Linux centos7 增加root分区容量
作者：互联网
[root@192 /]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 50G 6.0G 44G 12% /
devtmpfs 2.8G 0 2.8G 0% /dev
tmpfs 2.8G 0 2.8G 0% /dev/shm
tmpfs 2.8G 9.1M 2.8G 1% /run
tmpfs 2.8G 0 2.8G 0% /sys/fs/cgroup
/dev/mapper/centos-home 967G 33M 967G 1% /home
/dev/sda1 1014M 180M 835M 18% /boot
tmpfs 568M 4.0K 568M 1% /run/user/42
tmpfs 568M 40K 568M 1% /run/user/0
[root@192 /]# clear
[root@192 /]# ls
bin boot dev etc home lib lib64 media mnt opt proc root run sbin srv sys tmp usr var
[root@192 /]# cp -r /home/ homebak
[root@192 /]# umount /home/
[root@192 /]# ls
bin boot dev etc home homebak lib lib64 media mnt opt proc root run sbin srv sys tmp usr var
[root@192 /]# lvremove /dev/mapper/centos-home
Do you really want to remove active logical volume centos/home? [y/n]: y
Logical volume "home" successfully removed
[root@192 /]# lvextend -L +200G /dev/mapper/centos-root
Size of logical volume centos/root changed from 50.00 GiB (12800 extents) to 250.00 GiB (64000 extents).
Logical volume centos/root successfully resized.
[root@192 /]# xfs_growfs /dev/mapper/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 65536000
[root@192 /]#
[root@192 /]# df -lh
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 250G 6.4G 244G 3% /
devtmpfs 2.8G 0 2.8G 0% /dev
tmpfs 2.8G 0 2.8G 0% /dev/shm
tmpfs 2.8G 9.1M 2.8G 1% /run
tmpfs 2.8G 0 2.8G 0% /sys/fs/cgroup
/dev/sda1 1014M 180M 835M 18% /boot
tmpfs 568M 4.0K 568M 1% /run/user/42
tmpfs 568M 56K 568M 1% /run/user/0
[root@192 /]# cd /root
[root@192 ~]# df -lh
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 250G 6.4G 244G 3% /
devtmpfs 2.8G 0 2.8G 0% /dev
tmpfs 2.8G 0 2.8G 0% /dev/shm
tmpfs 2.8G 9.1M 2.8G 1% /run
tmpfs 2.8G 0 2.8G 0% /sys/fs/cgroup
/dev/sda1 1014M 180M 835M 18% /boot
tmpfs 568M 4.0K 568M 1% /run/user/42
tmpfs 568M 56K 568M 1% /run/user/0
[root@192 ~]# lvcreate -L 660G -n home centos
Logical volume "home" created.
[root@192 ~]# mkfs.xfs /dev/centos/home
meta-data=/dev/centos/home isize=512 agcount=4, agsize=43253760 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=173015040, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=84480, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@192 ~]# mount /dev/centos/home /home
[root@192 ~]# ls
anaconda-ks.cfg Desktop Documents Downloads initial-setup-ks.cfg Music Pictures Public Templates Videos
[root@192 ~]# cd /
[root@192 /]# ls
bin boot dev etc home homebak lib lib64 media mnt opt proc root run sbin srv sys tmp usr var
[root@192 /]# cp -r /homebak/* /home
[root@192 /]# cd /home
[root@192 home]# ls
postgers
[root@192 home]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 250G 6.4G 244G 3% /
devtmpfs 2.8G 0 2.8G 0% /dev
tmpfs 2.8G 0 2.8G 0% /dev/shm
tmpfs 2.8G 9.1M 2.8G 1% /run
tmpfs 2.8G 0 2.8G 0% /sys/fs/cgroup
/dev/sda1 1014M 180M 835M 18% /boot
tmpfs 568M 4.0K 568M 1% /run/user/42
tmpfs 568M 52K 568M 1% /run/user/0
/dev/mapper/centos-home 660G 33M 660G 1% /home
[root@192 home]#
标签：dev,192,centos7,2.8,Linux,home,tmpfs,root 来源： https://www.cnblogs.com/ios9/p/15758958.html