centos7磁盘重新分区怎么创建LVM并格式化-创新互联
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1、磁盘分区，两个分两个区 一个160G，一个40G
[root@mysql innodb_log]# fdisk /dev/vdb
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): p
Disk /dev/vdb: 322.1 GB, 322122547200 bytes, 629145600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x8510d8fb
Device Boot Start End Blocks Id System
/dev/vdb1 2048 209717247 104857600 83 Linux
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 (209717248-629145599, default 209717248):
Using default value 209717248
Last sector, +sectors or +size{K,M,G} (209717248-629145599, default 629145599): +160G
Partition 2 of type Linux and of size 160 GiB is set
Command (m for help): n
Partition type:
p primary (2 primary, 0 extended, 2 free)
e extended
Select (default p): p
Partition number (3,4, default 3):
First sector (545261568-629145599, default 545261568):
Using default value 545261568
Last sector, +sectors or +size{K,M,G} (545261568-629145599, default 629145599):
Using default value 629145599
Partition 3 of type Linux and of size 40 GiB is set
Command (m for help): p
Disk /dev/vdb: 322.1 GB, 322122547200 bytes, 629145600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x8510d8fb
Device Boot Start End Blocks Id System
/dev/vdb1 2048 209717247 104857600 83 Linux
/dev/vdb2 209717248 545261567 167772160 83 Linux
/dev/vdb3 545261568 629145599 41942016 83 Linux
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Syncing disks.
2、设置格式为LVM
[root@mysql innodb_log]# fdisk -l
Disk /dev/vda: 42.9 GB, 42949672960 bytes, 83886080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000be2dd
Device Boot Start End Blocks Id System
/dev/vda1 * 2048 1050623 524288 83 Linux
/dev/vda2 1050624 20971519 9960448 8e Linux LVM
/dev/vda3 20971520 83886079 31457280 5 Extended
/dev/vda5 20973568 83886079 31456256 8e Linux LVM
Disk /dev/mapper/vg01-lv01: 42.4 GB, 42404413440 bytes, 82821120 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/vdb: 322.1 GB, 322122547200 bytes, 629145600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x8510d8fb
Device Boot Start End Blocks Id System
/dev/vdb1 2048 209717247 104857600 83 Linux
/dev/vdb2 209717248 545261567 167772160 83 Linux
/dev/vdb3 545261568 629145599 41942016 83 Linux
[root@mysql innodb_log]# fdisk /dev/vdb
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): t
Partition number (1-3, default 3): 2
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): t
Partition number (1-3, default 3): 3
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Syncing disks.
[root@mysql innodb_log]# partprobe
Warning: Unable to open /dev/sr0 read-write (Read-only file system). /dev/sr0 has been opened read-only.
[root@mysql innodb_log]# fdisk -l
Disk /dev/vda: 42.9 GB, 42949672960 bytes, 83886080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000be2dd
Device Boot Start End Blocks Id System
/dev/vda1 * 2048 1050623 524288 83 Linux
/dev/vda2 1050624 20971519 9960448 8e Linux LVM
/dev/vda3 20971520 83886079 31457280 5 Extended
/dev/vda5 20973568 83886079 31456256 8e Linux LVM
Disk /dev/mapper/vg01-lv01: 42.4 GB, 42404413440 bytes, 82821120 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/vdb: 322.1 GB, 322122547200 bytes, 629145600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x8510d8fb
Device Boot Start End Blocks Id System
/dev/vdb1 2048 209717247 104857600 83 Linux
/dev/vdb2 209717248 545261567 167772160 8e Linux LVM
/dev/vdb3 545261568 629145599 41942016 8e Linux LVM
3、创建LVM
pv两个： /dev/vdb2 /dev/vdb3
vg一个对应： /dev/vdb2 /dev/vdb3
lv 一个：160G
[root@mysql innodb_log]# pvs
PV VG Fmt Attr PSize PFree
/dev/vda2 vg01 lvm2 a-- <9.50g 0
/dev/vda5 vg01 lvm2 a-- <30.00g 0
[root@mysql innodb_log]# pvcreate /dev/vdb2
WARNING: ext4 signature detected on /dev/vdb2 at offset 1080. Wipe it? [y/n]: y
Wiping ext4 signature on /dev/vdb2.
Physical volume "/dev/vdb2" successfully created.
[root@mysql innodb_log]# pvcreate /dev/vdb3
Physical volume "/dev/vdb3" successfully created.
[root@mysql innodb_log]# pvs
PV VG Fmt Attr PSize PFree
/dev/vda2 vg01 lvm2 a-- <9.50g 0
/dev/vda5 vg01 lvm2 a-- <30.00g 0
/dev/vdb2 lvm2 --- 160.00g 160.00g
/dev/vdb3 lvm2 --- <40.00g <40.00g
[root@mysql innodb_log]# fdisk -l
Disk /dev/vda: 42.9 GB, 42949672960 bytes, 83886080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000be2dd
Device Boot Start End Blocks Id System
/dev/vda1 * 2048 1050623 524288 83 Linux
/dev/vda2 1050624 20971519 9960448 8e Linux LVM
/dev/vda3 20971520 83886079 31457280 5 Extended
/dev/vda5 20973568 83886079 31456256 8e Linux LVM
Disk /dev/mapper/vg01-lv01: 42.4 GB, 42404413440 bytes, 82821120 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/vdb: 322.1 GB, 322122547200 bytes, 629145600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x8510d8fb
Device Boot Start End Blocks Id System
/dev/vdb1 2048 209717247 104857600 83 Linux
/dev/vdb2 209717248 545261567 167772160 8e Linux LVM
/dev/vdb3 545261568 629145599 41942016 8e Linux LVM
[root@mysql innodb_log]# pvs
PV VG Fmt Attr PSize PFree
/dev/vda2 vg01 lvm2 a-- <9.50g 0
/dev/vda5 vg01 lvm2 a-- <30.00g 0
/dev/vdb2 lvm2 --- 160.00g 160.00g
/dev/vdb3 lvm2 --- <40.00g <40.00g
[root@mysql innodb_log]# vgcreate vgdata01 /dev/vdb2 /dev/vdb3
Volume group "vgdata01" successfully created
[root@mysql innodb_log]# vgs
VG #PV #LV #SN Attr VSize VFree
vg01 2 1 0 wz--n- 39.49g 0
vgdata01 2 0 0 wz--n- 199.99g 199.99g
[root@mysql innodb_log]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
lv01 vg01 -wi-ao---- 39.49g
[root@mysql innodb_log]# lvcreate -L 160G -n lv02 vgdata01
Logical volume "lv02" created.
[root@mysql innodb_log]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
lv01 vg01 -wi-ao---- 39.49g
lv02 vgdata01 -wi-a----- 160.00g
[root@mysql innodb_log]# lvdisplay
--- Logical volume ---
LV Path /dev/vgdata01/lv02
LV Name lv02
VG Name vgdata01
LV UUID d2tSRE-tDF6-zPDV-0ACU-Qz9I-BUJJ-jPRoT1
LV Write Access read/write
LV Creation host, time mysql.novalocal, 2020-02-26 13:11:12 +0800
LV Status available
# open 0
LV Size 160.00 GiB
Current LE 40960
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Logical volume ---
LV Path /dev/vg01/lv01
LV Name lv01
VG Name vg01
LV UUID pErBl0-TR5d-xPSz-CYfY-hT3V-7FWp-QRPbAf
LV Write Access read/write
LV Creation host, time localhost, 2019-09-16 19:31:11 +0800
LV Status available
# open 1
LV Size 39.49 GiB
Current LE 10110
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
4、格式化
[root@mysql innodb_log]# mkfs.ext4 /dev/vgdata01/lv02
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
10485760 inodes, 41943040 blocks
2097152 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2189426688
1280 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, 7962624, 11239424, 20480000, 23887872
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
5、写入启动文件
[root@mysql innodb_log]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg01-lv01 39G 4.8G 33G 13% /
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.7M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/vda1 509M 140M 370M 28% /boot
tmpfs 1.6G 0 1.6G 0% /run/user/0
/dev/vdb1 99G 5.3G 89G 6% /data
overlay 39G 4.8G 33G 13% /var/lib/docker/overlay2/a8b63ab12a60dbd0e16dbbd62dd4aa1d073b6092e35f95f6b59b7f0b57dd4aee/merged
[root@mysql innodb_log]# mkdir /data1
mkdir: cannot create directory ‘/data1’: File exists
[root@mysql innodb_log]# vi /etc/fstab
UUID=fa26d131-a86c-432e-9f59-091033663fdb /vdb1 ext4 defaults 0 0
#
# /etc/fstab
# Created by anaconda on Mon Sep 16 19:31:12 2019
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/vg01-lv01 / ext4 defaults 1 1
UUID=9916da56-b2a1-4df1-9775-24e4103eea3a /boot xfs defaults 0 0
UUID=fa26d131-a86c-432e-9f59-091033663fdb /vdb1 ext4 defaults 0 0
/dev/vgdata01/lv02 /data1 ext4 defaults 0 0
~
~
~
~
"/etc/fstab" 12L, 503C written
6、挂载
[root@mysql innodb_log]# mount /dev/vgdata01/lv02 /data1
[root@mysql innodb_log]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg01-lv01 39G 4.8G 33G 13% /
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.7M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/vda1 509M 140M 370M 28% /boot
tmpfs 1.6G 0 1.6G 0% /run/user/0
/dev/vdb1 99G 5.3G 89G 6% /data
overlay 39G 4.8G 33G 13% /var/lib/docker/overlay2/a8b63ab12a60dbd0e16dbbd62dd4aa1d073b6092e35f95f6b59b7f0b57dd4aee/merged
/dev/mapper/vgdata01-lv02 158G 61M 150G 1% /data1
[root@mysql innodb_log]#
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