how to increase size of root file system partition on sd card

[srinivas_123]

i am using imx8mplus custom board . i build the IMXLXYOCTOUG v.LF6.6.3_1.0.0 BSP .

i build the imx-image-full.

i used the 32 gb SD card

i flashed the wic.zst image into sd card by using the below command

zstdcat imx-image-full-imx8mp-lpddr4-evk.rootfs.wic.zst | sudo dd of=/dev/sdb bs=1M conv=fsync

i ran the my python program which continously stores the images in root(/) directory .

after running my application for 30 mins , it is getting OSError: [Errno 28] No space left on device

memory space after ruuning my program

how to increase the size of root directory . where i have to modify .please help me out .

[Harvey021]

Hi,

One way I tried as followings.

sudo parted /dev/sdb unit MiB resizepart 2 20001  /*You can decide the size accordingly, here mine is 20001*/

sudo dd if=imx-boot-imx8mnevk-sd.bin-flash_evk of=/dev/sdb bs=1k seek=32 conv=fsync

Then you can follow up the guide <4.3.5 Copying the kernel image and DTB file> of IMX_LINUX_USERS_GUIDE.pdf  to copy kernel, dtb to sdb1 with vfat partition

then follow up the <4.3.6 Copying the root file system (rootfs)> to copy rootfs to sdb2 with ext4 partition

root@imx8mnevk:~# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 19G 5.2G 13G 29% /
devtmpfs 619M 4.0K 619M 1% /dev
tmpfs 941M 0 941M 0% /dev/shm
tmpfs 377M 8.9M 368M 3% /run
tmpfs 941M 12K 941M 1% /tmp
tmpfs 941M 0 941M 0% /var/volatile
/dev/mmcblk2p1 84M 33M 51M 39% /run/media/boot-mmcblk2p1
/dev/mmcblk1p1 84M 34M 50M 41% /run/media/mmcblk1p1
/dev/mmcblk2p2 6.0G 4.2G 1.5G 75% /run/media/root-mmcblk2p2

Should there are better ways to implement. here is a reference - Solved: Resize rootfs of Yocto image - NXP Community

Regards

Harvey