From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (mx1.redhat.com [172.16.48.31]) by int-mx1.corp.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k8KDtXem008984 for ; Wed, 20 Sep 2006 09:55:33 -0400 Received: from incantation.Mines.EDU (incantation.Mines.EDU [138.67.130.6]) by mx1.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k8KDtWUn026714 for ; Wed, 20 Sep 2006 09:55:33 -0400 Received: from merlin.Mines.EDU (merlin.Mines.EDU [138.67.4.11]) (authenticated bits=0) by incantation.Mines.EDU (8.12.11.20060308/8.12.11) with ESMTP id k8KDtOep016282 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NO) for ; Wed, 20 Sep 2006 07:55:27 -0600 Subject: Re: [linux-lvm] LVM on RAID From: "Matthew B. Brookover" In-Reply-To: References: <1158603016.7182.12.camel@localhost.localdomain> <450EEEA0.7020703@mdmiller.com> <1158606792.7182.15.camel@localhost.localdomain> <1158607438.19905.30.camel@bounty.rider.geekspirit.net> <1158608077.7182.18.camel@localhost.localdomain> <1158608557.19905.37.camel@bounty.rider.geekspirit.net> <1158609135.7182.21.camel@localhost.localdomain> <1158609477.19905.38.camel@bounty.rider.geekspirit.net> Content-Type: multipart/alternative; boundary="=-j2Dm+xfVZCRVknBRErKg" Date: Wed, 20 Sep 2006 07:55:24 -0600 Message-Id: <1158760524.26653.4.camel@merlin.Mines.EDU> Mime-Version: 1.0 Reply-To: mbrookov@mines.edu, LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: To: LVM general discussion and development --=-j2Dm+xfVZCRVknBRErKg Content-Type: text/plain Content-Transfer-Encoding: 7bit I have used LVM on top of software raid and ISCSI. It works well. It also helps keep track of what device is where. ISCSI does not export its targets in the same order, some times sdb shows up as sdc.... LVM will keep track of what is what. Matt On Tue, 2006-09-19 at 16:53 -0500, Alexander Lazarevich wrote: > We have several RAID devices (16-24 drive Fiber/SCSI attached RAID) which > are currently single devices on our 64bit linux servers (RHEL-4, core5). > We are considering LVM'ing 2 or more of the RAID's into a LVM group. I > don't doubt the reliability and robustness of LVM2 on single drives, but I > worry about it on top of RAID devices. > > Does anyone have any experience with LVM on to of RAID volumes, positive > or negative? > > Thanks, > > Alex > > _______________________________________________ > linux-lvm mailing list > linux-lvm@redhat.com > https://www.redhat.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ --=-j2Dm+xfVZCRVknBRErKg Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit I have used LVM on top of software raid and ISCSI. It works well. It also helps keep track of what device is where. ISCSI does not export its targets in the same order, some times sdb shows up as sdc.... LVM will keep track of what is what.

Matt

On Tue, 2006-09-19 at 16:53 -0500, Alexander Lazarevich wrote:

We have several RAID devices (16-24 drive Fiber/SCSI attached RAID) which 
are currently single devices on our 64bit linux servers (RHEL-4, core5). 
We are considering LVM'ing 2 or more of the RAID's into a LVM group. I 
don't doubt the reliability and robustness of LVM2 on single drives, but I 
worry about it on top of RAID devices.

Does anyone have any experience with LVM on to of RAID volumes, positive 
or negative?

Thanks,

Alex

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