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 4.43) id 1EBOZI-0000NQ-Ig for garchives@archives.gentoo.org; Sat, 03 Sep 2005 03:19:49 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.4/8.13.4) with SMTP id j833Fj20000245; Sat, 3 Sep 2005 03:15:45 GMT Received: from melchior.nuitari.net (melchior.nuitari.net [216.75.167.113]) by robin.gentoo.org (8.13.4/8.13.4) with ESMTP id j833Fh1s001530 for ; Sat, 3 Sep 2005 03:15:44 GMT Received: (qmail 26959 invoked by uid 500); 2 Sep 2005 23:18:32 -0400 Received: from localhost (sendmail-bs@127.0.0.1) by localhost with SMTP; 2 Sep 2005 23:18:32 -0400 Date: Fri, 2 Sep 2005 23:18:32 -0400 (EDT) From: Nuitari To: gentoo-amd64@lists.gentoo.org Subject: Re: [gentoo-amd64] Upgrading to Raid In-Reply-To: <4318FB5C.8070307@albrookdata.com> Message-ID: References: <20050901034637.38BC91B8BB@localhost.comcast.net> <4318E87F.1070802@gmx.at> <4318FB5C.8070307@albrookdata.com> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-amd64@gentoo.org Reply-to: gentoo-amd64@lists.gentoo.org MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="655873-246895116-1125717512=:6021" X-Archives-Salt: 366ad89a-5a97-4716-b03d-44ef221ddac9 X-Archives-Hash: ea18cb96e31bff4a324e5a3b176ef4d1 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --655873-246895116-1125717512=:6021 Content-Type: TEXT/PLAIN; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by robin.gentoo.org id j833Fj32000245 There is a huge difference between RAID5 and RAID10. Software-RAID5 should be avoided as it is CPU intensive and there are man= y=20 good true hardware solutions for it that are supported in Linux. On Fri, 2 Sep 2005, Francisco Perez wrote: > Date: Fri, 02 Sep 2005 20:24:44 -0500 > From: Francisco Perez > Reply-To: gentoo-amd64@lists.gentoo.org > To: gentoo-amd64@lists.gentoo.org > Subject: Re: [gentoo-amd64] Upgrading to Raid >=20 > Correct me if I am wrong since I have yet to have to deal with restorin= g=20 > failed disk in an array, but in a hardware raid, with my card I would j= ust=20 > enter the card's bios after rebooting and then restore the new replacem= ent=20 > drive from the secondary image (remember I am using raid 10 with 4 disk= s.)=20 > Is there something I'm forgetting? > > Frank > > Florian D. wrote: >> because there are so many people praising software-raid, you=B4ll pro= bably >> find this story interesting, which happened to me yesterday (my syste= m is >> -for the biggest part- on a raid5 partition): >> >> while I emerged koffice, played some mp3=B4s and let matlab calculate= sth. >> in the background, I tried to start a windows program with wine. I re= ally >> shouldn=B4t do that, because Linux crashed and after a hard reboot it= could >> not boot any more. It stopped during the execution of the init-script= s and >> i was not able to do anything, thus: 2nd hard reboot. I have another(= old) >> gentoo installation on my computer and this time I booted into that o= ne. >> By accident I realized that one of the discs of my raid system has be= en >> marked as faulty and it was syncing in the background. /proc/mdstat s= aid >> that it would need 20min or so, but after 15min it said 200min! After >> another 10min it was sth >300min (and a lot of IO errors). So I reboo= ted >> again, this time it synced successfully in 12min. Then it was possibl= e to >> boot and work with my normal system without any further difficulties = or IO >> errors. >> >> Summing up, I can say: >> >> + I successfully wrecked my file system, but software raid was able t= o >> repair it >> - without a second Linux-installation on another partition, you=B4re = lost >> - restoring of a faulty raid disk is not reliable >> - it seems that it is not possible to boot or work with a system, who= se >> system disk is being restored at the same time (Linux-2.6.12.6) > --655873-246895116-1125717512=:6021-- -- gentoo-amd64@gentoo.org mailing list