阿里云云盘扩展—裸盘xfs

1. 备份并扩容云盘

登录阿里云控制台.备份需要扩展的云盘,并扩容

2. 操作系统扩容分区

2.1 用fidks确认磁盘性质

这里可以看到/dev/vdb1作为裸盘使用,且分区为1号

[root@bf-wmskw3-db ~]# fdisk -lu

Disk /dev/vda: 42.9 GB, 42949672960 bytes, 83886080 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: 0x000dc50f

   Device Boot      Start         End      Blocks   Id  System
/dev/vda1   *        2048     2099199     1048576   83  Linux
/dev/vda2         2099200    41943039    19921920   8e  Linux LVM

Disk /dev/vdb: 322.1 GB, 322122547200 bytes, 629145600 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: 0x000e7aec

   Device Boot      Start         End      Blocks   Id  System
/dev/vdb1            2048   377473023   188735488   83  Linux

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

2.2 安装依赖工具

type growpart || yum install -y cloud-utils-growpart
type sgdisk || yum install -y gdisk
## 下面这行 vdb和1之间有空格
LC_ALL=en_US.UTF-8 growpart /dev/vdb 1 

执行效果如下

[root@xxx-xxxx-db ~]# LC_ALL=en_US.UTF-8 growpart /dev/vdb 1
CHANGED: partition=1 start=2048 old: size=377470976 end=377473024 new: size=629143519 end=629145567

2.3 扩展分区

这里我们用df -Th确认了分区格式为xfs

# df -TH
Filesystem              Type      Size  Used Avail Use% Mounted on
devtmpfs                devtmpfs  8.2G     0  8.2G   0% /dev
tmpfs                   tmpfs     8.2G     0  8.2G   0% /dev/shm
tmpfs                   tmpfs     8.2G  479M  7.7G   6% /run
tmpfs                   tmpfs     8.2G     0  8.2G   0% /sys/fs/cgroup
/dev/mapper/centos-root xfs        19G  6.8G   12G  38% /
/dev/vdb1               xfs       194G  141G   53G  73% /data
/dev/vda1               xfs       1.1G  145M  919M  14% /boot
tmpfs                   tmpfs     1.7G     0  1.7G   0% /run/user/0

使用xfs_group命令进行扩容

# xfs_growfs /data
meta-data=/dev/vdb1              isize=512    agcount=10, agsize=5242624 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=47183872, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=10239, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 47183872 to 78642939

再次查看分区/data已经完成扩展

# df -TH
Filesystem              Type      Size  Used Avail Use% Mounted on
devtmpfs                devtmpfs  8.2G     0  8.2G   0% /dev
tmpfs                   tmpfs     8.2G     0  8.2G   0% /dev/shm
tmpfs                   tmpfs     8.2G  479M  7.7G   6% /run
tmpfs                   tmpfs     8.2G     0  8.2G   0% /sys/fs/cgroup
/dev/mapper/centos-root xfs        19G  6.8G   12G  38% /
/dev/vdb1               xfs       323G  141G  182G  44% /data
/dev/vda1               xfs       1.1G  145M  919M  14% /boot
tmpfs                   tmpfs     1.7G     0  1.7G   0% /run/user/0