[ovirt-users] Cannot Migrate Hosted Engine

Thu Nov 17 08:59:21 UTC 2016

On Thu, Nov 17, 2016 at 8:28 AM, Michal Skrivanek <
michal.skrivanek at redhat.com> wrote:

>
> On 27 Oct 2016, at 15:54, knarra <knarra at redhat.com> wrote:
>
> Hi,
>
>     I have installed latest upstream master on RHEL7.2. When i try to put
> a host in maintenance which runs HE vm i see that vm does not get migrated
> to another host and host is stuck in "preparing for maintenace" state. I
> see the following errors in the vdsm.log . Can you please help me
> understand why this error is seen?
>
>
> seems to be caused by OVS hook issue
> update to latest and try again, if it’s still not working remove the ovs
> hook(s)
>

This VM was created in a version that was missing the graphics parameter,
so I do not think an upgrade will help.
Maybe shutting down the VM after the system upgrade may help, but that is
not always practical.

The patch that aimed to fix this is this: https://gerrit.ovirt.org/#/c/64300
Unfortunately it is stuck on review.

>
>    1. 2016-10-27 16:40:22,742 ERROR (Thread-3293) [virt.vm]
>    (vmId='21e0e248-19bf-47b3-b72f-6a3740d9ff43') Hook script execution
>    failed: internal error: Child process (LC_ALL=C PAT
>    2. H=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
>    /etc/libvirt/hooks/qemu HostedEngine migrate begin -) unexpected exit
>    status 1: Traceback (most recent call last):
>    3.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 51, in main
>    4.     _process_domxml(tree)
>    5.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 80, in
>    _process_domxml
>    6.     _set_graphics(devices, target_vm_conf)
>    7.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 156, in
>    _set_graphics
>    8.     target_display_network, target_display_ip =
>    _vmconf_display(target_vm_conf)
>    9.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 177, in
>    _vmconf_display
>    10.     raise VmMigrationHookError('VM conf graphics not detected')
>    11. VmMigrationHookError: VM conf graphics not detected
>    12. Traceback (most recent call last):
>    13.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 201, in
>    <module>
>    14.     main(*sys.argv[1:])
>    15.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 51, in main
>    16.     _process_domxml(tree)
>    17.   File "/usr/libexec/vdsm/vm_migrate_hoo (migration:261)
>    18. 2016-10-27 16:40:22,757 ERROR (Thread-3293) [virt.vm]
>    (vmId='21e0e248-19bf-47b3-b72f-6a3740d9ff43') Failed to migrate
>    (migration:390)
>    19. Traceback (most recent call last):
>    20.   File "/usr/share/vdsm/virt/migration.py", line 372, in run
>    21.     self._startUnderlyingMigration(time.time())
>    22.   File "/usr/share/vdsm/virt/migration.py", line 447, in
>    _startUnderlyingMigration
>    23.     self._perform_with_downtime_thread(duri, muri)
>    24.   File "/usr/share/vdsm/virt/migration.py", line 498, in
>    _perform_with_downtime_thread
>    25.     self._perform_migration(duri, muri)
>    26.   File "/usr/share/vdsm/virt/migration.py", line 485, in
>    _perform_migration
>    27.     self._vm._dom.migrateToURI3(duri, params, flags)
>    28.   File "/usr/lib/python2.7/site-packages/vdsm/virt/virdomain.py",
>    line 69, in f
>    29.     ret = attr(*args, **kwargs)
>    30.   File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py",
>    line 123, in wrapper
>    31.     ret = f(*args, **kwargs)
>    32.   File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 899,
>    in wrapper
>    33.     return func(inst, *args, **kwargs)
>    34.   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1836,
>    in migrateToURI3
>    35. :
>    36.     if ret == -1: raise libvirtError ('virDomainMigrateToURI3()
>    failed', dom=self)
>    37. libvirtError: Hook script execution failed: internal error: Child
>    process (LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
>    /etc/libvirt/hooks/qemu HostedEngine migrate begin -) unexpected exit
>    status 1: Traceback (most recent call last):
>    38.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 51, in main
>    39.     _process_domxml(tree)
>    40.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 80, in
>    _process_domxml
>    41.     _set_graphics(devices, target_vm_conf)
>    42.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 156, in
>    _set_graphics
>    43.     target_display_network, target_display_ip =
>    _vmconf_display(target_vm_conf)
>    44.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 177, in
>    _vmconf_display
>    45.     raise VmMigrationHookError('VM conf graphics not detected')
>    46. VmMigrationHookError: VM conf graphics not detected
>    47. Traceback (most recent call last):
>    48.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 201, in
>    <module>
>    49.     main(*sys.argv[1:])
>    50.   File "/usr/libexec/vdsm/vm_migrate_hook.py", line 51, in main
>    51.     _process_domxml(tree)
>    52.   File "/usr/libexec/vdsm/vm_migrate_hoo
>
> Thanks
>
> kasturi.
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