From: Jeff Garzik <jgarzik@pobox.com>
To: Henrik Gustafsson <lkml@fnord.se>
Cc: linux-kernel@vger.kernel.org
Subject: Re: poor sata performance on 2.6
Date: Mon, 19 Apr 2004 12:56:18 -0400 [thread overview]
Message-ID: <408404B2.30602@pobox.com> (raw)
In-Reply-To: <opr6pp57mvesu439@mail1.telia.com>
Henrik Gustafsson wrote:
> [cut]
>
>> I _really_ like the SX4 -- it gives the programmer full control over
>> all aspects of RAID operation, while providing useful hardware
>> acceleration where it's needed. And not getting in the way of the
>> programmer, when it's not needed.
>
>
> Does this mean that the hardware-accelerated RAID5-mode will be
> compatible with soft-RAID5? So that I am able to create a RAID5-array
> today and get all the goodies from hardware-support later without having
> to do the backup - recreate-array - restore dance?
Who knows. It depends on the XOR algorithm block size and such. I
_think_ XOR'ing is compatible, but have not tested to verify that assertion.
Jeff
next prev parent reply other threads:[~2004-04-19 16:56 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-14 22:36 poor sata performance on 2.6 Konstantin Sobolev
2004-04-15 3:54 ` Ryan Geoffrey Bourgeois
2004-04-15 10:55 ` Konstantin Sobolev
2004-04-15 12:02 ` Justin Cormack
2004-04-15 13:34 ` Konstantin Sobolev
2004-04-15 14:00 ` Justin Cormack
2004-04-15 14:26 ` Konstantin Sobolev
2004-04-15 14:33 ` Justin Cormack
2004-04-15 14:48 ` Konstantin Sobolev
2004-04-15 14:52 ` Prakash K. Cheemplavam
2004-04-15 17:30 ` Denis Vlasenko
2004-04-16 1:05 ` Jeff Garzik
2004-04-16 14:48 ` Denis Vlasenko
2004-04-16 16:59 ` Konstantin Sobolev
2004-04-16 17:46 ` cira
2004-04-20 12:41 ` Prakash K. Cheemplavam
2004-04-15 15:51 ` Ryan Geoffrey Bourgeois
2004-04-15 23:34 ` Simon Koch
2004-04-16 0:11 ` poor sata performance on 2.6 - Promise SX4 Ryan Geoffrey Bourgeois
2004-04-16 1:03 ` poor sata performance on 2.6 Jeff Garzik
2004-04-19 16:45 ` Henrik Gustafsson
2004-04-19 16:56 ` Jeff Garzik [this message]
2004-04-15 7:12 ` Lenar Lõhmus
2004-04-15 10:40 ` Konstantin Sobolev
2004-04-15 12:37 ` Denis Vlasenko
2004-04-15 12:57 ` Lenar Lõhmus
2004-04-15 16:54 ` Denis Vlasenko
2004-04-15 13:05 ` Konstantin Sobolev
2004-04-15 19:50 ` Pavel Machek
2004-04-15 21:13 ` Konstantin Sobolev
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