From mboxrd@z Thu Jan 1 00:00:00 1970 From: lembark@wrkhors.com Subject: Re: [linux-lvm] Does LVM detect drive failures? Message-ID: <320450000.1005068617@duke.wrkhors.com> In-Reply-To: <20011106172021.75477.qmail@web20003.mail.yahoo.com> References: <20011106172021.75477.qmail@web20003.mail.yahoo.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: Date: Tue Nov 6 11:43:02 2001 List-Id: Content-Type: text/plain; charset="us-ascii" To: linux-lvm@sistina.com, Quentin Arce -- Quentin Arce on 11/06/01 09:20:21 -0800 > Hello, > > I'm not on the mailing list so please reply to all. > Thanks. > My question is does LVM detect drive failures? I am > thinking about building two small logical volumes of 2 > drives each then mirroring them using md. I know md > will detect that the array contains a failed drive > under normal conditions, but I would think that in > this case an entire logical volume would have to fail > in order for it to be detected. That is unless I can > watch my logs for LVM giving me an error like I do for > md errors. > > One other question... I'll search the md info if no > one knows this off the top... does the md layer store > info about the size of the drive on the drive? I'm > worried about adding more dives to a logical volume > which is a part of a md stripe. LVM is going to have more problems with hardware failures than RAID. You are better off building VG's out of mirrored PV's (or, if you have 2+ drives w/tih 4+ partitions use RAID5). The RAID will keep PV's available for LVM. -- Steven Lembark 2930 W. Palmer Workhorse Computing Chicago, IL 60647 +1 800 762 1582