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 (8.13.1/8.13.1) with ESMTP id l17FsAVL027793 for ; Wed, 7 Feb 2007 10:54:10 -0500 Received: from smtp01-wwo.pocketinet.com (smtp01-wwo.pocketinet.com [206.126.23.37]) by mx1.redhat.com (8.13.1/8.13.1) with ESMTP id l17Fs65x015786 for ; Wed, 7 Feb 2007 10:54:07 -0500 Message-ID: <45C9F5FC.8060200@cuttedge.com> Date: Wed, 07 Feb 2007 07:53:32 -0800 From: Scott Smyth MIME-Version: 1.0 Subject: Re: [linux-lvm] Doubts about LVM2 real limits References: <200702071509.l17F9TiU012582@mx2.redhat.com> In-Reply-To: <200702071509.l17F9TiU012582@mx2.redhat.com> Content-Transfer-Encoding: 7bit Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: LVM general discussion and development We have done >100 TB without a problem in a VG and in a single LV. The problem is with file system selection if you are using this large a LV as a file system. You are limited to XFS or JFS w/o venturing into ext4 and reiserfs4 which some people view as experimental still. We can only speak for XFS on a 100 TB file system. We have yet to try ext4 or reiserfs4 as a commercial file system. 3 Xyratex FC RAID controllers w/ expansion chassis attached. 4 Gb/s QLogic controllers. linux-2.6.17.14 device-mapper-1.02.13 LVM2-2.02.16 Sincerely, Scott Cesar O. Pablo wrote: > Hi, > > > We have plans to build a 30TB aprox. data storage using a set of SAN boxes configured as > RAID 5, our understanding is that using LVM2 with Red Hat 4 and our 64 bit AMD opteron > processors shall allow us to do that. Our concern is to know in advance if our approach is > wrong or even better if somebody else has been successfully taking the same road before. > > Documentation tells us that the limit is in the order of the 8 Exabytes (8TB for IA-32) > but this is not enough as this is a go / no go decision. > > Thanks for any help or pointer to a similar rig. > > Cesar O. Pablo > > > > > > Cesar > > > > _______________________________________________ > 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/ > >