[Debian-ha-maintainers] Bug#691749: dlm: dev_write no op

[Etienne Bagnoud]

On 30. 10. 12 00:17, Jonathan Nieder wrote:
> Hi Etienne,
>
> Etienne Bagnoud wrote:
>
>> The bug described there https://lists.launchpad.net/ubuntu-ha/msg01558.html is also
>> present in current Debian Wheezy kernel (I think it's a kernel bug).
>> The problem arise when running CTDB over OCFS2 filesystem with DRBD, log are
>> spammed with "dlm: dev_write no op ...".
> [...]
>> ** Kernel log:
>> [61147.256772] dlm: dev_write no op a496cdc8 f4202
>> [61148.254552] dlm: dev_write no op a496cdc8 f4202
>> [61149.252208] dlm: dev_write no op a496cdc8 f4202
> Sounds like<https://bugzilla.redhat.com/731775>, which had the
> following summary:
>
> | Cause: the patch for bug 678585 was incomplete.  dlm_controld was
> | still passing error results back to the kernel for posix unlock
> | operations flagged with CLOSE.
> |
> | Consequence: the kernel complains if it receives a posix lock result
> | that it is not expecting: "dev_write no op ...".  Many of these can
> | appear, especially when using flocks (not posix locks).
> |
> | Fix: dlm_controld is fixed to not pass error results to the kernel
> | for posix unlock operations flagged with CLOSE.
> |
> | Result: No "dev_write no op" messages should appear.
>
> The fix seems to be present in redhat-cluster/unstable and not in
> squeeze or wheezy.  Can you confirm?

I tried the same setup with unstable and saw no error, so it should be ok

Thanks,
Etienne.