CentOS 7 issue: devmappercentos-root at 97% use

1、背景：. /dev/mapper/centos-root 空间不足，但是/dev/mapper/centos-home却没有使用. 2、操作/dev/mapper/centos-home 容量减少.

Just do this (change size if needed). lvresize -L 50g /dev/mapper/centos-home lvresize -l +100%FREE /dev/mapper/centos-root.

I've been running a CentOS 7 minimal install web server for several years. /dev/mapper/centos-root is 14G with only 6.8G (45%) used.

Step 1 - Copy /home Contents · Step 2 - Unmount the /home directory · Step 3 - Note the size of the home LVM volume · Step 4 - Remove the home LVM volume · Step 5 - ...

The first thing is to check if you have free extents in your volume group, to do that, you will use: vgdisplay which will return details on the VG.

I am running a virtual server, and the provider added extra diskspace. However, I need to somehow increase (merge) the existing disk (has data) and the new ...

Fixed. The swap partition was in the way. Once I removed it I was able to expand out /dev/mapper/centos-root like so:

You can shrink your /home with lvresize -L-50G --resizefs centos/home (this will reduce size of your /home by 50 GB) and then grow your root logical volume.

The volume /dev/mapper/centos_centos7-root was on a physical disk with that has a total capacity of 60GB. A mere 26Gb was in use so there was more then 30GB of ...

You have grown the physical volume but haven't run pvresize to add the extra space to the volume group, nor have run lvextend to resize either ...