aws服务器centos8系统硬盘分区问题

aws服务器centos8系统硬盘分区问题

申请了100G的硬盘空间，系统安装好后，查看空间情况：

发现只有4gG不到，赶紧一顿操作
大前提：安装一个工具growpart
这个是在centos8下面的yum安装：yum install -y cloud-utils-growpart
安装完成后，就开始找回剩下空间

主要3个步骤：

根目录97G，完工

1、安装工具：yum install -y cloud-utils-growpart
2、运行growpart 命令扩容分区，扩容操作：growpart /dev/xvda 2

[root@ip-172-31-18-218 ~]# growpart /dev/xvda 2
CHANGED: partition=2 start=2099200 old: size=5908480 end=8007680 new: size=207615967 end=209715167

3、进行文件系统的在线扩容，需要使用xfs_growfs命令进行扩展

[root@ip-172-31-18-218 ~]# xfs_growfs /dev/xvda2
meta-data=/dev/xvda2             isize=512    agcount=4, agsize=184640 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1
data     =                       bsize=4096   blocks=738560, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 738560 to 25951995

全部完整操作：

[root@ip-172-31-18-218 ~]# df -l
Filesystem     1K-blocks    Used Available Use% Mounted on
devtmpfs         8171688       0   8171688   0% /dev
tmpfs            8208468       0   8208468   0% /dev/shm
tmpfs            8208468   16788   8191680   1% /run
tmpfs            8208468       0   8208468   0% /sys/fs/cgroup
/dev/xvda2       2944000 1785856   1158144  61% /
/dev/xvda1        999320   87756    842752  10% /boot
tmpfs            1641692       0   1641692   0% /run/user/1001
[root@ip-172-31-18-218 ~]# lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
xvda    202:0    0  100G  0 disk 
├─xvda1 202:1    0    1G  0 part /boot
└─xvda2 202:2    0  2.8G  0 part /
[root@ip-172-31-18-218 ~]# growpart /dev/xvda 1
NOCHANGE: partition 1 is size 2097152. it cannot be grown
[root@ip-172-31-18-218 ~]# growpart /dev/xvda 2
CHANGED: partition=2 start=2099200 old: size=5908480 end=8007680 new: size=207615967 end=209715167
[root@ip-172-31-18-218 ~]# lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
xvda    202:0    0  100G  0 disk 
├─xvda1 202:1    0    1G  0 part /boot
└─xvda2 202:2    0   99G  0 part /
[root@ip-172-31-18-218 ~]# df -l
Filesystem     1K-blocks    Used Available Use% Mounted on
devtmpfs         8171688       0   8171688   0% /dev
tmpfs            8208468       0   8208468   0% /dev/shm
tmpfs            8208468   16788   8191680   1% /run
tmpfs            8208468       0   8208468   0% /sys/fs/cgroup
/dev/xvda2       2944000 1786120   1157880  61% /
/dev/xvda1        999320   87756    842752  10% /boot
tmpfs            1641692       0   1641692   0% /run/user/1001
[root@ip-172-31-18-218 ~]# fdisk -l
Disk /dev/xvda: 100 GiB, 107374182400 bytes, 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
Disklabel type: dos
Disk identifier: 0xfb1545d0

Device     Boot   Start       End   Sectors Size Id Type
/dev/xvda1 *       2048   2099199   2097152   1G 83 Linux
/dev/xvda2      2099200 209715166 207615967  99G 83 Linux
[root@ip-172-31-18-218 ~]# xfs_growfs /dew/xvda2
xfs_growfs: path resolution failed for /dew/xvda2: No such file or directory
[root@ip-172-31-18-218 ~]# xfs_growfs /dev/xvda2
meta-data=/dev/xvda2             isize=512    agcount=4, agsize=184640 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1
data     =                       bsize=4096   blocks=738560, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 738560 to 25951995
[root@ip-172-31-18-218 ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        7.8G     0  7.8G   0% /dev
tmpfs           7.9G     0  7.9G   0% /dev/shm
tmpfs           7.9G   17M  7.9G   1% /run
tmpfs           7.9G     0  7.9G   0% /sys/fs/cgroup
/dev/xvda2       99G  2.4G   97G   3% /
/dev/xvda1      976M   86M  823M  10% /boot
tmpfs           1.6G     0  1.6G   0% /run/user/1001

完结！