Linux硬盘管理
Linux硬盘管理常用命令
- Linux硬盘管理
- 硬盘分区管理
- 删除分区
- 硬盘格式化
- 格式化磁盘报错
- 挂载硬盘
- 自动挂载
- 后续
Linux硬盘管理
Linux 硬盘使用情况查看
df -h
Disk /dev/vda: 107.4 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00028912
Device Boot Start End Blocks Id System
/dev/vda1 * 1 2611 20970496 83 Linux
/dev/vda2 2611 13054 83884735 83 Linux
这里显示硬盘总容量
107G
两块分区：
cda1和vda2
硬盘分区管理
[root@ecs-docker-test ~]# 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.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0xc248b687.
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1):
First sector (2048-209715199, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-209715199, default 209715199):
Using default value 209715199
Partition 1 of type Linux and of size 100 GiB is set
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
注意：分区之后需要执行命令 partprobe
或者 重启服务器
删除分区
略...
硬盘格式化
命令：mkfs -t ext4 -c /dev/vda2
[root@crawlerdev deploy]# mkfs -t ext4 -c /dev/vda2
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
5242880 inodes, 20971183 blocks
1048559 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
640 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
Checking for bad blocks (read-only test): done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 22 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
格式化磁盘报错
mkfs.ext3:inode_size (128) * inodes_count (0) too big for a
filesystemwith 0 blocks, specify higher inode_ratio (-i)
orlower inode count (-N).
网路上接思路都是扩展分区和主分区的思路
有时候也可能是硬盘分区之后，机器没有识别
需要重启之后才能继续格式化新分区
挂载硬盘
[root@crawlerdev deploy]# mount /dev/vda2 /deploy/
[root@crawlerdev deploy]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/vda1 20G 20G 0 100% /
tmpfs 1.9G 0 1.9G 0% /dev/shm
/dev/vda2 79G 184M 75G 1% /deploy
自动挂载
https://www.cnblogs.com/zishengY/p/7137671.html
后续
一般生产环境会由运维操作
开发环境如果不熟悉Linux系统 不建议自己操作1
参考资料：(https://blog.csdn.net/qq_35036995/article/details/80532351)
参考资料：https://blog.csdn.net/Field_Yang/article/details/65633317
https://blog.csdn.net/openn/article/details/9856451 ↩︎