify something like
>     "backupvolfile-server" for a High-Available hosted-engine rollout
>     (which I use).
>
>
> As far as i know, backup-volfile-servers is a recommended way to keep
> you filesystem mountable in case of server failure. While fs is
> mounted, gluster will automatically provide failover. And you
> definitely can specify backup-volfile-servers in the storage domain
> configuration.
>  
>
>     I already used live migration in such a setup. This was done with
>     pure libvirt setup/virsh and later using OpenNebula.
>
>
> Yes, but it was based on a accessing gluster volume as a mount
> filesystem, not directly... And i would like to exclude that from list
> of possible causes.
>

-- 

*Ralf Schenk*
fon +49 (0) 24 05 / 40 83 70
fax +49 (0) 24 05 / 40 83 759
mail *rs at databay.de* <mailto:rs at databay.de>

*Databay AG*
Jens-Otto-Krag-Straße 11
D-52146 Würselen
*www.databay.de* <http://www.databay.de>

Sitz/Amtsgericht Aachen • HRB:8437 • USt-IdNr.: DE 210844202
Vorstand: Ralf Schenk, Dipl.-Ing. Jens Conze, Aresch Yavari, Dipl.-Kfm.
Philipp Hermanns
Aufsichtsratsvorsitzender: Wilhelm Dohmen

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