[root@localhost ~]#fdisk /dev/sda #创建2G分区
Command (m for help): n
All primary partitions are in use
Adding logical partition 6
First sector (320870400-419430399, default 320870400):
Using default value 320870400
Last sector, +sectors or +size{K,M,G}(320870400-419430399, default 419430399): +2G
Partition 6 of type Linux and of size 2 GiB is set
Command (m for help): w
The partition table has been altered![root@localhost ~]#fdisk -l /dev/sda #显示分区
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 211814399 104857600 83 Linux
/dev/sda3 211814400 216008703 2097152 82 Linux swap / Solaris
/dev/sda4 216008704 419430399 101710848 5 Extended
/dev/sda5 216010752 320868351 52428800 83 Linux
/dev/sda6 320870400 325064703 2097152 83 Linux
[root@localhost ~]#partprobe #同步
Warning: Unable to open /dev/sr0 read-write (Read-only file system). /dev/sr0 has been opened read-only.
[root@localhost ~]#lsblk #显示分区
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 200G 0 disk
├─sda1 8:1 0 1G 0 part /boot
├─sda2 8:2 0 100G 0 part /
├─sda3 8:3 0 2G 0 part [SWAP]
├─sda4 8:4 0 1K 0 part
├─sda5 8:5 0 50G 0 part /data
└─sda6 8:6 0 2G 0 part
sr0 11:0 1 10.3G 0 rom
[root@localhost ~]#mkfs.ext4 /dev/sda6 -b 2048 -L TEST -m 1 #创建文件系统(预留1%空间,卷标TEST,块大小2048)
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=TEST
OS type: Linux
Block size=2048 (log=1)
Fragment size=2048 (log=1)
Stride=0 blocks, Stripe width=0 blocks
131072 inodes, 1048576 blocks
10485 blocks (1.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=269484032
64 block groups
16384 blocks per group, 16384 fragments per group
2048 inodes per group
Superblock backups stored on blocks:
16384, 49152, 81920, 114688, 147456, 409600, 442368, 802816
[root@localhost ~]#blkid #查看UUID
/dev/sda1: UUID="7625098d-8371-4cb9-952c-c54aa045446b" TYPE="xfs"
/dev/sda2: UUID="35d98a35-0b61-4bd5-853b-e49e41d9e104" TYPE="xfs"
/dev/sda3: UUID="6ada3b23-3402-433c-9bfc-713319e93a43" TYPE="swap"
/dev/sda5: UUID="62eff351-958a-4207-a6b0-b997a7579c37" TYPE="xfs"
/dev/sr0: UUID="2019-09-09-19-08-41-00" LABEL="CentOS 7 x86_64" TYPE="iso9660" PTTYPE="dos"
/dev/sda6: LABEL="TEST" UUID="de54a9f5-e8fa-4a09-8171-e02017c45550" TYPE="ext4"[root@localhost ~]#mkdir /test[root@localhost ~]#cat /etc/fstab #编辑永久挂载(默认acl)
UUID=35d98a35-0b61-4bd5-853b-e49e41d9e104 / xfs defaults 0 0
UUID=7625098d-8371-4cb9-952c-c54aa045446b /boot xfs defaults 0 0
UUID=62eff351-958a-4207-a6b0-b997a7579c37 /data xfs defaults 0 0
UUID=6ada3b23-3402-433c-9bfc-713319e93a43 swap swap defaults 0 0
UUID=de54a9f5-e8fa-4a09-8171-e02017c45550 /test ext4 acl 0 0
[root@localhost ~]#echo '- - -'> /sys/class/scsi_host/host0/scan #加载硬件[root@localhost ~]#lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 200G 0 disk
├─sda1 8:1 0 1G 0 part /boot
├─sda2 8:2 0 100G 0 part /
├─sda3 8:3 0 2G 0 part [SWAP]
├─sda4 8:4 0 1K 0 part
├─sda5 8:5 0 50G 0 part /data
└─sda6 8:6 0 2G 0 part /test
sdb 8:16 0 20G 0 disk
sr0 11:0 1 10.3G 0 rom
[root@localhost ~]#fdisk /dev/sdb #分区(2个10G)
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1):
First sector (2048-41943039, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G}(2048-41943039, default 41943039): +10G
Partition 1 of type Linux and of size 10 GiB is set
Command (m for help): n
Partition type:
p primary (1 primary, 0 extended, 3 free)
e extended
Select (default p): p
Partition number (2-4, default 2):
First sector (20973568-41943039, default 20973568):
Using default value 20973568
Last sector, +sectors or +size{K,M,G}(20973568-41943039, default 41943039):
Using default value 41943039
Partition 2 of type Linux and of size 10 GiB is set
Command (m for help): w
The partition table has been altered![root@localhost ~]#lsblk /dev/sdb #显示分区
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sdb 8:16 0 20G 0 disk
├─sdb1 8:17 0 10G 0 part
└─sdb2 8:18 0 10G 0 part
[root@localhost ~]#pvcreate /dev/sdb1 #创建pv
Physical volume "/dev/sdb1" successfully created.
[root@localhost ~]#pvcreate /dev/sdb2 #创建pv
Physical volume "/dev/sdb2" successfully created.
[root@localhost ~]#vgcreate testvg /dev/sdb1 -s 16M #创建testvg(PE为16M )
Volume group "testvg" successfully created
[root@localhost ~]#vgdisplay #显示testvg
--- Volume group ---
VG Name testvg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 9.98 GiB
PE Size 16.00 MiB
Total PE 639
Alloc PE / Size 0 / 0
Free PE / Size 639 / 9.98 GiB
VG UUID qPFTmH-1akP-JmWM-bS8r-iA69-mkBZ-nnvXRX
[root@localhost ~]#vgextend testvg /dev/sdb2 #扩展testvg
Volume group "testvg" successfully extended
[root@localhost ~]#vgs #简要显示vg
VG #PV #LV #SN Attr VSize VFree
testvg 2 1 0 wz--n- <19.97g <14.97g
[root@localhost ~]#lvcreate -L 5G -n testlv testvg #创建testlv(5G)
Logical volume "testlv" created.
[root@localhost ~]#mkfs.xfs /dev/testvg/testlv #创建文件系统[root@localhost ~]#mkdir /users[root@localhost ~]#mount /dev/testvg/testlv /users #挂载