[Cluster-devel] Bug on dlm

[Patrick Caulfield <pcaulfie@redhat.com>]

Jordi Prats wrote:
> Hi,
> I've found this while starting my server. It's a F7 with the latest
> version avaliable.
>
> Hope this helps :)
>
> Jordi
>
> Jul 26 23:52:51 inf18 kernel: dlm: rgmanager: recover 1
> Jul 26 23:52:51 inf18 kernel: dlm: rgmanager: add member 2
> Jul 26 23:52:51 inf18 kernel: dlm: rgmanager: total members 1 error 0
> Jul 26 23:52:51 inf18 kernel: dlm: rgmanager: dlm_recover_directory
> Jul 26 23:52:51 inf18 kernel: dlm: rgmanager: dlm_recover_directory 0
> entries
> Jul 26 23:52:51 inf18 kernel:
> Jul 26 23:52:51 inf18 kernel: =====================================
> Jul 26 23:52:51 inf18 kernel: [ BUG: bad unlock balance detected! ]
> Jul 26 23:52:51 inf18 kernel: -------------------------------------
> Jul 26 23:52:51 inf18 kernel: dlm_recoverd/2963 is trying to release
> lock (&ls->ls_in_recovery) at:
> Jul 26 23:52:51 inf18 kernel: [<ee67b874>] dlm_recoverd+0x265/0x433 [dlm]
> Jul 26 23:52:51 inf18 kernel: but there are no more locks to release!
> Jul 26 23:52:51 inf18 kernel:

Yeah, we know about it. It's not actually a bug, just the lockdep checking code
being a little over-enthusiastic. Unfortunately there aren't any annotations
available to make it quiet either.

The trick is to live with it, or to use kernels that have a little less
debugging compiled in, which you would want to do for production anyway :)


Patrick