Hi guys, I'm putting together a storage server for NAS and iSCSI purposes and am looking to use LVM for some or all of this. I've read up on LVM but I still have some basic newbie questions for this. I've got a bunch of Raptor 150 ADFD drives and a 3Ware 9650SE board providing the basic back-end storage (currently RAID-5 but will move to RAID-6 soon, with estimated capacity of approx 800-900 GB, although the entire array may shrink or grow as projects demand). The opsys root partition will be about 40 GB XFS, with another 4GB swap partition, and the NAS/storage pool will be about 300 GB XFS, with the remainder of the space being used by the iSCSI volumes (about another 300 GB, divvied up among different iSCSI LUNs). I want to be able to shrink and expand these by about 10 GB per (although swap may only change by +/-4GB) so I figure I'll use LVM for all of the partitions. A couple of other considerations here: I need to align the partitions on page boundaries for iSCSI performance reasons, and I am also thinking about managing blockdev read-ahead differently for each of the final volumes. I assume that a single physical extent across /dev/sda will work as well as anything else here. Will having more partitions make it easier to shrink and expand the whole RAID if that ever becomes necessary? Anything else I should take into consideration? Should I create a single volume group or should I create multiple volume groups, or does it even matter? What are the issues? I have seen some people talk about creating hundreds of small partitions and using those for moving and resizing. Is this needed, desirable, or just a stupid human trick? Anything else I should take into consideration here would be appreciated Thanks! _______________________________________________ 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/
