linux创建lvm挂载到指定目录 linux系统下创建lvm挂载到指定目录的操作步骤
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1 、背景
在企业中有时我们为方便安装软件、数据的管理，需要把安装软件、数据放到固定目录下，磁盘满了方便扩展，这里假如需要一个/data目录存放数据，并单独进行挂载。
2、操作步骤
2.1 划分磁盘
2.2 创建PV
[root@centos-6 ~]# pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully created
扫描系统PV可以使用pvscan查看新建的PV
[root@centos-6 ~]# pvscan PV /dev/sda2 VG VolGroup lvm2 [19.51 GiB / 0 free] PV /dev/sdb1 lvm2 [10.00 GiB] Total: 2 [29.51 GiB] / in use: 1 [19.51 GiB] / in no VG: 1 [10.00 GiB]
2.3 创建VG
[root@centos-6 ~]# vgcreate vgtest /dev/sdb1 Volume group "vgtest" successfully created
注释：vgtest 为VG的名称
扫描vg
[root@centos-6 ~]# vgscan Reading all physical volumes. This may take a while... Found volume group "vgtest" using metadata type lvm2 Found volume group "VolGroup" using metadata type lvm2
查看vg
[root@centos-6 ~]# vgdisplay --- Volume group --- VG Name vgtest 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 10.00 GiB PE Size 4.00 MiB Total PE 2560 Alloc PE / Size 0 / 0 Free PE / Size 2560 / 10.00 GiB VG UUID 59Z2ML-CEzB-PivW-zNq9-2kbv-hscJ-drFdR9 --- Volume group --- VG Name VolGroup System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 1 Act PV 1 VG Size 19.51 GiB PE Size 4.00 MiB Total PE 4994 Alloc PE / Size 4994 / 19.51 GiB Free PE / Size 0 / 0 VG UUID UPJDXo-8RjG-muVj-nVnt-hjXI-aZVv-uGGc2x
2.4 创建LV
[root@centos-6 ~]# lvcreate -l 2560 -n lvdata vgtest Logical volume "lvdata" created.
2.5 格式化创建的LV
[root@centos-6 ~]# mkfs -t ext4 /dev/vgtest/lvdata mke2fs 1.41.12 (17-May-2010) 文件系统标签= 操作系统:Linux 块大小=4096 (log=2) 分块大小=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 655360 inodes, 2621440 blocks 131072 blocks (5.00%) reserved for the super user 第一个数据块=0 Maximum filesystem blocks=2684354560 80 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
正在写入inode表: 完成
Creating journal (32768 blocks): 完成 Writing superblocks and filesystem accounting information: 完成 This filesystem will be automatically checked every 39 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override.
2.6 创建目录并挂载
创建目录：
[root@centos-6 ~]# mkdir -p /data
挂载目录
[root@centos-6 ~]# mount /dev/vgtest/lvdata /data
查看
[root@centos-6 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup-lv_root 18G 4.9G 12G 30% / tmpfs 125M 72K 125M 1% /dev/shm /dev/sda1 477M 37M 416M 9% /boot /dev/mapper/vgtest-lvdata 9.8G 23M 9.2G 1% /data
2.7 设置开机挂载
[root@centos-6 ~]# vi /etc/fstab # # /etc/fstab # Created by anaconda on Sat Feb 3 00:44:14 2018 # # 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/VolGroup-lv_root / ext4 defaults 1 1 UUID=49120546-3d8d-4b2e-8559-448613dc072a /boot ext4 defaults 1 2 /dev/mapper/VolGroup-lv_swap swap swap defaults 0 0 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0 /dev/mapper/vgtest-lvdata /data ext4 defaults 0 0
总结
以上所述是小编给大家介绍的linux系统下创建lvm挂载到指定目录的操作步骤，希望对大家有所帮助，如果大家有任何疑问欢迎给我留言，小编会及时回复大家的！
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