删除lv

author： headsen  chen

date： 2018-09-12  11:52:02

[root@sz02 ~]# umount /var/lib/docker

[root@sz02 ~]# df -h

Filesystem                  Size  Used Avail Use% Mounted on
/dev/mapper/vg_sys-lv_root  226G  .0G  224G   % /
devtmpfs                    189G       189G   % /dev
tmpfs                       189G       189G   % /dev/shm
tmpfs                       189G  9.2M  189G   % /run
tmpfs                       189G       189G   % /sys/fs/cgroup
/dev/sda1                  1016M  141M  875M  % /boot
/dev/mapper/vg_sys-lv_log    20G   99M   20G   % /var/log
/dev/mapper/vg_sys-lv_tmp  1016M   33M  983M   % /tmp
tmpfs                        38G        38G   % /run/user/

[root@sz02 ~]# lvs

  LV        VG     Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  lv_docker vg_dat -wi-a----- .19g
  lv_log    vg_sys -wi-ao----  .00g
  lv_root   vg_sys -wi-ao---- .34g
  lv_swap   vg_sys -wi-ao----  .00g
  lv_tmp    vg_sys -wi-ao----   .00g                                                    

[root@sz02 ~]# lsblk

NAME                 MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                    :     .4G   disk
├─sda1                 :         1G   part /boot
└─sda2                 :     .4G   part
  ├─vg_sys-lv_root   :     .4G   lvm  /
  ├─vg_sys-lv_swap   :        32G   lvm  [SWAP]
  ├─vg_sys-lv_log    :        20G   lvm  /var/log
  └─vg_sys-lv_tmp    :         1G   lvm  /tmp
sdb                    :    .2G   disk
  sdb1                 :    .2G   part
▽ └─vg_dat-lv_docker :     .2G   lvm  

[root@sz02 ~]# lvremove /dev/vg_dat/lv_docker

Do you really want to remove active logical volume vg_dat/lv_docker? [y/n]: y      # 手动输入y
  Logical volume "lv_docker" successfully removed

[root@sz02 ~]# vgremove /dev/vg_dat

  Volume group "vg_dat" successfully removed

[root@sz02 ~]# pvremove /dev/sdb1

  Labels on physical volume "/dev/sdb1" successfully wiped.

[root@sz02 ~]# lsblk /dev/sdb

NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sdb      :    .2G   disk
└─sdb1   :    .2G   part 

[root@sz02 ~]# mkfs -t xfs /dev/sdb1

meta-data=/dev/sdb1              isize=    agcount=, agsize= blks
         =                       sectsz=  attr=, projid32bit=
         =                       crc=        finobt=, sparse=
data     =                       bsize=   blocks=, imaxpct=
         =                       sunit=     swidth= blks
naming   =version               bsize=   ascii-ci= ftype=
log      =internal log           bsize=   blocks=, version=
         =                       sectsz=  sunit= blks, lazy-count=
realtime =none                   extsz=   blocks=, rtextents=

[root@sz02 ~]# mount /dev/sdb1 /data
[root@sz02 ~]# df -h

Filesystem                  Size  Used Avail Use% Mounted on
/dev/mapper/vg_sys-lv_root  226G  .0G  224G   % /
devtmpfs                    189G       189G   % /dev
tmpfs                       189G       189G   % /dev/shm
tmpfs                       189G  9.2M  189G   % /run
tmpfs                       189G       189G   % /sys/fs/cgroup
/dev/sda1                  1016M  141M  875M  % /boot
/dev/mapper/vg_sys-lv_log    20G   99M   20G   % /var/log
/dev/mapper/vg_sys-lv_tmp  1016M   33M  983M   % /tmp
tmpfs                        38G        38G   % /run/user/
/dev/sdb1                   894G   34M  894G   % /data

[root@sz02 ~]# touch /data/aa
[root@sz02 ~]# ls /data/aa
/data/aa
[root@sz02 ~]# vim /etc/fstab

#
# /etc/fstab
# Created by anaconda on Fri Jul  ::
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(), findfs(), mount() and/or blkid() for more info
#
/dev/mapper/vg_sys-lv_root /                       xfs     defaults
UUID=d0864981--47e0-ab1b-6ddbc5f4d1dc /boot                   xfs     defaults
/dev/mapper/vg_sys-lv_tmp /tmp                    xfs     nodev,nosuid,noexec
#/dev/mapper/vg_dat-lv_docker /var/lib/docker         xfs     defaults
/dev/sdb1 /data xfs defaults
/dev/mapper/vg_sys-lv_log /var/log                xfs     defaults
/dev/mapper/vg_sys-lv_swap swap                    swap    defaults         

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