I'm a bit unclear as to where some units are applied in my RAID setup, but was wondering how LVM interacted, could be, or should be setup so that created volumes would be aligned properly on top of a RAID disk. I'm using a RAID 'chunk' size of 64k as suggested by the RAID documentation and am using 6 disks to create a RAID6, giving 4 units of data/stripe. Does this mean my logical volume needs to be aligned on a 64K boundary, or a 256k boundary? I.e. does 64k usually specify chunk/unit, or chunk/stripe? What do I need to do to make sure my logical volumes always line up on RAID stripe boundaries? I've been using default logical volume parameters, which I think use an allocation size measured in Megabytes, so does that imply I'm automatically aligned (as 64k and 256k both divide into 1 Meg)? Or is some offset involved? Thanks! Linda Walsh _______________________________________________ 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/
