Manage Physical Volumes2022/09/13 |
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This is the basic operation of managing Physical Volumes.
It needs to create LVM type partition first. |
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| [1] | Create Physical Volume. |
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root@dlp:~#
pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully created # to create with volume size explicitly, set like follows root@dlp:~# pvcreate --setphysicalvolumesize 50G /dev/sdb1 Physical volume "/dev/sdb1" successfully created |
| [2] | Display Physical Volumes. |
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root@dlp:~# pvdisplay /dev/sdb1 "/dev/sdb1" is a new physical volume of "<80.00 GiB" --- NEW Physical volume --- 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 Yswfkh-krIC-IObT-sSYC-K4dd-8sVu-mxFEVV |
| [3] | Change size of Physical Volume. |
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# change to 50G root@dlp:~# pvresize --setphysicalvolumesize 50G /dev/sdb1
/dev/sdb1: Requested size 50.00 GiB is less than real size <80.00 GiB. Proceed? [y/n]: y
WARNING: /dev/sdb1: Pretending size is 104857600 not 167770112 sectors.
Physical volume "/dev/sdb1" changed
1 physical volume(s) resized or updated / 0 physical volume(s) not resized
root@dlp:~# pvdisplay /dev/sdb1 "/dev/sdb1" is a new physical volume of "50.00 GiB" --- NEW Physical volume --- 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 Yswfkh-krIC-IObT-sSYC-K4dd-8sVu-mxFEVV |
| [4] | Display reports of Physical Volumes. |
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root@dlp:~# pvs /dev/sdb1 PV VG Fmt Attr PSize PFree /dev/sdb1 lvm2 --- 50.00g 50.00g |
| [5] | Scan Physical Volumes. |
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root@dlp:~# pvscan PV /dev/sda3 VG ubuntu-vg lvm2 [<78.00 GiB / 1020.00 MiB free] PV /dev/sdb1 lvm2 [50.00 GiB] Total: 2 [<128.00 GiB] / in use: 1 [<78.00 GiB] / in no VG: 1 [50.00 GiB] |
| [6] | Delete Physical Volume. |
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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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