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Date: Fri, 23 Sep 2005 23:40:57 +0200
From: Mateusz Berezecki <mateuszb@gmail.com>
To: Arnaud Boulan <arnaud.boulan@libertysurf.fr>
Cc: linux-kernel@vger.kernel.org
Subject: Re: reiserfs problem after usb hard drive disconnected
Message-ID: <20050923214057.GA15047@pc2>
Reply-To: Mateusz Berezecki <mateuszb@gmail.com>
Mail-Followup-To: Arnaud Boulan <arnaud.boulan@libertysurf.fr>,
	linux-kernel@vger.kernel.org
References: <200509232121.52803.arnaud.boulan@libertysurf.fr>
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Arnaud Boulan <arnaud.boulan@libertysurf.fr> wrote:
| Hello,
|=20
| I am using an external USB hard drive, and i hit a bug in the reiserfs co=
de=20
| after the drive got disconnected by a power problem. You can see this in =
the=20
| attached logs.
| The disconnection of the hard drive was not done manually, it has been=20
| offlined "spontaneously" by what seems to be a power loss. In fact, i sus=
pect=20
| i have bad power at home since i have had other similar problems with ano=
ther=20
| device (an usb tv tuner)
|=20
| However, i already have disconnected my drive manually a few times by mis=
take,
| and i always recovered from that by unmouting, running reiserfsck and=20
| remounting the device.
|=20
| This time, although i can consider it is a hardware problem, it would hav=
e=20
| been nice if the kernel had also recovered from the USB problem. Instead,=
 i=20
| couldn't unmount the filesystem and the usb stack was stucked, leaving no=
=20
| choice but to reboot...
|=20

   Same problem here. Power went down and I had no other choice than to
   reboot. FS(ext3) got recovered almost completely but some page
   writes were lost. I were unable to unmount the disk too. I guess this
   is more a usb storage problem than a fs one (?)=20


Sep 22 09:57:46 pc2 kernel: scsi0 (0:0): rejecting I/O to dead device
Sep 22 09:57:46 pc2 kernel: Buffer I/O error on device sda1, logical
block 24884044
Sep 22 09:57:46 pc2 kernel: lost page write due to I/O error on sda1
Sep 22 09:57:46 pc2 kernel: scsi0 (0:0): rejecting I/O to dead device
Sep 22 09:57:46 pc2 kernel: journal_bmap: journal block not found at
offset 3144 on sda1
Sep 22 09:57:46 pc2 kernel: Aborting journal on device sda1.
Sep 22 09:57:46 pc2 kernel: scsi0 (0:0): rejecting I/O to dead device
Sep 22 09:57:46 pc2 kernel: Buffer I/O error on device sda1, logical
block 527
Sep 22 09:57:46 pc2 kernel: lost page write due to I/O error on sda1
Sep 22 09:58:13 pc2 kernel: ext3_abort called.
Sep 22 09:58:13 pc2 kernel: EXT3-fs error (device sda1):
ext3_journal_start_sb: Detected aborted journal
Sep 22 09:58:13 pc2 kernel: Remounting filesystem read-only


 Mateusz

--=20
  @..@   Mateusz Berezecki=20
 (----)  mateuszb@gmail.com http://mateusz.agrest.org
( >__< ) PGP: 5F1C 86DF 89DB BFE9 899E 8CBE EB60 B7A7 43F9 5808=20
^^ ~~ ^^

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