Linux虚拟机 虚拟磁盘扩容

原虚拟磁盘300G /dev/xvdb1 挂载点/data

关机，增加xvdb容量到400G

开机

检查

# df -Th /data
Filesystem     Type  Size  Used Avail Use% Mounted on
/dev/xvdb1     xfs   300G   33M  300G   1% /data

# lsblk /dev/xvdb
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
xvdb    202:16   0  400G  0 disk
└─xvdb1 202:17   0  300G  0 part /data

有效步骤

# umount /data
# parted /dev/xvdb resizepart 1 100%

# xfs_growfs /data/ #扩容xfs并自动挂载了/data
data blocks changed from xxxxx to zzzzz

检查

# df -Th /data
Filesystem     Type  Size  Used Avail Use% Mounted on
/dev/xvdb1     xfs   400G   33M  400G   1% /data
# lsblk /dev/xvdb
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
xvdb    202:16   0  400G  0 disk
└─xvdb1 202:17   0  400G  0 part /data

xfs格式文件系统使用 xfs_growfs;
ext2/3/4格式文件系统使用 resize2fs