From: Neil Brown <neilb@suse.de>
To: Mirko Benz <mirko.benz@web.de>
Cc: Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: parity check for read?
Date: Wed, 4 Apr 2007 07:07:53 +1000 [thread overview]
Message-ID: <17938.49705.840745.66635@notabene.brown> (raw)
In-Reply-To: message from Mirko Benz on Tuesday April 3
On Tuesday April 3, mirko.benz@web.de wrote:
> Hi,
>
> Is parity calculation and validation for read operations supported?
I guess what you are asking is:
With raid5, I would like the drive to handle a read request by
reading all the blocks in the stripe and checking the parity. If
the parity is correct, return the data blocks. If it is not, then
fail the read request. Is that possible?
No, it is not.
If you are really asking something else, please be more specific.
NeilBrown
next prev parent reply other threads:[~2007-04-03 21:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-03 13:21 parity check for read? Mirko Benz
2007-04-03 21:07 ` Neil Brown [this message]
2007-04-04 11:29 ` Mirko Benz
2007-04-04 13:35 ` Ric Wheeler
2007-04-04 15:57 ` Dan Williams
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