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linux挂载新硬盘

發布時間：2024/4/17 linux 44 豆豆

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硬盤已經沒有了
[root@root dev]# df -lh
Filesystem????? Size? Used Avail Use% Mounted on
/dev/xvda1?????? 20G?? 19G???? 0 100% /
tmpfs?????????? 3.9G???? 0? 3.9G?? 0% /dev/shm
添加一塊，查看地下
[root@root dev]# fdisk xvdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x3b030cf6.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
???????? switch off the mode (command 'c') and change display units to
???????? sectors (command 'u').
輸入查看一下支持的命令
Command (m for help): m
Command action
?? a?? toggle a bootable flag
?? b?? edit bsd disklabel
?? c?? toggle the dos compatibility flag
?? d?? delete a partition
?? l?? list known partition types
?? m?? print this menu
?? n?? add a new partition
?? o?? create a new empty DOS partition table
?? p?? print the partition table
?? q?? quit without saving changes
?? s?? create a new empty Sun disklabel
?? t?? change a partition's system id
?? u?? change display/entry units
?? v?? verify the partition table
?? w?? write table to disk and exit
?? x?? extra functionality (experts only)

Command (m for help):
?
用命令 fdisk /dev/xvdb 進行分區，輸入 p 查看新硬盤分區
Command (m for help): p

Disk /dev/xvdb: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 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: 0xc50d5eb0

??? Device Boot????? Start???????? End????? Blocks?? Id? System

d命令刪除一個存在的分區
t命令修改分區的類型ID號；l命令顯示分區ID號的列表；a命令指定啟動分區；w命令是將對分區表的修改存盤讓它發生作用。
n命令創建一個新分區，p命令顯示分區列表；Partition number輸入1，First cylinder 輸入1，Last cylinder：+49G
Command (m for help): n
Command action
?? e?? extended
?? p?? primary partition (1-4)
?? e 是擴展分區，p 是主分區，我們輸入 p
p
Partition number (1-4): 1
First cylinder (1-6527, default 1): 1
Last cylinder, +cylinders or +size{K,M,G} (1-6527, default 6527): +50G
Value out of range.
Last cylinder, +cylinders or +size{K,M,G} (1-6527, default 6527): +49G
再看下分區
Command (m for help): p
Disk /dev/xvdb: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 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: 0xc50d5eb0
??? Device Boot????? Start???????? End????? Blocks?? Id? System
/dev/xvdb1?????????????? 1??????? 6398??? 51391903+? 83? Linux

Command (m for help):
最后輸入 w 保存
Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
[root@root ~]#

[root@root ~]# fdisk -l

Disk /dev/xvda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 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: 0x00078f9c

??? Device Boot????? Start???????? End????? Blocks?? Id? System
/dev/xvda1?? *?????????? 1??????? 2611??? 20970496?? 83? Linux

??? Device Boot????? Start???????? End????? Blocks?? Id? System
/dev/xvdb1?????????????? 1??????? 6398??? 51391903+? 83? Linux
目前這里還是看不到新加的硬盤分區。
[root@root ~]# df -lh
Filesystem????? Size? Used Avail Use% Mounted on
/dev/xvda1?????? 20G?? 19G???? 0 100% /
tmpfs?????????? 3.9G???? 0? 3.9G?? 0% /dev/shm

需要對它進行格式化，用 mkfs -t ext3 /dev/sdb1 命令進行對sdb1格式化。
[root@root ~]# mkfs -t ext3 /dev/xvdb1
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
3213168 inodes, 12847975 blocks
642398 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
393 block groups
32768 blocks per group, 32768 fragments per group
8176 inodes per group
Superblock backups stored on blocks:
??????? 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
??????? 4096000, 7962624, 11239424

Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 35 mounts or
180 days, whichever comes first.? Use tune2fs -c or -i to override.

格式化完了之后，我們就可以進行掛載分區了，我們先創建一個目錄叫
?data 然后把 /dev/xvdb1 掛載到 /data 目錄下，命令如下
mkdir /data?? ??? ??? ??? ??? ?創建一個目錄data
mount /dev/xvdb1 /data?? ??? ?把 /dev/sdb1 掛載到 /data 目錄下? ?
[root@root ~]# fdisk? -l

??? Device Boot????? Start???????? End????? Blocks?? Id? System
/dev/xvda1?? *?????????? 1??????? 2611??? 20970496?? 83? Linux

[root@root ~]## df -lh
Filesystem????? Size? Used Avail Use% Mounted on
/dev/xvda1?????? 20G?? 19G? 537M? 98% /
tmpfs?????????? 3.9G???? 0? 3.9G?? 0% /dev/shm
/dev/xvdb1?????? 49G? 4.8G?? 42G? 11% /data

轉載于:https://my.oschina.net/kenzheng/blog/857504

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