Another filesystem for use with microSDHC

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From a telnet session

# cat /proc/filesystems
nodev sysfs
nodev rootfs
nodev bdev
nodev proc
nodev debugfs
nodev sockfs
nodev pipefs
nodev anon_inodefs
nodev futexfs
nodev tmpfs
nodev inotifyfs
nodev devpts
cramfs
nodev ramfs
vfat
yaffs
yaffs2

# cd bin
# ls
start
ioctl
smd
insmod
sleep
iftop
setprop
ifconfig
setconsole
id
sendevent
hd
schedtop
getprop
route
getevent
rmmod
dmesg
rmdir
df
rm
wpa_supplicant
wpa_cli
dd
wlan_loader
toolbox
telnetd
system_server
svc
surfaceflinger
renice
su
ssltest
sh
servicemanager
date
service
sdutil
sdptool
rild
radiooptions
qemud
reboot
pm
playmp3
ping
netcfg
cmp
mountd
monkey
mediaserver
logwrapper
logcat
linker
ps
itr
installd
input
htclogkernel
chmod
hostapd_cli
hostapd
hcid
hciattach
flash_image
fillup
printenv
dvz
dumpsys
dumpstate
dhcpcd
cat
dexopt
debuggerd
debug_tool
dbus-daemon
dalvikvm
app_process
notify
am
akmd
dumpcrash
netstat
mv
mount
wipe
mkdosfs
watchprops
mkdir
vmstat
lsmod
umount
ls
top
log
sync
ln
stop
kill

So from my understanding I can only mount sdcards with fat32, fat16, fat12 or yaffs2. Only formatting of fat is supported as well. cramfs doesn't seem that interesting as it is read-only. yaffs2 is made for NAND and I don't know how similar it is to SD-cards. I formatted my card with ext3 before I saw this info and it didn't work. I'm using fat32 for now, but as a (almost) linux purist and the limitations of file size and names I'm interested in using something else.

The Kaiser, Vogue and Freerunner can use both ext2 and ext3 because of a custom kernel. Is that the only way?

There was someone in #android on Freenode that got a 4 GB partition in ext2 to work.

gary@fluffy:~/logs$ cat freenode_#android.log | grep "ext2"
[Mon Dec 1 2008] [00:11:55] <sparkle> i just cheat and have a 4gb ext2 partition, but that's not really an option for any app you want to ship to the masses

Try asking him.

(S)he has loaded the ext2 module. This can be done with root access, but all those without are out of luck (for now anyways )