From: Piergiorgio Sartor <piergiorgio.sartor@nexgo.de>
To: David Brown <david@westcontrol.com>
Cc: Piergiorgio Sartor <piergiorgio.sartor@nexgo.de>,
linux-raid@vger.kernel.org
Subject: Re: Is this enough for us to have triple-parity RAID?
Date: Tue, 17 Apr 2012 22:54:05 +0200 [thread overview]
Message-ID: <20120417205405.GA8311@lazy.lzy> (raw)
In-Reply-To: <4F8DD02F.1060504@westcontrol.com>
Hi David,
On Tue, Apr 17, 2012 at 10:18:55PM +0200, David Brown wrote:
[some stuff removed]
I think that we must understand a bit better
systematic RS.
The ideal case would be to have a RAID system
where, while adding a disk, the user can decide
if it (the disk) would be for data extension or
for redundancy (parity) extension.
This should be always possible and, in the first
place, performance should not be the target.
As mentioned before, par2 does it without too
many issues, so I fail to see why three parities
should be the limit.
Actually, I'm trying to catch some RS expert in
order to get an explanation (Q&A) on how the
whole thing works. Unfortunately experts seem to
be quite sluggish... :-)
bye,
--
piergiorgio
next prev parent reply other threads:[~2012-04-17 20:54 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-17 6:11 Is this enough for us to have triple-parity RAID? Alex
2012-04-17 7:58 ` David Brown
2012-04-17 16:37 ` Stefan /*St0fF*/ Hübner
2012-04-18 14:15 ` Alex
2012-04-18 14:11 ` David Brown
2012-04-17 17:16 ` Piergiorgio Sartor
2012-04-17 20:18 ` David Brown
2012-04-17 20:54 ` Piergiorgio Sartor [this message]
2012-04-18 18:22 ` Piergiorgio Sartor
2012-04-18 20:20 ` David Brown
2012-04-18 20:39 ` Piergiorgio Sartor
2012-04-19 18:16 ` H. Peter Anvin
2012-04-20 2:27 ` Alex
2012-04-20 3:00 ` H. Peter Anvin
2012-04-20 3:32 ` Alex
2012-04-20 18:58 ` David Brown
2012-04-20 19:39 ` H. Peter Anvin
2012-04-20 21:04 ` Piergiorgio Sartor
2012-04-20 21:01 ` Piergiorgio Sartor
2012-04-20 21:29 ` Peter Grandi
2012-04-20 22:31 ` Piergiorgio Sartor
2012-04-21 9:51 ` Peter Grandi
2012-04-21 11:18 ` Piergiorgio Sartor
2012-04-22 3:14 ` Alex
2012-04-22 8:57 ` Piergiorgio Sartor
2012-04-20 7:45 ` Stan Hoeppner
2012-04-23 15:26 ` Alex
2012-04-25 1:20 ` Stan Hoeppner
2012-04-25 2:45 ` Alex
2012-04-25 16:59 ` Emmanuel Noobadmin
2012-04-25 19:29 ` David Brown
2012-04-26 2:30 ` Alex
2012-04-27 15:15 ` Emmanuel Noobadmin
2012-05-01 16:38 ` Alex
2012-04-26 4:24 ` Alex
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