On Fri, 08 Apr 2011 15:50:03 +0200, Dale wrote about Re: [gentoo-user] LVM for data drives but not the OS:
[snip] >Ooooh. Still some progress tho. lol So, if I was going to use LVM, >I create a partition first, either whole drive or part of it then use >LVM on that? You use pvcreate to create a physical volume from the partition; this formats the partition for LVM use, rather than for a filesystem. When you have enough physical volumes on enough disks -- it's usually one large PV per disk -- you then use vgcreate to amalgamate those physical volumes into a volume group. You can then use lvcreate to allocate logical volumes within that volume group. After that, you use mkfs to format each logical volume, as if it were a partition. You can then add them to /etc/fstab and mount them as needed. Note that the amalgamation of physical volumes into a volume group allows you to do some neat things: you can "stripe" a logical volume across multiple physical volumes to improve its I/O bandwidth; your volume group is what DASD managers call a "concatenation set", which means its effective size is the sum of the physical volume sizes, so you can create a logical volume that is bigger than any of the physical volumes involved. But before you do any of that fancy stuff, get used to using LVM2 as a smarter partition manager. -- Regards, Dave [RLU #314465] *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* dwn...@ntlworld.com (David W Noon) *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
signature.asc
Description: PGP signature
