On 2013-04-24 19:34, Joseph Areeda wrote:
> Thanks Jeff,
>
> This does support my current hypothesis that the SSD I was mounting on /
> is the most likely culprit.
>
> What fun.
>
> Joe
>
> On 04/24/2013 10:27 AM, Jeff Siddall wrote:
>> On 04/23/2013 07:20 PM, Konstantin Olchanski wrote:
>>>> disk utility show ... SMART [is] fine.
>>>> >
>>> SMART "health report" is useless. I had dead disks report "SMART OK"
>>> and perfectly functional disks report "SMART Failure, replace your
>>> disk now".
>>
>> Agreed.  SMART doesn't diagnose everything.
>>
>> On the flaky drive I recently replaced smart extended offline tests
>> all passed as did the smart health assessment check. Nothing else
>> wrong either (no pending/offline uncorrectable or CRC errors).  But it
>> surely was not working well.
>>
>> Jeff


badblocks might be useful?

http://en.wikipedia.org/wiki/Badblocks

You'd presumably want the "non-destructive" tests...