CentOS 7调整/home大小到/路径

安装 xfsdump

yum -y install xfsdump

centos7调整/home大小

把/home内容备份，然后将/home文件系统所在的逻辑卷删除，扩大/root文件系统，新建/home：

tar cvf /tmp/home.tar /home    #备份/home

umount /home    #卸载/home，如果无法卸载，先终止使用/home文件系统的进程

lvremove /dev/centos/home    #删除/home所在的lv

lvextend -L +500G /dev/centos/root    #扩展/root所在的lv，增加50G

xfs_growfs /dev/centos/root    #扩展/root文件系统

lvcreate -L 33G -n home centos    #重新创建home lv

mkfs.xfs /dev/centos/home    #创建文件系统

mount /dev/centos/home /home #挂载

df -h

查看进程命令

fuser -mv /data/

详情

[root@localhost /]# umount /home
umount: /home: target is busy.
        (In some cases useful info about processes that use
         the device is found by lsof(8) or fuser(1))
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# fuser -mv /home/
                     USER        PID ACCESS COMMAND
/home:               root     kernel mount /home
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# umount /home
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# lvremove /dev/centos/home
Do you really want to remove active logical volume centos/home? [y/n]: y
  Logical volume "home" successfully removed
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# lvextend -L +500G /dev/centos/root
  Size of logical volume centos/root changed from 50.00 GiB (12800 extents) to 550.00 GiB (140800 extents).
  Logical volume centos/root successfully resized.
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# xfs_growfs /dev/centos/root
meta-data=/dev/mapper/centos-root isize=512    agcount=4, agsize=3276800 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=13107200, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=6400, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 13107200 to 144179200
[root@localhost /]#
[root@localhost /]# lvcreate -L 33G -n home centos
  Logical volume "home" created.
[root@localhost /]#
[root@localhost /]# mkfs.xfs /dev/centos/home
meta-data=/dev/centos/home       isize=512    agcount=4, agsize=2162688 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0, sparse=0
data     =                       bsize=4096   blocks=8650752, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal log           bsize=4096   blocks=4224, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# 
[root@localhost /]# mount /dev/centos/home /home