My English is poor, so I only give the code, without more explanation.
code modiy from ownhere's data2ext
create 3rd ext4 partion for loopback device.
Please note '-o sync,commit=5',This will enhance the stability.
Code:
$BUSYBOX mknod /dev/loop0 b 7 0
$BUSYBOX losetup /dev/loop0 /dev/block/mmcblk3p3
$BUSYBOX mount -t ext4 -o sync,commit=5,barrier=1,nouser_xattr,errors=continue,noatime,nodiratime,nosuid,nodev /dev/loop0 /mnt/asec/extdata
you can turn off journal for speed：
Code:
/system/bin/tune2fs -O ^has_journal /dev/block/mmcblk3p3
Code:
busybox ls -lL /dev/loop*
brw------- 1 0 0 7, 0 Jan 9 19:17 /dev/loop0
brw------- 1 0 0 7, 1 Jan 9 19:17 /dev/loop1
brw------- 1 0 0 7, 2 Jan 9 19:17 /dev/loop2
brw------- 1 0 0 7, 3 Jan 9 19:17 /dev/loop3
brw------- 1 0 0 7, 4 Jan 9 19:17 /dev/loop4
brw------- 1 0 0 7, 5 Jan 9 19:17 /dev/loop5
brw------- 1 0 0 7, 6 Jan 9 19:17 /dev/loop6
brw------- 1 0 0 7, 7 Jan 9 19:17 /dev/loop7
Scoring won't be so high, but stability will increase a lot
Hi Chenglu, I've actually already tried to modify your original data2loop script to use ext4 and run it with a kernel with ext4 built in. It actually benchmarks great on first boot, somewhat better than the original ext2 data2loop version, but the tablet won't boot again, it crashes sometime during boot and I have to wipe data and restart.
Not sure if the sync,commit=5 options will make a difference - maybe I'll give that a try and see if it helps...
EDIT: No, it still pukes out on reboot, those options don't make a difference. I've attached my inandop.sh file here. If you diff this with yours, there are only a few changes, and I'm just not sure why it doesn't work. Any ideas?
Chenglu...
Thanks... this should help... but I am still very concerned with this approach..
Even though you are performing a sync you still can not guarantee that the data has been flushed out.. Flushing will depend on what other operations are in queue within the I/O sub system. In addition, right now you have a commit of every 5 seconds which honestly again leaves room for possible corruption. Again should help as this setting is meant for removable storage...
Lastly DO NOT turn off the Journal. yes it will speed up the file system BUT at a HUUGE risk of data loss in the event of unclean shutdown. This is your only fail safe that ensures filesystem consistency even across unclean shutdown.
Generally I agree with this approach for many situations but NOT your entire system partition or critical data partitions...
These devices are too portable with unreliable power sources (not the battery but the ability for it to reboot on its own and the ability for you to accidentally power it off)..
I for one am against this performance boost...
Chenglu said:
My English is poor, so I only give the code, without more explanation.
code modiy from ownhere's data2ext
create 3rd ext4 partion for loopback device.
Please note '-o sync,commit=5',This will enhance the stability.
Code:
$BUSYBOX mknod /dev/loop0 b 7 0
$BUSYBOX losetup /dev/loop0 /dev/block/mmcblk3p3
$BUSYBOX mount -t ext4 -o sync,commit=5,barrier=1,nouser_xattr,errors=continue,noatime,nodiratime,nosuid,nodev /dev/loop0 /mnt/asec/extdata
you can turn off journal for speed：
Code:
/system/bin/tune2fs -O ^has_journal /dev/block/mmcblk3p3
Code:
busybox ls -lL /dev/loop*
brw------- 1 0 0 7, 0 Jan 9 19:17 /dev/loop0
brw------- 1 0 0 7, 1 Jan 9 19:17 /dev/loop1
brw------- 1 0 0 7, 2 Jan 9 19:17 /dev/loop2
brw------- 1 0 0 7, 3 Jan 9 19:17 /dev/loop3
brw------- 1 0 0 7, 4 Jan 9 19:17 /dev/loop4
brw------- 1 0 0 7, 5 Jan 9 19:17 /dev/loop5
brw------- 1 0 0 7, 6 Jan 9 19:17 /dev/loop6
brw------- 1 0 0 7, 7 Jan 9 19:17 /dev/loop7
Click to expand...
Click to collapse
Fast internal storage and ext4 partion is the fundamental solution.
loopback device In some respects have an advantage.
I dont dispute the performance gain... but at a risk. Everyone should be aware of this and accept the risk... If you do then thats fine...
I guess I'm more conservative when it comes to my data.
Chenglu said:
Fast internal storage and ext4 partion is the fundamental solution.
loopback device In some respects have an advantage.
Click to expand...
Click to collapse
rcgabriel said:
Hi Chenglu, I've actually already tried to modify your original data2loop script to use ext4 and run it with a kernel with ext4 built in. It actually benchmarks great on first boot, somewhat better than the original ext2 data2loop version, but the tablet won't boot again, it crashes sometime during boot and I have to wipe data and restart.
Not sure if the sync,commit=5 options will make a difference - maybe I'll give that a try and see if it helps...
EDIT: No, it still pukes out on reboot, those options don't make a difference. I've attached my inandop.sh file here. If you diff this with yours, there are only a few changes, and I'm just not sure why it doesn't work. Any ideas?
Click to expand...
Click to collapse
your busybox support ext4?
Chenglu said:
your busybox support ext4?
Click to expand...
Click to collapse
good point, that was a mistake. I am now using a statically compiled version of mkfs.ext4 that seems to work. Mount doesn't need explicit ext4 support in busybox, should just work. And I think I'm using a version of fsck that supports ext4.
EDIT: Okay, I'm using mkfs.ext4 which I've tested from the command line and it is clearly making a real ext4 filesystem. Also using a version of es2fsck that ought to work with ext4. These are both from the Desire forums, but seem to be generic ARM binaries so they seem to run on our G Tablet.
Still same result - works on first boot, not thereafter.
Maybe I need to use a version of busybox that explicitly supports ext4? Trying that next.
BTW, I got the binaries I'm using from the data2ext.zip file here: http://forum.xda-developers.com/showthread.php?t=859419
Also - ownhere's script looks pretty badass. We should consider using something based on that.
EDIT2: I am using busybox, mkfs.ext4 and e2fsck from the Desire forums, so it should support ext4 fully. Nonetheless, the exact same screen flicker followed by screen shutting off occurs with this. Attached is my updated inandop.sh. This is just baffling.
rcgabriel said:
good point, that was a mistake. I am now using a statically compiled version of mkfs.ext4 that seems to work. Mount doesn't need explicit ext4 support in busybox, should just work. And I think I'm using a version of fsck that supports ext4.
EDIT: Okay, I'm using mkfs.ext4 which I've tested from the command line and it is clearly making a real ext4 filesystem. Also using a version of es2fsck that ought to work with ext4. These are both from the Desire forums, but seem to be generic ARM binaries so they seem to run on our G Tablet.
Still same result - works on first boot, not thereafter.
Maybe I need to use a version of busybox that explicitly supports ext4? Trying that next.
BTW, I got the binaries I'm using from the data2ext.zip file here: http://forum.xda-developers.com/showthread.php?t=859419
Also - ownhere's script looks pretty badass. We should consider using something based on that.
EDIT2: I am using busybox, mkfs.ext4 and e2fsck from the Desire forums, so it should support ext4 fully. Nonetheless, the exact same screen flicker followed by screen shutting off occurs with this. Attached is my updated inandop.sh. This is just baffling.
Click to expand...
Click to collapse
I'm working on this as well...
Took a look at your script. It looks like you've put everything (including busybox) into /system/bin instead of /system/xbin? Your environment variable for busybox shows /system/bin...
Just wanted to confirm...
rcgabriel said:
EDIT2: I am using busybox, mkfs.ext4 and e2fsck from the Desire forums, so it should support ext4 fully. Nonetheless, the exact same screen flicker followed by screen shutting off occurs with this. Attached is my updated inandop.sh. This is just baffling.
Click to expand...
Click to collapse
I'm unable to get the loop file to mount as ext4 with ADB after it fails...
I'm not sure if/why it actually mounted in the first place, but I'm thinking this is a kernel issue. Are you positive that your kernel supports ext4? Also, I'm thinking ext4 might need to be compiled into the kernel instead of a module.
I could be wrong, though....
Also check which mount binary you are using. Busybox has one, but there is also a "mount" sometimes linked to the "toolbox" binary in /system/bin.
Ok so I (sort of) got it working.
After getting a kernel that is known working with ext4, the system was able to mount the partition again. I was getting the vegan "loop", so I went in with ADB and saw that the partition was mounted but all of the files were gone.
I then booted into CW and mounted USB, and at the same time on my PC I extracted my /data/data folder from a recent clockwork backup and copied it to /sdcard. I then unmounted USB and mounted /system and /sdcard from CW. Then from ADB I copied the data folder over to /mnt/asec/extdata and fixed the perms. I created empty folders for app-private and anr because they were empty on my backup (other than a traces.txt file in anr).
After bouncing the tab it booted up, but some of my settings were blown away. No big deal. Quadrant crashes at the I/O test part, but it might be because I don't have an Internet connection. The wifi is broken with the kernel I'm using.
Let me know if you still can't get things mounted. I'll test this more tomorrow when I get a fixed kernel.
I'm going to start working on the alternate approach of adding a 3rd partition...
anlog said:
Ok so I (sort of) got it working.
After getting a kernel that is known working with ext4, the system was able to mount the partition again. I was getting the vegan "loop", so I went in with ADB and saw that the partition was mounted but all of the files were gone.
I then booted into CW and mounted USB, and at the same time on my PC I extracted my /data/data folder from a recent clockwork backup and copied it to /sdcard. I then unmounted USB and mounted /system and /sdcard from CW. Then from ADB I copied the data folder over to /mnt/asec/extdata and fixed the perms. I created empty folders for app-private and anr because they were empty on my backup (other than a traces.txt file in anr).
After bouncing the tab it booted up, but some of my settings were blown away. No big deal. Quadrant crashes at the I/O test part, but it might be because I don't have an Internet connection. The wifi is broken with the kernel I'm using.
Let me know if you still can't get things mounted. I'll test this more tomorrow when I get a fixed kernel.
I'm going to start working on the alternate approach of adding a 3rd partition...
Click to expand...
Click to collapse
The kernel should support ext4, I built it myself with ext4 enabled in the config file. And yeah, I put the busybox executable in /system/bin so it wouldn't conflict with the one in /system/xbin that Vegan already has. I also dumped mkfs.ext4 in /system/bin.
What I realized is that busybox has a nasty habit of failing partially at doing things - I keep assuming that it's exactly like the stock Linux command line tools, and it's not always identical. I ended up tearing out the important stuff and running it as a standalone test script from the command line to see what was happening.
Mkfs.ext4 runs with no obvious issues (I see it creates a journal at the end, so I know it's creating an ext4 filesystem now).
But then I got an error:
Code:
mount: mounting /dev/loop0 on /mnt/asec/extdata failed: Invalid argument
followed by:
Code:
umount: can't umount /mnt/asec/extdata: Invalid argument
e2fsck 1.41.6 (30-May-2009)
ext2fs_check_if_mount: Can't check if filesystem is mounted due to missing mtab file while determining whether /data/ext4 is mounted.
/system/bin/e2fsck: Superblock invalid, trying backup blocks...
/system/bin/e2fsck: Bad magic number in super-block while trying to open /data/ext4
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>
mount: mounting /dev/loop0 on /mnt/asec/extdata failed: Invalid argument
So mount failed to mount the file device that was created - that would seem to be a big issue. And then e2fsck failed to fsck it that one I'm baffled by.
I don't really understand how this "partially works" when it runs from inandop.sh but seems to fail entirely when I run it from the command line, but I sense that it "works once" because something it's getting sometimes written as ext4 sometimes as ext2/3 and that's leading obviously to corruption. Will figure more out later when I have time. I may just try adapting ownhere's script directly, he's obviously put a ton of thought into filesystem stuff and I'm not an expert in that area at all.
rcgabriel said:
The kernel should support ext4, I built it myself with ext4 enabled in the config file. And yeah, I put the busybox executable in /system/bin so it wouldn't conflict with the one in /system/xbin that Vegan already has. I also dumped mkfs.ext4 in /system/bin.
What I realized is that busybox has a nasty habit of failing partially at doing things - I keep assuming that it's exactly like the stock Linux command line tools, and it's not always identical. I ended up tearing out the important stuff and running it as a standalone test script from the command line to see what was happening.
Mkfs.ext4 runs with no obvious issues (I see it creates a journal at the end, so I know it's creating an ext4 filesystem now).
But then I got an error:
Code:
mount: mounting /dev/loop0 on /mnt/asec/extdata failed: Invalid argument
followed by:
Code:
umount: can't umount /mnt/asec/extdata: Invalid argument
e2fsck 1.41.6 (30-May-2009)
ext2fs_check_if_mount: Can't check if filesystem is mounted due to missing mtab file while determining whether /data/ext4 is mounted.
/system/bin/e2fsck: Superblock invalid, trying backup blocks...
/system/bin/e2fsck: Bad magic number in super-block while trying to open /data/ext4
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>
mount: mounting /dev/loop0 on /mnt/asec/extdata failed: Invalid argument
So mount failed to mount the file device that was created - that would seem to be a big issue. And then e2fsck failed to fsck it that one I'm baffled by.
I don't really understand how this "partially works" when it runs from inandop.sh but seems to fail entirely when I run it from the command line, but I sense that it "works once" because something it's getting sometimes written as ext4 sometimes as ext2/3 and that's leading obviously to corruption. Will figure more out later when I have time. I may just try adapting ownhere's script directly, he's obviously put a ton of thought into filesystem stuff and I'm not an expert in that area at all.
Click to expand...
Click to collapse
I was able to reboot 5 times and it kept the settings for me. I just couldnt test all apps because wifi was broken with the kernel I was using. I can test more today.
Are you sure that your ext4 format is completing? I got an mtab error when first trying to create the journal, so I just changed the script to format it with the -O ^has_journal option and it competed.
Vegan runs fine for me with latest busybox...
modify init.rc for mount ext4 /data
you must have tune2fs mkfs.ext4 e2fsck binary file.
Code:
#!/system/bin/sh
##get highest priority
/system/bin/renice -20 -r -g $$
ECHO_TARGET=/misc/inandop.log
BUSYBOX="/system/bin/busybox"
#data2loop by xiaolu
echo "try data2loop" >> $ECHO_TARGET
if [ "`$BUSYBOX df /dev/loop0 | grep loop`" != "" } ; then
exit 0
fi
$BUSYBOX ln -s /dev/block/loop0 /dev/loop0
$BUSYBOX ln -s /dev/block/loop1 /dev/loop1
$BUSYBOX ln -s /dev/block/loop2 /dev/loop2
$BUSYBOX ln -s /dev/block/loop3 /dev/loop3
$BUSYBOX ln -s /dev/block/loop4 /dev/loop4
$BUSYBOX ln -s /dev/block/loop5 /dev/loop5
$BUSYBOX ln -s /dev/block/loop6 /dev/loop6
$BUSYBOX ln -s /dev/block/loop7 /dev/loop7
if [ ! -e /data/system.firstrun.finish ];
then
# first run data not create do nothing, data2loop after reboot
#/system/bin/mkfs.ext4 -b 4096 -m 0 -F -L userdata /dev/block/mmcblk3p2
#/system/bin/tune2fs -o journal_data_writeback /dev/block/mmcblk3p2
#/system/bin/e2fsck /dev/block/mmcblk3p2
#/system/bin/tune2fs -O ^has_journal /dev/block/mmcblk3p2
$BUSYBOX mkdir /data/anr
$BUSYBOX touch /data/system.firstrun.finish
exit 0;
fi
$BUSYBOX umount /cache
echo "0" > /data/misc/screen_lock_status
$BUSYBOX chown 1000.1000 /data/misc/screen_lock_status
$BUSYBOX chmod 644 /data/misc/screen_lock_status
$BUSYBOX mkdir /mnt/asec/extdata
/system/bin/tune2fs -o journal_data_writeback /dev/block/mmcblk3p2
$BUSYBOX mount -t ext4 -o remount,barrier=0,nobh,nouser_xattr,errors=continue,noatime,nodiratime,nosuid,nodev /dev/block/mmcblk3p2 /data
result=$?
echo "mount mmcblk3p2:$result" >> $ECHO_TARGET
$BUSYBOX chown 1000.1000 /data
$BUSYBOX chmod 771 /data
echo "+++Need create loopback device for data, please wait... " >> $ECHO_TARGET
if [ ! -e /data/data2loop.finish ];
then
if [ -e /dev/block/mmcblk3p3 ];
then
echo "+++Found mmcblk3p3, will use it for /data/data, create ext4 fs on it now..." >> $ECHO_TARGET
/system/bin/mkfs.ext4 -b 4096 -m 0 -F -L extdata /dev/block/mmcblk3p3
/system/bin/tune2fs -o journal_data_ordered /dev/block/mmcblk3p3
/system/bin/e2fsck -y -v -f /dev/block/mmcblk3p3
#/system/bin/tune2fs -O has_journal /dev/block/mmcblk3p3
/system/bin/tune2fs -O ^has_journal /dev/block/mmcblk3p3
$BUSYBOX mount -t ext4 -o loop,commit=5,barrier=1,nouser_xattr,errors=continue,noatime,nodiratime,nosuid,nodev /dev/block/mmcblk3p3 /mnt/asec/extdata
result=$?
echo "mount /dev/block/mmcblk3p3:$result" >> $ECHO_TARGET
else
echo "+++Need create 512M ext2 loopback device for data, please wait... " >> $ECHO_TARGET
$BUSYBOX dd if=/dev/zero of=/data/ext2 bs=1048576 count=512
$BUSYBOX mke2fs -m 0 -F -L datadata /data/ext2
echo "+++Loopback device create done... " >> $ECHO_TARGET
$BUSYBOX mount -o loop,errors=continue,noatime,nodiratime,nosuid,nodev /data/ext2 /mnt/asec/extdata
fi
$BUSYBOX chown 1000.1000 /mnt/asec/extdata
$BUSYBOX chmod 771 /mnt/asec/extdata
for i in data app-private anr ; do
if [ ! -d /mnt/asec/extdata/$i ] ; then
$BUSYBOX mkdir /mnt/asec/extdata/$i;
fi
$BUSYBOX chown 1000.1000 /mnt/asec/extdata/$i;
$BUSYBOX chmod 771 /mnt/asec/extdata/$i;
#if [ ! -h /data/$i ] ; then
$BUSYBOX cp -a /data/$i /mnt/asec/extdata/;
$BUSYBOX rm -rf /data/$i;
$BUSYBOX ln -s /mnt/asec/extdata/$i /data/$i;
result=$?
echo "ln -s:$result" >> $ECHO_TARGET
#fi
done
$BUSYBOX umount /mnt/asec/extdata
$BUSYBOX touch /data/data2loop.finish
fi
if [ -e /dev/block/mmcblk3p3 ];
then
/system/bin/e2fsck -y -v -f /dev/block/mmcblk3p3
#/system/bin/tune2fs -O ^has_journal /dev/block/mmcblk3p3
/system/bin/tune2fs -o journal_data_writeback /dev/block/mmcblk3p3
$BUSYBOX mknod /dev/loop0 b 7 0
$BUSYBOX losetup /dev/loop0 /dev/block/mmcblk3p3
#$BUSYBOX mount -t ext4 -o sync,commit=5,barrier=1,nouser_xattr,errors=continue,noatime,nodiratime,nosuid,nodev /dev/loop0 /mnt/asec/extdata
$BUSYBOX mount -t ext4 -o barrier=1,nouser_xattr,errors=continue,noatime,nodiratime,nosuid,nodev /dev/loop0 /mnt/asec/extdata
result=$?
echo "mount /dev/loop1:$result" >> $ECHO_TARGET
else
/system/bin/e2fsck -y -v -f /data/ext2
$BUSYBOX mount -o loop,errors=continue,noatime,nodiratime,nosuid,nodev /data/ext2 /mnt/asec/extdata
fi
$BUSYBOX chown 1000.1000 /mnt/asec/extdata
$BUSYBOX chmod 771 /mnt/asec/extdata
$BUSYBOX mkdir /data/cache
$BUSYBOX mount -o bind /data/cache /cache
$BUSYBOX chmod 777 /cache
sync;
exit 0;
Code:
rootfs / rootfs rw,relatime 0 0
tmpfs /dev tmpfs rw,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
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
/dev/block/mtdblock3 /system yaffs2 ro,relatime 0 0
/dev/block/mtdblock6 /logodata yaffs2 rw,nosuid,nodev,relatime 0 0
/dev/block/mmcblk3p2 /data ext4 rw,nosuid,nodev,noatime,nodiratime,barrier=0,nobh,data=writeback 0 0
/dev/block/mtdblock0 /misc yaffs2 rw,nosuid,nodev,relatime 0 0
/dev/loop0 /mnt/asec/extdata ext4 rw,nosuid,nodev,noatime,nodiratime,barrier=0,data=writeback 0 0
/dev/block/mmcblk3p2 /cache ext4 rw,nosuid,nodev,noatime,nodiratime,barrier=0,nobh,data=writeback 0 0
/dev/block/vold/179:17 /mnt/sdcard2 vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=07
02,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,relatime,uid=1000,gid=1015,fmask=0702,dmas
k=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
tmpfs /mnt/sdcard2/.android_secure tmpfs ro,relatime,size=0k,mode=000 0 0
/dev/block/vold/179:25 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=070
2,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/block/vold/179:25 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmas
k=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
tmpfs /mnt/sdcard/.android_secure tmpfs ro,relatime,size=0k,mode=000 0 0
chenglu can you post the instructions on how to create a third partition and mount that instead of creating a loop file? I want to test that today.
Thanks,
anlog said:
chenglu can you post the instructions on how to create a third partition and mount that instead of creating a loop file? I want to test that today.
Thanks,
Click to expand...
Click to collapse
Code:
busybox fdisk /dev/block/mmcblk3 -l
Disk /dev/block/mmcblk3: 16.0 GB, 16097738752 bytes
4 heads, 16 sectors/track, 491264 cylinders
Units = cylinders of 64 * 512 = 32768 bytes
Device Boot Start End Blocks Id System
/dev/block/mmcblk3p1 1 397087 12706776 83 Linux
/dev/block/mmcblk3p2 397088 458497 1965120 83 Linux
/dev/block/mmcblk3p3 458498 491264 1048544 83 Linux
reboot into recovery mode
Code:
busybox fdisk /dev/block/mmcblk3
The number of cylinders for this disk is set to 491264.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): m
m
Command Action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
"d" delete a partition 1 and 2
"n" create primary partition 1 2 3
busybox mkdosfs /dev/block/mmcblk3p1
mkfs.ext4 -b 4096 -m 0 -F -L userdata /dev/block/mmcblk3p2
In your instructions it looks like partition 3 isn't referenced, but instead you're formatting /data as ext4 instead of ext3? Or am I missing something???
Add the -O ^huge_file file option to your mkfs.ext4 when formating the partition. (it won't work with this feature since it requires special kernel option that brakes compatibility with existing modules)
mkfs.ext4 -O ^huge_file ........
Report back...
anlog said:
I was able to reboot 5 times and it kept the settings for me. I just couldnt test all apps because wifi was broken with the kernel I was using. I can test more today.
Are you sure that your ext4 format is completing? I got an mtab error when first trying to create the journal, so I just changed the script to format it with the -O ^has_journal option and it competed.
Vegan runs fine for me with latest busybox...
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1028464
Anyone tried to do that on our SGS2?
I've did this already on my Hero and on my Desire... I have no time right now, but I will try to get it running.
I'm sure it will be super fast...
Edit:
http://galaxytabhacks.com/galaxy-ta...tall-ubuntu-linux-on-galaxy-tab-10-1-tabuntu/
They already did it on the Galaxy Tab. It's time to get it running on the SGS2!
Tried it and the LXDE image is working... very fast.
I can open the file manager and everything expect the Browser... also installed firefox but couldn't run it! I get the error:
Xlib: extension “RANDR” missing on display “:1.0″.
I think this has something to do with VNC... will try to reinstall tightvnc and see if it helps.
I'm surprised that nobody is interested in this...
I'd look at it at some point, other than the fact O2 cannot organise themselves to send out my SGS2.
I think a lot of people are still waiting on phones to arrive...
pulser_g2 said:
I'd look at it at some point, other than the fact O2 cannot organise themselves to send out my SGS2.
I think a lot of people are still waiting on phones to arrive...
Click to expand...
Click to collapse
pulser_g2, I think it's time to get that chroot working! I've tried again with another build with no luck. I think we need a special kernel... back when I had my desire I remember that it worked only with very few custom kernels.. because they had some parameter enabled but I can't remember which!
Under this link you can see people did the same on the Galaxy Tab 10.1:
http://galaxytabhacks.com/galaxy-ta...tall-ubuntu-linux-on-galaxy-tab-10-1-tabuntu/
On our SGS2 it would be epic... when we get it working we can just connect via VNC from our desktops to our SGS2 and use it as a PC!! Or via the viewer on the SGS2 itself... screen is big enough.
I hope someone can move this thread to the DEV forum so we can start working on it.
I started to work on running Ubuntu 11.04 on the SGSII yesterday, from scratch as I didn't find an existing way to do it. As I may need some kernel modules, I'm creating a virtualbox environment to cross-compile them.
I managed to run Ubuntu some time ago on my Xperia X10 so I already have some background on the subject so it might not take months to have it working.
I got debian running in chroot and managed to get xfce going. Not real useful at the moment but at least it works.
I just had to root the phone and followed the guide at saurik.com
Sent from my GT-I9100 using XDA App
Just got Ubuntu 10 running on my S2, loop device and ext4 is supported by the default kernel !
Hmm, strange... do you have root? I'm on VillainROM 1.4 with latest CF-ROOT and it doesn't work exactly because of loop devices!
d3sm0nd said:
Hmm, strange... do you have root? I'm on VillainROM 1.4 with latest CF-ROOT and it doesn't work exactly because of loop devices!
Click to expand...
Click to collapse
I'm using an insecure kernel with default firmware.
For loop device, you need to 'losetup /dev/block/loop0 /path_to_image' and not using /dev/loop0 (returned by default by losetup but this is wrong)
and after that 'mount -t ext4 /dev/block/loop0 /my_mount_dir'
ext4 is supporting ext2/ext3 too
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Still won't work. Here the script i'm using:
#modprobe ext4
mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system
export kit=/sdcard/ubuntu
export bin=/system/bin
if [ ! -d /data/local/ubuntu ]
then
mkdir /data/local/ubuntu
fi
export mnt=/data/local/ubuntu
export PATH=$bin:/usr/bin:/usr/sbin:/bin:$PATH
export TERM=linux
export HOME=/root
mknod /dev/block/loop0 b 7 0
losetup /dev/block/loop0 /sdcard/ubuntu/ubuntu.img
mount -t ext4 /dev/block/loop0 /data/local/ubuntu
#mount -o loop,noatime -t ext4 $kit/ubuntu.img $mnt
mount -t devpts devpts $mnt/dev/pts
mount -t proc proc $mnt/proc
mount -t sysfs sysfs $mnt/sys
sysctl -w net.ipv4.ip_forward=1
echo "Setting /etc/resolv.conf to Google Open DNS 8.8.8.8 and 8.8.4.4"
echo "nameserver 8.8.8.8" > $mnt/etc/resolv.conf
echo "nameserver 8.8.4.4" >> $mnt/etc/resolv.conf
echo "Setting localhost on /etc/hosts "
echo "127.0.0.1 localhost" > $mnt/etc/hosts
echo "READY TO ROCK AND ROLL BABY! "
echo "Brought to you by NexusOneHacks.net and the open source community! "
echo " "
chroot $mnt /bin/bash
#After exit command is executed clear it all up
echo " "
echo "Shutting down Ubuntu"
umount $mnt/dev/pts
umount $mnt/proc
umount $mnt/sys
umount $mnt
losetup -d /dev/block/loop0
Click to expand...
Click to collapse
Sent from my GT-I9100 using XDA App
My self Debian image is working fine, this is the script I'm using
Code:
#!/system/bin/sh
mnt=/mnt/sdcard/debian/mountpoint
img=/mnt/sdcard/debian/debian.img
export PATH="$PATH":/usr/bin:/usr/sbin:/bin
export TERM=linux
export HOME=/root
export USER=root
export LC_ALL=C
[ -e "$mnt"/bin/bash ] || busybox mount $img "$mnt"
busybox mount -t proc proc "$mnt"/proc
busybox mount -t sysfs sysfs "$mnt"/sys
busybox mount -t devpts devpts "$mnt"/dev/pts
busybox mount -o bind /data "$mnt"/data
busybox mount -o bind /sdcard "$mnt"/sdcard
echo ""
echo " Debian GNU/Linux"
echo ""
busybox chroot "$mnt" /bin/bash
echo ""
echo "Dismounting..."
echo ""
busybox umount "$mnt"/sdcard
busybox umount "$mnt"/data
busybox umount "$mnt"/dev/pts
busybox umount "$mnt"/proc
busybox umount "$mnt"/sys
echo -e "Dismount debian.img [y/N]? \\c"
read fi;
[ "$fi" = "y" ] && busybox umount "$mnt"
h t t p://img13.imageshack.us/img13/2932/sgs2debian.png
d3sm0nd said:
Still won't work. Here the script i'm using:
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
I'm running as root ("su") so I can access /dev without trouble.
mknod is useless in your script, as loop device is already created.
The script I'm using (ugly as hell bot no time to optimize it) :
Code:
mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system
export kit=/sdcard/ubuntu
export bin=/system/bin
export mnt=/data/local/mnt
export PATH=$bin:/usr/bin:/usr/sbin:/bin:$PATH
export TERM=linux
export HOME=/root
mkdir $mnt
losetup /dev/block/loop0 /sdcard/ubuntu/ubuntu.img
mount -t ext4 /dev/block/loop0 /data/local/mnt
mount -t devpts devpts $mnt/dev/pts
mount -t proc proc $mnt/proc
mount -t sysfs sysfs $mnt/sys
sysctl -w net.ipv4.ip_forward=1
echo "Setting /etc/resolv.conf to Google Open DNS 8.8.8.8 and 8.8.4.4"
echo "nameserver 8.8.8.8" > $mnt/etc/resolv.conf
echo "nameserver 8.8.4.4" >> $mnt/etc/resolv.conf
echo "Setting localhost on /etc/hosts "
echo "127.0.0.1 localhost" > $mnt/etc/hosts
echo "READY TO ROCK AND ROLL BABY! "
echo " "
chroot $mnt /bin/bash
Still won't work, mate
I also type su and I have root...
bootubuntu
mkdir failed for /data/local/mnt, File exists
losetup: /dev/block/loop0
Toolbox!
Toolbox!
Toolbox!
Toolbox!
net.ipv4.ip_forward = 1
Setting /etc/resolv.conf to Google Open DNS 8.8.8.8 and 8.8.4.4
bootubuntu: cannot create /data/local/mnt/etc/resolv.conf: directory nonexistent
bootubuntu: cannot create /data/local/mnt/etc/resolv.conf: directory nonexistent
Setting localhost on /etc/hosts
bootubuntu: cannot create /data/local/mnt/etc/hosts: directory nonexistent
READY TO ROCK AND ROLL BABY!
chroot: can't execute '/bin/bash': No such file or directory
Click to expand...
Click to collapse
Which ROM are you using? And do you have CF-ROOT kernel?
athurh said:
My self Debian image is working fine, this is the script I'm using
Code:
#!/system/bin/sh
mnt=/mnt/sdcard/debian/mountpoint
img=/mnt/sdcard/debian/debian.img
export PATH="$PATH":/usr/bin:/usr/sbin:/bin
export TERM=linux
export HOME=/root
export USER=root
export LC_ALL=C
[ -e "$mnt"/bin/bash ] || busybox mount $img "$mnt"
busybox mount -t proc proc "$mnt"/proc
busybox mount -t sysfs sysfs "$mnt"/sys
busybox mount -t devpts devpts "$mnt"/dev/pts
busybox mount -o bind /data "$mnt"/data
busybox mount -o bind /sdcard "$mnt"/sdcard
echo ""
echo " Debian GNU/Linux"
echo ""
busybox chroot "$mnt" /bin/bash
echo ""
echo "Dismounting..."
echo ""
busybox umount "$mnt"/sdcard
busybox umount "$mnt"/data
busybox umount "$mnt"/dev/pts
busybox umount "$mnt"/proc
busybox umount "$mnt"/sys
echo -e "Dismount debian.img [y/N]? \\c"
read fi;
[ "$fi" = "y" ] && busybox umount "$mnt"
h t t p://img13.imageshack.us/img13/2932/sgs2debian.png
Click to expand...
Click to collapse
Can you upload or give me a link of your image? Thanks very much
I'm using the image from here:
http://galaxytabhacks.com/galaxy-ta...tall-ubuntu-linux-on-galaxy-tab-10-1-tabuntu/
Maybe it's because of the image..
Sent from my GT-I9100 using XDA App
d3sm0nd said:
I'm using the image from here:
http://galaxytabhacks.com/galaxy-ta...tall-ubuntu-linux-on-galaxy-tab-10-1-tabuntu/
Maybe it's because of the image..
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
type :
losetup /dev/block/loop0 /sdcard/ubuntu/ubuntu.img
mount -t ext4 /dev/block/loop0 /data/local/mnt
(replace ubuntu.img and /data/local/mnt with your current image/dir)
if '/data/local/mnt' is empty then your image is broken.
Also type 'dmesg' to check why it's broken.
extract zip to sdcard
run 'sh /sdcard/debian/install.sh' to copy the script to /system/xbin
'debianboot' to enter chroot
the prompt will change to debian if everything goes well
type 'alias' to see some shortcuts
'startvnc' starts vncserver
host: localhost
password: debian
port: 5901
http://www.multiupload.com/9R1AKKTR6D
debian-SGS2.zip
md5 c63c7953dab56c375f6748baecc2915c
Using the HD2 port as basis, I got Ubuntu 11.04 running on our Galaxy SII :
Some applications don't run in the menus but most of them are ok (Firefox 5 at first!).
As Unity requires hardware acceleration, I was unable to enable it for now.
As usual VNC is needed, so it's not very smooth to use, but it seems to me that 11.04 is smoother than 10.10 on my device.
alx5962 said:
Using the HD2 port as basis, I got Ubuntu 11.04 running on our Galaxy SII :
Some applications don't run in the menus but most of them are ok (Firefox 5 at first!).
As Unity requires hardware acceleration, I was unable to enable it for now.
As usual VNC is needed, so it's not very smooth to use, but it seems to me that 11.04 is smoother than 10.10 on my device.
Click to expand...
Click to collapse
Could you please upload the image somewhere?
hey guys me and anantshri got BT5 running on SGS2!!!
check it out here:
[DEV] BACKTRACK 5 on SGS2 {chroot}