[Optimus One, P500, V General] smartu:
Yes I have plenty of space...:D

It's very strange, if a add a umount at the beginning of the script, then the partition is rw in the log of the script, but after the reboot is finished the partition is ro again. I duplicated the script to 99link2sd and it is the same: rw in the log and ro, when the boot process is finished.

OK, I will compare the logs of the 20130215 Version, Kernel 2.x (working) and the actual ROM and see....

---------- Post added at 07:43 AM ---------- Previous post was at 07:10 AM ----------

It's getting stranger and stranger. I have a 'divice busy' in both logs:

Log of 20130215 (working):

Fri Jun 14 00:00:50 CEST 2013 mounting...

mount: Device or resource busy

mount: Device or resource busy

rootfs / rootfs ro,relatime 0 0

tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0

devpts /dev/pts devpts rw,relatime,mode=600 0 0

proc /proc proc rw,relatime 0 0

sysfs /sys sysfs rw,relatime 0 0

tmpfs /storage tmpfs rw,relatime,mode=050,gid=1028 0 0

tmpfs /mnt/secure tmpfs rw,relatime,mode=700 0 0

tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0

tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0

/dev/block/mtdblock1 /system yaffs2 ro,relatime 0 0

/dev/block/mtdblock9 /data yaffs2 rw,nosuid,nodev,relatime 0 0

/dev/block/mtdblock8 /cache yaffs2 rw,nosuid,nodev,relatime 0 0

/sys/kernel/debug /sys/kernel/debug debugfs rw,relatime 0 0

/dev/block/mmcblk0p2 /data/sdext2 ext4 rw,relatime,barrier=1,data=ordered 0 0

Fri Jun 14 00:00:50 CEST 2013 mount finished

Log of 20130609-NIGHTLY-p500 (not working):

Thu Jun 13 19:17:20 CEST 2013 mounting...

mount: Device or resource busy

mount: Device or resource busy

rootfs / rootfs ro,relatime 0 0

tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0

devpts /dev/pts devpts rw,relatime,mode=600 0 0

none /dev/cpuctl cgroup rw,relatime,cpu 0 0

proc /proc proc rw,relatime 0 0

sysfs /sys sysfs rw,relatime 0 0

/sys/kernel/debug /sys/kernel/debug debugfs rw,relatime 0 0

tmpfs /storage tmpfs rw,relatime,mode=050,gid=1028 0 0

none /acct cgroup rw,relatime,cpuacct 0 0

tmpfs /mnt/secure tmpfs rw,relatime,mode=700 0 0

tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0

tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0

tmpfs /mnt/fuse tmpfs rw,relatime,mode=775,gid=1000 0 0

/dev/block/mtdblock1 /system yaffs2 ro,relatime 0 0

/dev/block/mtdblock9 /data yaffs2 rw,nosuid,nodev,relatime 0 0

/dev/block/mmcblk0p2 /data/sdext2 ext4 ro,relatime,user_xattr,barrier=1,data=ordered 0 0

/dev/block/mtdblock8 /cache yaffs2 rw,nosuid,nodev,relatime 0 0

/dev/block/dm-0 /mnt/asec/com.keramidas.TitaniumBackupPro-1 ext4 ro,dirsync,nosuid,nodev,noatime,user_xattr,barrier=1 0 0

/dev/block/vold/179:1 /storage/sdcard0 vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0

tmpfs /storage/sdcard0/.android_secure tmpfs ro,relatime,size=0k,mode=000 0 0

/dev/block/dm-1 /mnt/asec/com.speedsoftware.rootexplorer-2 ext4 ro,dirsync,nosuid,nodev,noatime,user_xattr,barrier=1 0 0

/dev/block/dm-2 /mnt/asec/com.keramidas.TitaniumBackup-1 ext4 ro,dirsync,nosuid,nodev,noatime,user_xattr,barrier=1 0 0

/dev/block/dm-3 /mnt/asec/com.estrongs.android.pop-1 ext4 ro,dirsync,nosuid,nodev,noatime,user_xattr,barrier=1 0 0

Thu Jun 13 19:17:20 CEST 2013 mount finished

So I remember, that there two places, where scripts are executed. I look into '/etc/init.d. Is there a other?