Hi,
I run this command from my SPM , Centos 7.4.1708:

[root@infn-vm05 vdsm]# rpm -qa | grep -i vdsm
vdsm-hook-vmfex-dev-4.20.17-1.el7.centos.noarch
vdsm-python-4.20.17-1.el7.centos.noarch
vdsm-hook-fcoe-4.20.17-1.el7.centos.noarch
vdsm-common-4.20.17-1.el7.centos.noarch
vdsm-jsonrpc-4.20.17-1.el7.centos.noarch
vdsm-hook-ethtool-options-4.20.17-1.el7.centos.noarch
vdsm-hook-openstacknet-4.20.17-1.el7.centos.noarch
vdsm-http-4.20.17-1.el7.centos.noarch
vdsm-client-4.20.17-1.el7.centos.noarch
vdsm-gluster-4.20.17-1.el7.centos.noarch
vdsm-hook-vfio-mdev-4.20.17-1.el7.centos.noarch
vdsm-api-4.20.17-1.el7.centos.noarch
vdsm-network-4.20.17-1.el7.centos.x86_64
vdsm-yajsonrpc-4.20.17-1.el7.centos.noarch
vdsm-4.20.17-1.el7.centos.x86_64
vdsm-hook-vhostmd-4.20.17-1.el7.centos.noarch

Thanks !!!
Enrico

Il 26/06/2018 15:21, Ala Hino ha scritto:
Hi Enrico,

What's the vdsm version that you are using?

The tool introduced in vdsm 4.20.24.

On Tue, Jun 26, 2018 at 3:51 PM, Enrico Becchetti <enrico.becche...@pg.infn.it <mailto:enrico.becche...@pg.infn.it>> wrote:

    Dear Ala,
    if you have a few minutes for me I'd like to ask you to read my issue.
    It's a strange problem because my vm works fine but I can't delete
    its snapshoot.
    Thanks a lot
    Best Regards
    Enrico


    -------- Messaggio Inoltrato --------
    Oggetto:    [ovirt-users] Re: Cannot acquire Lock .... snapshot error
    Data:       Mon, 25 Jun 2018 14:20:21 +0200
    Mittente:   Enrico Becchetti <enrico.becche...@pg.infn.it>
    <mailto:enrico.becche...@pg.infn.it>
    A:  Nir Soffer <nsof...@redhat.com> <mailto:nsof...@redhat.com>
    CC:         users <users@ovirt.org> <mailto:users@ovirt.org>



     Dear Friends ,
    to fix my problem I've try vdsm-tool command but it's seem an error:

    [root@infn-vm05 vdsm]# vdsm-tool check-volume-lease
    Usage: /usr/bin/vdsm-tool [options] <action> [arguments]
    Valid options:
    ......

    as you can see there isn't check-volumes-option and my ovirt
    engine is already at 4.2.
    Any other ideas ?
    Thanks a lot !
    Best Regards
    Enrico



    Il 22/06/2018 17:46, Nir Soffer ha scritto:
    On Fri, Jun 22, 2018 at 3:13 PM Enrico Becchetti
    <enrico.becche...@pg.infn.it
    <mailto:enrico.becche...@pg.infn.it>> wrote:

         Dear All,
        my ovirt 4.2.1.7-1.el7.centos has three hypervisors, lvm
        storage and virtiual machine with
        ovirt-engine. All works fine but with one vm when I try to
        remove its snapshot I have
        this error:

        2018-06-22 07:35:48,155+0200 INFO (jsonrpc/5) [vdsm.api]
        START
        prepareMerge(spUUID=u'18d57688-6ed4-43b8-bd7c-0665b55950b7',
        subchainInfo={u'img_id':
        u'c5611862-6504-445e-a6c8-f1e1a95b5df7', u'sd_id':
        u'47b7c9aa-ef53-48bc-bb55-4a1a0ba5c8d5', u'top_id':
        u'0e6f7512-871d-4645-b9c6-320ba7e3bee7', u'base_id':
        u'e156ac2e-09ac-4e1e-a139-17fa374a96d4'})
        from=::ffff:10.0.0.46,53304,
        flow_id=07011450-2296-4a13-a9ed-5d5d2b91be98,
        task_id=87f95d85-cc3d-4f29-9883-a4dbb3808f88 (api:46)
        2018-06-22 07:35:48,406+0200 INFO (tasks/3) [storage.merge]
        Preparing subchain <SubchainInfo
        sd_id=47b7c9aa-ef53-48bc-bb55-4a1a0ba5c8d5,
        img_id=c5611862-6504-445e-a6c8-f1e1a95b5df7,
        top_id=0e6f7512-871d-4645-b9c6-320ba7e3bee7,
        base_id=e156ac2e-09ac-4e1e-a139-17fa374a96d4
        base_generation=None at 0x7fcf84ae2510> for merge (merge:177)
        2018-06-22 07:35:48,614+0200 INFO (tasks/3) [storage.SANLock]
        Acquiring Lease(name='e156ac2e-09ac-4e1e-a139-17fa374a96d4',
        path='/dev/47b7c9aa-ef53-48bc-bb55-4a1a0ba5c8d5/leases',
        offset=115343360) for host id 1 (clusterlock:377)
        2018-06-22 07:35:48,634+0200 ERROR (tasks/3)
        [storage.guarded] Error acquiring lock <VolumeLease
        ns=04_lease_47b7c9aa-ef53-48bc-bb55-4a1a0ba5c8d5,
        name=e156ac2e-09ac-4e1e-a139-17fa374a96d4, mode=exclusive at
        0x7fcfe09ddf90> (guarded:96)
        AcquireLockFailure: Cannot obtain lock:
        "id=47b7c9aa-ef53-48bc-bb55-4a1a0ba5c8d5, rc=-227, out=Cannot
        acquire Lease(name='e156ac2e-09ac-4e1e-a139-17fa374a96d4',
        path='/dev/47b7c9aa-ef53-48bc-bb55-4a1a0ba5c8d5/leases',
        offset=115343360), err=(-227, 'Sanlock resource not
        acquired', 'Lease resource name is incorrect')"
        2018-06-22 07:35:56,881+0200 INFO (jsonrpc/7) [vdsm.api]
        FINISH getAllTasksStatuses return={'allTasksStatus':
        {'87f95d85-cc3d-4f29-9883-a4dbb3808f88': {'code': 651,
        'message': 'Cannot obtain lock:
        "id=47b7c9aa-ef53-48bc-bb55-4a1a0ba5c8d5, rc=-227, out=Cannot
        acquire Lease(name=\'e156ac2e-09ac-4e1e-a139-17fa374a96d4\',
        path=\'/dev/47b7c9aa-ef53-48bc-bb55-4a1a0ba5c8d5/leases\',
        offset=115343360), err=(-227, \'Sanlock resource not
        acquired\', \'Lease resource name is incorrect\')"',
        'taskState': 'finished', 'taskResult': 'cleanSuccess',
        'taskID': '87f95d85-cc3d-4f29-9883-a4dbb3808f88'}}}
        from=::ffff:10.0.0.46,53136,
        task_id=d0e2f4e3-90cb-43c6-aa08-98d1f7efb1bd (api:52)


    The issue is corrupted lease for this volume:

    AcquireLockFailure: Cannot obtain lock:
    "id=47b7c9aa-ef53-48bc-bb55-4a1a0ba5c8d5, rc=-227, out=Cannot
    acquire Lease(name='e156ac2e-09ac-4e1e-a139-17fa374a96d4',
    path='/dev/47b7c9aa-ef53-48bc-bb55-4a1a0ba5c8d5/leases',
    offset=115343360), err=(-227, 'Sanlock resource not acquired',
    'Lease resource name is incorrect')"

    This root cause is faulty merge code in ovirt < 4.1, creating
    volume leases with
    incorrect name. These corrupted leases were not detected until
    you upgrade to
    ovirt >= 4.1, because we started to use volume leases for storage
    operations.

    The fix is to run

        vdsm-tool check-volume-leases

    This will check and repair corrupted leases.

    Adding Ala to add more info if needed.

    Nir


-- _______________________________________________________________________

    Enrico Becchetti                    Servizio di Calcolo e Reti

    Istituto Nazionale di Fisica Nucleare - Sezione di Perugia
    Via Pascoli,c/o Dipartimento di Fisica  06123 Perugia (ITALY)
    Phone:+39 075 5852777             Mail: Enrico.Becchetti<at>pg.infn.it 
<http://pg.infn.it>
    ______________________________________________________________________



--
_______________________________________________________________________

Enrico Becchetti                    Servizio di Calcolo e Reti

Istituto Nazionale di Fisica Nucleare - Sezione di Perugia
Via Pascoli,c/o Dipartimento di Fisica  06123 Perugia (ITALY)
Phone:+39 075 5852777             Mail: Enrico.Becchetti<at>pg.infn.it
______________________________________________________________________

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