[Claudine]

If I enable jffs it is just readonly. How does it come?
My maschine has 128MB of flash Memory and not all is used, there should be plenty memory left for an writeable jffs.

[habeIchVergessen]

enable jffs2 support on Administration -> Management config page (clear jffs2 needs to be checked).

check output of

[Claudine]

jffs2 is enabled
clean jffs2 behaves like an altzheimer patient, it's forgotten after reboot

mount -> no output
lsmod -> no output

[habeIchVergessen]

clean jffs enabled formats jffs once. after this it is disabled.

mount doesn't output anything?

no line containing proc, rootfs or sysfs? no /jffs?

lsmod also without any output?

no ath9k or usb*?

[Claudine]

sorry, now there is some output:

mount:

rootfs on / type rootfs (rw)
/dev/root on / type squashfs (ro,relatime)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
ramfs on /tmp type ramfs (rw,relatime)
none on /dev type tmpfs (rw,relatime,size=512k)
devpts on /dev/pts type devpts (rw,relatime,mode=600)
devpts on /proc/bus/usb type usbfs (rw,relatime)

lsmod:

Module Size Used by
jffs2 87491 0
lzo_decompress 1348 0
lzo_compress 2404 0
lzma_compress 29199 1 jffs2
usb_storage 36208 0
sr_mod 11876 0
cdrom 31039 1 sr_mod
sd_mod 25844 0
scsi_mod 77467 3 usb_storage,sr_mod,sd_mod
ehci_pci 2596 0
ehci_hcd 33066 1 ehci_pci
usbcore 115135 4 usb_storage,ehci_pci,ehci_hcd
usb_common 1114 1 usbcore
ath9k 98521 0
ath9k_common 1398 1 ath9k
ath9k_hw 380436 2 ath9k,ath9k_common
ath 13199 3 ath9k,ath9k_common,ath9k_hw
mac80211 244484 1 ath9k
cfg80211 172235 2 ath9k,mac80211
compat 839 5 ath9k,ath9k_common,ath9k_hw,mac80211,cfg80211
ag71xx 22579 0

[habeIchVergessen]

modules looks good. mount doesn't.

run cat /proc/mtd

search for ddwrt (like mtd3).

run mount -t jffs2 /dev/mtdblock/<your number; without mtd> /jffs

run dmesg and look for mount errors on output

[Claudine]

unfortunately not the hoped effect


-> mount /dev/mtdblock/3 /jffs
-> dmesg

8<--------------
<6>[ 1447.670000] jffs2: version 2.2. (NAND) (ZLIB) (LZMA) (RTIME) (CMODE_SIZE) © 2001-2006 Red Hat, Inc.
<5>[ 1451.430000] jffs2: Cowardly refusing to erase blocks on filesystem with no valid JFFS2 nodes
<5>[ 1451.440000] jffs2: empty_blocks 0, bad_blocks 0, c->nr_blocks 822
-------------->8

[habeIchVergessen]

format jffs seems to fail.

you can try to run the following command to format the partition. but you have to know the correct block size of your flash chip !!! be careful !!!

[fritzfox]

Please help - any suggestions? My jffs is read-only as well. I am using a Linksys e2500 flashed with mega. The e2500 has 8MB of flash.

I (of course) tried all the steps on http://www.dd-wrt.com/wiki/index.php/Journalling_Flash_File_System, still read-only after several attempts and reboots.

At last I tried
mkfs.jffs2 -o /dev/mtdblock/4 -n -b -e 0x10000 -p
and it says mkfs.jffs2 is not found.
I tried looking in /sbin and /usr/sbin and didn't see it there. `which` provided no location for mkfs.jffs2 of course.
I did notice an `mtd` command which I could not get to work to do the same thing.

----
my mounts show no jffs (same)
my modules show jffs2 loaded with nothing using it, but a few compression modules used by it. (same)
my /proc/mtd shows
mtd4: 00020000 00010000 "ddwrt"

when I try `mount /dev/mtdblock/4 /jffs`, dmesg contains no traces of jffs. Also dmesg does not "grow" after the mount command.

root@DD-WRT:/# dmesg > /tmp/dmesg.1
root@DD-WRT:/# mount /dev/mtdblock/4 /jffs
root@DD-WRT:/# dmesg > /tmp/dmesg.2
dmesg.1 and dmesg.2 are the same

Thanks!
--Fritz

[LOM]

[fritzfox]

[Claudine]

1) mkfs.jffs2 -o /dev/mtdblock/3 -n -b -e 0x20000
2) mount -t jffs2 /dev/mtdblock/3 /jffs

Administration -> JFFS2 support: Total / Free Size 102.75 MB / 100.12 MB

check also this: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=171458&highlight=wndr4300

Thanks to user habeIchVergessen

[papagogo]

It's a great method to solve wndr4300 's some issue from customed openwrt firmware.