linux系统下如何快速查看磁盘信息，linux查看磁盘信息

linux系统下如何快速查看磁盘信息，linux查看磁盘信息

linux系统下如何快速查看磁盘信息。 [root@centos4 ~]# lsblk
NAME??????????? MAJ:MIN RM? SIZE RO TYPE MOUNTPOINT
sda?????????????? 8:0??? 0?? 20G? 0 disk
├─sda1??????????? 8:1??? 0??? 1G? 0 part /boot
└─sda2??????????? 8:2??? 0?? 19G? 0 part
? ├─centos-root 253:0??? 0?? 17G? 0 lvm? /
? └─centos-swap 253:1??? 0??? 2G? 0 lvm? [SWAP]
sr0????????????? 11:0??? 1? 4.2G? 0 rom ?
[root@centos4 ~]# df -h
Filesystem?????????????? Size? Used Avail Use% Mounted on
/dev/mapper/centos-root?? 17G? 3.6G?? 14G? 21% /
devtmpfs???????????????? 478M???? 0? 478M?? 0% /dev
tmpfs??????????????????? 489M???? 0? 489M?? 0% /dev/shm
tmpfs??????????????????? 489M? 7.0M? 482M?? 2% /run
tmpfs??????????????????? 489M???? 0? 489M?? 0% /sys/fs/cgroup
/dev/sda1?????????????? 1014M? 143M? 872M? 15% /boot
tmpfs???????????????????? 98M???? 0?? 98M?? 0% /run/user/0
[root@centos4 ~]# fdisk -l

Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 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: 0x00081e99

?? Device Boot????? Start???????? End????? Blocks?? Id? System
/dev/sda1?? *??????? 2048???? 2099199???? 1048576?? 83? Linux
/dev/sda2???????? 2099200??? 41943039??? 19921920?? 8e? Linux LVM

Disk /dev/mapper/centos-root: 18.2 GB, 18249416704 bytes, 35643392 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/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 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
 

[root@centos4 ~]#

创建分区：

fdisk /dev/vdb (创建一个500M 的分区)

partprobe /dev/vdb

创建逻辑卷：

pvcreate /dev/vdb1
vgcreate vg /dev/vdb1

lvcreate -L 100M -n vo vg

刷文件系统：

mkfs.ext4 /dev/vg/vo?

创建挂载点挂载：

mkdir /mnt/vo
echo "/dev/vg/vo /mnt/vo ext4 defaults 0 0" >> /etc/fstab
mount -a