From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Mason Subject: Re: system crash at mounting of btrfs Date: Fri, 8 Oct 2010 13:16:35 -0400 Message-ID: <20101008171635.GS4804@think> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-btrfs@vger.kernel.org To: Gerhard Kulzer Return-path: In-Reply-To: List-ID: On Thu, Oct 07, 2010 at 02:12:33PM +0000, Gerhard Kulzer wrote: > I have a weird problem concerning 5 btrfs partitions on 3 different disks: > My system became slow and started to hang and go, so I shut it down and it > hang totally whilst shutting down. With the sysrq shortcut I could kill it > and restart. > > Booting didn't work any more throwing me into a shell at initramfs. Ok, I'd like to go through each of these btrfs partitions one at a time. > Here is a dmesg trace during booting from the CD, it not the crash yet. > > [ 7.782823] Btrfs loaded > [ 7.786081] xor: automatically using best checksumming function: pIII_sse > [ 7.804000] pIII_sse : 11626.000 MB/sec > [ 7.804001] xor: using function: pIII_sse (11626.000 MB/sec) > [ 7.805746] device-mapper: dm-raid45: initialized v0.2594b > [ 7.851186] device fsid 3a4b4bc6c07de70b-2b32b3df70d2459f devid 1 transid > 407064 /dev/sda2 > [ 7.881078] Btrfs detected SSD devices, enabling SSD mode > [ 7.923553] ------------[ cut here ]------------ > [ 7.923556] kernel BUG at /build/buildd/linux-2.6.35/fs/btrfs/tree-log.c:813! > [ 7.923558] invalid opcode: 0000 [#1] SMP ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Once you see kernel BUG() that's the crash ;) This isn't from the btrfs scan, this is from mounting the FS. Could you please mount the filesystems one at a time and see if they all fail or of it is just this one. -chris