From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josef Bacik Subject: Hang running fs_mark Date: Thu, 25 Sep 2008 13:56:44 -0400 Message-ID: <20080925175643.GA14205@unused.rdu.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: linux-btrfs@vger.kernel.org Return-path: List-ID: Hello, Reporting this on behalf of ric. He was running the following fs_mark command ./fs_mark -d /mnt/test -s 20480 -D 64 -t 8 -F Seems it hung and wasn't making any progress. He managed to get some sysrq-t, which is at http://people.redhat.com/jwhiter/fs-mark-hang.txt towards the bottom of the document. He could ctrl+c and unmount the fs so its not a hard hang. Looks like we've just locked up behind a page lock somewhere. I have to run off to class so I can't look into it too deeply so throwing this out there hoping somebody else figures it out :). Thanks, Josef