Re: Linux 2.6.24-rc7

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To: Tejun Heo <htejun@...>
Cc: Linux-Kernel, <linux-kernel@...>
Date: Sunday, January 13, 2008 - 7:19 pm

On Thu, 10 Jan 2008 22:10:08 +0900, Tejun Heo <htejun@gmail.com> wrote:


I'm still pending to pysically remove the disks (or at least unplug the
cable...), but I have realized a cusious thing: after some errors, the
kernel is lowering the disk speed (UDMA/133, then 100, then 33):

ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata3.00: cmd c8/00:08:07:81:3f/00:00:00:00:00/e0 tag 0 dma 4096 in
         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata3.00: status: { DRDY }
ata3: soft resetting link
ata3.00: configured for UDMA/133
ata3: EH complete
...
ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata3.00: cmd c8/00:48:05:73:33/00:00:00:00:00/ef tag 0 dma 36864 in
         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata3.00: status: { DRDY }
ata3: soft resetting link
ata3.00: configured for UDMA/133
ata3: EH complete
...
(one more 133)
...
ata3.00: limiting speed to UDMA/100:PIO4
ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata3.00: cmd c8/00:40:8d:9c:84/00:00:00:00:00/eb tag 0 dma 32768 in
         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata3.00: status: { DRDY }
ata3: soft resetting link
ata3.00: configured for UDMA/100
...
(3 more 100)
...
ata3.00: limiting speed to UDMA/33:PIO4
ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata3.00: cmd ca/00:08:9f:00:1a/00:00:00:00:00/e2 tag 0 dma 4096 out
         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata3.00: status: { DRDY }
ata3: soft resetting link
ata3.00: configured for UDMA/33
...

Perhaps this gives a clue.
Or I just had bad luck and 2 of my 4 disks broke at the same time.

--
J.A. Magallon <jamagallon()ono!com>     \               Software is like sex:
                                         \         It's better when it's free
Mandriva Linux release 2008.1 (Cooker) for i586
Linux 2.6.23-jam05 (gcc 4.2.2 20071128 (4.2.2-2mdv2008.1)) SMP PREEMPT
--
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Messages in current thread:
Linux 2.6.24-rc7, Linus Torvalds, (Sun Jan 6, 6:19 pm)
Re: Linux 2.6.24-rc7, Willy Tarreau, (Tue Jan 8, 9:17 pm)
Re: Linux 2.6.24-rc7: sparc64: WARNING: at kernel/lockdep_pr..., Mariusz Kozlowski, (Wed Jan 9, 12:31 pm)
Re: Linux 2.6.24-rc7, J.A. , (Mon Jan 7, 8:50 pm)
Re: Linux 2.6.24-rc7, Tejun Heo, (Tue Jan 8, 9:56 pm)
Re: Linux 2.6.24-rc7, J.A. , (Thu Jan 10, 5:25 am)
Re: Linux 2.6.24-rc7, Tejun Heo, (Thu Jan 10, 9:10 am)
Re: Linux 2.6.24-rc7, J.A. , (Sun Jan 13, 7:19 pm)
Re: Linux 2.6.24-rc7, Tejun Heo, (Sun Jan 13, 7:57 pm)
Re: Linux 2.6.24-rc7, J.A. , (Mon Jan 14, 7:38 pm)
Re: Linux 2.6.24-rc7, Tejun Heo, (Mon Jan 14, 7:56 pm)
Re: Linux 2.6.24-rc7, Avuton Olrich, (Tue Jan 8, 9:32 pm)
Re: Linux 2.6.24-rc7, Alejandro Riveira , (Mon Jan 7, 12:14 pm)
Re: Linux 2.6.24-rc7, Michael Buesch, (Mon Jan 7, 12:24 pm)
Re: Linux 2.6.24-rc7, Alejandro Riveira , (Mon Jan 7, 12:52 pm)
Re: Linux 2.6.24-rc7, Michael Buesch, (Mon Jan 7, 1:30 pm)
Re: Linux 2.6.24-rc7, Alejandro Riveira , (Mon Jan 7, 4:23 pm)
Re: Linux 2.6.24-rc7, Michael Buesch, (Tue Jan 8, 11:30 am)
Re: Linux 2.6.24-rc7, Alejandro Riveira , (Tue Jan 8, 11:55 am)
Re: Linux 2.6.24-rc7, Alejandro Riveira , (Mon Jan 7, 11:53 am)
section mismatch warning in head_64.S, Sam Ravnborg, (Mon Jan 7, 12:31 pm)
Re: section mismatch warning in head_64.S, Alejandro Riveira , (Tue Jan 15, 6:18 am)
smpboot_64 section mismatch warning, Sam Ravnborg, (Mon Jan 7, 12:27 pm)
Re: smpboot_64 section mismatch warning, David Howells, (Tue Jan 8, 7:17 am)
Re: smpboot_64 section mismatch warning, David Howells, (Mon Jan 7, 7:27 pm)
Re: smpboot_64 section mismatch warning, Alejandro Riveira , (Tue Jan 8, 5:14 am)
Re: Linux 2.6.24-rc7 kernel BUG at kernel/sched.c:5156!, Kamalesh Babulal, (Mon Jan 7, 8:13 am)
Re: Linux 2.6.24-rc7 Build Failure on headers_install, Kamalesh Babulal, (Mon Jan 7, 4:48 am)
Re: Linux 2.6.24-rc7 Build Failure on headers_install, Sam Ravnborg, (Mon Jan 7, 6:12 am)
Re: Linux 2.6.24-rc7 Build Failure on headers_install, Kamalesh Babulal, (Tue Jan 8, 6:51 am)
Re: Linux 2.6.24-rc7 Build Failure on headers_install, Sam Ravnborg, (Tue Jan 8, 9:10 am)
Re: Linux 2.6.24-rc7, Mark Lord, (Sun Jan 6, 7:52 pm)
Re: Linux 2.6.24-rc7, Linus Torvalds, (Sun Jan 6, 8:08 pm)
Re: Linux 2.6.24-rc7, Tejun Heo, (Sun Jan 6, 8:35 pm)