ext3 & ext4 FS support on mips device

Post new topic   Reply to topic    DD-WRT Forum Forum Index -> Atheros WiSOC based Hardware
Author Message
LukiTJ
DD-WRT Novice


Joined: 02 Nov 2010
Posts: 20

PostPosted: Wed Jul 18, 2018 9:58    Post subject: ext3 & ext4 FS support on mips device Reply with quote
Hi,

is there any reason why on a atheros unit only a kernel module for ext2 is available? See also https://svn.dd-wrt.com/ticket/5813
Sponsor
Per Yngve Berg
DD-WRT Guru


Joined: 13 Aug 2013
Posts: 5798
Location: Romerike, Norway

PostPosted: Wed Jul 18, 2018 13:19    Post subject: Reply with quote
Both of them mounts on my R7800.
htismaqe
DD-WRT User


Joined: 05 Nov 2015
Posts: 471

PostPosted: Wed Jul 18, 2018 13:20    Post subject: Reply with quote
Per Yngve Berg wrote:
Both of them mounts on my R7800.


Good to know. I'm getting ready to install YAMon on my R7800.

_________________
Routing:.......Asus RT-AX88U (Asuswrt-Merlin 384.14)
Switching:....Netgear GS608_V3 & GS605_V4, TrendNet TEG-S82G & TEG-S50G
mrjcd
DD-WRT Guru


Joined: 31 Jan 2015
Posts: 5336
Location: Texas

PostPosted: Wed Jul 18, 2018 13:26    Post subject: Reply with quote
The EA8500 will mount NTFS, FAT32, Ext2, Ext3, or Ext4 Smile
LukiTJ
DD-WRT Novice


Joined: 02 Nov 2010
Posts: 20

PostPosted: Wed Jul 18, 2018 13:51    Post subject: Reply with quote
Good to know not every atheros unit has this restriction. The Buffalo WZR-HP-AG300H comes with ext2 and vfat support as far as I can tell from the available kernel modules. My other Buffalo Router, based on a Broadcom Chipset, has more file-system options available, too.
Why aren't these kernel modules included on the WZR-HP-AG300H?
ian5142
DD-WRT Guru


Joined: 23 Oct 2013
Posts: 2154
Location: Canada

PostPosted: Thu Jul 19, 2018 2:33    Post subject: Flash space Reply with quote
It is all based on Flash space availability. Kernel modules take up space and adding more support on an 8MB flash is hard when a lot of it is used up by core kernel modules for the wireless, etc.
_________________
Before asking a question on the forums, update dd-wrt: Where do I download firmware? I suggest reading it all.

Some dd-wrt wiki pages are up to date, others are not. PM me if you find an old one, I am trying to update them.

Atheros:
Netgear R7800 - gateway, DHCP, QoS, VPN
TP-Link Archer C7 v2 x2 - WDS AP, WDS Station
TP-Link TL-WDR3600 v1 - WDS Station
TP-Link 841nd v8 - WDS Station
D-Link 615 C1 x 4 - not used
D-Link 615 E3 x 2 - not used
D-Link 825 B1 - WDS Station
D-Link 862L A1 x2 - WDS Station
Netgear WNDR3700v2 - WDS Station
UBNT loco M2 x2 - airOS

Broadcom
Asus N66U - backup Gateway
Netgear r6300 v1 - AP
Linksys E2500 - not used
Linksys EA2700 - not used
Linksys 160N v3 x2 - not used
Netgear WNDR3700v3 - not used
MediaTek
UBNT EdgeRouter X - not used
LukiTJ
DD-WRT Novice


Joined: 02 Nov 2010
Posts: 20

PostPosted: Thu Jul 19, 2018 8:25    Post subject: Reply with quote
The WZR-HP-AG300H has 32MB of flash space and my current image size is 29757468 bytes. Gonna Check a recent image where the sized increased to ~31MB
LukiTJ
DD-WRT Novice


Joined: 02 Nov 2010
Posts: 20

PostPosted: Thu Jul 19, 2018 11:08    Post subject: Reply with quote
Latest Release (DD-WRT v3.0-r36330) also only includes ext2 module Sad

ls -l /lib/modules/3.10.108-d3/ext*
-rw-r--r-- 1 root root 63740 Jul 16 04:31 /lib/modules/3.10.108-d3/ext2.ko
al_c
DD-WRT Guru


Joined: 13 Apr 2013
Posts: 2134
Location: Ottawa Canada

PostPosted: Sun Sep 16, 2018 19:31    Post subject: Reply with quote
htismaqe wrote:
Per Yngve Berg wrote:
Both of them mounts on my R7800.


Good to know. I'm getting ready to install YAMon on my R7800.


I recommend ext4 when setting things up for YAMon. In the past, when my USB drive was formatted to ext2, I occasionally ended up with a badly corrupted USB drive if there was an unexpected reboot (power failure). I have *not* had that problem since moving to ext4.

However, some variants have removed support for ext 3 and/or ext4 so that the firmware fits onto routers with limited memory. In that situation, ext2 may be fine but caveat emptor...

Al
Display posts from previous:    Page 1 of 1
Post new topic   Reply to topic    DD-WRT Forum Forum Index -> Atheros WiSOC based Hardware All times are GMT

Navigation

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum