Manage Phisical Volumes2015/07/18 |
This is the basic operation of managing Phisical Volumes.
It needs to create LVM type partiton first. |
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[1] | Create Phisical Volume. |
[root@dlp ~]#
pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully created # specify like follows if you'd like to specify volume size [root@dlp ~]# pvcreate --setphysicalvolumesize 50G /dev/sdb1 Physical volume "/dev/sdb1" successfully created |
[2] | Display Phisical Volumes. |
[root@dlp ~]# pvdisplay /dev/sdb1 PV Name /dev/sdb1 VG Name PV Size 80.00 GiB Allocatable NO PE Size 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID PJnOPg-9KwO-5xJz-Z8tn-9zP7-VKn5-ADrGzy |
[3] | Change size of Phisical Volume. |
# change to 50G [root@dlp ~]# pvresize --setphysicalvolumesize 50G /dev/sdb1 Physical volume "/dev/sdb1" changed 1 physical volume(s) resized / 0 physical volume(s) not resized [root@dlp ~]# pvdisplay /dev/sdb1 PV Name /dev/sdb1 VG Name PV Size 50.00 GiB Allocatable NO PE Size 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID PJnOPg-9KwO-5xJz-Z8tn-9zP7-VKn5-ADrGzy |
[4] | Display reports of Phisical Volumes. |
[root@dlp ~]# pvs /dev/sdb1 PV VG Fmt Attr PSize PFree /dev/sdb1 lvm2 --- 80.00g 80.00g |
[5] | Scan Phisical Volumes. |
[root@dlp ~]# pvscan PV /dev/vda2 VG centos lvm2 [49.51 GiB / 0 free] PV /dev/sdb1 lvm2 [80.00 GiB] Total: 2 [129.51 GiB] / in use: 1 [49.51 GiB] / in no VG: 1 [80.00 GiB] |
[6] | Delete Phisical Volume. |
[root@dlp ~]# pvremove /dev/sdb1 Labels on physical volume "/dev/sdb1" successfully wiped [root@dlp ~]# pvdisplay /dev/sdb1 Failed to find physical volume "/dev/sdb1". |
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