linux系統中刪除邏輯卷
阿新 • • 發佈:2020-10-29
在生產環境中想要重新部署LVM或者不再需要使用LVM時,則需要執行LVM的刪除操作。為此,需要提前備份好重要的資料,
然後依次刪除邏輯卷、卷組、物理劵裝置,順序不可顛倒。
1、檢視物理劵、卷組、邏輯卷
[root@linuxprobe dev]# pvdisplay | head -n 3
--- Physical volume ---
PV Name /dev/sdb
VG Name vgtest1
[root@linuxprobe dev]# vgdisplay | head -n 3
--- Volume group ---
VG Name vgtest1
System ID
[root@linuxprobe dev]# lvdisplay | head -n 3
--- Logical volume ---
LV Path /dev/vgtest1/lvtest1
LV Name lvtest1
2、解除安裝邏輯卷的掛載
[root@linuxprobe dev]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 18G 2.9G 15G 17% /
devtmpfs 985M 0 985M 0% /dev
tmpfs 994M 80K 994M 1% /dev/shm
tmpfs 994M 8.8M 986M 1% /run
tmpfs 994M 0 994M 0% /sys/fs/cgroup
/dev/sda1 497M 119M 379M 24% /boot
/dev/sr0 3.5G 3.5G 0 100% /run/media/root/RHEL-7.0 Server.x86_64
/dev/mapper/vgtest1-lvtest1 93M 1.6M 85M 2% /linuxprobe
[root@linuxprobe dev]# umount /linuxprobe/ ## 解除安裝
[root@linuxprobe dev]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 18G 2.9G 15G 17% /
devtmpfs 985M 0 985M 0% /dev
tmpfs 994M 80K 994M 1% /dev/shm
tmpfs 994M 8.8M 986M 1% /run
tmpfs 994M 0 994M 0% /sys/fs/cgroup
/dev/sda1 497M 119M 379M 24% /boot
/dev/sr0 3.5G 3.5G 0 100% /run/media/root/RHEL-7.0 Server.x86_64
3、刪除邏輯卷
[root@linuxprobe dev]# lvremove /dev/vgtest1/lvtest1
Do you really want to remove active logical volume lvtest1? [y/n]: y
Logical volume "lvtest1" successfully removed
4、刪除卷組(不需要絕對路徑)
[root@linuxprobe dev]# vgremove vgtest1
Volume group "vgtest1" successfully removed
5、刪除物理劵
[root@linuxprobe dev]# pvremove /dev/sdb /dev/sdc
Labels on physical volume "/dev/sdb" successfully wiped
Labels on physical volume "/dev/sdc" successfully wiped
6、檢視物理劵、卷組、邏輯卷
[root@linuxprobe dev]# pvdisplay | head -n 3 ## 預設的???
--- Physical volume ---
PV Name /dev/sda2
VG Name rhel
[root@linuxprobe dev]# vgdisplay | head -n 3
--- Volume group ---
VG Name rhel
System ID
[root@linuxprobe dev]# lvdisplay | head -n 3
--- Logical volume ---
LV Path /dev/rhel/swap
LV Name swap