On =3D Jun 17, 2016, at 11:41 AM, Fabrice Bacchella <fabrice.bacchella(a)icloud.com> wrote:

I'm running an = =3D up to date ovirt setup.

I tried to put an host in maintenance mode, with one VM =3D running on it.

It failed with this message in vdsm.log:

Thread-351083::ERROR::2016-06-17 =3D 11:30:04,732::migration::209::virt.vm::(_recover) =3D vmId=3D3D`b82209c9-42ff-457c-bb98-b6a2034833fc`::internal error: process = =3D exited while connecting to monitor: 2016-06-17T09:30:04.429323Z =3D qemu-kvm: -chardev =3D socket,id=3D3Dcharchannel0,path=3D3D/var/lib/libvirt/qemu/channels/b82209c9= -42=3D ff-457c-bb98-b6a2034833fc.com.redhat.rhevm.vdsm,server,nowait: Failed to = =3D bind socket to =3D /var/lib/libvirt/qemu/channels/b82209c9-42ff-457c-bb98-b6a2034833fc.com.re= =3D dhat.rhevm.vdsm: Permission denied
...
Traceback (most recent call last):
File "/usr/share/vdsm/virt/migration.py", line 298, in = =3D run
=3D self._startUnderlyingMigration(time.time())
File "/usr/share/vdsm/virt/migration.py", line 364, in = =3D _startUnderlyingMigration
=3D self._perform_migration(duri, muri)
File =3D "/usr/share/vdsm/virt/migration.py", line 403, in =3D _perform_migration
=3D self._vm._dom.migrateToURI3(duri, params, flags)
File "/usr/share/vdsm/virt/virdomain.py", line 68, in = =3D f
ret =3D3D attr(*args, =3D **kwargs)
File =3D "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", line 124, =3D in wrapper
ret =3D3D f(*args, = =3D **kwargs)
File =3D "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 1313, in =3D wrapper
return func(inst, = =3D *args, **kwargs)
File =3D "/usr/lib64/python2.7/site-packages/libvirt.py", line 1836, in =3D migrateToURI3
if ret =3D3D=3D3D -= 1: =3D raise libvirtError ('virDomainMigrateToURI3() failed', =3D dom=3D3Dself)
libvirtError: internal error: =3D process exited while connecting to monitor: 2016-06-17T09:30:04.429323Z =3D qemu-kvm: -chardev =3D socket,id=3D3Dcharchannel0,path=3D3D/var/lib/libvirt/qemu/channels/b82209c9= -42=3D ff-457c-bb98-b6a2034833fc.com.redhat.rhevm.vdsm,server,nowait: Failed to = =3D bind socket to =3D /var/lib/libvirt/qemu/channels/b82209c9-42ff-457c-bb98-b6a2034833fc.com.re= =3D dhat.rhevm.vdsm: Permission =3D denied

This is pretty odd, could you please send me the = =3D out put of this:

# rpm -qa | grep =3D vdsm

=3D46rom the target and =3D destination hosts. Thanks.

If = i =3D check the file, I see :

srwxrwxr-x 1 qemu qemu 0 May 31 = =3D 16:21 =3D /var/lib/libvirt/qemu/channels/b82209c9-42ff-457c-bb98-b6a2034833fc.com.re= =3D dhat.rhevm.vdsm

And=3D on all my hosts, the permissions are the same:
srwxrwxr-x 1 qemu =3D qemu /var/lib/libvirt/qemu/channels/*

And vdsm is running =3D vdsm:
4 S vdsm 3816 1 =3D 0 60 -20 - 947345 poll_s May25 ? 02:21:58 =3D /usr/bin/python /usr/share/vdsm/vdsm

If I check vdsm groups:
~# id vdsm
uid=3D3D36(vdsm) gid=3D3D36(kvm) =3D groups=3D3D36(kvm),179(sanlock),107(qemu)

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