Re: how to be told imm. when dma is turned off?
From: Hugo Vanwoerkom (hvw59601_at_care2.com)
Date: 10/19/05
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To: debian-user@lists.debian.org Date: Wed, 19 Oct 2005 13:55:11 -0500
Bruno Buys wrote:
> Hugo Vanwoerkom wrote:
>
>> Hi,
>>
>> The other day under 2.6.13-ck8 and Sarge, the kernel, bless 'm (her?),
>> reset ide0 and turned off dma on /dev/hdb where I was running on
>> partition #3. (See the end of this post)
>>
>> I saw the effects of it while playing KUSC, but did not realize it was
>> dma that was turned off and a reset had occurred.
>>
>> A little later on the kernel mounted the fs r/o and all hell broke
>> loose of course.
>>
>> How can I be told immediately when dma is turned off on either disk
>> and a reset has occurred? (Without having to look someplace).
>>
>> These were the syslog messages:
>> ...
>> Oct 15 04:44:14 localhost kernel: hdb: dma_intr: status=0×51 {
>> DriveReady SeekComplete Error }
>> Oct 15 04:44:14 localhost kernel: hdb: dma_intr: error=0×84 {
>> DriveStatusError BadCRC }
>> Oct 15 04:44:14 localhost kernel: ide: failed opcode was: unknown
>> Oct 15 04:44:14 localhost kernel: end_request: I/O error, dev hdb,
>> sector 32573730
>> Oct 15 04:44:14 localhost kernel: Buffer I/O error on device hdb3,
>> logical block 163905
>> Oct 15 04:44:14 localhost kernel: lost page write due to I/O error on
>> hdb3
>> ...
>> Oct 15 04:44:14 localhost kernel: hdb: dma_intr: status=0×51 {
>> DriveReady SeekComplete Error }
>> Oct 15 04:44:14 localhost kernel: hdb: dma_intr: error=0×84 {
>> DriveStatusError BadCRC }
>> Oct 15 04:44:14 localhost kernel: ide: failed opcode was: unknown
>> Oct 15 04:44:14 localhost kernel: ide0: reset: success
>> ...
>> Oct 15 07:00:01 localhost /USR/SBIN/CRON25263: (root) CMD (test -x
>> /usr/sbin/anacron || run-parts—report /etc/cron.daily)
>> ...
>> Oct 15 07:00:02 localhost kernel: attempt to access beyond end of device
>> Oct 15 07:00:02 localhost kernel: hdb3: rw=0, want=269866160,
>> limit=15631245
>> Oct 15 07:00:02 localhost kernel: attempt to access beyond end of device
>> Oct 15 07:00:02 localhost kernel: hdb3: rw=0, want=269866160,
>> limit=15631245
>> Oct 15 07:00:02 localhost kernel: EXT2-fs error (device hdb3):
>> ext2_readdir: bad page in #83883
>> Oct 15 07:00:02 localhost kernel: Remounting filesystem read-only
>> ...
>>
>> BTW this is a 4 months old SAMSUNG 80GB ATA disk.
>>
>> Thanks.
>>
>> H
>>
>>
>
>
> I don´t mean to scare you, friend. But the problem is the disk. I
> already saw these { DriveReady SeekComplete Error } msgs before, and it
> was quite traumatic. My bad luck, I bought a seagate disk from a really
> buggy batch, in an obscure vendor. The first one badblocked in three
> months, after changing for a new one, it badblocked in like four months.
> Finally the third one badblocked in six months, enough to void warranty.
> I got really pissed.
> Run 'badblocks' on the disk, make backups, etc... Dma is your least
> harmful problem now.
>
I got over the scare already and plan a new (non-samsung) disk. But
still... I would like to be told immediately when these problems occur
and not when the fs finally goes r/o.
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- Previous message: Andrew M.A. Cater: "Re: new users"
- In reply to: Bruno Buys: "Re: how to be told imm. when dma is turned off?"
- Next in thread: Justin Guerin: "Re: how to be told imm. when dma is turned off?"
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