JFFS2 filesystem support for Pogoplug V3

Hello,

I am trying to utilize the onboard FLASh on the Pogoplug V3 board to load the kernel from it. I tried it with the latest kernel (5.4.224) and also with previous ones, but it seems that JFFS2 file system support it missing.

root@pogo:~/ ls -l /lib/modules/$(uname -r)/kernel/fs
total 64
drwxr-xr-x 16 root root 4096 Nov 20 19:30 .
drwxr-xr-x 11 root root 4096 Nov 20 19:31 ..
drwxr-xr-x  2 root root 4096 Nov 20 19:31 autofs
drwxr-xr-x  2 root root 4096 Nov 20 19:31 btrfs
drwxr-xr-x  2 root root 4096 Nov 20 19:31 cifs
drwxr-xr-x  2 root root 4096 Nov 20 19:31 configfs
drwxr-xr-x  2 root root 4096 Nov 20 19:31 ecryptfs
drwxr-xr-x  2 root root 4096 Nov 20 19:31 erofs
drwxr-xr-x  2 root root 4096 Nov 20 19:31 freevxfs
drwxr-xr-x  2 root root 4096 Nov 20 19:31 fscache
drwxr-xr-x  2 root root 4096 Nov 20 19:31 fuse
drwxr-xr-x  3 root root 4096 Nov 20 19:30 nfs
drwxr-xr-x  2 root root 4096 Nov 20 19:31 nls
drwxr-xr-x  2 root root 4096 Nov 20 19:31 ntfs
drwxr-xr-x  2 root root 4096 Nov 20 19:31 overlayfs
drwxr-xr-x  2 root root 4096 Nov 20 19:31 xfs

Is there any particular reason the supprot is missing?
I am not sure how to add the JFFS2 support to it. Do I need to compile a new kernel or it can be handled as a module?

Thanks

Schnee

schnee,

> I am trying to utilize the onboard FLASh on the
> Pogoplug V3 board to load the kernel from it. I
> tried it with the latest kernel (5.4.224) and also
> with previous ones, but it seems that JFFS2 file
> system support it missing.

If you are loading the kernel from flash, the rootfs has nothing to do with it. It's u-boot that loads the uImage and/or uInitrd, which have to be flashed to NAND in a mtd partition. The rootfs can be on your USB or SATA drive.

Not sure I understood your question correctly?

-bodhi
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Sorry if i was not clear. I am trying to do the same as I did with the Pogo V4, describer here: https://forum.doozan.com/read.php?2,132241

The problem is when I try to mount the NAND as JFFS2 filesystem example

mount -t jffs2 /dev/mtdblock1

I get the error that it is unknown file system.

I am not sure how to add the support to the device.

Schnee

Hi Schnee,


> The problem is when I try to mount the NAND as
> JFFS2 filesystem example
>

> mount -t jffs2 /dev/mtdblock1 
>

> I get the error that it is unknown file system.

I see. Yes, JFFS2 has been not configured into this kernel (a long time ago, it was in).

I think I might have removed it when there was a problem with the kernel size when we were booting with both stock u-boot (5MB limit) and new u-boot. But now I don't support stock u-boot booting anymore, it can be added back to the kernel.

I will do that for the next release.

-bodhi
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Thank you! I will wait till the next release

Schnee