1．为主机增加80G SCSI 接口硬盘磁盘 /dev/sdd：85.9 GB, 85899345920 字节，167772160 个扇区Units = 扇区 of 1 * 512 = 512 bytes扇区大小(逻辑/物理)：512 字节 / 512 字节I/O 大小(最小/最佳)：512 字节 / 512 字节
2．划分三个各20G的主分区 [root@localhost ~]# fdisk /dev/sdd磁盘 /dev/sdd：85.9 GB, 85899345920 字节，167772160 个扇区Units = 扇区 of 1 * 512 = 512 bytes扇区大小(逻辑/物理)：512 字节 / 512 字节I/O 大小(最小/最佳)：512 字节 / 512 字节磁盘标签类型：dos磁盘标识符：0xa5229b47
设备 Boot Start End Blocks Id System/dev/sdd1 2048 41945087 20971520 83 Linux/dev/sdd2 41945088 83888127 20971520 83 Linux/dev/sdd3 83888128 125831167 20971520 83 Linux
3．将三个主分区转换为物理卷（pvcreate），扫描系统中的物理卷[root@localhost ~]# pvcreate /dev/sdd[123] Physical volume "/dev/sdd1" successfully created. Physical volume "/dev/sdd2" successfully created. Physical volume "/dev/sdd3" successfully created.
[root@localhost ~]# pvscan PV /dev/sda2 VG centos lvm2 [<39.00 GiB / 4.00 MiB free] PV /dev/sdd1 lvm2 [20.00 GiB] PV /dev/sdd3 lvm2 [20.00 GiB] PV /dev/sdd2 lvm2 [20.00 GiB] Total: 4 [<99.00 GiB] / in use: 1 [<39.00 GiB] / in no VG: 3 [60.00 GiB]
4．使用两个物理卷创建卷组，名字为myvg，查看卷组大小[root@localhost ~]# vgcreate myvg /dev/sdd[12] Volume group "myvg" successfully created
[root@localhost ~]# vgdisplay /dev/myvg --- Volume group --- VG Name myvg System ID Format lvm2 Metadata Areas 2 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 2 Act PV 2 VG Size 39.99 GiB PE Size 4.00 MiB Total PE 10238 Alloc PE / Size 0 / 0 Free PE / Size 10238 / 39.99 GiB VG UUID TrFb0p-6NXe-sdI1-FJbp-ZuIx-UzKu-pDgGVp
5．创建逻辑卷mylv，大小为30G[root@localhost ~]# lvcreate -L 30G -n mylv myvg Logical volume "mylv" created.
6．将逻辑卷格式化成xfs文件系统，并挂载到/data目录上，创建文件测试[root@localhost ~]# mkfs.xfs /dev/myvg/mylv[root@localhost ~]# mkdir /data
[root@localhost ~]# mount /dev/myvg/mylv /data/mount: /dev/mapper/myvg-mylv 已经挂载或 /data 忙 /dev/mapper/myvg-mylv 已经挂载到 /data 上
[root@localhost ~]# df -hT文件系统 类型 容量 已用 可用 已用% 挂载点/dev/mapper/centos-root xfs 37G 9.1G 28G 25% /devtmpfs devtmpfs 897M 0 897M 0% /devtmpfs tmpfs 912M 0 912M 0% /dev/shmtmpfs tmpfs 912M 9.0M 903M 1% /runtmpfs tmpfs 912M 0 912M 0% /sys/fs/cgroup/dev/sda1 xfs 1014M 179M 836M 18% /boottmpfs tmpfs 183M 12K 183M 1% /run/user/42tmpfs tmpfs 183M 0 183M 0% /run/user/0/dev/mapper/myvg-mylv xfs 30G 33M 30G 1% /data
7．增大逻辑卷到35G[root@localhost ~]# lvextend -L +5G /dev/myvg/mylv Size of logical volume myvg/mylv changed from 30.00 GiB (7680 extents) to 35.00 GiB (8960 extents). Logical volume myvg/mylv successfully resized.
[root@localhost ~]# xfs_growfs /dev/myvg/mylv [root@localhost ~]# df -hT文件系统 类型 容量 已用 可用 已用% 挂载点/dev/mapper/centos-root xfs 37G 9.1G 28G 25% /devtmpfs devtmpfs 897M 0 897M 0% /devtmpfs tmpfs 912M 0 912M 0% /dev/shmtmpfs tmpfs 912M 9.0M 903M 1% /runtmpfs tmpfs 912M 0 912M 0% /sys/fs/cgroup/dev/sda1 xfs 1014M 179M 836M 18% /boottmpfs tmpfs 183M 12K 183M 1% /run/user/42tmpfs tmpfs 183M 0 183M 0% /run/user/0/dev/mapper/myvg-mylv xfs 35G 33M 35G 1% /data
[root@localhost ~]# lvdisplay myvg mylv --- Logical volume --- LV Path /dev/myvg/mylv LV Name mylv VG Name myvg LV UUID ApE11F-xwIR-sibN-cozj-Vfll-xhBc-e9s4to LV Write Access read/write LV Creation host, time localhost.localdomain, 2019-08-01 20:24:50 +0800 LV Status available # open 1 LV Size 35.00 GiB Current LE 8960 Segments 2 Allocation inherit Read ahead sectors auto - currently set to 8192 Block device 253:2 Volume group "mylv" not found Cannot process volume group mylv
8．编辑/etc/fstab文件挂载逻辑卷，并支持磁盘配额选项[root@localhost ~]# vim /etc/fstab
## /etc/fstab# Created by anaconda on Sat Jul 27 13:57:15 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/centos-root / xfs defaults 0 0UUID=5b23a4cd-a55b-48cb-8ba6-564a284d1543 /boot xfs defaults 0 0/dev/mapper/centos-swap swap swap defaults 0 0/dev/myvg/mylv /data xfs defaults,usrquota,grpquota 0 2~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ "/etc/fstab" 12L, 514C 已写入
转载于:https://www.cnblogs.com/ITXJW/p/11305001.html
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