From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerhard Kulzer Subject: Re: system crash at mounting of btrfs Date: Sat, 9 Oct 2010 13:08:40 +0000 (UTC) Message-ID: References: <20101008171635.GS4804@think> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: linux-btrfs@vger.kernel.org Return-path: List-ID: Gerhard Kulzer kulzer.net> writes: > > Chris Mason oracle.com> writes: > > > > [ 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 > > -- > Ahh big surprise, I can mount my other btrfs partitions (4 on 2 HDD) all of a > sudden. > I wonder why, because I tried before and I got a crash with all of them. > The only difference now is that I took the SSD with the 5th partition out. > I have a boot partition as ext4 on that same SSD drive which I can mount > w/o problems. So I think it's not the SSD itself that is buggy. > Ok, I understand a bit more now. a) when I boot my system from CD and the faulty SSD btrfs is physically present, then there's a little hick-up during boot resulting in my first trace and the system crashes if I subsequently mount ANY other btrfs partition. b) If I boot w/o the SSD, then there is no hick-up and I can mount all remaining btrfs partitions w/o crash and the data is there. Gerhard