Re: reiserfs problem after usb hard drive disconnected

[Mateusz Berezecki]

Arnaud Boulan <arnaud.boulan@xxxxxxxxxxxxxx> wrote:
| Hello,
| 
| I am using an external USB hard drive, and i hit a bug in the reiserfs code 
| after the drive got disconnected by a power problem. You can see this in the 
| attached logs.
| The disconnection of the hard drive was not done manually, it has been 
| offlined "spontaneously" by what seems to be a power loss. In fact, i suspect 
| i have bad power at home since i have had other similar problems with another 
| device (an usb tv tuner)
| 
| However, i already have disconnected my drive manually a few times by mistake,
| and i always recovered from that by unmouting, running reiserfsck and 
| remounting the device.
| 
| This time, although i can consider it is a hardware problem, it would have 
| been nice if the kernel had also recovered from the USB problem. Instead, i 
| couldn't unmount the filesystem and the usb stack was stucked, leaving no 
| choice but to reboot...
| 

   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 (?) 


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

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