Eliminate /datadata partition - Android Q&A, Help & Troubleshooting

Hey all:
Is it possible to eliminate the symlink to /datadata and force the cache and .XML files to use the /data partition before or after build?
I see that /datadata is described in the update file during the build process, but there's no size listed or anything of the sort, just the entry.
Trying to eliminate having to use an app to move cache files to a rather slow external sd card.
Sent from my thumb magnet

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[Q] Clockworkmod and sd-ext

Just installed link2sd earlier (formatted partition as ext3). Wanted to flash a different rom. Trying to backup my phone, and clockworkmod tells me it can't mount sd-ext. Anyone know a reason and/or work around?
I think CWM works only with ext4 partition AFAIK. So, you can re-partition your sd card to a ext4 partition using CWM, or you can format the ext partition only to ext4 using a computer.
YouArePoop said:
Just installed link2sd earlier (formatted partition as ext3). Wanted to flash a different rom. Trying to backup my phone, and clockworkmod tells me it can't mount sd-ext. Anyone know a reason and/or work around?
Click to expand...
Click to collapse
which version of CWM have you got?
3.0.2.4, which I've used for a while now, always tries to back up my 6GB ext2 debian partition unless I remember to change cards first. no way I leave room in the vfat partition to back up that much data.
I'll put it up on 4shared if you want it.
mihir287 said:
I think CWM works only with ext4 partition AFAIK. So, you can re-partition your sd card to a ext4 partition using CWM, or you can format the ext partition only to ext4 using a computer.
Click to expand...
Click to collapse
Guess when I get home I'll copy the contents to computer, reformat, and copy back. Hopefully link2sd will notice the formatting has changed and reset itself
Sent from my LG-VM670 using XDA App
Doesn't work with extra either. Version 3.2.0.1 I believe it was.
Guess it doesn't really matter, can just use titanium since its all app stuff on there anyways...
Sent from my LG-VM670 using XDA App
i use CWM to back up my 512MB ext2 partition for my data2ext all the time (with the rest of the backup) and it seems to have no problem, and just to check i just mounted the partition in mounts and storage and it mounts fine. I know some recoveries ive used in the past on other phones would have problems with partitions that were not in 64-128-256-512-1024 MB, etc. format because of block size issue errors that i would get (when mounting or trying to set block size to 4096). I also found that when partitoning/formatting to ext2/3/4 some programs do not properly write the drive formatting and certain systems/recoveries/apps could not properly read them on the android. the best most consistent (android friendly) formats that i have gotten to date were in ubuntu (or any other) linux using "gparted". It seemed to always be the best and usually better than the format done by the phone recovery. Hope this helps. Sorry to drone on and on.
Partitioned originally with gparted. Have since resized to be 2048, and set its label to 'sd-ext'. Now instead of getting an error saying sd-ext might not be supported on my device, it just gives me a generic 'error mounting sd-ext'
I've had ext partition mounting problems before, I'm not sure if the cause is something to do with vold or what, but
after unmounting a sd card to exchange it with another one, it changes the device partitions in /dev/block like
/dev/block/mmcblk1p2
for the sd-ext partition instead of the normal
/dev/block/mmcblk0p2
you can see if this has happened by
Code:
ls /dev/block
in adb shell.
to mount it manually, if the numbering is off,
Code:
mount /dev/block/mmcblk1p2 /sd-ext
I've only had this happen with android running, but it might work in recovery too
Switched over to using data2ext. Mounts the 2nd partition as the /data partition instead of /sd-ext. Can manually mount 2nd as /sd-ext from within rom, but it doesn't carry over to recovery.
A possible solution... Create a symbolic link pointing /sd-ext to the 2nd partition? But then again, since /data now points to 2nd partition, is recovery picking up on that unknowingly and backing up the 2nd's contents when it thinks its backing up the normal /data?
I suppose I should investigate.
Edit: Yep it does backup the 2nd partition, thankfully. Just tried to install a theme made in UOT Kitchen, it borked some stuff, and the restore worked.

[Q] Link2sd problem

Hey all I'm running CMD 7.1 (RC) on a Nexus One and I've followed the instructions to partition my sd card from here as ext3, installed link2sd, and get this error:
Mount script error
Mount script cannot be created.
mount: mounting/dev/block/
vold/179:2 on /data/sdext2
failed: Device or resource busy
Anyone have a solution for this? I have searched XDA and Google for a solution, a few posts showed up with the same problem, but the person that starts the thread with the same problem ends up not following their own thread, or finds a solution without explaining how.
I am having the exact same problem, Nexus One with CM7 nightly 214. Tried S2E but it kept screwing up and trashing my EXT partition so I wanted to try Link2SD.
Finally got it to work but I can only get EXT3 partition, tried updating using Amon-Ra and MiniTool Partition but neither updated to EXT4.
In Terminal you can check the type of EXT partition by typing: mount | grep sd-ext
Everything I tried kept giving me only an EXT2 partition, I tried converting to EXT4 using MiniTool Partition Manager which reported a successful conversion but when I checked in terminal it reported EXT2. I then used Amon-Ra recovery to convert from EXT2 to EXT3 and now Link2SD works. Lexar 32GB Class 10 SD. Hope this helps.
Possible solution
I might have just found a solution.
Do you guys use any kind of bk2sdext? (automated backup of app/data to sdext partition, which comes with some ROMs built in)
To find out, go to your build.prop file in /system and check, it's one of the last lines, if it says something like bkup2sdext.enable=1, then disable it (switch 1 to 0), save and restart.
After that either go to ClockworkMod Recovery or just unmount your SD card, in order to FORMAT the sd-ext partition again so that it doesn't contain any data (and doesn't get automatically filled back, because bkup2sdext is off now).
This way I was able to mount it finally.
I think it has something to do with the build.prop AND the sd-ext partition having some other data on it before first mounting with link2sd.
Cheers.
download titanium backup press menu select batch operation scroll down till u see move all user apps to sd(if supported) and also make sure that you have checked allow application moving(settings->applications)
I have segmentation fault all the time,donnu why

Size of /system ?

Hi everyone,
I just wondered how big the /system partition should be?
Because I wanted to install a custom keyboard with a flashable .zip, but it's not working. So I tried to put it in /system by myself, but actually, there is no space, what also should be the reason for CWN not beeing able to flash it...
My partition is 315.87mb, according to root explorer, an 0mb left. Is this the normal size? My App folder is only around 100mb... Where is the other space??
Thanks!
The /system partition size on every single Atrix out there is exactly 320 MB. There is no known way to change that. That is the raw partition size - once it is formatted to contain a filesystem, some of that will be lost, depending on the actual filesystem (ext3, ext4, ...).
Also, questions should go to Q&A.
Thanks a lot for the quick reply!
I believe there are methods to grow through linking to /osh but I have not researched. However, you already have the option to move (root explorer) other apps to /data if you need to free up space.
Sent from my MB860 using Tapatalk 2

[Q] Space on SD card

Hi!
Partitioned my 32GB sdcard, and put CM10.2 on it, but when I check it I have only about 400mb of space or something like that. I had the same amount of space on a 4GB sdcard I used before. Why am I not able to use up the rest of the GB's?! Can someone tell me how to fix it, I don't know if I'm partitioning wrong or doing something wrong, but I want to be able to have lots of extra space for music, apps, etc. Please help! Thanks!!!
I believe you used a low level utility like dd or similar to flash an image onto a partition.
You need to run fsck on that partition, then run resize2fs to expand the ext2/3/4 partition.
Let's say your partition is /dev/block/mmcblk1p1
You would do (in a terminal):
adb reboot recovery
adb shell
# umount /dev/block/mmcblk1p1
# e2fsck /dev/block/mmcblk1p1
# resize2fs /dev/block/mmcblk1p1
After that, your partition will get expanded to whatever size you made it.
It takes a while so be patient. The larger the partition, the longer it will take.
Zenile said:
Hi!
Partitioned my 32GB sdcard, and put CM10.2 on it, but when I check it I have only about 400mb of space or something like that. I had the same amount of space on a 4GB sdcard I used before. Why am I not able to use up the rest of the GB's?! Can someone tell me how to fix it, I don't know if I'm partitioning wrong or doing something wrong, but I want to be able to have lots of extra space for music, apps, etc. Please help! Thanks!!!
Click to expand...
Click to collapse
if you got a prebaked image of a bootable cm card from somewhere, then it usually has 4 partitions on it that were set to the sizes the author of the card specified.
/boot
/system
/data
/sdcard
You would need to put the card in a PC, and use a disk partitioning utility to resize the partitions
some of the images include additional flash files that you install to expand the card's partitions for you. (succulent's), but
you have to do it as you install for the first time.
I prefer to build the card empty first, and load the boot files and zips manually.
linux tools like gparted, Parted Magic , booting from a live USB or CD work pretty well.
Windows based ones like Easus Partition master, or Paragon, not so good.
Mini Tool partition wizard (windows/free) sometimes works
this looks to be a decent write up
http://www.mobileread.com/forums/showthread.php?t=202660
mikeataol said:
...
I prefer to build the card empty first, and load the boot files and zips manually.
linux tools like gparted, Parted Magic , booting from a live USB or CD work pretty well.
Windows based ones like Easus Partition master, or Paragon, not so good.
Mini Tool partition wizard (windows/free) sometimes works
this looks to be a decent write up
http://www.mobileread.com/forums/showthread.php?t=202660
Click to expand...
Click to collapse
The write-up is also posted on XDA at http://forum.xda-developers.com/showthread.php?t=2098419. It was written back in the days of CM10.1, so to use it for CM10.2 or CM11:
Obtain the boot files: MLO, u-boot.bin, and flashing_boot.img -- as well as the files boot.img and recovery.img, from the /boot partition of the pre-made SD CM image. Make sure that MLO is the first file to copy to the freshly made /boot partition.
Substitute in the appropriate ROM and Gapps zip files corresponding to the particular CM build of interest.

Space not freeing up in /data partition after converting phone apps to system apps

Hello!
Few months ago, I rooted my Sony Xperia ZR (C5502) official ROM build 10.7.A.0.222, android version 5.1.1. Yesterday I decided to uninstall all the bloat that came with my device (like Google Play Movies & TV, Google Play Books, Hangouts, etc). I used Titanium Backup to uninstall these system apps. After that, I got lot of free space in my /system partition (around 500 MiB). I wanted to make use of this space by moving some apps installed in phone's internal memory to this /system partition. I used Link2SD's Convert to System App so that these apps move from /data partition to /system partition (I made sure the apps I moved were really installed in phone, and not external SD card's asec).
Now what should have happened is, /system partition should fill up, and memory in /data partition should free up. However, what happened is, /system partition filled, but no memory was freed up /data partition!! I suspected if Convert To System App just made a symbolic link in /system partition, but this wasn't the case. The /data/app/<package> folders for all apps I moved, were gone. I also executed ls -l on /system/priv-app/<package>, but it didn't show up as symbolic link.
I want to know why is the space in /data partition not freeing up? Thanks!
PS: I've also used Link2SD's Integrate update into system function, for those system apps that have been updated. That did free up memory in my /data partition.
Solved
I found the problem. Couldn't find a way to delete this thread so I'll just reply what I found.
Converting user app to system app only moves their apk and lib to /system. app's data and dex still reside in /data partition only, hence the space didn't free as much as I expected. However, I cleared dalvik-cache and then when they were rebuilt/recompiled on next phone restart, I could see a lot more free space in /data partition. This shouldn't happen though since Link2SD delete the old when when I converted and new one was made on phone restart. Maybe it couldn't delete some.

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