Messages in this thread | | | Date | Sat, 02 Jul 2005 16:14:02 +0200 | From | matthieu castet <> | Subject | ide-cd and bad sectors |
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Hi,
I use 2.6.12 vanilla kernel.
Since some time when a disk has bad sector because it is damaged or overburned, the Linux kernel seem too hang for this device : the process reading is unkillable (even with SIGKILL). the kernel seem to try to read the next sectors, but always failed.
The only way to stop the kernel trying to read the disc is to reboot or don't lock the drive and eject it, with the button on the device.
When hard-ejecting it, there are something strange in the log : the kernel failed for 508 sector (is there a so big cache for disk request ? If this is the case that explain why the kernel seem too hang as it need 1-2s per bad sector). Also at the end of the log [1] you could see that the 2 last message report error for the first sectors that produce the error. Is that normal : I thought this sector already produced an "media error (bad sector)" and should be skipped ?
Also I was wondering if all the sector that ide-cd failed to read are bad sector, or if ide-cd failed to put the drive in a consistent state for reading the next sector after corrupted one.
IIRC on 2.4 kernel there wasn't such problem, I even managed to recover some damaged disk...
thanks
Matthieu
[1] Jul 2 15:10:13 localhost kernel: hdc: media error (bad sector): status=0x51 { D riveReady SeekComplete Error } Jul 2 15:10:13 localhost kernel: hdc: media error (bad sector): error=0x30 { La stFailedSense=0x03 } Jul 2 15:10:13 localhost kernel: ide: failed opcode was: unknown Jul 2 15:10:13 localhost kernel: end_request: I/O error, dev hdc, sector 119095 12 Jul 2 15:10:13 localhost kernel: printk: 105 messages suppressed. Jul 2 15:10:13 localhost kernel: Buffer I/O error on device hdc, logical block 2977378 Jul 2 15:10:17 localhost kernel: hdc: media error (bad sector): status=0x51 { D riveReady SeekComplete Error } Jul 2 15:10:17 localhost kernel: hdc: media error (bad sector): error=0x30 { La stFailedSense=0x03 } Jul 2 15:10:17 localhost kernel: ide: failed opcode was: unknown Jul 2 15:10:17 localhost kernel: end_request: I/O error, dev hdc, sector 119095 16 [...] Jul 2 15:12:03 localhost kernel: hdc: tray open Jul 2 15:12:03 localhost kernel: end_request: I/O error, dev hdc, sector 119100 16 Jul 2 15:12:03 localhost kernel: hdc: tray open Jul 2 15:12:03 localhost kernel: end_request: I/O error, dev hdc, sector 119100 20 Jul 2 15:12:03 localhost kernel: hdc: tray open Jul 2 15:12:03 localhost kernel: end_request: I/O error, dev hdc, sector 119095 12 Jul 2 15:12:03 localhost kernel: hdc: tray open Jul 2 15:12:03 localhost kernel: end_request: I/O error, dev hdc, sector 119095 16 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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