Extend FS Partition after Resizing Disk Size in Linux
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Let say after upgrading disk size in our virtual machine, we got condition like this:
root@gejoreuy:~# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT loop0 7:0 0 63.3M 1 loop /snap/core20/1822 loop1 7:1 0 63.3M 1 loop /snap/core20/1828 loop2 7:2 0 91.9M 1 loop /snap/lxd/24061 loop3 7:3 0 91.8M 1 loop /snap/lxd/23991 loop4 7:4 0 49.8M 1 loop /snap/snapd/17950 loop5 7:5 0 49.9M 1 loop /snap/snapd/18357 sda 8:0 0 256G 0 disk ├─sda1 8:1 0 255.9G 0 part / ├─sda14 8:14 0 4M 0 part └─sda15 8:15 0 106M 0 part /boot/efi sdb 8:16 0 1.2T 0 disk └─sdb1 8:17 0 1.2T 0 part /mnt sdc 8:32 0 1T 0 disk └─sdc1 8:33 0 200G 0 part /pg
In this case, we see /dev/sdc is having 1TB disk size while /dev/sdc1 for /pg is only 200GB.
We're going to extend /dev/sdc1 for /pg to use all free disk space in /dev/sdc without loosing the data, of course.
What we can do is simple. Just run growpart /dev/sdc 1 and then continued with resize2fs /dev/sdc1.
As example, first, check the free disk space in /dev/sdc by running this command:
root@gejoreuy:~# parted /dev/sdc print free
Model: Msft Virtual Disk (scsi)
Disk /dev/sdc: 1100GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1024B 1049kB 1048kB Free Space
1 1049kB 215GB 215GB primary ext4
215GB 1100GB 885GB Free Space
Extend the disk partition size by run growpart command:
root@gejoreuy:~# growpart /dev/sdc 1 CHANGED: partition=1 start=2048 old: size=419428352 end=419430400 new: size=2147481567 end=2147483615 root@gejoreuy:/home/operations# resize2fs /dev/sdc1 resize2fs 1.45.5 (07-Jan-2020) Filesystem at /dev/sdc1 is mounted on /pg; on-line resizing required old_desc_blocks = 25, new_desc_blocks = 128 The filesystem on /dev/sdc1 is now 268435195 (4k) blocks long.
Then continue to extend the fs by running resize2fs for fs partition:
root@gejoreuy:~# resize2fs /dev/sdc1 resize2fs 1.45.5 (9-Mar-2023)
Check if the FS disk space is already increased.
root@gejoreuy:/home/operations# df -h Filesystem Size Used Avail Use% Mounted on /dev/root 248G 8.5G 240G 4% / devtmpfs 63G 0 63G 0% /dev tmpfs 63G 244K 63G 1% /dev/shm tmpfs 13G 1.1M 13G 1% /run tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 63G 0 63G 0% /sys/fs/cgroup /dev/sdc1 1007G 64G 901G 7% /pg /dev/loop0 64M 64M 0 100% /snap/core20/1822 /dev/loop1 64M 64M 0 100% /snap/core20/1828 /dev/loop2 92M 92M 0 100% /snap/lxd/24061 /dev/sda15 105M 5.2M 100M 5% /boot/efi /dev/loop3 92M 92M 0 100% /snap/lxd/23991 /dev/loop4 50M 50M 0 100% /snap/snapd/17950 /dev/loop5 50M 50M 0 100% /snap/snapd/18357 /dev/sdb1 1.2T 28K 1.1T 1% /mnt tmpfs 13G 0 13G 0% /run/user/1000
