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Physical Volume
2011/05/09 |
| [1] | Create a Physical Volume |
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[root@dlp ~]# pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully created # input like below if you'd like to specify the amount [root@dlp ~]# pvcreate --setphysicalvolumesize 50G /dev/sdb1 Physical volume "/dev/sdb1" successfully created |
| [2] | Display a status of Physical volumes |
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[root@dlp ~]# pvdisplay /dev/sdb1 --- NEW Physical volume --- PV Name /dev/sdb1 VG Name PV Size 50.00 GiB Allocatable NO PE Size (KByte) 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID hPjJK2-tEgt-RztW-CLLH-NYR3-4t4a-hNt6qT |
| [3] | Change size of a Physical volume |
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# change size to 100G [root@dlp ~]# pvresize --setphysicalvolumesize 100G /dev/sdb1 Physical volume "/dev/sdb1" changed 1 physical volume(s) resized / 0 physical volume(s) not resized [root@dlp ~]# pvdisplay /dev/sdb1 --- NEW Physical volume --- PV Name /dev/sdb1 VG Name PV Size 100.00 GB # changed Allocatable NO PE Size (KByte) 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID hPjJK2-tEgt-RztW-CLLH-NYR3-4t4a-hNt6qT |
| [4] | Output reports of Physical volumes |
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[root@dlp ~]# pvs /dev/sdb1 PV VG Fmt Attr PSize PFree /dev/sdb1 lvm2 a- 100.00G 100.00G |
| [5] | Scan Physical volumes |
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[root@dlp ~]# pvscan /dev/sdb1 PV /dev/sda2 vg_dlp lvm2 [29.51 GiB / 0 free] PV /dev/sdb1 lvm2 [100.00 GiB] Total: 2 [44.51 GiB] / in use: 1 [29.51 GiB] / in no VG: 1 [100.00 GiB] |
| [6] | Remove a Physical volume |
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[root@dlp ~]# pvremove /dev/sdb1 Labels on physical volume "/dev/sdb1" successfully wiped [root@dlp ~]# pvdisplay /dev/sdb1 No physical volume label read from /dev/sdb1 # none Failed to read physical volume "/dev/sdb1" |