Database Develop

[MOD] data and dalvik to SD (ext partition)

OK, I'm going to stop polluting other threads with my stuff.
This should help make sure I can keep up on the discussions and provide support for people trying to use my ZIPs and/or scripts.
NOTE: This version requires JACs kernel and init.d mods. Flash his stuff, then flash mine. All this will be integrated at some point and any other dev is welcome to integrate my stuff with theirs.
In addition to the JAC kernel, you need an ext partition on the EXTERNAL SD card. DO NOT USE ROM MANAGER TO PARTITION. You will get into a boot loop and will have to Odin back to stock. For partitioning, you may use "adb shell" in clockwork recovery, an old G1/Mytouch with Amon-Ra/Clockwork, a computer with a card reader and GPartd, Paragon, etc.. If you do it with fdisk, don't forget to format the partitions, here are some sample commands.
This will format an ext2 partition.
Code:
/system/bin/mke2fs /dev/block/mmcblk1p2
Convert from ext2 to ext3
Code:
/system/bin/tune2fs -j /dev/block/mmcblk1p2
Convert ext3 to ext4
Code:
/system/bin/tune2fs -O extents,uninit_bg,dir_index /dev/block/mmcblk1p2
fsck, any ext version. Do this when you are done converting between types.
Code:
/system/bin/e2fsck -fpDC0 /dev/block/mmcblk1p2
For all of the above, make sure the partition isn't mounted with "mount". You also have to have already flashed either this ZIP, or my e2fsprogs-ext4 ZIP for the files to be installed in /system/bin.
This version will clean up older versions that I know about. It will remove any use of the playlogos hack, and the older version of my script that JAC included in his kernel.
Quadrant - 1722. I have also not seen any lag from this change. I've tried some apps that make heavy use of the database, and so far it's performing quite well. If you do see problems, I suggest fsck on the ext partition, and perhaps formatting it, to ensure it's nice and clean.
Please note that benchmark results will vary based on a large number of factors beyond my control. Try with a clean phone, no background apps. A faster SD card will help as well. I am using an older Transcend 8GB Class 6 that I used to use on my G1. It doesn't help that the free Quadrant tests lots of stuff, not just activity on /data/data and such.
To see if it's working, open a shell and type "mount". You should see entries like this:
Code:
/dev/block/mmcblk1p2 on /sd-ext type ext4 (rw,noatime,nodiratime,barrier=1,data=ordered)
/dev/block/mmcblk1p2 on /data/dalvik-cache type ext4 (rw,noatime,nodiratime,barrier=1,data=ordered)
/dev/block/mmcblk1p2 on /data/data type ext4 (rw,noatime,nodiratime,barrier=1,data=ordered)
Added data-only ZIP and the disable/revert ZIP.
Added auto-partition ZIP to create 1GB ext3 partition automatically. Note that this will delete ALL SD contents.
Added old-style enable-dc2sd for users of the auto-partition script. Do not use for JAC kernels, use the current dc2sd instead.
Changelog:
8/9/2010: Added loopback style version, should find prior versions and remove them, copying your data from the /sd-ext partition.
v2.
Compatibility fix for JAC -6 kernel.
v1.
Added e2fsprogs w/ext4 support to the ZIP
Better integration with init.d layout
On boot fsck to ensure that the ext partition is kept clean
Automatically copy files if /data has larger directories than /sd-ext

Test versions that should fix busybox to work with the newer JAC kernels. -loop uses the loopback filesystem method (RyanZA style). The other one is for an ext partition on the external SD card.

Feel free to post direct links or links to the kernel thread.

For some reason, the convetr to ext4 command isnt working for me.
Just says "Tune2fs 1.41.6" then back at # prompt
GREAT RESOURCE - Deserves a sticky just for the conversion syntax
EDIT: Maybe not, it said mounted as an ext3 before, now it says ext4
EDIT2: SUCCESS!!!!! EXT4 gives a major boost to the Quadrant score - 1531. WAY better than the~1100 i was getting before. Stupid G1 didnt actually convert ext3 to ext4, even though it said it did. Thanks!

Not that I'm stressin over Quadrant scores, but I just dropped ~100 (previous was 1497) after flashing this. Ah well.

Hmmm, before applying this script, I was just using JAC's v5 kernel, which worked fine, but after applying the OP's script, I cant backup in Clockwork (again lol).
It doesnt seem to mount /data and /datadata, as it only backs up /system and errors out on the other two. Any idea why?
EDIT: The error is really random, Ive now had 2 successful backups, 2-3 that failed due to mount issues, and 2-3 that failed due to MD5 issues. I would like to narrow down the possibilities, and I attempted a restore to stock, rooted, and then used JAC's kernel, same issue occurs (did not use your newest script). That being said, I dont think its your script. (stumped)

When converting to ext4 it said "please run e2fsck on the filesystem"
EDIT: Ran "mount" and it shows same messages you do. So it worked

LovellKid said:
When converting to ext4 it said "please run e2fsck on the filesystem"
EDIT: Ran "mount" and it shows same messages you do. So it worked
Click to expand...
Click to collapse
It's supposed to say that. Do it.
Glad it's working for some of you. As for nandroid, no idea. I'll install jac latest and check it out. Can't think of much I could have done to it though, I can't mod the ramdisk this way.

+1 on the nandroid, I went back and tried and couldnt. Also, tried to flash anamolous deodexed ROM and wouldnt. Gave errors e: cant mount /dev/block etc and failed. Could this be related?

LovellKid said:
+1 on the nandroid, I went back and tried and couldnt. Also, tried to flash anamolous deodexed ROM and wouldnt. Gave errors e: cant mount /dev/block etc and failed. Could this be related?
Click to expand...
Click to collapse
I doubt it, my stuff doesn't run in recovery, at least I don't think it will. I've never seen it run. I'll look into it, but it sounds like the jac mod might have an issue with nandroid right now.
There was a similar issue on the g1 with cm6. I wonder if that fix will work here...

Could you also post the Just DATA, and revert scripts in this thread please
Also, what would be the proper flashing order for just data?
1. JAC init.d
2. reverse
3. Just data
Or do I have to flash init.d, apply kernel, then reboot and flash reverse then just data?

The_Chrome_Coyote said:
Could you also post the Just DATA, and revert scripts in this thread please
Also, what would be the proper flashing order for just data?
1. JAC init.d
2. reverse
3. Just data
Or do I have to flash init.d, apply kernel, then reboot and flash reverse then just data?
Click to expand...
Click to collapse
Added revert and data-only to the OP.
If you don't have any sd-ext hack installed right now:
1. JAC init.d
2. data-only ZIP
3. reboot to download mode and flash the JAC kernel
If you already have dc2sd installed:
1. Revert ZIP
2. JAC init.d ZIP
3. Data-only ZIP
4. reboot to download mode and flash the JAC kernel
If you already have the kernel and the JAC init.d:
1. Revert ZIP
2. Data-only ZIP

I am trying to revert this fix, so I can try the new hack involving a virtual EXT2 partition. I tried the revert, and I manually deleted the a2sd and dc2sd files in init.d, but it rebuilds data when I reboot. ANy ideas?

zimphishmonger said:
I am trying to revert this fix, so I can try the new hack involving a virtual EXT2 partition. I tried the revert, and I manually deleted the a2sd and dc2sd files in init.d, but it rebuilds data when I reboot. ANy ideas?
Click to expand...
Click to collapse
You likely have a script in /system/etc/init.d doing it, or you didn't clean the old playlogos stuff up.
FWIW, I'm working on a similar way of doing it, but with ext4 and a proper init script. I don't like using ext2 for this stuff, too easy to corrupt it.

Does your new loop script require an sdcard with ext 4 partition or does it use the internal sd card?

ttabbal said:
You likely have a script in /system/etc/init.d doing it, or you didn't clean the old playlogos stuff up.
FWIW, I'm working on a similar way of doing it, but with ext4 and a proper init script. I don't like using ext2 for this stuff, too easy to corrupt it.
Click to expand...
Click to collapse
Thanks for your work! I found your dc2-loop-v1 script. Will play w/ that until you come out w/ something better. Is EXT2 really that fragile in terms of corruption when it is virtualized within a journaled file system (which I believe RFS is)

frank707 said:
Does your new loop script require an sdcard with ext 4 partition or does it use the internal sd card?
Click to expand...
Click to collapse
This loop version doesn't use an ext partition. Just the loopback mount. It will copy the files from an ext partition if you have applied that hack.

zimphishmonger said:
Thanks for your work! I found your dc2-loop-v1 script. Will play w/ that until you come out w/ something better. Is EXT2 really that fragile in terms of corruption when it is virtualized within a journaled file system (which I believe RFS is)
Click to expand...
Click to collapse
Most file system journals don't help with the data just the structure. Rfs rides on vfat, so I doubt it's worth much that way.

Gave the dc2-loop script a shot, to convert from the /SD-EXT method to this new ext4 container method. It creates the container correctly, but never seems to copy everything over. All my apps act as if i've never started them up, so Data isnt getting copied over correctly.
EDIT: Tried again, the dc2-loop script def doesnt work, and I have no idea why. It looks perfect (code-wise), but for whatever reason doesnt end up working properly

can't get your loop script working. every other one i have been able to run flawlessly. i just flashed the oc kernel by jac. any further instructions or pre reqs?

Data2ext CyanogenMOD - UPDATE 26/01/11

I am not responsible for anything you do to your phone. If this goes wrong, it's not my fault. Read the whole post, and the last few pages of the thread. This will get you up to speed. Backup everything! Twice. No, I'm not joking. Do a nandroid, then do a titanium backup.
Important note! Ext4 does NOT work with ClockworkMOD 2.5.x. Nandroid backups will not work unless you upgrade to CWM 3! (data2ext4)
Greetings, earthlings! I have got a new version for you! Almost. Read this: http://forum.xda-developers.com/showpost.php?p=11931210&postcount=341
Update 26/01/2011
Ok, so someone asked about continuing support for ext2. So I will. Ain't I nice. Both scripts are updated, and should have improved performance, as well as a bugfix With both you don't need to start over, just flash the zip and you're done. Backup anyway (of course).
EXT4 version:
Yes, ext4 is slower in benchmarks. No, it doesn't have a real world impact. Not that I can see anyway. As always feedback is welcomed. I really mean that, if your phone genuinely becomes slower, let me know.
The zip is named data2ext4-V4.zip
Instructions (new users):
Ensure that mmcblk0p2 isn't mounted anywhere. You can do this by running "mount|egrep mmcblk0p2". If that returns anything, the ext partition is mounted. Unmount it using "umount directory/that/mmcblk0p2/is/mounted/to". Most often it's mounted to /sd-ext; in this case run "umount /sd-ext"
Format the ext partition to ext4:
Code:
mke2fs -m0 -b4096 /dev/block/mmcblk0p2
tune2fs -O extents,uninit_bg,dir_index /dev/block/mmcblk0p2
e2fsck -yf /dev/block/mmcblk0p2
tune2fs -o journal_data_writeback /dev/block/mmcblk0p2
tune2fs -O ^has_journal /dev/block/mmcblk0p2
Flash the attached zip and reboot to normal mode
Open up a terminal or use ADB to execute "data2ext --enable"
Reboot
Click to expand...
Click to collapse
Intructions (upgrading from ext2):
This should keep all your existing data. Back it up anyway
Disable data2ext
Upgrade to ext4 thusly:
Code:
tune2fs -O extents,uninit_bg,dir_index /dev/block/mmcblk0p2
e2fsck -yf /dev/block/mmcblk0p2
tune2fs -o journal_data_writeback /dev/block/mmcblk0p2
tune2fs -O ^has_journal /dev/block/mmcblk0p2
Flash the attached zip
Enable data2ext
Click to expand...
Click to collapse
EXT2 version:
This is rather simpler to set up, but is not as safe. It is slightly faster though
The zip is named data2ext2-v7.zip
Flash the zip
ensure /dev/block/mmcblk0p2 isn't mounted anywhere
Format the ext partition to ext2 with a 4KB block size
Code:
mke2fs -m0 -b4096 /dev/block/mmcblk0p2
Run this:
Code:
data2ext --enable
Reboot and enjoy
Click to expand...
Click to collapse
1st boot will take a while, it's copying stuff across.
Java on my PC sucks (it won't work), and I still can't sign zips. You'll live, just toggle signature verification in CWM
Semi-disclaimer:
This is my first real foray into scripting. I am still learning, so this is not as good as it could be. I release this to you to give me an incentive to make it better. I still need to look into mount options and the like, I'm sure this can go faster. Once again, I would class this as beta quality.
What is data2ext?
The phones internal memory is divided into several partitions. The 3 key ones are /system, /data and /cache. The rest we don't need to worry about too much. /system is where the ROM lives. By default it's read only (regardless of S-ON or S-OFF). All the data on our phones (apps, app data, game progress and a few other bits and bobs) is stored on /data. We have a pitiful amount of storage on /data (about 190MB), so we quickly run out when installing apps. 1 solution is to move /data/app (this is where most of the apps are stored) to a partition on your SD card (formatted to ext). But the internal memory still fills up, as anything not in /data/app stays on internal (caches, data and shizz). Other solutions have arisen, like moving dalvik-cache there to the ext partition too. But with the advent of fast SD cards it became possible to move the whole data partition to the ext partition. So people did; this means that the internal memory is barely used (aside from a few bits here and there, they're symlinked back to their original location).
Click to expand...
Click to collapse
It ain't workin'!
Ok. Get a logcat, and use pastebin to paste it here. Then we might be able to work it out, ye?
To use logcat:
Download this and extract it to a known location. Navigate to that folder, and press SHIFT while right-clicking. In the menu there should be a "Open command window here" option. Click it. Now type "adb logcat". Press CTRL+C to end the output. Right click and press mark, then click and drag over all the text and hit ENTER. It's now copied to the clipboard. CTRL+V to paste it somewhere... To debug issues with this script I need the first 5-10 seconds of the boot process.
To make life easier, I need the bit between "--START OF SCRIPT, PASTE LOGCAT FROM HERE ON!--" and "I DON'T NEED ANY MORE OF THE LOGCAT!"
Click to expand...
Click to collapse
Changelog
Version 1
initial release
Versions 2 through 4 were internal testing ones
Version 5
Fixed dalvik-cache rebuild
Made more likely to work
EXT4(v3) version initial release
EXT4 V4
Improved performance
Bugfix (unmount /sd-ext if it exists)
EXT2 V7
Improved performance
Bugfix (unmount /sd-ext if it exists)
Hereafter I shall rename these to make managing this changelog easier
Click to expand...
Click to collapse
Credits:
BlaY0
Anyone who's ever made data2ext scripts. I looked at a few
Click to expand...
Click to collapse

signd version attached
edit: removed

nooob.
but could you also make just ap2sd for ext3 ?
Sent from my Legend using Tapatalk

Noob?! Meh, s'pose I am. What can you do, eh?
http://krikun.ru/2010/10/28/app2sd-for-cyanogenmod-6-x/

TheGrammarFreak said:
Noob?! Meh, s'pose I am. What can you do, eh?
http://krikun.ru/2010/10/28/app2sd-for-cyanogenmod-6-x/
Click to expand...
Click to collapse
i tried that one but doesn't work on gingerbread cm7
OlegKrikun :
"Now cm7 exp. builds not support run start up scripts from /etc/init.d =( when is fix, I publish app2sd for cm7"
noob=== my noob wish.

I don't like to ask questions, so I try to introduce myself into those new things. But I need a confirmation if my theories are correct
1. Google's app2sd is kinda stupid. It uses the normal fat partition on your SD, correct?
2. The a2sd linked here copies all the stuff from /data/app to /sd-ext/app and remounts /data/app to /sd-ext/app
So the Phone means the App is stored on the Phone Memory but in real its stored on the sd.
Do I have to wipe everything after flashing the script. What happens to apps that are currently moved to the SD (by Google Apps2SD). Can I just copy them "to phone" again and they are inside the sd-ext then?
3. Data2ext => Speedup because everything from /data is now on the extfs on SD. Apps are also included, as they are located in /data/app so its has a2sd integrated, right?
EDIT: Damn, now I have to ask a question...
What's stored inside the dalvik-cache? I don't know much about dalvik, thats my biggest problem with android ...
Is it good to move it also to sd-ext with the a2sd script?

fabi280 said:
I don't like to ask questions, so I try to introduce myself into those new things. But I need a confirmation if my theories are correct
1. Google's app2sd is kinda stupid. It uses the normal fat partition on your SD, correct?
2. The a2sd linked here copies all the stuff from /data/app to /sd-ext/app and remounts /data/app to /sd-ext/app
So the Phone means the App is stored on the Phone Memory but in real its stored on the sd.
Do I have to wipe everything after flashing the script. What happens to apps that are currently moved to the SD (by Google Apps2SD). Can I just copy them "to phone" again and they are inside the sd-ext then?
3. Data2ext => Speedup because everything from /data is now on the extfs on SD. Apps are also included, as they are located in /data/app so its has a2sd integrated, right?
EDIT: Damn, now I have to ask a question...
What's stored inside the dalvik-cache? I don't know much about dalvik, thats my biggest problem with android ...
Is it good to move it also to sd-ext with the a2sd script?
Click to expand...
Click to collapse
1. Correct
2. No wipe needed for a2sd or this data2ext. Any app on what the phone believes to be internal memory is in fact sd-ext
3. Correct
Dalvik-cache is a shedload of dex files, quite important. The bug with re-creating it on every boot isn't major enough for me to worry about for now, as I don't think it affects anything other than the startup time. I need to investigate this, so be careful if you use this mod. My worry is that it's due to data being lost somewhere
When I used a2sd I had dalvik-cache on the sd card, but then I have a fast SD card. It can slow things down.
Anyhoo, I would like this thread to be for testing data2ext, not asking questions about a2sd. I have made this to help me learn how these things work, so feedback is welcomed. If anyone has tested this on CM6 then please let me know. And can you also post feedback about the dalvik-cache issue.
gyroing said:
i tried that one but doesn't work on gingerbread cm7
OlegKrikun :
"Now cm7 exp. builds not support run start up scripts from /etc/init.d =( when is fix, I publish app2sd for cm7"
noob=== my noob wish.
Click to expand...
Click to collapse
/system/etc/init.d is where this is run from. It works on CM7

@Grammar,
thx for your work!!! it works very good on my phone. ext2(1 gb) partition as ext3 formatted. i have the "signed" zip from exicar(thx) installs....
lwiss
quadrant: 1686
card: 8gb class 6
rom-version: CM 7 | Gingerbread, 01/03

TheGrammarFreak said:
Anyhoo, I would like this thread to be for testing data2ext, not asking questions about a2sd. I have made this to help me learn how these things work, so feedback is welcomed. If anyone has tested this on CM6 then please let me know. And can you also post feedback about the dalvik-cache issue.
Click to expand...
Click to collapse
Sorry for my Off-Topic-Questions.
I'll try it for you on CM6.
How fast has it to be? I've got a 8GB Class 6 Card, is it enough?
EDIT: Note to myself, never read an article description on amazon on a second screen while writing a reply.
It's a class 4, I looked for a Class 6 on Amazon -_-
But I'll try it anyway..

lwiss said:
@Grammar,
thx for your work!!! it works very good on my phone. ext2(1 gb) partition as ext3 formatted. i have the "signed" zip from exicar(thx) installs....
lwiss
Click to expand...
Click to collapse
What version of CM? And it's not my work, it's BlaY0's. I just made his script work on CM
fabi280 said:
Sorry for my Off-Topic-Questions.
I'll try it for you on CM6.
How fast has it to be? I've got a 8GB Class 6 Card, is it enough?
Click to expand...
Click to collapse
It's not the most off-topic I've seen. Look at the CM experimental build thread . I also have 8GB class 6. I get 1600+

Stupid question. Where to enable data2ext in cyanogenmod settings?

What version of CM?
Click to expand...
Click to collapse
from ali ba (thx)
CM 7 | Gingerbread, 01/03 (with gapps)
lwiss

FUXAS said:
Stupid question. Where to enable data2ext in cyanogenmod settings?
Click to expand...
Click to collapse
If you don't even read the first post I'm not gonna help you. If I haven't made the point clear enough:
This is in testing. There is a major bug where dalvik-cache is re-built on every reboot. This is not a good thing. I would advise that you not use this unless you know what you're doing

fabi280 said:
Sorry for my Off-Topic-Questions.
I'll try it for you on CM6.
How fast has it to be? I've got a 8GB Class 6 Card, is it enough?
EDIT: Note to myself, never read an article description on amazon on a second screen while writing a reply.
It's a class 4, I looked for a Class 6 on Amazon -_-
But I'll try it anyway..
Click to expand...
Click to collapse
Class 4 is definitely too slow, at least on CM6.
I will not provide a Quadrant Benchmark because my Phone is waaay too slow now. It really lags everywhere.
First Start:
Code:
I//system/xbin/run-parts( 59): Initiating Data2EXT...
I//system/xbin/run-parts( 59): Waiting for SD card to settle...
I//system/xbin/run-parts( 59): Executing file system check...
I//system/xbin/run-parts( 59): /dev/block/mmcblk0p2: 11/65664 files (0.0% non-contiguous), 4451/262144 blocks
I//system/xbin/run-parts( 59): Mounting /dev/block/mmcblk0p2 to /data...
I//system/xbin/run-parts( 59): EXT partition /dev/block/mmcblk0p2 mounted on /data...
I//system/xbin/run-parts( 59): First time initiation, copying files to EXT partition...
I//system/xbin/run-parts( 59): Data2EXT enabled...
I//system/xbin/run-parts( 59): Setting read-write /system overlay...
I//system/xbin/run-parts( 59): Checking for kernel aufs support...
I//system/xbin/run-parts( 59): No aufs driver present in kernel, trying to load aufs module...
I//system/xbin/run-parts( 59): Can not load aufs module, aborting...
Second start:
Code:
I//system/xbin/run-parts( 59): Initiating Data2EXT...
I//system/xbin/run-parts( 59): Waiting for SD card to settle...
I//system/xbin/run-parts( 59): Executing file system check...
I//system/xbin/run-parts( 59): /dev/block/mmcblk0p2: Entry 'CheckinService.xml' in /data/com.google.android.gsf/shared_prefs (25081) has deleted/unused inode 25583. CLEARED.
I//system/xbin/run-parts( 59): /dev/block/mmcblk0p2: Entry 'EventLogService.xml' in /data/com.google.android.gsf/shared_prefs (25081) has deleted/unused inode 25074. CLEARED.
I//system/xbin/run-parts( 59): /dev/block/mmcblk0p2: Entry 'googlesettings.db-journal' in /data/com.google.android.gsf/databases (25087) has deleted/unused inode 25564. CLEARED.
I//system/xbin/run-parts( 59): /dev/block/mmcblk0p2: 1834/65664 files (0.4% non-contiguous), 46535/262144 blocks
I//system/xbin/run-parts( 59): /dev/block/mmcblk0p2: 1834/65664 files (0.4% non-contiguous), 46535/262144 blocks
I//system/xbin/run-parts( 59): Mounting /dev/block/mmcblk0p2 to /data...
I//system/xbin/run-parts( 59): EXT partition /dev/block/mmcblk0p2 mounted on /data...
I//system/xbin/run-parts( 59): Data2EXT enabled...
I//system/xbin/run-parts( 59): Setting read-write /system overlay...
I//system/xbin/run-parts( 59): Checking for kernel aufs support...
I//system/xbin/run-parts( 59): No aufs driver present in kernel, trying to load aufs module...
I//system/xbin/run-parts( 59): Can not load aufs module, aborting...
I can send you the complete outputs for both starts (got em till the UI was visible)
EDIT: But is the Class4 Card fast enough to handle a2sd (maybe with Dalvik Cache)?

There are several factors affecting read/write speed to/from SD card not just class:
partition alignment
partition type
format options
mount options
readahead settings
etc.

Not going to try and use it yet, but I'm curious now. When using this, you're automatically having all of your apps on your sd card and the app2sd feature isn't needed anymore, right? And your phone gets a speed boost when using it?

m1schi said:
Not going to try and use it yet, but I'm curious now. When using this, you're automatically having all of your apps on your sd card and the app2sd feature isn't needed anymore, right? And your phone gets a speed boost when using it?
Click to expand...
Click to collapse
Apps on sd-ext = yes
Speed Boost, sometimes yes, sometimes its laggy as hell
Sent from my HTC Legend using XDA App

Stupid question. How do you guys get 1600+ in Quadrant on CM7?
For me Quadrant is not finishing tests due to the 3D graphics not working. But even if it'll work, I don't think I'd get so much. On CM 6.1 oc'ed to 787, I'd hardly get 1150. Is it just due to overclocking or this data2ext is speeding it up?
Sent from my Legend using XDA App

Hi all, Oleg Krikun was published app2sd and app2sd-dalvik for CM 7 01/03
I re-uploaded patch here: cm7_app2sd
and cm7_app2sd_dalvik

ktullanux said:
Hi all, Oleg Krikun was published app2sd and app2sd-dalvik for CM 7 01/03
I re-uploaded patch here: cm7_app2sd
and cm7_app2sd_dalvik
Click to expand...
Click to collapse
This has got nothing to do with this thread.

HowTo a2sd in dsixda's 2.3.3 rom

I have installed dsixda's 2.3.3 gingerbread rom and wanted to get it working with a2sd. How ever when I partitioned my sdcard using clockworkmod recovery, instead of getting more space, I started getting errors saying "Insufficient storage" even when my internal storage has 20MB free. I searched around and found out more about a2sd.
running "a2sd check" told me that it can not mount the ext partition.
a2sd partlist showed that the rom supports ext2 and ext3 but not ext4.
I don't know how to check the filesystem of a partition on android. So, I popped out the sdcard and loaded it in my gentoo laptop ( ubuntu works too).
Sure enough "mount" command showed me that the partition is ext4.
"umount /dev/mmcblk0p2 && mkfs.ext3 /dev/mmcblk0p2" reformatted the partition to ext3(if you are worried about write cycles used by the journaling on flash memory use mkfs.ext2)
when I brought it back to my n1, it still didn't work and "a2sd check" told me to "a2sd reinstall" and that actually did the trick.
PS: This probably serves better in the thread but I'm not allowed to post in the sub-forum

Why my ACE does not mount SD-EXT at boot??

Hi there,
I have a Galaxy ACE with Stock KTM Rom , CWM5 , and rooted with CFRoot b83 (b84+b84fix does not work on my KTM rom...dont know why)
I partitioned my 4Gb SD with CWM: 512 for Ext , 0 for Swap and rest for Fat32
I have even tried to format with Mini Partition Tool: Fat32 Primary and EXT2 or EXT3 Primary (4kb cluster size)
I can mount /sd-ext on recovery , even format it, etc.
But.. I have many problems with **2SD scripts, and I think that I found the reason: SD-Ext is not mounted.
I have installed Terminal Emulator, and I get this:
# mount | grep sd-ext -> nothing happens (it should show information)
# df -> /sd-ext is not shown
What can I do??
I know that Link2sd app works with Fat32 + Fat32 partitioned cards, but I need sd-ext to work , so Link2Sd is not a solution for me.
THANKS A LOT!!

You should repartition your sd-ext with cwm...it will auto partition it into ext4...dta2sd works with that...since you are using cf-root...your have a tweaks manager right?try to enable auto start dta2sd at boot...for a sd card, the one for general storage should b in FAT32, sd-ext should be in ext4 (although certaim scripts can work with other formats, but this is working better and faster, so why not?)...Hope it helps...

Ryuinferno said:
You should repartition your sd-ext with cwm...it will auto partition it into ext4...dta2sd works with that...since you are using cf-root...your have a tweaks manager right?try to enable auto start dta2sd at boot...for a sd card, the one for general storage should b in FAT32, sd-ext should be in ext4 (although certaim scripts can work with other formats, but this is working better and faster, so why not?)...Hope it helps...
Click to expand...
Click to collapse
I have tried to make the repartition with CWM , into EXT4, and I have enabled auto start dta2sd at boot ...
But sd-ext is still not there.
I think that CFRoot is not enabling init.d support on my stock Rom.
Thanks for your reply..
Any suggestion will be welcomed!!

stock rom and link2sd: can't mount ext4 partition

i have my ace running with a stock rom again since my wife is using it.
I have rooted the phone and flashed px recovery. After that, I wanted link2sd to mount the ext4 partition but whatever I try: nothing works.
when I try to mount ext 3 or ext 4 in link2sd I get this message: can't mount: no such device
when I try to mount ext2 I get this message: invalid argument
I have repartitioned and formatted both partitions already a dozen times. why can't link2sd mount this ext 4 partition?
i created the partitions using minitool partition wizard. After I placed the sd card back into my phone, I rebooted into px recovery, mount the sd-ext and formatted sd-ext, and after that, link2sd still gave the same errors.
How can I get Link2SD working?

DutchArjo said:
i have my ace running with a stock rom again since my wife is using it.
I have rooted the phone and flashed px recovery. After that, I wanted link2sd to mount the ext4 partition but whatever I try: nothing works.
when I try to mount ext 3 or ext 4 in link2sd I get this message: can't mount: no such device
when I try to mount ext2 I get this message: invalid argument
I have repartitioned and formatted both partitions already a dozen times. why can't link2sd mount this ext 4 partition?
i created the partitions using minitool partition wizard. After I placed the sd card back into my phone, I rebooted into px recovery, mount the sd-ext and formatted sd-ext, and after that, link2sd still gave the same errors.
How can I get Link2SD working?
Click to expand...
Click to collapse
I forgot that stock rom can't work with ext 4. Changing file system to ext2 worked for me and solved the problem (for now).

DutchArjo said:
I forgot that stock rom can't work with ext 4. Changing file system to ext2 worked for me and solved the problem (for now).
Click to expand...
Click to collapse
Are you sure Link2SD works well on stock rom? Because last time I checked it doesn't work well on roms without init.d support. I myself couldn't get it to work on stock rom. It crashed most of the time. Do post the result.