From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Teigland Date: Mon, 27 Aug 2012 10:28:06 -0400 Subject: [Cluster-devel] tasks of dlm_recoverd? In-Reply-To: <503B5D5A.7030409@itechnical.de> References: <503B5D5A.7030409@itechnical.de> Message-ID: <20120827142806.GA13752@redhat.com> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Mon, Aug 27, 2012 at 01:43:22PM +0200, Heiko Nardmann wrote: > Hi together! > > During the shutdown of my second cluster node (two node cluster) I > have seen a process 'dlm_recoverd' running with 100% CPU usage for > about 6 minutes. > > It's just that I have no idea what is the task of this process since > I haven't been able to find the binary nor a man page for it. Is > this one coming from the kernel or from one of the cluster > components? > > Can anyone point me into the right direction? Googling hasn't been > helpful either ... It's a kernel thread, and it's doing lock recovery. There have been some recent improvements to speed up recovery for millions of locks, e.g. http://git.kernel.org/gitweb.cgi?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=7210cb7a72a22303cdb225bd1aea28697a17bbae