From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Benecke Subject: RE: Q: RAID-1 w/2x160GB, ReiserFS, Debian 'woody', homebrew 2.4.25 kernel Date: Thu, 05 Aug 2004 14:08:12 +0200 Sender: linux-raid-owner@vger.kernel.org Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: To: linux-raid@vger.kernel.org List-Id: linux-raid.ids robin-lists@robinbowes.com wrote: >> >> How about RAIDing the root partition? If one drive fails will the >> >> other be able to boot via LILO? How about GRUB? Which do >> >=20 >> > I have my root partition on a RAID1 mirror. I use grub and have >> > "installed" grub to both mirrored drives so I can boot off either, >> > e.g. if one fails. That reminds me, I must test this. >>=20 >> That's exactly what I want. >=20 > I've got some rough notes I made. I may tidy them up and publish them= on > my web site. Hi Robin, I'm still a bit torn between buying a 3ware hardware RAID for =A4140.- = and just using 'md'. The box is an Athlon64 3GHz, so it'll have enough CPU power to do the RAID in software, but with partitioning etc, I think th= e hardware raid will be easier to handle because you can just ignore it. = As long as the 3ware BIOS will handle failing drives, read/write errors, e= tc etc. properly. Right? =20 >> > keep /var/tmp and /tmp on the root partition. >>=20 >> No. I don't want a rogue script to fill up my root partition. >=20 > That, of course, is the reason you would want to keep /var/tmp and/or= /tmp > on separate partitions (or on the same partition - just symlink so > /var/tmp and /tmp are the same.) I would probably not symlink but I'd put them both on the same partitio= n.=20 =20 >> What I mean is, will md resync automatically or would I have >> to initiate this manually? >=20 > Md should re-sync automatically. =2E.. even onto a new blank disk? Or would you have to tell md manually= "this is the new spare, please sync"? Is this easy to do? Something like - copy partition table - for FOO in 1 2 3 4 5 ; do tell md "sync hda$FOO to hdc$FOO" or is it more complicated? =20 >> This setup seems quite complicated. Did you test the setup, >> ie. removed one of the MD disks and looked what happened? > I deliberated long and hard about how to implement my new system and = this > was about the least complicated route! Oh. ;) =20 >> >> The goal is to have as "stress free" a system as possible >> >> as little manual configuration, and in event of emergencies, as >> >> little work to do, as possible. >> > If you want stress free, buy a Netapps storage appliance ;o) >> If they do all the rest that I need (smtp, web, file server, > I was being slightly slippant - Netapps just do big storage arrays wi= th > very high availability. For example, if they detect that a drive is > failing they send an email to Netapps and an engineer comes round wit= h a > replacement disk all without any user intervention! I guess they're t= he > Rolls Royce of storage solutions. Expensive though. Ah. Well I don't think this'll fit in our budget. :) --=20 Jens Benecke http://www.hitchhikers.de - Europas kostenlose Mitfahrzentrale seit 199= 8 http://www.rb-hosting.de - Webhosting mit Extras - PHP ab =A49 - SSH ab= =A419 http://www.spamfreemail.de - 100% saubere Postf=E4cher, garantiert! - To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html