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Date:      Mon, 27 Oct 2008 19:52:01 +0100
From:      martinko <gamato@users.sf.net>
To:        freebsd-stable@freebsd.org
Subject:   Re: Short SMART check causes disk op timeouts
Message-ID:  <ge52kh$uhv$1@ger.gmane.org>
In-Reply-To: <20081027175337.GA27175@icarus.home.lan>
References:  <4905951B.2050602@sh.cvut.cz>	<20081027160828.GA24496@icarus.home.lan>	<4905F8BB.3080302@sh.cvut.cz> <20081027175337.GA27175@icarus.home.lan>

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Jeremy Chadwick wrote:
>>>>
>>>> Now, does the timeout cause loss of any data? Is there anything besides
>>>> disabling the testing that I can do about it?
>>> Do you understand what short and long offline tests actually do and what
>>> they're used for?  :-)  If so, you'd know that running them periodically
>>> is more or less silly (IMHO).
>> I do not, not completely :) I think I have just copied the settings from
>> somewhere and only just tweaked it a bit whenever I have added a disk.
> 
> Let me know if you figure out who or what online resource solicited
> adding daily short/long tests, as I'd like to talk to them about their
> decision.  I have a feeling whoever thought it up felt that the tests
> were performing entire sector scans of the entire disk, which is simply
> not the case.
> 

Hallo,

Reading this thread I checked my config to find this: ;-)

#/dev/ad0 -a -n standby,q -o on -S on -s (S/../.././02|L/../../7/03) -m 
root    # ++ 2006-11-03 mato
/dev/ad0 -a -o on -S on -s (S/../.././02|L/../../7/03) -m root  # ++ 
2006-11-03 mato

I believe I came up with the settings after reading manual page / 
documentation of the tool.

Regards,

Martin




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