[bootit]

Router Model
Asus RT-AC5300
Firmware Version
DD-WRT v3.0-r58568 (10/15/24)
Kernel Version
Linux 4.4.302-rt232-st56 #12481 SMP Tue Oct 15 05:05:13 +07 2024 armv7l

Hi, I have added an 8GB USB2.0 pen drive on the Router USB port.

Question 1: Have I correctly enabled JFFS on the pen drive for storing DHCP Clients?

The services/services/DHCP Server Setup/Use JFFS2 for Client Lease DB = (Not mounted)

I followed DDWRT USB storage support.doc from https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=308273
In the article it says:

"Before enabling storage for Client Lease DB into JFFS2 flash storage, JFFS2 support must be enabled. JFFS2 Support is located on the Administration / Management tab." However, the post says "Either you enable JFFS2 on the Administration/Management page and thus create a rewritable part of your NVRAM or use an USB stick as a drive (which is the recommended way).

Do not do both otherwise you can not write to JFFS.

To use USB storage and mount JFFS on your USB stick see the attached document.

There are builds which only let you write to your USB stick after you disabled the previously enabled JFFS2 when you erase nvram and put all your settings in manually, if you have to do that then get a more recent build.

Action taken and is this correct?
administration/management/JFFS2 Support = enable and DD-WRT reports Total / Free Size
100.66 MB / 98.17 MB

services/services/DHCP Server Setup/
Use JFFS2 for Client Lease DB = tick,
Use NVRAM for Client Lease DB = remains unticked so as not to use both as warned.

Now for storage services
I followed DDWRT USB storage support.doc from https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=308273

I now have 3 partitions that auto mounted
2.5GB FAT32 Labelled "File_Share" FAT32 for cross system copying if you pull the drive
2.5GB EXT2 Labelled "jffs" for autodetect on label by DD-WRT EXT4 do not use as more writes for journaling
2.5GB EXT Labelled "opt" for autodetect on label by DD-WRT

[egc]

[Per Yngve Berg]

Can you access any files at /jffs ?

[bootit]

I browsed using SAMBA to \\DD-WRT\jffs which is the USB not the flash memory (nvram).
The directory is empty with a subdirectory \lost+found

How do I check the use of \jffs in NVRAM (/dev/mtdblock/4)?

BusyBox v1.37.0 (2024-10-15 05:06:40 +07) built-in shell (ash)

0;root@DD-WRT: ~root@DD-WRT:~# df | grep jffs
/dev/mtdblock/4 2538747 3 2407672 0% /jffs
/dev/sda2 2538747 3 2407672 0% /jffs
0;root@DD-WRT: ~root@DD-WRT:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 26112 26112 0 100% /
none 512 0 512 0% /dev
/dev/mtdblock/4 2538747 3 2407672 0% /jffs
/dev/sda1 2615280 12 2615268 0% /tmp/mnt/sda1
/dev/sda3 2537723 3 2406700 0% /opt
/dev/sda3 2537723 3 2406700 0% /tmp/proftpd/users/ftp/ftp
/dev/sda3 2537723 3 2406700 0% /tmp/proftpd/users/ftp/ftp
/dev/sda3 2537723 3 2406700 0% /tmp/proftpd/users/ftp/ftp
/dev/sda2 2538747 3 2407672 0% /jffs
/dev/sda3 2537723 3 2406700 0% /tmp/proftpd/users/ftp/ftp
0;root@DD-WRT: /devroot@DD-WRT:/dev# cd /dev/mtdblock
0;root@DD-WRT: /dev/mtdblockroot@DD-WRT:/dev/mtdblock# ls
0 1 2 3 4
0;root@DD-WRT: /dev/mtdblockroot@DD-WRT:/dev/mtdblock# cd /4
-sh: cd: can't cd to /4: No such file or directory

Router Name
DD-WRT
Router Model
Asus RT-AC5300
Firmware Version
DD-WRT v3.0-r58568 std (10/15/24)
Kernel Version
Linux 4.4.302-rt232-st56 #12481 SMP Tue Oct 15 05:05:13 +07 2024 armv7l

[bootit]

[egc]

👍

[Alozaros]

Client Lease DB into JFFS although it seems tempting this is a bad idea..and should be only used with caution, lots of understanding, in case of enormous long list of clients and only from trained/skilled administrators... otherwise people come back with tons of questions and it could be not always working as it should...

Instead for adding static clients to the router DNSmasq Infrastructure>Additional Options box you can use this format--->

dhcp-host=xx:xx:xx:xx:xx:xx,MI6-Ops-PC,192.168.1.101,infinite

xx:xx:xx:xx:xx:xx is the client mac address you have to add, client names must not contain spaces/intervals or some extra/special symbols, infinite is the time factor you can replace it with any other time(in minutes format).. you can copy/paste those to there from txt file or PDF and save&apply after, that is how many of us are adding static clients...
you can even add 2 mac addresses to one/same IP but those must not be connected at the same time...