百度云服务器CDS磁盘扩容到50G教程实战

先把挂载分区进行卸载

[root@instance-549sbowh /]# umount /www

umount: /www: target is busy.

(In some cases useful info about processes that usethe device is found by lsof(8) or fuser(1))

显示无法卸载成功。

方法1、查看是否有进程占用

[root@instance-549sbowh /]# lsof | grep /www

如果发现有被占用的进程，我们可以使用kill命令，直接杀掉进程。

方法2：编辑vi /etc/fstab文件

[root@instance-549sbowh ~]# vi /etc/fstab

直接注销挂载点，重新启动服务器。

查看磁盘信息，已经卸载成功。

[root@instance-549sbowh ~]# df -lh

Filesystem Size Used Avail Use% Mounted on

/dev/vda1 40G 7.3G 31G 20% /

devtmpfs 980M 0 980M 0% /dev

tmpfs 991M 0 991M 0% /dev/shm

tmpfs 991M 9.1M 982M 1% /run

tmpfs 991M 0 991M 0% /sys/fs/cgroup

tmpfs 199M 0 199M 0% /run/user/0

使用parted -l查看磁盘情况：

[root@instance-549sbowh ~]# parted -l

Model: Virtio Block Device (virtblk)

Disk /dev/vda: 42.9GB

Sector size (logical/physical): 512B/512B

Partition Table: msdos

Disk Flags:

Number Start End Size Type File system Flags

1 1049kB 42.9GB 42.9GB primary ext4 boot

Model: Virtio Block Device (virtblk)

Disk /dev/vdb: 53.7GB

Sector size (logical/physical): 512B/512B

Partition Table: loop

Disk Flags:

Number Start End Size File system Flags

1 0.00B 53.7GB 53.7GB ext4

[root@instance-549sbowh ~]# cat /proc/partitions

major minor #blocks name

253 0 41943040 vda

253 1 41941999 vda1

253 16 52428800 vdb

检查文件系统

[root@instance-549sbowh ~]# e2fsck -f /dev/vdb

e2fsck 1.42.9 (28-Dec-2013)

Pass 1: Checking inodes, blocks, and sizes

Pass 2: Checking directory structure

Pass 3: Checking directory connectivity

Pass 4: Checking reference counts

Pass 5: Checking group summary information

/dev/vdb: 31325/327680 files (0.2% non-contiguous), 713819/1310720 blocks

变更文件系统大小

[root@instance-549sbowh ~]# resize2fs /dev/vdb

resize2fs 1.42.9 (28-Dec-2013)

Resizing the filesystem on /dev/vdb to 13107200 (4k) blocks.

The filesystem on /dev/vdb is now 13107200 blocks long.

重新挂载分区

[root@instance-549sbowh ~]# mount /dev/vdb /www

数据盘扩容成功