I changed my 500GB NVMe to 2TB using rescuezilla.
And now I want to extend the home folder to use all the remaining free space on the NVMe without fresh install.
OS: Rocky Linux 8.10
lsblk -o name,type,fstype,size,mountpoint
NAME TYPE FSTYPE SIZE MOUNTPOINT
sda disk 3.7T
└─sda1 part ext4 3.7T
sdb disk 3.7T
└─sdb1 part ext4 3.7T
sdc disk 3.7T
├─sdc1 part 16M
└─sdc2 part ntfs 3.7T
sdd disk 1.8T
└─sdd1 part ext4 1.8T
nvme0n1 disk 1.9T
├─nvme0n1p1 part vfat 600M /boot/efi
├─nvme0n1p2 part xfs 1G /boot
└─nvme0n1p3 part LVM2_member 464.2G
├─rl-root lvm xfs 70G /
├─rl-swap lvm swap 31.5G [SWAP]
└─rl-home lvm xfs 362.7G /home
and yes there should be a space between the main device and the partition number (in this case nvmeon1p3). You will not be able to resize the earlier partitions on that disk which are allocated to /boot/efi and /boot. Only the last partition can be resized.
After that you may need to use:
pvresize /dev/nvme0n1p3
vgs
check to ensure there is available disk space to the vgs command for the volume group, and then you can use that space to resize your LVM partitions for the rl-root or rl-home partitions. This is done using the lvresize command.
If you want all that space to /home without adding anything to the rl-root partition, then this is how you would do it:
root@kvm:~# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
root rl_kvm -wi-ao---- <4.09t
swap rl_kvm -wi-ao---- 4.00g
root@kvm:~# lvresize rl_kvm/root -l +100%FREE -r
New size (1071783 extents) matches existing size (1071783 extents).
File system xfs found on rl_kvm/root mounted at /.
Size of logical volume rl_kvm/root unchanged from <4.09 TiB (1071783 extents).
Extending file system xfs to <4.09 TiB (4495383724032 bytes) on rl_kvm/root...
xfs_growfs /dev/rl_kvm/root
meta-data=/dev/mapper/rl_kvm-root isize=512 agcount=3350, agsize=327616 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=0
= reflink=1 bigtime=1 inobtcount=1 nrext64=0
data = bsize=4096 blocks=1097505792, imaxpct=25
= sunit=64 swidth=320 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=16384, version=2
= sectsz=512 sunit=64 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
xfs_growfs done
Extended file system xfs on rl_kvm/root.
Logical volume rl_kvm/root successfully resized.
use the example above to do similar on your system. Mine obviously didn’t resize, because it already had the space allocated. Yours will be done for /home, and not root like in my example.
I’d think twice before extending /home, unless you have hundreds of users that need home directories. The alternative is to use the free space as “whatever”, e.g. create a /data partition where it’s contents are shared by all users. People get annoyed when /home extends to the end of the disk and ask how to shrink it.
If it’s a desktop PC, then /home is enough to allocate. Your / partition has 70GB, so I doubt very much you will use all of this anyway, unless you start filling up /var or /opt when installing apps or other things. But for everyday desktop use it’s fine.
The main reason to be 100% sure if you want to allocate it all to /home is because XFS partitions cannot be shrunk. Therefore in the future if you decide you need space somewhere else, then it will be difficult without reinstalling the computer and restoring your data.
