From: Pete Zaitcev <zaitcev@redhat.com>
To: linux-kernel@vger.kernel.org
Subject: Re: Is Swapping on software RAID1 possible in linux 2.4 ?
Date: Thu, 5 Jul 2001 14:56:33 -0400 [thread overview]
Message-ID: <200107051856.f65IuXf29897@devserv.devel.redhat.com> (raw)
In-Reply-To: <mailman.994340644.23368.linux-kernel2news@redhat.com>
In-Reply-To: <1011478953412.20010705152412@spylog.ru> <15172.22988.643481.421716@notabene.cse.unsw.edu.au> <11486070195.20010705172249@spylog.ru> <mailman.994340644.23368.linux-kernel2news@redhat.com>
In linux-kernel, you wrote:
> Peter Zaitsev wrote:
> >
> > That's why I thought this problem is related to raid1 swapping I'm
> > using.
>
> Well there is the potential problem that RAID1 has that it can't avoid allocating
> memory in some occasions, for the 2nd bufferhead. ATARAID raid0 has the same problem for
> now, and there is no real solution to this. You can pre-allocate a bunch of bufferheads,
> but under high load you will run out of those, no matter how many you pre-allocate.
Arjan, why doesn't it sleep instead (GFP_KERNEL)?
-- Pete
next prev parent reply other threads:[~2001-07-05 18:56 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.994340644.23368.linux-kernel2news@redhat.com>
2001-07-05 11:24 ` Is Swapping on software RAID1 possible in linux 2.4 ? Peter Zaitsev
2001-07-05 12:13 ` Neil Brown
2001-07-05 13:22 ` Re[2]: " Peter Zaitsev
2001-07-05 13:42 ` Arjan van de Ven
2001-07-05 18:56 ` Pete Zaitcev [this message]
2001-07-12 1:14 ` Re[2]: " Neil Brown
2001-07-12 1:48 ` Andrew Morton
2001-07-12 3:22 ` Neil Brown
2001-07-12 4:53 ` Andrew Morton
2001-07-05 14:54 ` Nick DeClario
2001-07-05 15:12 ` Joseph Bueno
2001-07-11 12:08 ` Paul Jakma
2001-07-06 9:38 ` Re[2]: " Peter Zaitsev
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