Re: [BUG 2.6.21-rc3-git9] SATA NCQ failure with Samsum HD401LJ

From: Tejun Heo
Date: Sun Mar 18 2007 - 22:48:51 EST


Christian wrote:
> On Sunday 18 March 2007 06:43:09 you wrote:
>> Christian wrote:
>>>> This does indeed look like a drive side issue to me (the controller is
>>>> reporting CPBs with response flags 2 which as far as I can tell
>>>> indicates it's still waiting for the drive to complete the request).
>>> I have been using this hw-config (SATA II, NCQ) since the nvidia ADMA
>>> support made it in the -mm kernel (maybe around 2.6.19-mm? or even
>>> earlyer). I'm seeing this problem excessively since I upgraded to
>>> 2.6.21-rc3-mm1. I think something got broken recently...
>> Can you post the result of "hdparm -I /dev/sdX"?
>
> Output generated on 2.6.21-rc3-mm1 #3 SMP PREEMPT
>
> user@ubuntu:~$ sudo hdparm -I /dev/sda
>
> /dev/sda:
>
> ATA device, with non-removable media
> Model Number: SAMSUNG HD401LJ
> Serial Number: S0HVJ1FL900207
> Firmware Revision: ZZ100-15
> Standards:
> Used: ATA/ATAPI-7 T13 1532D revision 4a
> Supported: 7 6 5 4
> Configuration:
> Logical max current
> cylinders 16383 16383
> heads 16 16
> sectors/track 63 63
> --
> CHS current addressable sectors: 16514064
> LBA user addressable sectors: 268435455
> LBA48 user addressable sectors: 781422768
> device size with M = 1024*1024: 381554 MBytes
> device size with M = 1000*1000: 400088 MBytes (400 GB)

That's a fairly recent drive. Does the problem go away if you downgrade
the kernel?

--
tejun
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