LVM Disk Replacement

Replacing a working non-rootvg Physical Volume

1. Install and configure the new physical volume.
2. Add the new physical volume to the volume group.
   1. # extendvg <vg_name> <new_hdisk#>
3. Migrate the logical volumes to the new physical volume.
   1. # migratepv <old_hdisk#> <new_hdisk#>
4. Remove the old physical volume from the volume group.
   1. # reducevg <vg_name> <old_hdisk#>
5. Remove the old physical volume from the system.

Replacing a non-rootvg mirrored Physical Volume

1. Break the mirror.
   1. # unmirrorvg <vg_name> <old_hdisk#>
2. Remove the disk from the volume group.
   1. # reducevg <vg_name> <old_hdisk#>
3. Remove the old physical volume from the system.
4. Install and configure the new physical volume.
5. Add the new disk to the volume group.
   1. # extendvg <vg_name> <new_hdisk#>
6. Mirror the volume group (syn in background, ensuring a copy on each disk).
   1. # mirrorvg -S -c2 <vg_name> <new_hdisk#>
7. Synchronize the volume group.
   1. # syncvg -v <vg_name>

Further Reading

1. IBM pSeries and AIX Information Center