linux-ext4 - Re: ext4: (2.6.34-rc4): This should not happen!! Data will be lost

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Date:	Thu, 22 Apr 2010 10:21:23 +0200
From:	Andre Noll <maan@...temlinux.org>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	Bernd Schubert <bernd.schubert@...tmail.fm>,
	Andrew Vasquez <andrew.vasquez@...gic.com>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	Linux Driver <Linux-Driver@...gic.com>,
	Thomas Helle <Helle@...bingen.mpg.de>
Subject: Re: ext4: (2.6.34-rc4): This should not happen!!  Data will be lost

On 19:46, Andre Noll wrote:
> > To be honest I'm not sure what I would do with the blktrace data now,
> > but perhaps someone might be interested to see it; I'd at least gather it.
> 
> OK, will send it tomorrow.

Here we go.

mount | grep sda:

        /dev/sda on /mnt type ext4 (ro,relatime,barrier=1,data=ordered)

command:

        ls stress.* | head -n 5 | xargs rm && stress -d 5 --hdd-noclean --hdd-bytes 10G

dmesg:

        EXT4-fs (sda): mounted filesystem with ordered data mode
        qla2xxx 0000:06:09.0: scsi(0:0:0): Abort command issued -- 1 2f82d1 2002.
        qla2xxx 0000:06:09.0: scsi(0:0:0): Abort command issued -- 1 2f82d3 2002.
        end_request: I/O error, dev sda, sector 7812689752
        Aborting journal on device sda-8.
        qla2xxx 0000:06:09.0: scsi(0:0:0): Abort command issued -- 1 2f82d8 2002.
        EXT4-fs (sda): delayed block allocation failed for inode 4198406 at logical offset 0 with max blocks 32768 with error -30

        This should not happen!!  Data will be lost
        EXT4-fs error (device sda) in ext4_da_writepages: Journal has aborted
        qla2xxx 0000:06:09.0: scsi(0:0:0): Abort command issued -- 1 2f82da 2002.
        qla2xxx 0000:06:09.0: scsi(0:0:0): Abort command issued -- 1 2f82db 2002.
        EXT4-fs (sda): delayed block allocation failed for inode 4198435 at logical offset 0 with max blocks 32768 with error -30

        This should not happen!!  Data will be lost
        EXT4-fs error (device sda): ext4_journal_start_sb: Detected aborted journal
        EXT4-fs (sda): Remounting filesystem read-only
        EXT4-fs (sda): ext4_da_writepages: jbd2_start: 32768 pages, ino 4198406; err -30

        EXT4-fs (sda): ext4_da_writepages: jbd2_start: 32768 pages, ino 4198435; err -30

        qla2xxx 0000:06:09.0: scsi(0:0:0): Abort command issued -- 1 2f82df 2002.
        EXT4-fs (sda): delayed block allocation failed for inode 4198433 at logical offset 0 with max blocks 32768 with error -30

        This should not happen!!  Data will be lost
        EXT4-fs (sda): delayed block allocation failed for inode 4198437 at logical offset 0 with max blocks 32768 with error -30

        This should not happen!!  Data will be lost
        EXT4-fs (sda): ext4_da_writepages: jbd2_start: 32768 pages, ino 4198433; err -30

        EXT4-fs (sda): ext4_da_writepages: jbd2_start: 32768 pages, ino 4198437; err -30

        qla2xxx 0000:06:09.0: scsi(0:0:0): Abort command issued -- 1 2f82e2 2002.
        ...

The output of "btrace /dev/sda" during the above command is 1.7M
large. It's at

        http://systemlinux.org/~maan/btrace.sda

I'll run further tests with barrier=0 and 60s timeout.

Thanks
Andre
-- 
The only person who always got his work done by Friday was Robinson Crusoe

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