大佬教程收集整理的这篇文章主要介绍了CentOS 7 删除LV VG卷组逻辑卷物理卷，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
@H_419_6@按如下操作
@H_419_6@查看卷组相关信息
[[email protected] ~]# vgscan Reading all physical volumes. This may take a while... Found volume group "Xvdbgroup" using Metadata type lvm2 Found volume group "centos" using Metadata type lvm2@H_419_6@查看卷组VolGroup00包含的PV、LV信息。
[[email protected] ~]# vgdisplay -v Xvdbgroup Using volume group(s) on command line. --- Volume group --- VG Name Xvdbgroup 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 1 Max PV 0 Cur PV 1 Act PV 1 VG Size 30.00 GiB PE Size 4.00 MiB @R_817_10586@l PE 7679 Alloc PE / Size 7655 / 29.90 GiB Free PE / Size 24 / 96.00 MiB VG UUID PBc5Xq-pQ61-L618-h8Nd-31oE-RmuB-qlaEyv --- Logical volume --- LV Path /dev/Xvdbgroup/xvdb1 LV Name xvdb1 VG Name Xvdbgroup LV UUID vgJbGW-UZAe-zM8y-HRcE-c5f6-PKpk-mh3lPU LV Write Access read/write LV Creation host,time MyCloudServer,2018-12-09 20:12:17 +0800 LV Status available # open 1 LV Size 29.90 GiB Current LE 7655 Segments 1 AlLOCATIOn inherit Read ahead sectors auto - currently set to 8192 Block device 253:2 --- Physical volumes --- PV Name /dev/xvdb1 PV UUID ht2z0o-yINv-08WR-crWy-oeff-PXh6-IOGbMK PV Status allocatable @R_817_10586@l PE / Free PE 7679 / 24@H_419_6@卸载卷组上的逻辑卷LV
[[email protected] ~]# umount /dev/Xvdbgroup/xvdb1@H_419_6@删除逻辑卷LV
[[email protected] ~]# lvremove /dev/Xvdbgroup/xvdb1 Do you really want to remove active logical volume xvdb1? [y/n]: y Logical volume "xvdb1" successfully removed@H_419_6@删除卷组VG
[[email protected] ~]# vgremove Xvdbgroup Volume group "Xvdbgroup" successfully removed@H_419_6@验证卷组（VG）是否删除 剩下centos 卷组是对的
[[email protected] ~]# vgscan Reading all physical volumes. This may take a while... Found volume group "centos" using Metadata type lvm2@H_419_6@删除物理卷PV
[[email protected] ~]# pvremove /dev/xvdb1 Labels on physical volume "/dev/xvdb1" successfully wiped@H_419_6@编辑 /etc/fstab 删除对应挂载点信息
[[email protected] ~]# nano /etc/fstab -bash: nano: command not found [[email protected] ~]# yum install nano@H_419_6@ 看到/etc/fstab里面没有什么需要删的，Ctrl+C退出nano不用保存，
[[email protected] ~]# mkfs.ext4 /dev/xvdb mke2fs 1.42.9 (28-Dec-2013) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks,Stripe width=0 blocks 1966080 inodes,7864320 blocks 393216 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=2155872256 240 block groups 32768 blocks per group,32768 fragments per group 8192 inodes per group Superblock BACkups stored on blocks: 32768,98304,163840,229376,294912,819200,884736,1605632,2654208,4096000 Allocating group tables: done WriTing inode tables: done CreaTing journal (32768 blocks): done WriTing superblocks and filesystem accounTing information: done@H_419_6@接下来就可以用一健脚本完成挂载
yum install wget -y && wget -O auto_disk.sh http://download.bt.cn/tools/auto_disk.sh && bash auto_disk.sh@H_419_6@可以查看df 和nano /etc/fstab 有没有成功，成功了就可以reboot了
@H_419_6@下次重装时只选择格式化系统盘，再次挂载数据@L_855_43@mkdir /wwwmount /dev/xvdb1 /wwwecho "/dev/xvdb1 /www ext4 defaults 1 3" >> /etc/fstab以上命令可以重新挂载/www分区，如果你是小白，数据很重要，建议备份了再试。
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