查看磁盘分区:
fdisk -l
查看指定磁盘分区表:
fdisk -l
[root@SGH1VESPTST04 ~]# fdisk -l
Disk /dev/sda: 644.2 GB, 644245094400 bytes, 1258291200 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: 0x00077b3c
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 411647 204800 83 Linux
/dev/sda2 411648 104857599 52222976 8e Linux LVM
/dev/sda3 104857600 1258291199 576716800 83 Linux
Disk /dev/mapper/vg_centos7-root: 53.5 GB, 53473181696 bytes, 104439808 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
fdisk /dev/sda
n→p→回车→回车→+200G(或者回车:代表全部分给)→p→n→t→8e→p→w
reboot
fdisk -l
[root@SGH1VESPTST04 ~]# fdisk -l
Disk /dev/sda: 644.2 GB, 644245094400 bytes, 1258291200 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: 0x00077b3c
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 411647 204800 83 Linux
/dev/sda2 411648 104857599 52222976 8e Linux LVM
/dev/sda3 104857600 1258291199 576716800 8e Linux LVM
Disk /dev/mapper/vg_centos7-root: 53.5 GB, 53473181696 bytes, 104439808 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
准备物理卷:
pvcreate /dev/sda3
使用以下命令检查物理卷的创建情况:
pvdisplay
使用下列命令可以删除物理卷:
pvremove /dev/sda3
准备卷组(VG):
vgcreate vg_cc /dev/sda3
使用以下命令可以验证卷组:
vgdisplay
使用以下命令删除卷组 :
vgremove vg_cc
创建逻辑卷(LV):
lvcreate -L 150G -n lv_docker vg_cc
使用以下命令查看逻辑卷:
lvdisplay
现在逻辑卷已经准备好了,我们可以格式化和挂在逻辑卷
mkfs.xfs /dev/vg_cc/lv_docker
mkdir /var/lib/docker
mount /dev/vg_cc/lv_docker /var/lib/docker
一旦逻辑卷挂载,我们就可以在挂载点上/var/lib/docker 上写东西了。要创建其他挂载点,可以重复这个过程。
设置开机自启动:
查看分区挂载点的 UUID:
blkid
blkid | awk '{print $2}'
[root@SGH1VESPTST04 ~]# blkid
/dev/mapper/vg_centos7-root: UUID="919bf46a-4b59-4174-8bd2-9bb79f13a338" TYPE="xfs"
/dev/sda2: UUID="5P1RHA-J4do-9YKR-e1uB-CysT-cmAq-QathT2" TYPE="LVM2_member"
/dev/sda1: UUID="bb132ec7-b90e-45cd-8e3b-18539366bbff" TYPE="xfs"
/dev/sda3: UUID="No5Jm6-4tRn-SUOv-g5Pj-ij3C-cAeR-Hj38yL" TYPE="LVM2_member"
/dev/mapper/vg_cc-lv_docker: UUID="8103761e-e905-4130-9ee1-1b1e82417cfe" TYPE="xfs"
/dev/mapper/vg_cc-lv_kubelet: UUID="169c4dba-9d04-41ca-b9e5-d7b1d39b82d5" TYPE="xfs"
/dev/mapper/vg_cc-lv_glusterfs: UUID="1120d1d4-283c-4fa4-87d6-87777bc77c07" TYPE="xfs"
[root@SGH1VESPTST04 ~]#
echo "UUID=8103761e-e905-4130-9ee1-1b1e82417cfe /dev/mapper/vg_cc-lv_docker xfs defaults 0 0" >>/etc/fstab
cat /etc/fstab
[root@SGH1VESPTST04 ~]# cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Fri Jan 26 16:50:17 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/vg_centos7-root / xfs defaults 0 0
UUID=bb132ec7-b90e-45cd-8e3b-18539366bbff /boot xfs defaults 0 0
UUID=169c4dba-9d04-41ca-b9e5-d7b1d39b82d5 /dev/mapper/vg_cc-lv_kubelet xfs defaults 0 0
UUID=1120d1d4-283c-4fa4-87d6-87777bc77c07 /dev/mapper/vg_cc-lv_glusterfs xfs defaults 0 0
UUID=8103761e-e905-4130-9ee1-1b1e82417cfe /dev/mapper/vg_cc-lv_docker xfs defaults 0 0
[root@SGH1VESPTST04 ~]#
df -Th
[root@SGH1VESPTST04 ~]#
[root@SGH1VESPTST04 ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/vg_centos7-root xfs 50G 1.6G 49G 4% /
devtmpfs devtmpfs 16G 0 16G 0% /dev
tmpfs tmpfs 16G 0 16G 0% /dev/shm
tmpfs tmpfs 16G 8.5M 16G 1% /run
tmpfs tmpfs 16G 0 16G 0% /sys/fs/cgroup
/dev/sda1 xfs 197M 167M 31M 85% /boot
tmpfs tmpfs 3.2G 0 3.2G 0% /run/user/10159
/dev/mapper/vg_cc-lv_docker xfs 150G 33M 150G 1% /var/lib/docker
/dev/mapper/vg_cc-lv_glusterfs xfs 300G 33M 300G 1% /gluster
/dev/mapper/vg_cc-lv_kubelet xfs 100G 33M 100G 1% /var/lib/kubelet
[root@SGH1VESPTST04 ~]#