物理卷-》卷组-》逻辑卷
添加分区
Command (m for help): n
All primary partitions are in use
Adding logical partition 9
First sector (50341888-62914559, default 50341888):
Using default value 50341888
Last sector, +sectors or +size{K,M,G} (50341888-62914559, default 62914559): +1G
Partition 9 of type Linux and of size 1 GiB is set
修改分区格式
Command (m for help): t
Partition number (1-9, default 9): 9
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): p
/dev/sda7 46143488 48240639 1048576 8e Linux LVM
/dev/sda8 48242688 50339839 1048576 8e Linux LVM
/dev/sda9 50341888 52439039 1048576 8e Linux LVM
保存退出
Command (m for help): w
系统识别:
[root@localhost Desktop]# partprobe
创建物理卷:
[root@localhost Desktop]# pvcreate /dev/sda{8,9}
Physical volume "/dev/sda8" successfully created
Physical volume "/dev/sda9" successfully created
详细查看
[root@localhost Desktop]# pvdisplay
"/dev/sda8" is a new physical volume of "1.00 GiB"
--- NEW Physical volume ---
PV Name /dev/sda8
VG Name
PV Size 1.00 GiB
Allocatable NO
PE Size 0 PE大小显示为0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID ttpcEb-kAXo-hbJP-wzRq-Xzr5-Ggu4-O0K9Jm
查看个数
[root@localhost Desktop]# pvscan
PV /dev/sda8 lvm2 [1.00 GiB]
PV /dev/sda9 lvm2 [1.00 GiB]
Total: 2 [2.00 GiB] / in use: 0 [0 ] / in no VG: 2 [2.00 GiB]
删除物理卷
[root@localhost Desktop]# pvremove /dev/sda{9,8}
Labels on physical volume "/dev/sda9" successfully wiped
Labels on physical volume "/dev/sda8" successfully wiped
创建查看卷组
[root@localhost Desktop]# vgcreate -s 8M myvg /dev/sda{8,9}
Volume group "myvg" successfully created
[root@localhost Desktop]# vgs
VG #PV #LV #SN Attr VSize VFree
myvg 2 0 0 wz--n- 1.98g 1.98g
添加删除卷组
[root@localhost Desktop]# vgreduce myvg /dev/sda8
Removed "/dev/sda8" from volume group "myvg"
[root@localhost Desktop]# vgextend myvg /dev/sda10
Physical volume "/dev/sda10" successfully created
Volume group "myvg" successfully extended
创建查看逻辑卷
[root@localhost Desktop]# lvcreate -n testlv -L 1G myvg
WARNING: dos signature detected on /dev/myvg/testlv at offset 510. Wipe it? [y/n]: y
Wiping dos signature on /dev/myvg/testlv.
Logical volume "testlv" created.
[root@localhost Desktop]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
testlv myvg -wi-a----- 1.00g
删除逻辑卷
[root@localhost Desktop]# lvremove /dev/myvg/testlv
Do you really want to remove active logical volume testlv? [y/n]: y
Logical volume "testlv" successfully removed
格式化,挂载
[root@localhost Desktop]# mount /dev/myvg/testlv test7
[root@localhost Desktop]# ls /test7
ls: cannot access /test7: No such file or directory
[root@localhost Desktop]# ls test7/
lost+found
创建快照卷
[root@localhost Desktop]# cp test6 test7
[root@localhost Desktop]# ls test7
lost+found test6
[root@localhost Desktop]# lvcreate -s -p r -L 20M -n testlv-na /dev/myvg/testlv
Rounding up size to full physical extent 24.00 MiB
Logical volume "testlv-na" created.
挂载快照卷
[root@localhost Desktop]# mkdir test8
[root@localhost Desktop]# mount /dev/myvg/testlv test8
[root@localhost Desktop]# ls test8
lost+found test6
[root@localhost Desktop]#
必须删除快照卷才可以增加逻辑卷 物理增加
[root@localhost Desktop]# lvextend -L +200M /dev/myvg/testlv
Size of logical volume myvg/testlv changed from 1.00 GiB (128 extents) to 1.20 GiB (153 extents).
Logical volume testlv successfully resized.
[root@localhost Desktop]# df -lh
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 18G 4.7G 14G 27% /
devtmpfs 475M 0 475M 0% /dev
tmpfs 489M 156K 489M 1% /dev/shm
tmpfs 489M 7.1M 482M 2% /run
tmpfs 489M 0 489M 0% /sys/fs/cgroup
/dev/sda1 297M 144M 154M 49% /boot
tmpfs 98M 28K 98M 1% /run/user/1000
/dev/mapper/myvg-testlv 976M 1.3M 924M 1% /home/hzk/Desktop/test7
逻辑增加
[root@localhost Desktop]# lvresize -p /dev/myvg/testlv
[root@localhost Desktop]# df -lh
/dev/mapper/myvg-testlv 1.2G 1.6M 1.1G 1% /home/hzk/Desktop/test7