阿里云Ecs挂载云盘

最新推荐文章于 2025-05-08 16:57:00 发布

原创最新推荐文章于 2025-05-08 16:57:00 发布 · 1.3k 阅读

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#linux

本文详细介绍了如何在云服务器上挂载新购的500G云盘，并提供了具体的操作步骤，包括硬盘检查、分区、格式化及挂载。

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先购买一个云盘 500G大小

查看硬盘情况`fdisk -l`

查看是否有一个 /dev/xvdb 或者数据盘大小与你要挂载一致的硬盘

``` Disk /dev/xvda: 107.4 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 cylinders, total 209715200 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 identifier: 0x000da36d

Device Boot      Start         End      Blocks   Id  System

/dev/xvda1 * 2048 209713151 104855552 83 Linux

Disk /dev/xvdb: 214.7 GB, 214748364800 bytes //重点 255 heads, 63 sectors/track, 26108 cylinders, total 419430400 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 identifier: 0x00000000

Disk /dev/xvdb doesn't contain a valid partition table

```

执行分区

fdisk /dev/xvdb ；对数据盘进行分区；根据提示，依次输入“n”，“p”“1”，两次回车，“wq”，分区就开始了，很快就会完成。

``` Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel with disk identifier 0x5c273d61. 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)

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): 1 First sector (2048-419430399, default 2048): Using default value 2048 Last sector, sectors or size{K,M,G} (2048-419430399, default 419430399): Using default value 419430399

Command (m for help): wq The partition table has been altered!

Calling ioctl() to re-read partition table. Syncing disks. ```

查看硬盘信息

fdisk -l 查看新的分区。新分区 xvdb1 已经创建好。如下面示例中的/dev/xvdb1

Device Boot      Start         End      Blocks   Id  System

/dev/xvda1 * 2048 209713151 104855552 83 Linux

Disk /dev/xvdb: 214.7 GB, 214748364800 bytes 86 heads, 25 sectors/track, 195083 cylinders, total 419430400 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 identifier: 0x5c273d61

Device Boot      Start         End      Blocks   Id  System

/dev/xvdb1 2048 419430399 209714176 83 Linux ```

有两种情况，

你这个数据盘是新购买的，以前没有用过（没有存储过数据），那么就要对其进行格式化，使用 mkfs.ext3 /dev/xvdb1命令。
第二种，如果你之前就有数据盘，只是你把系统盘重置了，需要将数据盘再次挂载到重置后的系统上，那么就不要对其格式化（跳过此步骤），直接执行后面的步骤挂载就可以了。

``` mke2fs 1.42.9 (4-Feb-2014) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 13107200 inodes, 52428544 blocks 2621427 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 1600 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, 23887872

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