centos7系统使用resize2fs扩容ext4磁盘分区
时间：2023-01-30 来源：未知 投稿：admin 点击：次
[root@localhost ~]# umount /sj umount需要扩容的分区。
[root@localhost ~]# parted /dev/xvd //查看磁盘分区情况
xvda xvda1 xvda2 xvdb xvdb1
[root@localhost ~]# parted /dev/xvdb //使用parted工具，选择准备扩容的磁盘。
GNU Parted 3.1
Using /dev/xvdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print //查看当前分区情况
Model: Xen Virtual Block Device (xvd)
Disk /dev/xvdb: 429GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 215GB 215GB primary ext4
(parted) rm 1 //删除当前分区
(parted) mkpart
Partition type? primary/extended? primary
File system type? [ext2]? ext4 //格式类型
Start? 1 //开始位置
End? -1 //结束位置
(parted) q //退出工具
Information: You may need to update /etc/fstab.
[root@localhost ~]# resize2fs -f /dev/xvdb1
resize2fs 1.42.9 (28-Dec-2013)
Filesystem at /dev/xvdb1 is mounted on /sj; on-line resizing required
old_desc_blocks = 25, new_desc_blocks = 50
The filesystem on /dev/xvdb1 is now 104857088 blocks long.
[root@localhost ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 11:0 1 1024M 0 rom
xvda 202:0 0 150G 0 disk
├─xvda1 202:1 0 1G 0 part /boot
└─xvda2 202:2 0 49G 0 part
├─cl-root 253:0 0 47G 0 lvm /
└─cl-swap 253:1 0 2G 0 lvm [SWAP]
xvdb 202:16 0 400G 0 disk
└─xvdb1 202:17 0 400G 0 part /sj
[root@localhost ~]# mount -a //重新加载分区
[root@localhost ~]# df -h //查看扩容后的分区情况
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/cl-root 47G 5.7G 42G 12% /
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs 3.9G 8.6M 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/xvda1 1014M 165M 850M 17% /boot
tmpfs 782M 0 782M 0% /run/user/0
/dev/xvdb1 394G 193G 184G 52% /sj
[root@localhost ~]# parted /dev/xvd //查看磁盘分区情况
xvda xvda1 xvda2 xvdb xvdb1
[root@localhost ~]# parted /dev/xvdb //使用parted工具，选择准备扩容的磁盘。
GNU Parted 3.1
Using /dev/xvdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print //查看当前分区情况
Model: Xen Virtual Block Device (xvd)
Disk /dev/xvdb: 429GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 215GB 215GB primary ext4
(parted) rm 1 //删除当前分区
(parted) mkpart
Partition type? primary/extended? primary
File system type? [ext2]? ext4 //格式类型
Start? 1 //开始位置
End? -1 //结束位置
(parted) q //退出工具
Information: You may need to update /etc/fstab.
[root@localhost ~]# resize2fs -f /dev/xvdb1
resize2fs 1.42.9 (28-Dec-2013)
Filesystem at /dev/xvdb1 is mounted on /sj; on-line resizing required
old_desc_blocks = 25, new_desc_blocks = 50
The filesystem on /dev/xvdb1 is now 104857088 blocks long.
[root@localhost ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 11:0 1 1024M 0 rom
xvda 202:0 0 150G 0 disk
├─xvda1 202:1 0 1G 0 part /boot
└─xvda2 202:2 0 49G 0 part
├─cl-root 253:0 0 47G 0 lvm /
└─cl-swap 253:1 0 2G 0 lvm [SWAP]
xvdb 202:16 0 400G 0 disk
└─xvdb1 202:17 0 400G 0 part /sj
[root@localhost ~]# mount -a //重新加载分区
[root@localhost ~]# df -h //查看扩容后的分区情况
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/cl-root 47G 5.7G 42G 12% /
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs 3.9G 8.6M 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/xvda1 1014M 165M 850M 17% /boot
tmpfs 782M 0 782M 0% /run/user/0
/dev/xvdb1 394G 193G 184G 52% /sj
如果您的问题仍未解决，还可以加入服务器在线技术交流QQ群:8017413寻求帮助。
相关内容
