From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.54) id 1EnCYb-0002t3-DD for garchives@archives.gentoo.org; Fri, 16 Dec 2005 10:11:22 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.5/8.13.5) with SMTP id jBGAAPQw001241; Fri, 16 Dec 2005 10:10:25 GMT Received: from mail.gmx.net (mail.gmx.de [213.165.64.21]) by robin.gentoo.org (8.13.5/8.13.5) with SMTP id jBGA6N53029623 for ; Fri, 16 Dec 2005 10:06:23 GMT Received: (qmail 2998 invoked by uid 0); 16 Dec 2005 10:06:23 -0000 Received: from 157.247.252.14 by www18.gmx.net with HTTP; Fri, 16 Dec 2005 11:06:23 +0100 (MET) Date: Fri, 16 Dec 2005 11:06:23 +0100 (MET) From: jarry@gmx.net To: gentoo-user@lists.gentoo.org Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 References: <20051216094942.71b3faa2@krikkit.digimed.co.uk> Subject: Re: [gentoo-user] Software RAID Advice Needed X-Priority: 3 (Normal) X-Authenticated: #787166 Message-ID: <19511.1134727583@www18.gmx.net> X-Mailer: WWW-Mail 1.6 (Global Message Exchange) X-Flags: 0001 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by robin.gentoo.org id jBGAAPRF001241 X-Archives-Salt: 2eaaf775-744d-498b-aaf4-97579a755855 X-Archives-Hash: 88791a17e03529582a82981cc4bcabfa >> If a disk fails, >> your system would likely crash (due to the swap device), but would >> reboot in a degraded mode (no swap, slow performance, etc). >=20 > You could avoid that by not using RAID for swap. Instead, use four > separate swap partitions, one on each drive. As long as they all have > the same priority, the kernel will share swap duties between them > equally. =20 If you make more swap partitions on more physical drives with the same priority, it is the same as swap on raid0: system strips swap across drives. And if some drive crashes and swap partition on that drive has been used, very probably system crashes too. But then reboots at least with remaining swap partitions... > There's no real benefit to using RAID for swap, unless you are > limited on RAM and use swap a lot, when RAID0 may help. There is some benefit, if you use raid1 for swap. In such a case even drive failure does not cause system crash, because swap space is mirrored too. But raid1 slightly degrades swap performance... Jarry --=20 Lust, ein paar Euro nebenbei zu verdienen? Ohne Kosten, ohne Risiko! Satte Provisionen f=FCr GMX Partner: http://www.gmx.net/de/go/partner --=20 gentoo-user@gentoo.org mailing list