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成功后发现提示,必须从客户机操作系统内部对磁盘重新进行分区和扩展文件系统,因此需要进入linux系统继续进行配置,这里配置是不会生效的。
进入Linux系统,使用命令fdisk -l查看,发现实际大小为50G,但是系统已挂载的加起来是修改之前的30G。
[root@node03 ~]# fdisk /dev/sda Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): m Command action a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition g create a new empty GPT partition table G create an IRIX (SGI) partition table l list known partition types m print this menu n add a new partition o create a new empty DOS partition table p print the partition table q quit without saving changes s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit x extra functionality (experts only) Command (m for help): d ##删除分区 Partition number (1-3, default 3): 3 ##临时先删除sda3分区 Partition 3 is deleted Command (m for help): n #添加一个新的分区 Partition type: p primary (2 primary, 0 extended, 2 free) e extended Select (default p): p #添加主分区 Partition number (3,4, default 3): 3 #指定分区号3,重新创建sda3分区 First sector (17303552-104857599, default 17303552): #回车 Using default value 17303552 Last sector, +sectors or +size{K,M,G} (17303552-104857599, default 104857599): #回车 Using default value 104857599 Partition 3 of type Linux and of size 41.8 GiB is set #提示OK Command (m for help): w #按w保存退出 The partition table has been altered! #提示OK
重启当前系统,可以选择systemctl reboot或者init 6来执行。
使用命令 xfs_growfs /dev/sda3
,可以看到成功扩展分区,根分区已扩容20G。
[root@node03 ~]# xfs_growfs /dev/sda3 meta-data=/dev/sda3 isize=512 agcount=8, agsize=769984 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=0 spinodes=0 data = bsize=4096 blocks=5701376, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal 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 5701376 to 10944256 查看结果 [root@node03 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 42G 11G 32G 25% / devtmpfs 2.9G 0 2.9G 0% /dev tmpfs 3.0G 0 3.0G 0% /dev/shm tmpfs 3.0G 13M 2.9G 1% /run tmpfs 3.0G 0 3.0G 0% /sys/fs/cgroup /dev/sda1 253M 153M 101M 61% /boot tmpfs 595M 8.0K 595M 1% /run/user/990 tmpfs 595M 0 595M 0% /run/user/0 You have new mail in /var/spool/mail/root
以上为参考博文执行的结果,且当前执行成功的系统为Centos7.6,根分区文件类型为xfs,并且系统不是LVM分区,可作为参考。
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