Red Hat GLOBAL FILE SYSTEM 5.0, Руководство администратора

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/dev/sdd1 myvg lvm2 a- 17.15G 2.15G
The disk can now be physically removed or allocated to other users.
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
/dev/sdb1 myvg lvm2 a- 17.15G 15.15G 2.00G
/dev/sdc1 myvg lvm2 a- 17.15G 15.15G 2.00G
We want to move the extents of
/dev/sdb1
to a new device,
/dev/sdd1
.
4.2.1. Creating the New Physical Volume
Create a new physical volume from
/dev/sdd1
.
[root@tng3-1 ~]# pvcreate /dev/sdd1
Physical volume "/dev/sdd1" successfully created
4.2.2. Adding the New Physical Volume to the Volume Group
Add
/dev/sdd1
to the existing volume group
myvg
.
[root@tng3-1 ~]# vgextend myvg /dev/sdd1
Volume group "myvg" successfully extended
[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 15.15G 2.00G
/dev/sdc1 myvg lvm2 a- 17.15G 15.15G 2.00G
/dev/sdd1 myvg lvm2 a- 17.15G 17.15G 0
4.2.3. Moving the Data
Use the
pvmove
command to move the data from
/dev/sdb1
to
/dev/sdd1
.
[root@tng3-1 ~]# pvmove /dev/sdb1 /dev/sdd1
/dev/sdb1: Moved: 10.0%
...
Chapter 5. LVM Configuration Examples
66