⑴Physical extent to ：
⑵--- Physical volume ---
⑶PV Name /dev/sda
⑷VG Name liuhg_disk
⑸PV Size . MiB / not usable . MiB
⑹Allocatable yes （but full
⑺PE Size . MiB
⑻Total PE
⑼Free PE
⑽Allocated PE
⑾PV UUID avJQaA-oMKt-NEoJ-ojBK-Csc-dca-mhUe
⑿--- Physical Segments ---
⒀Physical extent to ：
⒁Logical volume /dev/liuhg_disk/home
⒂Logical extents to
⒃--- Physical volume ---
⒄PV Name /dev/sda
⒅VG Name liuhg_disk
⒆PV Size . MiB / not usable . MiB
⒇Allocatable yes （but full
⒈PE Size . MiB
⒉Total PE
⒊Free PE
⒋Allocated PE
⒌PV UUID JlMIAF-An-MHA-ZLXf-dnS-pfZr-YeQsKT
⒍--- Physical Segments ---
⒎Physical extent to ：
⒏Logical volume /dev/liuhg_disk/home
⒐Logical extents to
⒑--- Physical volume ---
⒒PV Name /dev/sda
⒓VG Name liuhg_disk
⒔PV Size . MiB / not usable . MiB
⒕Allocatable yes （but full
⒖PE Size . MiB
⒗Total PE
⒘Free PE
⒙Allocated PE
⒚PV UUID xnHJNA-tDVx-dryX-KMx-gY-sptI-iUOcU
⒛--- Physical Segments ---
①Physical extent to ：
②Logical volume /dev/liuhg_disk/home
③Logical extents to
④将sda设置为离线状态：
⑤pvchange -xn /dev/sda
⑥使用pvdisplay -m
⑦……
⑧--- Physical volume ---
⑨PV Name /dev/sda
⑩VG Name liuhg_disk
ⅠPV Size . MiB / not usable . MiB
ⅡAllocatable NO 《-----表示已经关闭了该PV
ⅢPE Size . MiB
ⅣTotal PE
ⅤFree PE
ⅥAllocated PE
ⅦPV UUID Sane-nlFG-uSNR-NP-Yxa-cXRb-rEmK
Ⅷ……
Ⅸ将sda的数据移走：
Ⅹpvmove -i /dev/sda
㈠-i 是每秒钟报告一次数据迁移的进度。
㈡［rootliuhg /］# pvmove -i /dev/sda
㈢/dev/sda： Moved： .%
㈣/dev/sda： Moved： .%
㈤/dev/sda： Moved： .%
㈥重新用pvdisplay -m
㈦……
㈧--- Physical volume ---
㈨PV Name /dev/sda
㈩VG Name liuhg_disk
PV Size . MiB / not usable . MiB
Allocatable NO
PE Size . MiB
Total PE
Free PE 《----显示完全空闲和Total PE数一致
Allocated PE
PV UUID Sane-nlFG-uSNR-NP-Yxa-cXRb-rEmK
……
从卷组里把sda删除：
［rootliuhg /］# vgreduce liuhg_disk /dev/sda
Removed “/dev/sda” from volume group “liuhg_disk”
pvdisplay -m再看看吧：
--- NEW Physical volume --- 《-----还告诉你这是一个新的PV ^_^
PV Name /dev/sda
VG Name 《-----空了
PV Size . MiB
Allocatable NO
PE Size
Total PE
Free PE
Allocated PE
PV UUID Sane-nlFG-uSNR-NP-Yxa-cXRb-rEmK
到此vgdisplay -v能看到已经没有了/dev/sda了。重新挂载/home
［rootliuhg /］# mount /dev/liuhg_disk/home /home
［rootliuhg /］# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda .G M .G % /
tmpfs M M % /dev/shm
/dev/mapper/liuhg_disk-home
.G .G M % /home
进去看看数据，一个都没丢。
上面就是Linux删除LVM中的PV物理卷（硬盘或分区的介绍了，如果你在系统中安装了LCM，而又不知道如何删除其中的PV物理卷的话，可以试试文中介绍的方法。