[ovirt-users] Re: VM hangs after migration

2022-06-28 Thread Christopher Law
Looks like the suggested workaround is to downgrade the kernel. Easier said 
than done when using the oVirt Node ISO minimal installs, the downgrade path is 
more challenging.


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From: Arik Hadas 
Sent: Monday, June 27, 2022 7:27:54 AM
To: John ; users 
Subject: [ovirt-users] Re: VM hangs after migration

FYI, this has been reported to the kernel/virtualization team, you can follow 
this bz:
https://bugzilla.redhat.com/show_bug.cgi?id=2079311

On Mon, Jun 27, 2022 at 1:55 AM John 
mailto:jmru...@gmail.com>> wrote:

I'm seeing this too on oVirt 4.5.1 using CentOS Stream 8 for the hosts. The 
console is blank, no response to ping and I have to power off the VM and power 
it back on again to recover it.

On 26/06/2022 19:53, Christopher Law wrote:

I have this exact same issue, did you guys get anywhere with this, or find the 
cause?



It’s difficult to debug because as far as the engine and hosts involved are 
concerned it was successful. It’s just the VM stops responding to pings etc 
after migration and the console freezes exactly as described here.



I’m using oVirt 4.5.1 Cluster 4.7. I’ve even reinstalled oVirt Node on the 
problem host still behaves the same. I’ve tried removing all VirtIO devices 
from the VM, I’ve tried with lower CPU family profiles, I’ve tried with 
different BIOS/UEFI settings.



In some cases the VM freezes moving away from the problem host as well which is 
interesting.



From: Arik Hadas <mailto:aha...@redhat.com>
Sent: 31 March 2022 15:11
To: Moshe Sheena <mailto:mshe...@redhat.com>
Cc: users <mailto:users@ovirt.org>
Subject: [ovirt-users] Re: VM hangs after migration



Moshe, this sounds similar to what we've seen in your environment, no?

Did you manage to resolve it?



On Thu, Mar 31, 2022 at 12:57 PM Giorgio Biacchi 
mailto:gior...@di.unimi.it>> wrote:

Hi,
I have a fresh Ovirt installation (4.4.10.7-1.el8 engine and oVirt Node
4.4.10) on a Dell VRTX chassis. There are 3 blades, two of them are
identical hardware (PowerEdge M630) and the third is a little newer
(PowerEdge M640). The third has different CPUs, more RAM, and slower
NICs. I also have a bunch of data domains some on the shared PERC
internal storage and others on an external iSCSI storage, all seems
configured correctly and all the hosts are operational.

I can migrate a VM back and forth from the first two blades without any
problem, I can migrate a VM to the third blade but when I migrate a VM
from the third blade to any of the other two the task terminate
successfully, the VM is marked as up on the target host but the VM
hangs, the console is frozen and the VM stops to respond to ping.

I have no clues about why this is happening and I'm looking for
suggestions about how to debug and hopefully fix this issue.

Thanks in advance
--
gb

PGP Key: http://pgp.mit.edu/
Primary key fingerprint: C510 0765 943E EBED A4F2 69D3 16CC DC90 B9CB 0F34
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[ovirt-users] Re: VM hangs after migration

2022-06-27 Thread Arik Hadas
FYI, this has been reported to the kernel/virtualization team, you can
follow this bz:
https://bugzilla.redhat.com/show_bug.cgi?id=2079311

On Mon, Jun 27, 2022 at 1:55 AM John  wrote:

> I'm seeing this too on oVirt 4.5.1 using CentOS Stream 8 for the hosts.
> The console is blank, no response to ping and I have to power off the VM
> and power it back on again to recover it.
> On 26/06/2022 19:53, Christopher Law wrote:
>
> I have this exact same issue, did you guys get anywhere with this, or find
> the cause?
>
>
>
> It’s difficult to debug because as far as the engine and hosts involved
> are concerned it was successful. It’s just the VM stops responding to pings
> etc after migration and the console freezes exactly as described here.
>
>
>
> I’m using oVirt 4.5.1 Cluster 4.7. I’ve even reinstalled oVirt Node on the
> problem host still behaves the same. I’ve tried removing all VirtIO devices
> from the VM, I’ve tried with lower CPU family profiles, I’ve tried with
> different BIOS/UEFI settings.
>
>
>
> In some cases the VM freezes moving away from the problem host as well
> which is interesting.
>
>
>
> *From:* Arik Hadas  
> *Sent:* 31 March 2022 15:11
> *To:* Moshe Sheena  
> *Cc:* users  
> *Subject:* [ovirt-users] Re: VM hangs after migration
>
>
>
> Moshe, this sounds similar to what we've seen in your environment, no?
>
> Did you manage to resolve it?
>
>
>
> On Thu, Mar 31, 2022 at 12:57 PM Giorgio Biacchi 
> wrote:
>
> Hi,
> I have a fresh Ovirt installation (4.4.10.7-1.el8 engine and oVirt Node
> 4.4.10) on a Dell VRTX chassis. There are 3 blades, two of them are
> identical hardware (PowerEdge M630) and the third is a little newer
> (PowerEdge M640). The third has different CPUs, more RAM, and slower
> NICs. I also have a bunch of data domains some on the shared PERC
> internal storage and others on an external iSCSI storage, all seems
> configured correctly and all the hosts are operational.
>
> I can migrate a VM back and forth from the first two blades without any
> problem, I can migrate a VM to the third blade but when I migrate a VM
> from the third blade to any of the other two the task terminate
> successfully, the VM is marked as up on the target host but the VM
> hangs, the console is frozen and the VM stops to respond to ping.
>
> I have no clues about why this is happening and I'm looking for
> suggestions about how to debug and hopefully fix this issue.
>
> Thanks in advance
> --
> gb
>
> PGP Key: http://pgp.mit.edu/
> Primary key fingerprint: C510 0765 943E EBED A4F2 69D3 16CC DC90 B9CB 0F34
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[ovirt-users] Re: VM hangs after migration

2022-06-26 Thread John
I'm seeing this too on oVirt 4.5.1 using CentOS Stream 8 for the hosts. 
The console is blank, no response to ping and I have to power off the VM 
and power it back on again to recover it.


On 26/06/2022 19:53, Christopher Law wrote:


I have this exact same issue, did you guys get anywhere with this, or 
find the cause?


It’s difficult to debug because as far as the engine and hosts 
involved are concerned it was successful. It’s just the VM stops 
responding to pings etc after migration and the console freezes 
exactly as described here.


I’m using oVirt 4.5.1 Cluster 4.7. I’ve even reinstalled oVirt Node on 
the problem host still behaves the same. I’ve tried removing all 
VirtIO devices from the VM, I’ve tried with lower CPU family profiles, 
I’ve tried with different BIOS/UEFI settings.


In some cases the VM freezes moving away from the problem host as well 
which is interesting.


*From:*Arik Hadas 
*Sent:* 31 March 2022 15:11
*To:* Moshe Sheena 
*Cc:* users 
*Subject:* [ovirt-users] Re: VM hangs after migration

Moshe, this sounds similar to what we've seen in your environment, no?

Did you manage to resolve it?

On Thu, Mar 31, 2022 at 12:57 PM Giorgio Biacchi  
wrote:


Hi,
I have a fresh Ovirt installation (4.4.10.7-1.el8 engine and oVirt
Node
4.4.10) on a Dell VRTX chassis. There are 3 blades, two of them are
identical hardware (PowerEdge M630) and the third is a little newer
(PowerEdge M640). The third has different CPUs, more RAM, and slower
NICs. I also have a bunch of data domains some on the shared PERC
internal storage and others on an external iSCSI storage, all seems
configured correctly and all the hosts are operational.

I can migrate a VM back and forth from the first two blades
without any
problem, I can migrate a VM to the third blade but when I migrate
a VM
from the third blade to any of the other two the task terminate
successfully, the VM is marked as up on the target host but the VM
hangs, the console is frozen and the VM stops to respond to ping.

I have no clues about why this is happening and I'm looking for
suggestions about how to debug and hopefully fix this issue.

Thanks in advance
-- 
gb


PGP Key: http://pgp.mit.edu/
Primary key fingerprint: C510 0765 943E EBED A4F2 69D3 16CC DC90
B9CB 0F34
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[ovirt-users] Re: VM hangs after migration

2022-06-26 Thread Christopher Law
I have this exact same issue, did you guys get anywhere with this, or find the 
cause?

It’s difficult to debug because as far as the engine and hosts involved are 
concerned it was successful. It’s just the VM stops responding to pings etc 
after migration and the console freezes exactly as described here.

I’m using oVirt 4.5.1 Cluster 4.7. I’ve even reinstalled oVirt Node on the 
problem host still behaves the same. I’ve tried removing all VirtIO devices 
from the VM, I’ve tried with lower CPU family profiles, I’ve tried with 
different BIOS/UEFI settings.

In some cases the VM freezes moving away from the problem host as well which is 
interesting.

From: Arik Hadas 
Sent: 31 March 2022 15:11
To: Moshe Sheena 
Cc: users 
Subject: [ovirt-users] Re: VM hangs after migration

Moshe, this sounds similar to what we've seen in your environment, no?
Did you manage to resolve it?

On Thu, Mar 31, 2022 at 12:57 PM Giorgio Biacchi 
mailto:gior...@di.unimi.it>> wrote:
Hi,
I have a fresh Ovirt installation (4.4.10.7-1.el8 engine and oVirt Node
4.4.10) on a Dell VRTX chassis. There are 3 blades, two of them are
identical hardware (PowerEdge M630) and the third is a little newer
(PowerEdge M640). The third has different CPUs, more RAM, and slower
NICs. I also have a bunch of data domains some on the shared PERC
internal storage and others on an external iSCSI storage, all seems
configured correctly and all the hosts are operational.

I can migrate a VM back and forth from the first two blades without any
problem, I can migrate a VM to the third blade but when I migrate a VM
from the third blade to any of the other two the task terminate
successfully, the VM is marked as up on the target host but the VM
hangs, the console is frozen and the VM stops to respond to ping.

I have no clues about why this is happening and I'm looking for
suggestions about how to debug and hopefully fix this issue.

Thanks in advance
--
gb

PGP Key: http://pgp.mit.edu/
Primary key fingerprint: C510 0765 943E EBED A4F2 69D3 16CC DC90 B9CB 0F34
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[ovirt-users] Re: VM hangs after migration

2022-03-31 Thread Arik Hadas
Moshe, this sounds similar to what we've seen in your environment, no?
Did you manage to resolve it?

On Thu, Mar 31, 2022 at 12:57 PM Giorgio Biacchi 
wrote:

> Hi,
> I have a fresh Ovirt installation (4.4.10.7-1.el8 engine and oVirt Node
> 4.4.10) on a Dell VRTX chassis. There are 3 blades, two of them are
> identical hardware (PowerEdge M630) and the third is a little newer
> (PowerEdge M640). The third has different CPUs, more RAM, and slower
> NICs. I also have a bunch of data domains some on the shared PERC
> internal storage and others on an external iSCSI storage, all seems
> configured correctly and all the hosts are operational.
>
> I can migrate a VM back and forth from the first two blades without any
> problem, I can migrate a VM to the third blade but when I migrate a VM
> from the third blade to any of the other two the task terminate
> successfully, the VM is marked as up on the target host but the VM
> hangs, the console is frozen and the VM stops to respond to ping.
>
> I have no clues about why this is happening and I'm looking for
> suggestions about how to debug and hopefully fix this issue.
>
> Thanks in advance
> --
> gb
>
> PGP Key: http://pgp.mit.edu/
> Primary key fingerprint: C510 0765 943E EBED A4F2 69D3 16CC DC90 B9CB 0F34
> ___
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