From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Mason Subject: Re: Hang running fs_mark Date: Thu, 25 Sep 2008 14:37:02 -0400 Message-ID: <1222367822.7028.55.camel@think.oraclecorp.com> References: <20080925175643.GA14205@unused.rdu.redhat.com> Mime-Version: 1.0 Content-Type: text/plain Cc: linux-btrfs@vger.kernel.org To: Josef Bacik Return-path: In-Reply-To: <20080925175643.GA14205@unused.rdu.redhat.com> List-ID: On Thu, 2008-09-25 at 13:56 -0400, Josef Bacik wrote: > 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, Which kernel was this? -chris