Re: USB disk fails when accessed after idle for some hours
On Wed, 04 Feb 2009 17:20:06 +0100, Reid Priedhorsky wrote:
>
> On Thu, 29 Jan 2009 22:00:13 +0100, Ron Johnson wrote:
>
>> On 01/29/2009 10:52 AM, Reid Priedhorsky wrote:
>>> All,
>>>
>>> I have a USB disk (a 320GB Western Digital My Passport) which is
>>> exhibiting the following problem.
>>>
>>> When first hooked up and mounted, it works fine. I've successfully
>>> transferred 100's of GB onto the disk.
>>>
>>> However, if left idle for some hours, it fails when accessed, with a
>>> spontaneous USB disconnect and reconnect of the device (log excerpts below).
>>
>> Could it be going into hibernation or sleep?
>
> hdparm -S0 (turning off spin-down) fixes the problem.
>
> (hdparm -B2555 - turn off advanced power management - doesn't help.)
>
> Thanks for the suggestions, folks!
>
> I am going to set up automount and see if that also helps. I will report
> back in a couple of weeks.
Automount (autofs) does not help.
Reid
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