Re: Sanlock gives up lock when VM is paused

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Just for follow up and future reference:

https://bugzilla.redhat.com/show_bug.cgi?id=906590

Thanks,
Michael

On 1/31/2013 12:03 PM, Daniel P. Berrange wrote:
On Thu, Jan 31, 2013 at 11:02:15AM -0800, Michael Rodrigues wrote:
On 1/31/2013 10:40 AM, Daniel P. Berrange wrote:
On Thu, Jan 31, 2013 at 10:35:17AM -0800, Michael Rodrigues wrote:
Hi Daniel,

I thought migration might be the reason, but I'm still not seeing
the behavior you describe with regards to pausing. I saw the
following behavior:

1. Created VM on node 1
2. Started VM on node 1
3. Migrated VM to node 2, node 1 is now shutdown, node 2 is running
4. I paused node 2
5. I started node 1, no error
6. Paused node 1
7. Unpaused node 2, no err

I thought maybe the original VM had to be paused first, so I tried
that as well:

1. Created VM on node 1
2. Started VM on node 1
3. Migrated to node 2, node 1 is now shutdown, node 2 is running
4. I shutdown node 2 instead of pausing
5. I started node 1
6. I paused node 1
7. Started node 2
8. Paused node 2
9. Started node 1
Hmm, that isn't supposed to be possible. When you paused node 1
in step 6, it was supposed to record the lease version number.
When you resume in step 9, the version number should mis-match
due to step 7, and thus sandlock ought to have caused an error
at step 9. If that didn't happen, then I believe we have a bug
Should I file a report? I'm not really a developer but I can provide
whatever information is necessary for a proper report. I don't have
RHEL or a bugzilla account.
Yes, please do file a bug report including this scenario to
reproduce

Daniel


--
Michael Rodrigues
Interim Help Desk Manager
Gevirtz Graduate School of Education
Education Building 4203
(805) 893-8031
help@xxxxxxxxxxxxxxxxxx

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