From: Redeeman <redeeman@metanurb.dk>
To: Eyal Lebedinsky <eyal@eyal.emu.id.au>
Cc: linux-raid@vger.kernel.org
Subject: Re: Handling mismatch_cnt
Date: Sun, 26 Jul 2009 06:22:34 +0200 [thread overview]
Message-ID: <1248582154.32584.68.camel@localhost> (raw)
In-Reply-To: <4A6A4C73.2070000@eyal.emu.id.au>
On Sat, 2009-07-25 at 10:06 +1000, Eyal Lebedinsky wrote:
> Thanassis Tsiodras wrote:
> > Handling mismatch_cnt<>0
> [trim]
> > Am I missing something? Is MD RAID1 in fact better than what I
> > have understood? Is there an answer that would allow me to use it
> > without the uncertainty of "russian-roulette" fixes when the
> > inevitable mismatch_cnt<>0 occurs?
>
> RAID1 will ensure your data is not lost when one disk completely fails.
> This is a rather common mode of failure. You are protected against this
> catastrophic event but not against (minor? damage of a) sector failure.
> I use RAID for just this benefit.
>
> Unlike RAID5, RAID6 should be able to do better than a random correction
> (does it?).
Nope
>
> RAID1 with more than two disks should also do better with voting
> (does it?).
Nope.
Theres a previous thread i started about this, with more details..
>
> > In other words, is there anything a Linux guy can do besides wait
> > for btrfs or trust a FUSE version of ZFS?
> >
> > Thanks for any feedback,
> > Thanassis.
>
prev parent reply other threads:[~2009-07-26 4:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-24 16:01 Handling mismatch_cnt Thanassis Tsiodras
2009-07-25 0:06 ` Eyal Lebedinsky
2009-07-26 4:22 ` Redeeman [this message]
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