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How do I expand centos-root to get more storage space?

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HAN

When I run fdisk -l on CentOS-7, I get the following:

Disk /dev/sdd: 1920.4 GB, 1920383410176 bytes, 3750748848 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/centos-root: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/centos-swap: 4294 MB, 4294967296 bytes, 8388608 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/md127: 5760.7 GB, 5760746520576 bytes, 11251458048 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 524288 bytes / 1572864 bytes


Disk /dev/mapper/centos-home: 1860.0 GB, 1860039606272 bytes, 3632889856 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

My operating system itself is in /dev/mapper/centos-root, which has a capacity of ~50GB. I don't care about the other disks and wish to extend this centos-root drive by 5.76TB (from the md1237 disk) or any of the other disks. How can I do this? I don't have any data that I need to back up but I cannot delete the network settings or the actual operating system. Thank you!

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lvm
berndbausch avatar
us flag
berndbausch
You add /dev/md127 to the `centos` volume group, then use `lvextend` or `lvresize` to increase the root volume. If you add `-r`, the filesystem will be resized as well; if not, you will have to resize it manually in an additional step. To get more precise help, add the output of `lvs`, `vgs`, `pvs` and `lsblk -f` to the question.
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