From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josef Bacik Subject: Re: device failure hangs the system Date: Fri, 01 Jul 2011 16:14:37 -0400 Message-ID: <4E0E2AAD.1020406@redhat.com> References: <4E0D929E.7030704@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: linux-btrfs@vger.kernel.org To: Anand Jain Return-path: In-Reply-To: <4E0D929E.7030704@oracle.com> List-ID: On 07/01/2011 05:25 AM, Anand Jain wrote: > > hi, > > Following test case causes my remote system to hard-hang and does > not respond to any key strokes. > > ----------- > # btrfs fi show > failed to read /dev/sr0 > Label: none uuid: 75ad3c9f-f661-498e-8c13-89d4e4c58312 > Total devices 3 FS bytes used 28.00KB > devid 1 size 465.76GB used 2.02GB path /dev/sdb > devid 3 size 465.76GB used 2.01GB path /dev/sdd > devid 2 size 465.76GB used 1.01GB path /dev/sdc > > Btrfs v0.19-35-g1b444cd > ------------ > > > Stopping the disk > ------------ > # echo 1 > /sys/block/sdd/device/delete > ------------ Well that's a neat trick, do you have a way to undo that action too? Seems a rescan doesn't make it show back up. Please try the patch I just posted to the list to fix this problem. Thanks, Josef