From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ig0-f178.google.com ([209.85.213.178]:38322 "EHLO mail-ig0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751679AbbILWv6 (ORCPT ); Sat, 12 Sep 2015 18:51:58 -0400 Received: by igxx6 with SMTP id x6so60938828igx.1 for ; Sat, 12 Sep 2015 15:51:57 -0700 (PDT) MIME-Version: 1.0 From: Martin Bakiev Date: Sat, 12 Sep 2015 16:51:18 -0600 Message-ID: Subject: Crash when trying to start a replace on missing device To: linux-btrfs@vger.kernel.org Content-Type: multipart/mixed; boundary=089e0122f016f62fd3051f94add7 Sender: linux-btrfs-owner@vger.kernel.org List-ID: --089e0122f016f62fd3051f94add7 Content-Type: text/plain; charset=UTF-8 Hi guys, I'm just doing testing with btrfs and I ran into a crash when simulating a failed drive. I yanked out one (/dev/sdc) of 4 drives and tried to replace it with another (/dev/sdf) with this command: btrfs replace start missing /dev/sdf /mount_point -f That seemed to cause a crash, you can check out the attached dmesg file for stack/more info. I was told to report the crash on from IRC. I hope this helps. Other info: uname -a: Linux fedora-nas 4.1.6-201.fc22.x86_64 #1 SMP Fri Sep 4 17:49:24 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux btrfs --version btrfs-progs v4.1 btrfs fi show Label: 'raid5' uuid: 8b17c1d2-4ef6-4946-b77f-eac57c4e23a6 Total devices 5 FS bytes used 18.32GiB devid 0 size 4.55TiB used 7.38GiB path /dev/sdf devid 1 size 4.55TiB used 7.38GiB path /dev/sdb devid 3 size 4.55TiB used 7.38GiB path /dev/sdd devid 4 size 4.55TiB used 7.38GiB path /dev/sde *** Some devices missing btrfs fi df Data, RAID5: total=21.00GiB, used=18.30GiB System, RAID5: total=96.00MiB, used=16.00KiB Metadata, RAID5: total=1.03GiB, used=19.59MiB GlobalReserve, single: total=16.00MiB, used=0.00B dmesg attached. Thanks, Martin --089e0122f016f62fd3051f94add7 Content-Type: text/plain; charset=US-ASCII; name="dmesg.txt" Content-Disposition: attachment; filename="dmesg.txt" Content-Transfer-Encoding: base64 X-Attachment-Id: f_ieho12zx0 WyA0ODk2LjEyMzEyNF0gQlRSRlM6IGRldl9yZXBsYWNlIGZyb20gPG1pc3NpbmcgZGlzaz4gKGRl dmlkIDUpIHRvIC9kZXYvc2RmIHN0YXJ0ZWQKWyA0ODk2LjM4MDI3M10gQlVHOiB1bmFibGUgdG8g aGFuZGxlIGtlcm5lbCBOVUxMIHBvaW50ZXIgZGVyZWZlcmVuY2UgYXQgMDAwMDAwMDAwMDAwMDA5 OApbIDQ4OTYuMzgwMzUxXSBJUDogWzxmZmZmZmZmZjgxMzc2NjUxPl0gYmlvX2FkZF9wYWdlKzB4 MTEvMHhhMApbIDQ4OTYuMzgwNDA0XSBQR0QgMjc0NTA2MDY3IFBVRCAyNzQ1MDcwNjcgUE1EIDAg ClsgNDg5Ni4zODA0NDldIE9vcHM6IDAwMDAgWyMxXSBTTVAgClsgNDg5Ni4zODA0ODFdIE1vZHVs ZXMgbGlua2VkIGluOiBpcDZ0X3JwZmlsdGVyIGlwNnRfUkVKRUNUIG5mX3JlamVjdF9pcHY2IHh0 X2Nvbm50cmFjayBlYnRhYmxlX25hdCBlYnRhYmxlX2Jyb3V0ZSBicmlkZ2Ugc3RwIGxsYyBlYnRh YmxlX2ZpbHRlciBlYnRhYmxlcyBpcDZ0YWJsZV9uYXQgbmZfY29ubnRyYWNrX2lwdjYgbmZfZGVm cmFnX2lwdjYgbmZfbmF0X2lwdjYgaXA2dGFibGVfbWFuZ2xlIGlwNnRhYmxlX3NlY3VyaXR5IGlw 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