From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tim Moore Subject: Re: Raid5 Construction Question Date: Thu, 19 Aug 2004 11:32:32 -0700 Sender: linux-raid-owner@vger.kernel.org Message-ID: <4124F240.20606@nsr500.net> References: <4124E24E.7070802@psc.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4124E24E.7070802@psc.edu> To: linux-raid@vger.kernel.org List-Id: linux-raid.ids My raid tab has 'chunk-size 64' and I get 64k chunks. Does 'chunk-size 64k' mean 64M chunks? Did you set stride correctly when running mke2fs (based on chunk_size/fs_block_size)? Either one of these could trash performance. rgds, tim PAulN wrote: > Hi, > So I have a raid 5 which is around ~1TB and the problem I've been having > is that > the resync rate is really bad. This is understandable given that the > raid5 has not > been initialized. Does anyone know a way for me to initialize my raid5 > before I use it so > that the resync process doesn't run for 3 days? > thanks > paul > > > Config: > ------------------------------------------------- > raiddev /dev/md0 > raid-level 5 > nr-raid-disks 7 > nr-spare-disks 1 > chunk-size 64k > persistent-superblock 1 > parity-algorithm left-symmetric > device /dev/sda1 > raid-disk 0 > device /dev/sdb1 > raid-disk 1 > device /dev/sdc1 > raid-disk 2 > device /dev/sdd1 > raid-disk 3 > device /dev/sde1 > raid-disk 4 > device /dev/sdg1 > raid-disk 5 > device /dev/sdf1 > raid-disk 6 > device /dev/sdh1 > spare-disk 0 > ---------------------------------------- > > - > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- | for direct mail add "private_" in front of user name