ページ更新: 2003-12-14 (日) (5547日前)
[編集]LVを消す。 #LV (/dev/vghda/lvol1) を消し、VG (/dev/vghda) を消すには、次のようにする。 現在の構成はこうなっている: # df Filesystem Size Used Avail Use% Mounted on /dev/hda3 35G 8.4G 24G 26% / /dev/vghda/lvol1 97M 4.1M 87M 5% /mnt ちなみに、このLVは次のようにして作成した: (/dev/hda1のpartition typeを8eに設定しておく。cfdiskとかfdiskとかで) # pvcreate /dev/hda1 pvcreate -- physical volume "/dev/hda1" successfully created # vgcreate vghda /dev/hda1 vgcreate -- INFO: using default physical extent size 4 MB vgcreate -- INFO: maximum logical volume size is 255.99 Gigabyte vgcreate -- doing automatic backup of volume group "vghda" vgcreate -- volume group "vghda" successfully created and activated # lvcreate -L 100M /dev/vghda lvcreate -- doing automatic backup of "vghda" lvcreate -- logical volume "/dev/vghda/lvol1" successfully created ここで /dev/vghda/lvol1 を消すには、まずは、umountして、 # umount /mnt # df Filesystem Size Used Avail Use% Mounted on /dev/hda3 35G 8.4G 24G 26% / LVを消す。lvdisplayで状態を確認、lvremoveで消し、lvscanを実行(不要かもしれないが)。 # lvdisplay /dev/vghda/lvol1 --- Logical volume --- LV Name /dev/vghda/lvol1 VG Name vghda LV Write Access read/write LV Status available LV # 1 # open 0 LV Size 100 MB Current LE 25 Allocated LE 25 Allocation next free Read ahead sectors 120 Block device 58:0 # lvscan lvscan -- ACTIVE "/dev/vghda/lvol1" [100 MB] lvscan -- 1 logical volumes with 100 MB total in 1 volume group lvscan -- 1 active logical volumes # lvremove /dev/vghda/lvol1 lvremove -- do you really want to remove "/dev/vghda/lvol1"? [y/n]: y lvremove -- doing automatic backup of volume group "vghda" lvremove -- logical volume "/dev/vghda/lvol1" successfully removed # lvscan lvscan -- no logical volumes found VGを消す。vgdisplayで状態を確認、vgchangeで'non-active'にしてから、vgremoveで消し、vgscanでLVMの状態を更新する(不要かもしれないが)。 # vgdisplay /dev/vghda --- Volume group --- VG Name vghda VG Access read/write VG Status available/resizable VG # 0 MAX LV 256 Cur LV 0 Open LV 0 MAX LV Size 255.99 GB Max PV 256 Cur PV 1 Act PV 1 VG Size 972 MB PE Size 4 MB Total PE 243 Alloc PE / Size 0 / 0 Free PE / Size 243 / 972 MB VG UUID Z8tTn5-XUth-NN3D-BLXk-iKc0-krc5-zhYFv3 # vgscan vgscan -- reading all physical volumes (this may take a while...) vgscan -- found active volume group "vghda" vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created vgscan -- WARNING: This program does not do a VGDA backup of your volume group # vgchange -an /dev/vghda vgchange -- volume group "vghda" successfully deactivated # vgremove /dev/vghda vgremove -- volume group "vghda" successfully removed # vgscan vgscan -- reading all physical volumes (this may take a while...) vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created vgscan -- WARNING: This program does not do a VGDA backup of your volume group PV (/dev/hda1) を消すのは、cfdiskやfdiskを使う。 で、上記のVGに属しているPVってどうやって調べるの? # pvdisplay /dev/hda1 pvdisplay -- "/dev/hda1" is a new physical volume of 976.47 MB # pvscan pvscan -- reading all physical volumes (this may take a while...) pvscan -- inactive PV "/dev/hda1" is in no VG [976.47 MB] pvscan -- total: 1 [976.47 MB] / in use: 0 [0] / in no VG: 1 [976.47 MB] |