查看卷组相关信息
- [root@localhost /]# vgscan
- Reading all physical volumes. This may take a while...
- Found volume group "VolGroup00" using metadata type lvm2
查看卷组VolGroup00包含的PV、LV信息。
- [root@localhost /]# vgdisplay -v VolGroup00
- Using volume group(s) on command line
- Finding volume group "VolGroup00"
- --- Volume group ---
- VG Name VolGroup00
- 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 1.01 GiB
- PE Size 8.00 MiB
- Total PE 129
- Alloc PE / Size 100 / 800.00 MiB
- Free PE / Size 29 / 232.00 MiB
- VG UUID Cug510-pQb6-RELO-lb1K-zjbt-3f62-jQLoQp
- --- Logical volume ---
- LV Path /dev/VolGroup00/iscsi00
- LV Name iscsi00
- VG Name VolGroup00
- LV UUID tE78D6-5kJf-0HOh-4jRX-oLhI-ehyR-XhMmMQ
- LV Write Access read/write
- LV Creation host, time localhost.iscsi, 2017-01-19 14:25:40 +0800
- LV Status available
- # open 0
- LV Size 800.00 MiB
- Current LE 100
- Segments 1
- Allocation inherit
- Read ahead sectors auto
- - currently set to 256
- Block device 253:0
- --- Physical volumes ---
- PV Name /dev/sda7
- PV UUID OWz0uw-gTR1-WylF-z6HW-cgpe-LLd9-2W8Q9g
- PV Status allocatable
- To编辑/etc/fstab,删除对应挂载信息tal PE / Free PE 129 / 29
卸载卷组上的逻辑卷LV
要卸载对应卷组VG的所有逻辑卷LV。从上面的信息可以看出对应的卷组VolGroup00只有/dev/VolGroup00/iscsi00这个逻辑卷LV
- [root@localhost /]# umount /dev/VolGroup00/iscsi00
如果还用进程在使用对应逻辑卷的文件,就必须强制卸载挂接点(#df -Th 查看)。
删除逻辑卷LV
- [root@localhost /]# lvremove /dev/VolGroup00/iscsi00
- Do you really want to remove active logical volume iscsi00? [y/n]: y
- Logical volume "iscsi00" successfully removed
- [root@localhost /]#
如果删除提示出错,那么检查下当前使用该逻辑卷的进程,然后结束该进程或者服务即可。
验证LV是否删除
- [root@localhost /]# lvdisplay | grep "dev/VolGroup00/iscsi00"
删除卷组VG
- [root@localhost /]# vgremove VolGroup00
- Volume group "VolGroup00" successfully removed
- [root@localhost /]#
如果采用安全的方式删除卷组VG,则必须使用 vgchange -a n VolGroup00 将其关闭,然后再删除它。
- [root@localhost /]# vgchange -a n VolGroup00
- 0 logical volume(s) in volume group "VolGroup00" now active
- [root@localhost /]# vgremove VolGroup00
- Volume group "VolGroup00" successfully removed
- [root@localhost /]#
验证卷组(VG)是否删除
- [root@localhost /]# vgscan
- Reading all physical volumes. This may take a while...
- No volume groups found
- [root@localhost /]#
删除物理卷PV
- [root@localhost /]# pvremove /dev/sda7
- Labels on physical volume "/dev/sda7" successfully wiped
- [root@localhost /]# pvscan
- No matching physical volumes found
- [root@localhost /]#