How to expand the remaining TF card space?

Description

I used a 64 G TF card to burn the image system. But when compiling ffmpeg on VisionFive, it indicated that the TF card space was insufficient. After booting Fedora and running df -h, I see that only 12 G for /dev/mmclbk0p4 is mounted on. Where is the rest? How can I use the remaining space?

SoC

JH7100

SBC

VisionFive

Software

Fedora 33

Cause

Fedora image is 12.6 G after decompression.

When you burned the Fedora system, only12.6 G space was allocated in your TF card while the remaining space was not allocated.

Solution

You can expand the remaining space of TF card in the Fedora system.

Procedure

Check the disk usage under the current Fedora system. After entering the command, you can see that the root file system is mounted on the /dev/mmcblk0p4 partition:

[riscv@fedora-starfive ~]$ df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        3.5G     0  3.5G   0% /dev
tmpfs           3.6G     0  3.6G   0% /dev/shm
tmpfs           1.5G  1.2M  1.5G   1% /run
/dev/mmcblk0p4   12G  8.3G  2.9G  75% /
tmpfs           3.6G  4.0K  3.6G   1% /tmp
/dev/mmcblk0p3  458M  130M  314M  30% /boot
/dev/mmcblk0p2  122M  4.5M  118M   4% /boot/efi
tmpfs           718M   52K  718M   1% /run/user/985
tmpfs           718M   44K  718M   1% /run/user/1000
[riscv@fedora-starfive ~]$

Then execute the following command to see that the starting address of partition #4 is 1320960, which will be used when re-creating partition #4 later.
```
[riscv@fedora-starfive ~]$ cat /sys/block/mmcblk0/mmcblk0p4/start
1320960
[riscv@fedora-starfive ~]$
```

Execute the following command to operate the TF card:

[riscv@fedora-starfive ~]$ sudo fdisk /dev/mmcblk0
 
We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:
 
    #1) Respect the privacy of others.
    #2) Think before you type.
    #3) With great power comes great responsibility.
 
[sudo] password for riscv:          #Enter user password
 
Welcome to fdisk (util-linux 2.36.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
 
 
Command (m for help): d         #Delete partition
Partition number (2-4, default 4): 4            #Delete partition #4
 
Partition 4 has been deleted.
 
Command (m for help): n         #Create a new partition
Partition type
   p   primary (2 primary, 0 extended, 2 free)
   e   extended (container for logical partitions)
Select (default p): p           # Create primary partition
Partition number (1,4, default 1): 4            #Create partition #4
First sector (2048-122138623, default 2048): 1320960            #Enter the starting address of partition #4
Last sector, +/-sectors or +/-size{K,M,G,T,P} (1320960-122138623, default 122138623):           #Press "enter" to select default 
Created a new partition 4 of type 'Linux' and of size 57.6 GiB.
Partition #4 contains a ext4 signature.
 
Do you want to remove the signature? [Y]es/[N]o: N          #Do not remove the signature
 
Command (m for help): w         #Write the above operations to the partition table
 
The partition table has been altered.
Syncing disks.
 
[riscv@fedora-starfive ~]$

After the operation is complete, execute the following command to reboot:
```
sudo reboot
```

After rebooting, enter the system and execute the resize2fs command to adjust the space of the ext file system, so that the system disk can be expanded.

[riscv@fedora-starfive ~]$ sudo resize2fs /dev/mmcblk0p4
[sudo] password for riscv:
resize2fs 1.45.6 (20-Mar-2020)
Filesystem at /dev/mmcblk0p4 is mounted on /; on-line resizing r[  313.505284] EXT4-fs (mmcblk0p4): resizing filesystem from 2999808 to 15102208 blocks
equired
old_desc_blocks = 2, new_desc_blocks = 8
[  315.140090] EXT4-fs (mmcblk0p4): resized filesystem to 15102208
The filesystem on /dev/mmcblk0p4 is now 15102208 (4k) blocks long.
 
[riscv@fedora-starfive ~]$ df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        3.5G     0  3.5G   0% /dev
tmpfs           3.6G     0  3.6G   0% /dev/shm
tmpfs           1.5G  1.2M  1.5G   1% /run
/dev/mmcblk0p4   57G  8.3G   49G  15% /
tmpfs           3.6G  4.0K  3.6G   1% /tmp
/dev/mmcblk0p3  458M  130M  314M  30% /boot
/dev/mmcblk0p2  122M  4.5M  118M   4% /boot/efi
tmpfs           718M   52K  718M   1% /run/user/985
tmpfs           718M   44K  718M   1% /run/user/1000
[riscv@fedora-starfive ~]$

Now your root file system has been expanded from 12 G to 57 G.