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Date: Wed, 23 Dec 2009 17:29:16 +0800 (CST)
From: fengxiangjun <fengxiangjun@...soft.com>
To: Tejun Heo <tj@...nel.org>
Cc: Robert Hancock <hancockrwd@...il.com>,
linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: 2.6.32.2 SATA link detect failed, 2.6.32.1 works fine
Hi,
with this patch, the problem still exists.
ata1.01: XXX debounce start, SStatus=4
ata1.01: XXX debounce done, SStatus=4, DET stable for 520 msecs
ata1.00: SATA link down (SStatus 0 SControl 301)
ata1.01: SATA link down (SStatus 0 Scontrol 300)
...
VFS; cannot open root device ...
The kernel just panic, and I can't see what's the messege printing before
that.
So, I tried 'console=ttyS0 console=tty1'，full dmesg attached。
$ hdparm -I /dev/sda:
/dev/sda:
ATA device, with non-removable media
Model Number: WDC WD800JD-60LSA5
Serial Number: WD-WCAM9T882872
Firmware Revision: 10.01E03
Standards:
Supported: 7 6 5 4
Likely used: 8
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 156301488
LBA48 user addressable sectors: 156301488
device size with M = 1024*1024: 76319 MBytes
device size with M = 1000*1000: 80026 MBytes (80 GB)
cache/buffer size = 8192 KBytes
Capabilities:
LBA, IORDY(can be disabled)
Standby timer values: spec'd by Standard, with device specific
minimum
R/W multiple sector transfer: Max = 16 Current = 16
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* SATA-I signaling speed (1.5Gb/s)
* SATA-II signaling speed (3.0Gb/s)
* Phy event counters
Device-initiated interface power management
* Software settings preservation
* SMART Command Transport (SCT) feature set
* SCT Long Sector Access (AC1)
* SCT LBA Segment Access (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
unknown 206[12] (vendor specific)
Security:
Master password revision code = 65534
supported
not enabled
not locked
frozen
not expired: security count
supported: enhanced erase
24min for SECURITY ERASE UNIT. 24min for ENHANCED SECURITY ERASE
UNIT.
Checksum: correct
Thanks.
On Wed, 23 Dec 2009, Tejun Heo wrote:
> Hello,
>
> On 12/22/2009 11:02 AM, fengxiangjun wrote:
> > You are right, it's definitely timing related.
> >
> > I just tried capturing the failed booting message through a null modem
> > cable, but the problem goes away! It seems that I can't reproduce it
> > with serial console attached.
>
> Hmmm... this is the second report of probing failure with SIDPR based
> hardreset. Can you please apply the attached patch and see whether
> the problem is reproducible? And if so, please attach full boot log.
> Can you please also attach hdparm -I output of the occassionally
> failing drive.
>
> Thanks.
>
> --
> tejun
>
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