From mboxrd@z Thu Jan 1 00:00:00 1970 From: Coly Li Date: Tue, 15 Sep 2009 15:11:32 +0800 Subject: [Ocfs2-devel] dlm stress test hangs OCFS2 In-Reply-To: <4AAED882.9020601@oracle.com> References: <4A8B0083.8030400@suse.de> <4A8B6C29.30802@oracle.com> <4A9EA759.5090906@suse.de> <4A9EEB26.2080204@oracle.com> <4A9FEDA8.3080108@suse.de> <4A9FEDAC.50704@oracle.com> <4AA80AE4.9090105@suse.de> <4AA82136.9000403@oracle.com> <4AA890ED.3040406@suse.de> <4AAAD5C6.4000800@oracle.com> <4AACFCEB.4060902@suse.de> <4AAE99DF.3030005@oracle.com> <4AAEA64C.3030607@suse.de> <4AAED882.9020601@oracle.com> Message-ID: <4AAF3E24.9050207@suse.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ocfs2-devel@oss.oracle.com Sunil Mushran Wrote: > The full trace is available here. > http://oss.oracle.com/~smushran/calltrace_x1 > > So one sees the following block repeated. It shows that the lock is > being downconverted from EX to NL but also upconverted presumably to EX. > > > Coli, Can you map the pids to the process names. > Hi Sunil, In the attached trace info, I add current->comm after the pid. Here is the steps I reproduce the blocking, - This time I only run 1 make_panic process on each node. - I ran make_panic on x1 firstly, then on x2. - On node x1, after creating 3-4 files, I start the make_panic script on node x2. - On node x2, make_panic blocked immediately, no file created. On node x1, after creating 13 files, make_panic blocked too. - After waiting for several minutes, still blocked. I stop gathering trace info. Please check the attachment. Thank. -- Coly Li SuSE Labs -------------- next part -------------- A non-text attachment was scrubbed... Name: calltrace_x1.bz2 Type: application/x-bzip Size: 46329 bytes Desc: not available Url : http://oss.oracle.com/pipermail/ocfs2-devel/attachments/20090915/f528a475/attachment-0002.bin -------------- next part -------------- A non-text attachment was scrubbed... Name: calltrace_x2.bz2 Type: application/x-bzip Size: 44701 bytes Desc: not available Url : http://oss.oracle.com/pipermail/ocfs2-devel/attachments/20090915/f528a475/attachment-0003.bin