PROCESSOR-SDK-J722S: Why the exFAT-formatted SSD is not recognized.

Hi Yongsig,

Are you trying to read an SD card that's attached with a USB to SD card reader or boot off of an exFAT SD card?

Can you also send the entire dmesg log?

Best,
Jared

Hi Jared.

Jared McArthur said:

Are you trying to read an SD card that's attached with a USB to SD card reader or boot off of an exFAT SD card?

--> No. I used a default image for boot-up. I download the image from this LINK.

And then, as I mentioned above, I copied some files from Yocto-build to sdcard.

I'll attach the entire dmesg log.entire_dmesg.txt

sda in the log means the exFAT-formatted SSD.

Also I couldn't see any mounted log file in /run/systemd/transient/

root@j722s-evm:/run/systemd/transient# ls -al
total 12
drwxr-xr-x  2 root root 100 Nov  7 21:08  .
drwxr-xr-x 23 root root 600 Nov  7 21:08  ..
-rw-r--r--  1 root root 301 Nov  7 21:08 'run-media-BOOT\x2dmmcblk1p1.mount'
-rw-r--r--  1 root root 301 Nov  7 21:08  run-media-mmcblk0p1.mount
-rw-r--r--  1 root root 385 Nov  7 21:08  session-c1.scope
root@j722s-evm:/run/systemd/transient# vi run-media-mmcblk0p1.mount

Best regards

Yongsig

Hi Yongsig,

How is the SD card connected to the board?

Best,
Jared

Hi Jared.

I'm sorry, I don't understand why you are asking about the sdcard connection.

I'll explain the environment again.

1. flashed the sdcard using these command in psdk rtos 10.0.0.5.

$ sudo ./sdk_builder/scripts/mk-linux-card.sh /dev/sdc
$ ./sdk_builder/scripts/install_to_sdcard.sh

2. Check booting on TDA4AEN EVM

   --> Booting OK

3. Check if an exFAT-formatted SSD (NOT SDCARD) through USB3.0 port is recognized or not. 

   --> NOT recognized

4. Yocto build regarding exFAT

5. Copy image by Yocto-build to sdcard (Please see below)

Yongsig Do said:

And then I copied the images to sdcard as below.

  --> NOT work

So, I'm wondering what I should do.

Best regards

Yongsig

Hi Yongsig,

Sorry, I see now that you're asking about an exFAT SSD. Apologies about that misunderstanding.

Do you have either the exfat-utils or fuse-exfat package installed?

Additionally, can you send the output of lsblk?

Best,
Jared

Hi Jared

I installed as follow already.

- MACHINE="j722s-evm" bitbake fuse-exfat
- MACHINE="j722s-evm" bitbake fuse
- MACHINE="j722s-evm" bitbake exfatprogs

It seems like exfat-utils is deprecated.  exfat-utils is not supported PSDK Linux 10.0.0.8.  So I have to install exfatprogs instead of exfat-utils.

Jared McArthur said:

Additionally, can you send the output of lsblk?

root@j722s-evm:/run/media# lsblk
NAME         MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
sda            8:0    0  1.8T  0 disk
`-sda1         8:1    0  1.8T  0 part
mtdblock0     31:0    0  512K  0 disk
mtdblock1     31:1    0    2M  0 disk
mtdblock2     31:2    0    4M  0 disk
mtdblock3     31:3    0  256K  0 disk
mtdblock4     31:4    0  256K  0 disk
mtdblock5     31:5    0 55.8M  0 disk
mtdblock6     31:6    0  256K  0 disk
mmcblk0      179:0    0 29.6G  0 disk
|-mmcblk0p1  179:1    0   16M  0 part /run/media/mmcblk0p1
`-mmcblk0p2  179:2    0 29.6G  0 part
mmcblk0boot0 179:32   0 31.5M  1 disk
mmcblk0boot1 179:64   0 31.5M  1 disk
mmcblk1      179:96   0 29.7G  0 disk
|-mmcblk1p1  179:97   0  128M  0 part /run/media/BOOT-mmcblk1p1
`-mmcblk1p2  179:98   0 29.6G  0 part /
root@j722s-evm:/run/media# df -T
Filesystem     Type     1K-blocks    Used Available Use% Mounted on
/dev/root      ext4      30371260 6826624  21976508  24% /
devtmpfs       devtmpfs   2891692       4   2891688   1% /dev
tmpfs          tmpfs      3351660       0   3351660   0% /dev/shm
tmpfs          tmpfs      1340664    9948   1330716   1% /run
tmpfs          tmpfs      3351660       8   3351652   1% /tmp
tmpfs          tmpfs      3351660       4   3351656   1% /var/volatile
/dev/mmcblk0p1 vfat         16334       2     16332   1% /run/media/mmcblk0p1
/dev/mmcblk1p1 vfat        129039    3604    125436   3% /run/media/BOOT-mmcblk1p1
tmpfs          tmpfs       670332       4    670328   1% /run/user/0

Best regards

Yongsig

Hi Yonsig,

Did you install the generated ipks?

Additionally, if you mount sda1, can you access the files?

Best,
Jared

Hi, Jared.

No. I just copied the generated images. But I know that if I install the generated ipks, it'll be same as the images.

For example, generated images are created in yocto-build/build/arago-tmp-default-glibc/work/aarch64-oe-linux/exfatprogs/1.2.2/image/.

Jared McArthur said:

Additionally, if you mount sda1, can you access the files?

I can't access the sda. When I put 'df -T', no directory is mounted as sda.

Best regards

Yongsig

Hi Yongsig,

I added the following to my local.conf:

IMAGE_INSTALL:append = " fuse-exfat exfatprogs"

I then rebuilt the tisdk-base-image for the J722s.

I was able to mount and read the contents of an exFAT USB by executing the following:

root@am67-sk:~# mkdir /mnt/exfat
root@am67-sk:~# mount.exfat-fuse /dev/sda /mnt/exfat
FUSE exfat 1.4.0 (libfuse2)
root@am67-sk:~# cd /mnt/exfat/
root@am67-sk:/mnt/exfat# ls
helloworld.txt
root@am67-sk:/mnt/exfat# cat helloworld.txt 
hello world!

Best,
Jared

Hi. Jared

Would you please give me the guidance more details?

I want to know what file you add "IMAGE_INSTALL:append = " fuse-exfat exfatprogs" in.

and then It looks like you are using am67-sk board not J722s-evm as me.

Best regards

Yongsig

Hi Yongsig,

Yongsig Do said:

I want to know what file you add "IMAGE_INSTALL:append = " fuse-exfat exfatprogs" in.

The local.conf file can be found within the build/conf directory. It's used for variables that you want to temporarily edit in a local build.

You can also check whether the packages are installed by running (on the board):

$ opkg list | grep exfat

Yongsig Do said:

and then It looks like you are using am67-sk board not J722s-evm as me.

The AM67-SK and J722S-EVM are the same board. They both have the superset device J722S.

Best,
Jared

Hi Jared

Thank you for your help.

I succeeded the exFAT-formatted SSD mounting manually.

I tried manually because it was not mounted auto.

But I want it to mount automatically.

As I know, It should be mounted automatically using /etc/udev/scripts/mount.sh. Am I right?

For example, In the case of ext4-formatted SSD is mounted auto well.

root@j722s-evm:/etc/udev/scripts# df -T
Filesystem     Type      1K-blocks      Used  Available Use% Mounted on
/dev/root      ext4       30371260   6795120   22008012  24% /
devtmpfs       devtmpfs    2891692         4    2891688   1% /dev
tmpfs          tmpfs       3351660         0    3351660   0% /dev/shm
tmpfs          tmpfs       1340664      9956    1330708   1% /run
tmpfs          tmpfs       3351660        12    3351648   1% /tmp
tmpfs          tmpfs       3351660         4    3351656   1% /var/volatile
/dev/mmcblk0p1 vfat          16334         2      16332   1% /run/media/mmcblk0p1
/dev/mmcblk1p1 vfat         129039      3604     125436   3% /run/media/mmcblk1p1
/dev/sda1      ext4     1921723584 114001124 1710030456   7% /run/media/sda1
tmpfs          tmpfs        670332         4     670328   1% /run/user/0

Do you have an idea about that?

Best regards

Yongsig

Hi Yongsig,

Can you post the mount.sh script? I assume it doesn’t support exFAT, and that is why it’s not mounted automatically.

Best,

Jared

Hi Jared

I'm sorry I can't attach the file due to an error on web-site. 'Insert code' has same error as well.

But I believe you can find it in psdk_rtos_10.0.0.5/targetfs/etc/udev/scripts/mount.sh.

I added some codes to support exFAT.

is_filesystem_supported() {
    while read -r fs; do
       # Stradvisoin Start
       if [ "${fs#nodev}" = "$1" ] || [ "$1" = "exfat" ]; then
       # Stradvisoin End
       # if [ "${fs#nodev}" = "$1" ]; then
           return 0
       fi
    done < "/proc/filesystems"
    return 1
}

automount_systemd() {
...

    # If filesystemtype is vfat, change the ownership group to 'disk', and
    # grant it with  w/r/x permissions.
    case $ID_FS_TYPE in
    vfat|fat)
        MOUNT="$MOUNT -o umask=007,gid=`awk -F':' '/^disk/{print $3}' /etc/group`"
        ;;
    # Stradvisoin Start
    exfat)
        MOUNT="mount -v"
        ;;
    # Stradvision End
    swap)
        return ;;
    lvm*|LVM*)
        return ;;
    # TODO
    *)
        ;;
    esac

...
}

and then I can see the logs as below.

mount -t exfat /dev/sda1 /run/media/sda1
fusermount: mount failed: Operation not permitted

Best regards

Yongsig

Hi Yongsig,

There’s an Arch Linux forum that states that exfat-utils is required for automounting.

https://bbs.archlinux.org/viewtopic.php?id=276405

Can you try adding that to the IMAGE_INSTALL variable?

Best,
Jared