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One thing that I see often that annoys has to do with the logical volume manager. Many people allocate their logical volumes to use the entire volume group. T
by spudlyo 17y ago
One thing that I see often that annoys has to do with the logical volume manager. Many people allocate their logical volumes to use the entire volume group. This doesn't leave any room for snapshots, which is the #1 reason I use LVM in the first place. I've had to work around this in all kinds of crazy ways in the past, like unmounting the swap partition and reformatting it as a physical volume and adding it to the volume group. After I take my snapshot and I'm through with it I'll put it back as swap.
- CyberFonic 17y agoI'm with you on that one. Especially with current crop of huge disks. Volume groups should be resources which you carve up into logical volumes. Personally, I prefer to assign a separate LV to each application, DB tablespace. I also configure LVs to the current requirements and grow them as required. Have never seen a system that grows the way you expect it to. With LVs you can also move things around without disrupting things. I often move running databases from JBOD to SAN using LV mirroring.