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Date:      Thu, 15 Mar 2012 11:51:38 +0200
From:      George Kontostanos <gkontos.mail@gmail.com>
To:        freebsd-fs@freebsd.org
Subject:   Re: ZFS file corruption problem
Message-ID:  <CA%2BdUSyoaeJ3AJYAfXOFH3S8BgQjo_KjRgvdmnBNveEJmfeNOdg@mail.gmail.com>
In-Reply-To: <4F60D73F.2010201@intellasoft.net>
References:  <4F5F7116.3020400@intellasoft.net> <4F5F97A4.6070000@brockmann-consult.de> <4F60266D.1090302@intellasoft.net> <alpine.GSO.2.01.1203140858360.21564@freddy.simplesystems.org> <4F60D73F.2010201@intellasoft.net>

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On Wed, Mar 14, 2012 at 7:37 PM, Mark Murawski
<markm-lists@intellasoft.net> wrote:
> On 03/14/12 10:03, Bob Friesenhahn wrote:
>>
>> On Wed, 14 Mar 2012, Mark Murawski wrote:
>>>
>>>
>>> Why would the whole pool now become available upon access to a bad file=
?
>>
>>
>> A disk drive (or HBA) may be hanging (e.g. endless retries) when the bad
>> file is accessed. This is a common problem with consumer disks or HBAs
>> which believe they are the top level authority when it comes to data
>> integrity. Zfs itself does not include any timers to decide to stop
>> waiting. Zfs depends on the lower-level OS & drivers to decide to stop
>> waiting on a stalled device.
>>
>> Bob
>
>
>
> Ah okay. =A0And you assumed correctly that I had meant "become unavailabl=
e
> upon access".
>
> This is probably related to the bug I'm experiencing on my Promise SATA 3=
00
> TX4 controller
> (http://lists.freebsd.org/pipermail/freebsd-bugs/2012-March/047998.html)
>
> _______________________________________________
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> http://lists.freebsd.org/mailman/listinfo/freebsd-fs
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Yes, as a matter of fact:

http://www.aisecure.net/2011/07/07/promise-pdc40718-sata300-junk/

--=20
George Kontostanos
Aicom telecoms ltd
http://www.aisecure.net



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