On Saturday 12 May 2007, Dave wrote:
Hi, I don't like to start messages out this way and this is my opinion but i'm really beginning to hate lvm. With that out of the way here's the situation. I have a centos 4.4 drive with two partitions on it, one an hd*1 partition former /boot ext3 partition, which i can read fine, but which doesn't have the data i want. I've got some data on an lvm volume /dev/hd*2 which contains two partitions within it's volume, the last one which i believe is swap and the first one which was a former / filesystem and has data on it i am trying to obtain. Using fdisk i can read that it's linux-lvm, but i can't get mount to read it.
I may have misunderstood you, but partitions that show up as "LVM" when you use fdisk are not meant to be mounted. LVM is a bit more complex, that partition is in lvmspeak a PV (Physical Volume). The next layer up is the VG layer (Volume Groups). A VG can be made up out of one or more PVs. And then finally, the topmost layer, LV (Logical Volumes). LVs are the actual block devices that you use (where filesystems live, what you mount etc.). You can have many LVs in a VG and they can span several PVs.
To find out which LVs you can mount run lvdisplay. You then typically mount it like "mount /dev/VGNAME/LVNAME /mountpoint".
All that said, please do read up on how LVM works.
/Peter