[Galaxy Ace II Q&A, Help & Troubleshooting] der-joker:
[MENTION=5186426]buaser[/MENTION]:

Can you upload mke2fs binary please? I'm suffering this error right now and can't use my phone...

E:

I formated /data via an adb shell with the command "busybox mke2fs /dev/block/mmcblk0p5".

The command was sucessfully and made a brand new ext4 filesystem. But one mount option has changed after that: data=writeback.

Before formating the option was "data=ordered", like on /system

# mount
rootfs / rootfs rw 0 0
tmpfs /dev tmpfs rw,noatime,nodiratime,mode=755 0 0
devpts /dev/pts devpts rw,noatime,nodiratime,mode=600 0 0
proc /proc proc rw,noatime,nodiratime 0 0
sysfs /sys sysfs rw,noatime,nodiratime 0 0
none /sys/kernel/debug debugfs rw,noatime,nodiratime 0 0
none /acct cgroup rw,noatime,nodiratime,cpuacct 0 0
tmpfs /mnt/asec tmpfs rw,noatime,nodiratime,mode=755,gid=1000 0 0
tmpfs /dev/shm tmpfs rw,noatime,nodiratime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,noatime,nodiratime,mode=755,gid=1000 0 0
/dev/block/mmcblk0p3 /system ext4 rw,noatime,nodiratime,commit=60,barrier=1,[COLOR="Red"]data=ordered[/COLOR],noauto_da_alloc 0 0
/dev/block/mmcblk0p2 /modemfs ext4 rw,nosuid,nodev,noatime,nodiratime,barrier=1,data=ordered 0 0
/dev/block/mmcblk0p4 /cache ext4 rw,nosuid,nodev,noatime,nodiratime,commit=60,barrier=0,data=ordered,noauto_da_alloc 0 0
/dev/block/mmcblk0p7 /efs ext4 rw,nosuid,nodev,noatime,nodiratime,barrier=1,data=ordered 0 0
/dev/block/mmcblk0p5 /data ext4 rw,nosuid,nodev,noatime,nodiratime,commit=30,barrier=0,[COLOR="Red"]data=writeback[/COLOR],noauto_da_alloc 0 0
/dev/block/mmcblk0p1 /mnt/.lfs j4fs rw,noatime,nodiratime 0 0
/dev/block/vold/179:8 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,noatime,nodiratime,uid=1000,gid=1015,fmask=0002,dmask=0002,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/block/vold/179:17 /mnt/sdcard/external_sd vfat rw,dirsync,nosuid,nodev,noexec,noatime,nodiratime,uid=1000,gid=1015,fmask=0002,dmask=0002,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/block/vold/179:17 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,noatime,nodiratime,uid=1000,gid=1015,fmask=0002,dmask=0002,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
tmpfs /mnt/sdcard/external_sd/.android_secure tmpfs ro,noatime,nodiratime,size=0k,mode=000 0 0
#

Does somebody know how to fix that?

Later i will do a fsck to check if partion is clean and checkable now...

E again:

fsck was successful:

~ # e2fsck -v /dev/block/mmcblk0p5
e2fsck 1.41.11 (14-Mar-2010)
/dev/block/mmcblk0p5 was not cleanly unmounted, check forced.
Pass 1: Checking inodes, blocks, and sizes
Deleted inode 8822 has zero dtime. Fix<y>? yes

Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Block bitmap differences: -35182
Fix<y>? yes

Free blocks count wrong for group #1 (2542, counted=2543).
Fix<y>? yes

Free blocks count wrong (231604, counted=231605).
Fix<y>? yes

Inode bitmap differences: -8822
Fix<y>? yes

Free inodes count wrong for group #1 (5868, counted=5869).
Fix<y>? yes

Free inodes count wrong (76679, counted=76680).
Fix<y>? yes

/dev/block/mmcblk0p5: ***** FILE SYSTEM WAS MODIFIED *****

3320 inodes used (4.15%)
375 non-contiguous files (11.3%)
3 non-contiguous directories (0.1%)
# of inodes with ind/dind/tind blocks: 370/21/0
87883 blocks used (27.51%)
0 bad blocks
0 large files

2575 regular files
730 directories
0 character device files
0 block device files
2 fifos
0 links
0 symbolic links (0 fast symbolic links)
4 sockets
--------
3311 files
~ # e2fsck -v -f /dev/block/mmcblk0p5
e2fsck 1.41.11 (14-Mar-2010)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information

3320 inodes used (4.15%)
375 non-contiguous files (11.3%)
3 non-contiguous directories (0.1%)
# of inodes with ind/dind/tind blocks: 370/21/0
87883 blocks used (27.51%)
0 bad blocks
0 large files

2575 regular files
730 directories
0 character device files
0 block device files
2 fifos
0 links
0 symbolic links (0 fast symbolic links)
4 sockets
--------
3311 files
~ #

I hope my /data won't die anymore.