Removing physical volumes from a volume group

LVM HOWTO
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# 11.6. Removing physical volumes from a volume group

Make sure that the physical volume isn't used by any logical volumes by using then 'pvdisplay' command:

    # pvdisplay /dev/hda1

    --- Physical volume ---
    PV Name               /dev/hda1
    VG Name               myvg
    PV Size               1.95 GB / NOT usable 4 MB [LVM: 122 KB]
    PV#                   1
    PV Status             available
    Allocatable           yes (but full)
    Cur LV                1
    PE Size (KByte)       4096
    Total PE              499
    Free PE               0
    Allocated PE          499
    PV UUID               Sd44tK-9IRw-SrMC-MOkn-76iP-iftz-OVSen7

If the physical volume is still used you will have to migrate the data to another physical volume using pvmove.

Then use 'vgreduce' to remove the physical volume:

    # vgreduce my_volume_group /dev/hda1

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