[bunglegrind]

Dear all,
I've upgraded my Linksys Cisco E3000 to a recent version of DD-WRT, specifically DD-WRT v3.0-r35531 mega (03/26/1 (Kernel version: Linux 3.10.108-dd #18336 Mon Mar 26 12:37:55 CEST 2018 mips)

and I'm facing a couple of issue concerning USB drives.

Let me explain in details:
I've attached a 4 GB usb pen (by Verbatim), partitioned and formatted (using gparted) with the ext2 filesystem. Partition label is "Optware" (guess what I'm trying to do? )

In the GUI USB table I've enabled Core USB Support, USB Storage Support and Automatic Drive Mount and I'm trying to mount the drive in /mnt.

Here's the result:

[bushant]

I have 2 thumb drives mounted on 2 routers. 1 has 2 ext2 partitions and 1 ext3.
The other has 2 ext2 partitions.
All are recognized as ext4 in GUI. EXT2 is deprecated I believe.
I also used gparted. (On a linux laptop)
All are auto mounted just fine.
Have you tried "Mount this Partition to /opt" using the UUID?

[Dr_K]

Just name it opt or jffs & dd-wrt will auto mount it just fine...
Though using the mount this to..UUID will also do it

Yes dd-wrt says it is ext4...because it uses an ext4 module...which is backwards compatible

Even if ext2 or ext3 are said to be outdated...there are good & valid reasons to use them on a USB thumb drive

Also I have had success without issues many times using free program
MiniTool Partition Wizard on Windows 7 & Windows 10 creating all types of Linux partitions

Just keep in mind that after a certain predetermined number of reboots the logs will recomend to run e2fsck on whatever partitions you have....weather it is actually necessary is totaly up to you
I'm guessing now, but I presume it's because the lack of Journaling on ext2

[bushant]

[bunglegrind]

Thanks for the quick replies!

Here are my comments:

[Dr_K]

I can assure you that an extX partition labeled "opt" will automount..as I'm sure one named optware will also...
so long that your router's build contains the ext4 module

Maybe check /sys/module/ has a folder named ext4 in it
Or if /lib/ contains libext2fs.so &/or libext2fs.so2...or libext2fs.so.2.4
Or more importantly /lib/modules/4.4.124(or whatever your builds only folder in there is named)/ has ext4.ko

I can also assure you that if you explore the wiki enough..you will see that it will teach you that there are more ways than one to accomplish the same thing....on different pages

Look even harder & you will find information that is outdated and dare I say...flat out wrong....not accusing anyone here, just pointing out information

If you don't have the module...and your flash has enough space left to create a jffs2 partition you can move a copy of ext4.ko there and insmod it at startup

If not enough flash left for jffs2.. see if
/lib/modules/4.4.124(or whatever your builds only folder in there is named)/ has exfat.ko, fat.ko &/or vfat.ko?
Then use that file type to create & mount a jffs partition on your USB drive and insmod ext4.ko from there at startup

Just trying to help the OP.. not argue with anyone insecure with any information that may conflict with what they feel is the only way to do something

[BR07H3R]

When I was using an e3000 the only thing it would recogonise was NTFS.

EDIT: forgot to mention I was on the same build as you at the time. Optware still ran I used it to run bind

[Dr_K]

Just wanted to add that that for you the folders name in
/lib/modules/(is probably)3.10.108-dd/

I checked a couple of my routers on the same build as you

The ones with a 16Mb & greater build flash do have the ext4.ko

While the ones with only a 8Mb build flash do not...but do have the other partition types modules

The ext4.ko module is available with better insmodding instructions through a simple search, or if it's ok to post I could give you a copy from one of mine

[bunglegrind]

[Dr_K]

Not mine... but thank you @egc

https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1151285&highlight=nice+job+razercortex#1151285

Jus a note...as I haven't personally been in your particular situation

Since your startup script insmoding the module may run after dd-wrt would normally automount things you may need to manually mount your extX partition after a pause, in your startup script...
You seam to already know how to accomplish that if needed...but I'd try without first

Or bypass all this and follow as @BR07H3R suggested

I agree that it is rather ridiculous to not be in every build

It seams to be in most all the K26 big & mega builds but just about everyone say they are now broken

Good luck

[bunglegrind]

just for an update

My router does not have a jffs2 option in the GUI

https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=990465&sid=856423dd461cfb0d52f2b89b4d34d9ce


I'm going to create a fat32 partition jffs in the usb drive and add the following commands at startup:

sleep 15 #should check if needed
mount --bind /tmp/mnt/sda_part1/ /jffs
and then the stuff with insmod
and then mounting the partion ext2 to /opt
....

[BR07H3R]

I forgot about that.

Heads up you can enable jffs2 using commands

[Dr_K]

Courious.....whould it NOT automatically mount the partition named "jffs"?

I'd suggest aginst "forcing" a creation of jffs2...
Your router only has 8Mb of flash space and the mega build usual takes all that up on more recent builds
Which is probably why you do not have option in gui

[BR07H3R]

I had enabled it after I had usb up

[Dr_K]