Hello,
You’d need to use the `multipath` and `dmsetup` commands to figure out what
the multipath device there is still mapped to.
It might also help to see your /etc/multipath.conf configuration.
A couple of things regarding multipath/SCSI.
* Check sure you have a correct multipath.conf I’ve had issues many years ago with the blocklist statement there
* I have a vague memory that several years ago I had a one-byte error in my multipath.conf that caused issue I wonder if it was the `failback` config option
Best regards
Tobias
Hello.
I do filter as
I check and dont see any wrong mapping. I also set skip_kpartx "yes".
I still find a solution for it or atleast when resizing/migrating failed, my instance wont be set to ERROR state.
This problem happens only with iscsi.
The failure reminds me of the "well-known" problem caused by lvm.
I'd suggest that you check
- If instances which fails to be resized/migrated have lvm deployed in their volumes
- If these lvms on instance volumes are detected by host operating system
- If you configure appropriate lvm filter in your compute nodes to avoid host lvm system
from detecting lvms on devices for instance volumes.
https://docs.openstack.org/cinder/latest/install/cinder-storage-install-rdo.html#prerequisites
On 5/6/24 23:38, Nguyễn Hữu Khôi wrote:
> Hello.
>
> I am using Openstack Yoga with Dell Powerstore 5000T is backend.
>
> This is my report:
>
> https://bugs.launchpad.net/os-brick/+bug/2063345 <https://bugs.launchpad.net/os-brick/+bug/2063345>
>
> This bug is also with Victoria and NetApp as backend:
>
> https://bugs.launchpad.net/os-brick/+bug/1992289 <https://bugs.launchpad.net/os-brick/+bug/1992289>
>
> It looks like with iscsi multipath only. I don't see any reports with Ceph.
>
> I try to create problem but It is random when I do resize instance(instance will move to another compute-cold migrate)
>
> My log tells that
>
> 2022-10-04 10:50:12.238 7 ERROR oslo_messaging.rpc.server Command: multipath -f 3600a09803831486e695d536269665144
> 2022-10-04 10:50:12.238 7 ERROR oslo_messaging.rpc.server Exit code: 1
> 2022-10-04 10:50:12.238 7 ERROR oslo_messaging.rpc.server Stdout: ''
> 2022-10-04 10:50:12.238 7 ERROR oslo_messaging.rpc.server Stderr: 'Oct 04 10:49:32 | 3600a09803831486e695d536269665144: map in use\n
>
>
> Nguyen Huu Khoi
>
>
> On Mon, May 6, 2024 at 9:22 PM Eugen Block <eblock@nde.ag <mailto:eblock@nde.ag>> wrote:
>
> Hi,
>
> I think you'll need to be more specific here. Which openstack version
> are you running? Just recently I have been shuffling around instances
> with live and cold migration (in version Victoria, so quite old), some
> of them did fail but I didn't have to reset any state or
> shelve/unshelve instances. I can't recall if the instances were in
> ERROR state, though. I didn't need to check because after fixing
> whatever broke the migration I just issued another (live-)migrate
> command and then it worked.
> We use only ceph as backend for glance, nova and cinder, which
> backend(s) do you use? Maybe that has an impact as well, I don't know.
>
> Regards,
> Eugen
>
> Zitat von Nguyễn Hữu Khôi <nguyenhuukhoinw@gmail.com <mailto:nguyenhuukhoinw@gmail.com>>:
>
> > Hello.
> >
> > I would like to know why we set instance-state to ERROR when
> > resizing/migrating failed? I have a problem with resizing/migrating
> > instances. I must reset state then shelve and unshelve instances to make it
> > come back.
> >
> > Thank you for your time.
> >
> > Nguyen Huu Khoi
>
>
>