Moving Extents to Existing Physical Volumes and remove phisical disk
Moving Extents to Existing Physical Volumes
In this example, the logical volume is distributed across four physical volumes in the volume group
myvg.# pvs -o+pv_used
PV VG Fmt Attr PSize PFree Used
/dev/sda1 myvg lvm2 a- 17.15G 12.15G 5.00G
/dev/sdb1 myvg lvm2 a- 17.15G 12.15G 5.00G
/dev/sdc1 myvg lvm2 a- 17.15G 12.15G 5.00G
/dev/sdd1 myvg lvm2 a- 17.15G 2.15G 15.00G
This examples moves the extents off of
1. If there are enough free extents on the other physical volumes in the volume group, you can execute the
/dev/sdb1 so that it can be removed from the volume group.1. If there are enough free extents on the other physical volumes in the volume group, you can execute the
pvmove command on the device you want to remove with no other options and the extents will be distributed to the other devices.# pvmove /dev/sdb1
/dev/sdb1: Moved: 2.0%
...
/dev/sdb1: Moved: 79.2%
...
/dev/sdb1: Moved: 100.0%
After the
pvmove command has finished executing, the distribution of extents is as follows:# pvs -o+pv_used
PV VG Fmt Attr PSize PFree Used
/dev/sda1 myvg lvm2 a- 17.15G 7.15G 10.00G
/dev/sdb1 myvg lvm2 a- 17.15G 17.15G 0
/dev/sdc1 myvg lvm2 a- 17.15G 12.15G 5.00G
/dev/sdd1 myvg lvm2 a- 17.15G 2.15G 15.00G
Use the
vgreduce command to remove the physical volume /dev/sdb1 from the volume group.# vgreduce myvg /dev/sdb1
Removed "/dev/sdb1" from volume group "myvg"
# pvs
PV VG Fmt Attr PSize PFree
/dev/sda1 myvg lvm2 a- 17.15G 7.15G
/dev/sdb1 lvm2 -- 17.15G 17.15G
/dev/sdc1 myvg lvm2 a- 17.15G 12.15G
/dev/sdd1 myvg lvm2 a- 17.15G 2.15G
The disk can now be physically removed or allocated to other users.
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