Moving Extents to a New Disk
57
/dev/sdc1 myvg lvm2 a- 17.15G 12.15G 5.00G
/dev/sdd1 myvg lvm2 a- 17.15G 2.15G 15.00G
We want to move the extents off of
/dev/sdb1
so that we can remove it from the volume group.
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.
[root@tng3-1 ~]#
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:
[root@tng3-1]#
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.
[root@tng3-1 ~]#
vgreduce myvg /dev/sdb1
Removed "/dev/sdb1" from volume group "myvg"
[root@tng3-1 ~]# 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.
5.4.2. Moving Extents to a New Disk
In this example, the logical volume is distributed across three physical volumes in the volume group
myvg
as follows:
[root@tng3-1]#
pvs -o+pv_used
PV VG Fmt Attr PSize PFree Used
/dev/sda1 myvg lvm2 a- 17.15G 7.15G 10.00G
Summary of Contents for CLUSTER SUITE 4.7 - CLUSTER LVM ADMINISTRATORS
Page 1: ...Red Hat Cluster Suite 4 7 Cluster Logical Volume Manager LVM Administrator s Guide ...
Page 6: ...vi ...
Page 12: ...xii ...
Page 24: ...12 ...
Page 62: ...50 ...
Page 72: ...60 ...
Page 82: ...70 ...
Page 84: ...72 ...
Page 86: ...74 ...
Page 96: ...84 ...
Page 103: ...91 Appendix E Revision History Revision History Revision 1 0 ...
Page 104: ...92 ...
Page 108: ...96 ...