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SubjectRe: [smartmontools-support] SMART to USB/sata dock in 2.6.27-rc5 doesn't work
matthieu castet wrote:
> Hi,
>
> Tejun Heo wrote:
>> David Greaves wrote:
>>> Error Counter logging not supported
>>> Device does not support Self Test logging
>>
>> The USB bridge should support SAT (SCSI-ATA translation) and many
>> don't. Nothing much can be done about it. The hardware just don't know
>> how to do it.
>>
> That true that the hardware should support SAT, but even if it support
> it, linux need some patches to support SAT over USB. See
> http://thread.gmane.org/gmane.linux.scsi/43688 and the patch mentioned
> in the thread.
...

Ahh.. Great! This mostly fixes smartctl operation on at least two
of my USB drive enclosures here:

1. a recent rev. 2.5" NexStar-3 SATA enclosure.
2. a 250GB 2.5" WD "Passport" external USB drive/enclosure.

With the patch, this command line works for me:

smartctl -a -dsat -T permissive /dev/sdb

And hdparm just works regardless, with or without the patch.


>
> Unfortunately I am a bit busy to try to resubmit it. But I won't care if
> somebody improve it/resubmit it ;)
>
> Matthieu
>
> PS : there also http://thread.gmane.org/gmane.linux.usb.general/7145
> that is pending.
>
>
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