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Re: Improving disk reliability

Previous thread: disklabel (?) issues during upgrade to 4.2 by Soner Tari on Thursday, January 3, 2008 - 12:56 pm. (6 messages)

Next thread: FW: Real men don't attack straw men by Stuart VanZee on Thursday, January 3, 2008 - 1:05 pm. (9 messages)
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From: Tobias Weingartner <weingart@...>
To: <misc@...>
Subject: Re: Improving disk reliability
Date: Thursday, January 3, 2008 - 12:59 pm

Actually, since you'd be mirroring to two different portions of the

same disk (assuming a non-flash device), chances are you would be more

likely to crash.


 1) You'll be running more code.  More code more bugs.


 2) You'll be writing everything to two parts of the same disk, making

    the disk continuously seek 1/2 a disk distance.  Likely not something

    you want to promote.


-Toby.

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 [100~Plax]sb16i0A2172656B63616820636420726568746F6E61207473754A[dZ1!=b]salax
[view original message]
From: Stuart Henderson <stu@...>
To: Tobias Weingartner <weingart@...>
Cc: <misc@...>
Subject: Re: Improving disk reliability
Date: Thursday, January 3, 2008 - 1:59 pm

Indeed, let's try that again ...


By writing to two areas of the same disk, you can do something

to protect against one failure mode (unreadable physical sections


I mentioned software complexity but definitely overlooked the additional

seeks which are not a good thing.


Thanks for the correction.
Previous thread: disklabel (?) issues during upgrade to 4.2 by Soner Tari on Thursday, January 3, 2008 - 12:56 pm. (6 messages)

Next thread: FW: Real men don't attack straw men by Stuart VanZee on Thursday, January 3, 2008 - 1:05 pm. (9 messages)