How to more space to a folder
Currently under /dev/mapper/rhel-home i have 92 Gigs free space. Please see the below output.
[admin@localhost ~]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 50G 3.8G 47G 8% /
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 444K 3.9G 1% /dev/shm
tmpfs 3.9G 9.0M 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/mapper/rhel-home 92G 78M 92G 1% /home
/dev/sda1 497M 124M 373M 25% /boot
[admin@localhost ~]$
As a part of a software installation one of application will ask for around 60 gigs of free space under the folder "/etc/arcsight". The Folder "arcsight" under /etc will e created while we installing the application.
Now, i want to assign 60 GB space from /dev/mapper/rhel-home to /etc/arcsight. Can some one tell me how to do it.
Please let me know the commands also. Since, i don't linux OS those commands will be helpfull for me.
Thanks,
Vishnu.
Responses
First step is to confirm that you are running LVM by using the following command as root
vgdisplay
This will tell you if there is any available/unallocated disk which you can allocate to the logical volume (if LVM is enabled).
If there isn't any available the basic process is (as long as you have ext4 which can shrink.. if you are using xfs it's going to be a longer process)
1. shrink /dev/mapper/rhel-home filesystem
2. shrink /dev/mapper/rhel-home logical volume
3. Allocate available space in volume group to /dev/mapper/rhel-root logical volume
4. Grow filesystem on /dev/mapper/rhel-root logical volume
That aside, I have to ask the question of why you are installing 60G of application data in /etc.
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