[Linux-cluster] DLM - Lock Value Block error

Patrick Caulfield pcaulfie at redhat.com
Wed Sep 12 11:45:41 UTC 2007

Christos Triantafillou wrote:
> Hi,
> I am using RHEL 4.5 and DLM 1.0.3 on a 4-node cluster.
> I noticed the following regarding the LVB:
> 1. there are two processes: one that sets the LVB of a resource while
> holding an EX lock
> and another one that has a NL lock on the same resource and is blocked
> on a dlm_lock_wait
> for getting a CR lock and reading the LVB.
> 2. when the first process is interrupted with control-C or killed, the
> second process gets
> an invalid LVB error.
> It seems that DLM falsely releases the resource after the first process
> is gone and then
> the second process reads an uninitialized LVB.
> Can you please confirm this error and create a bug report if necessary?

I've just run the program on VMS and it exhibits exactly the same behaviour.

Therefore I suspect this is not a bug ;-)


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