# vgdisplay --- Volume group --- VG Name vg1 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 2 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size 1.02 TiB PE Size 4.00 MiB Total PE 267301 Alloc PE / Size 10239 / 40.00 GiB Free PE / Size 257062 / 1004.15 GiB VG UUID Kxd02t-mFtJ-nThA-Lciy-zI2A-Dwzq-2nJoVh
vgextend vg1 /dev/sdb3
# vgdisplay --- Volume group --- VG Name vg1 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 2 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size 1.02 TiB PE Size 4.00 MiB Total PE 267301 Alloc PE / Size 10239 / 40.00 GiB Free PE / Size 257062 / 1004.15 GiB VG UUID Kxd02t-mFtJ-nThA-Lciy-zI2A-Dwzq-2nJoVh # vgs VG #PV #LV #SN Attr VSize VFree vg1 1 1 0 wz--n- 1.02t 1004.15g # vgextend vg1 /dev/sdb3 No physical volume label read from /dev/sdb3 Physical volume "/dev/sdb3" successfully created Volume group "vg1" successfully extended # vgdisplay --- Volume group --- VG Name vg1 System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 0 Max PV 0 Cur PV 2 Act PV 2 VG Size 1.51 TiB PE Size 4.00 MiB Total PE 395303 Alloc PE / Size 10239 / 40.00 GiB Free PE / Size 385064 / 1.47 TiB VG UUID Kxd02t-mFtJ-nThA-Lciy-zI2A-Dwzq-2nJoVh # vgs VG #PV #LV #SN Attr VSize VFree vg1 2 1 0 wz--n- 1.51t 1.47t # pvdisplay --- Physical volume --- PV Name /dev/sdb4 VG Name vg1 PV Size 1.02 TiB / not usable 4.90 MiB Allocatable yes PE Size 4.00 MiB Total PE 267301 Free PE 257062 Allocated PE 10239 PV UUID g2xLQ8-7tgm-iNZc-8dVq-vo3z-CFJp-LryYAs --- Physical volume --- PV Name /dev/sdb3 VG Name vg1 PV Size 500.01 GiB / not usable 1.12 MiB Allocatable yes PE Size 4.00 MiB Total PE 128002 Free PE 128002 Allocated PE 0 PV UUID 77RRJm-e4iz-Zfos-ZYHT-XEBa-AZ7D-Yd7fdU
# vgreduce vg1 /dev/sdb3 Removed "/dev/sdb3" from volume group "vg1" # pvdisplay --- Physical volume --- PV Name /dev/sdb4 VG Name vg1 PV Size 1.02 TiB / not usable 4.90 MiB Allocatable yes PE Size 4.00 MiB Total PE 267301 Free PE 257062 Allocated PE 10239 PV UUID g2xLQ8-7tgm-iNZc-8dVq-vo3z-CFJp-LryYAs "/dev/sdb3" is a new physical volume of "500.01 GiB" --- NEW Physical volume --- PV Name /dev/sdb3 VG Name PV Size 500.01 GiB Allocatable NO PE Size 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID 77RRJm-e4iz-Zfos-ZYHT-XEBa-AZ7D-Yd7fdU
原文出处：Netkiller 系列 手札
本文作者：陈景峯
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