BTW I wouldn't call it a "logical volume group". It's not a group of logical volumes, but of physical volumes to be treated as a single slab of storage capacity. You pile 1-n physical volumes together as a volume group and then slice off various amounts of the group's capacity in which to make logical volumes. A group of one PV may seem strange at first, but it makes things easier than having to make the LV layer understand *both* the VG and PV layers. Not to mention the sysadmin having to understand and remember two different layerings. I operate a bunch of boxes with hardware RAID and every one of them is currently set up as 1 PV : 1 VG : n LV. (None has enough disks to make multiple RAID sets worthwhile, or in most cases even possible.) I see the VG abstraction as capacity to deal with problems that just haven't come to our shop yet. -- Mark H. Wood, Lead System Programmer mwood@IUPUI.Edu Asking whether markets are efficient is like asking whether people are smart.
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