Upgrading our OE stack from BSP 2.5 to 2.8 (fresh build) and noticed that our SD cards which are formatted in ext4 are no longer mounted. Reformatting in ext3 works fine, but is a pain (have to transfer existing data).
It would appear that the kernel doesn’t support ext4 by default. I’ve built the image from the angstrom-lxde-image with a few additions and tweaks (none that relate to filesystems).
root@pvp:/media# cat /proc/filesystems
nodev sysfs
nodev rootfs
nodev bdev
nodev proc
nodev cgroup
nodev tmpfs
nodev devtmpfs
nodev debugfs
nodev sockfs
nodev usbfs
nodev pipefs
nodev anon_inodefs
nodev rpc_pipefs
nodev devpts
ext3
ext2
nodev ramfs
vfat
nodev nfs
nodev nfs4
nodev cifs
nodev autofs
nodev fuse
fuseblk
nodev fusectl
nodev oprofilefs