Hi! I am using LVM on a hardware RAID 5 and I'd like to tune the alignment of lvm extents to match the raid stripe size. My raid chunk size is 64k and I am using 5 data-bearing discs (raid 5 with 6 discs), so the raid stripe size should be 64k * 5 = 320k. I have already managed to properly align the partition to a multiple of this value and I am able to align the beginning of the first extent by specifying --dataalignment 320k to pvcreate. But unfortunately the --physicalextentsize must be a power of 2, so I cannot use a multiple of 320k as the physical extent size. What are your experiences with tuning and properly aligning lvm + raid? Does anyone know a workaround? Thanks, --leo -- e-mail ::: Leo.Bergolth (at) wu.ac.at fax ::: +43-1-31336-906050 location ::: IT-Services | Vienna University of Economics | Austria _______________________________________________ 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/
