I have a nagging question about switching from ext3 to ext4 kernels. I flashed a rom (1.20) and than flashed the ext3 kernel and than the ext4 kernel. I want to flash and update to the rom which is ext3 only. Do I just flash a ext3 kernel on my present rom and then flash the updated rom or can I just flash the rom over the present rom which has ext4. I kind of wish I had never flashed ext4 at this point. Any and all help is greatly appreciated.
all of the roms out have ext3 so u could wipe cache and then wipe dalvik then flash the rom over it the ext4 kernel, or the ext3, like say faux updated his rom u could flash that over it and u would be fine then u would have his ext 3 kernel installed, u do know that his roms come preinstalled with the ext3 kernel rite??? its just up in the op for people if they want to use it for cyanogen mod, so when u flash his rom it will have his latest ext3 kernel already installed, and if u want the ext 4 kernel u would have to install that over it
better yet dude do u have a nandroid of an ext3 rom? restore back to that and ull be good, for future reference always well i always make a backup of the rom i like with the ext 3 kernel, i get the rom how i want it then back it up....then if i want to slap a ext4 kernel on i do then when i dont want it or have an updated version of the rom (like fauxs) ill just restore my ext3 nandroid and update the rom then make another backup of it then slap the ext4 kernel back on if i want it. basically i never backup a ext4 kernel on my rom......the only thing i backup is ext3, and when u install the updated rom over ur previous rom like lets say faux updated his rom just wipe cache and dalvik and install rom all ur apps, and everything will still be there
This is a simple .zip file you can flash on any amami, which uses a ramdisk like the combinedrootfs from Cyanogenmod 11. Your device needs to have a f2fs-compatible kernel, for example this one.
This zip is only modifying your current ramdisk. It will delete the normal fstab and add a binary, which detects if your system, data and cache partition are formatted with f2fs and create a new fstab every boot. It will also flash a twrp recovery, which is modified to work with f2fs.
Ok but... what is f2fs?
It is a new file system, which is especially designed for flash-based storages, like our phones. It will give you much better reading and writing speed.
Installation:
1. Be sure, that you have a f2fs-compatible kernel and your ramdisk's structure is similar to Cyanogenmod's one. If you are on any aosp-based rom, the ramdisk will be compatible anyway.
2. Flash the .zip file from a custom recovery
3. Reboot recovery
4. Now go to advanced wipe and you can change the file systems of system, data and cache to f2fs.
Some more information:
If you convert cache to f2fs:
->No data will be lost
If you convert data to f2fs:
->Your whole internal storage will be wiped. backup your data before you decide to do that!
If you convert system to f2fs
->You need to flash your rom again. You need to modify the updater script of your rom before that like this
OK. I formatted data with f2fs, but want to flash a new rom. What to do?
You need to flash a kernel with f2fs and this zip, no need for any wipes
Download:
http://www.androidfilehost.com/?fid=23578570567713678
For Developers:
You can include this in your rom like this: https://gist.github.com/CoolDevelopment/54ede52a1e075da48151
XDA:DevDB Information
F2FS for amami, Tool/Utility for the Sony Xperia Z1 Compact
Contributors
CoolDevelopment, NovaFusion
Version Information
Status: Testing
Current Beta Version: 2.0
Beta Release Date: 2014-07-16
Created 2014-07-16
Last Updated 2014-07-16
@CoolDevelopment
So, if I corectly understand this zip will erase all data including internal storage? Am I right? But about if I use nightlies? Will I neen to flash it every time after update?
da900 said:
this zip will erase all data including internal storage?
Click to expand...
Click to collapse
It won´t erase your internal storage , I flashed and everthing is there !
pvillasuso said:
It won´t erase your internal storage , I flashed and everthing is there !
Click to expand...
Click to collapse
OK. Thanx. But will erase all data, so I need to install all apps again?
da900 said:
OK. Thanx. But will erase all data, so I need to install all apps again?
Click to expand...
Click to collapse
Nope , it won´t erase any data, files, apps, etc from your internal o external storage
from the OP :
This zip is only modifying your current ramdisk. It will delete the normal fstab and add a binary, which detects if your data and cache partition are formatted with f2fs and create a new fstab every boot. It will also flash a twrp recovery, which is modified to work with f2fs.
It does not erase anything. It makes your current ramdisk compatible with f2fs. If you just flash this notjing changes. But you can convert you cache and data partition to f2fs after flashing the zip with the recovery. If you do that, all your data is lost.
If you have converted your partitions to f2fs and flash a new rom, you need to flash a f2fs-compatible kernel and this again.
CoolDevelopment said:
It does not erase anything. It makes your current ramdisk compatible with f2fs. If you just flash this notjing changes. But you can convert you cache and data partition to f2fs after flashing the zip with the recovery. If you do that, all your data is lost.
If you have converted your partitions to f2fs and flash a new rom, you need to flash a f2fs-compatible kernel and this again.
Click to expand...
Click to collapse
OK. Thanx. I will try. But if I will update the ROM (for example, when using CM nighlies), when there is no need to wipe all data, will I still need to perform all these steps to convert data partion to f2fs? I mean will I need every time restore all data again?
da900 said:
OK. Thanx. I will try. But if I will update the ROM (for example, when using CM nighlies), when there is no need to wipe all data, will I still need to perform all these steps to convert data partion to f2fs? I mean will I need every time restore all data again?
Click to expand...
Click to collapse
You need to flash a f2fs compatiblr kernel and this zip, no wipes
But if you don't do that your rom will bootloop
Sent from my Xperia Z1 Compact using XDA Premium 4 mobile app
New version!
I uploaded a new version with /system support and a few fixes.
I also updated the op.
Have fun!
I would guess that if you have f2fs you should flash the appropriate kernel only if switch ROMs or if the nightly build brings kernel changes.
If you install kernel with f2fs support and your partition is f2fs formatted, I think your data should be safe even between ROM changes.
Somebody please confirm my assumptions.
I hope oshmoun will have the time to build PAC ROM with oms kernel, built in [emoji12]
idimitro said:
I would guess that if you have f2fs you should flash the appropriate kernel only if switch ROMs or if the nightly build brings kernel changes.
If you install kernel with f2fs support and your partition is f2fs formatted, I think your data should be safe even between ROM changes.
Somebody please confirm my assumptions.
I hope oshmoun will have the time to build PAC ROM with oms kernel, built in [emoji12]
Click to expand...
Click to collapse
Every rom flashes a boot.img. This boot.img contains a zImage and a ramdisk(on sony devices it is a bit more complicated but that's enough for now).
Using f2fs needs:
1. A zImage(kernel) with f2fs support
2. A ramdisk with f2fs support
This zip modifies the ramdisk for compatibility with f2fs.
You need to flash a f2fs kernel manually.(for example my moshkernel)
And everytime you flash a new rom, you have to modify the contents of the boot.img again
And why don't I just let you flash a modified boot.img? It is only one file.
It would only be compatible with one rom. This is compatible with any rom and boot.img, which uses the ramdisk architecture like cyanogenmod(combinedrootfs).
I hope I could explain it well
If i want to format my system to f2fs, i just need to do step 6 as in your link and then zip back the rom?
So when ever i decide to do full wipe everything, will my system, data, cache format still in f2fs format?
Sent from my Candy Amami using Tapatalk
najar360 said:
If i want to format my system to f2fs, i just need to do step 6 as in your link and then zip back the rom?
So when ever i decide to do full wipe everything, will my system, data, cache format still in f2fs format?
Sent from my Candy Amami using Tapatalk
Click to expand...
Click to collapse
If you use TWRP yes
But if you want to revert back go to advanced wipe->change or repair filesystem/change filesystem-> ext4
CoolDevelopment said:
If you use TWRP yes
But if you want to revert back go to advanced wipe->change or repair filesystem/change filesystem-> ext4
Click to expand...
Click to collapse
i try to change data to f2fs format then flash new rom, mosh kernel, and this patch and then reboot system. i got bootloop. i didnt do step 6 yet.
najar360 said:
i try to change data to f2fs format then flash new rom, mosh kernel, and this patch and then reboot system. i got bootloop. i didnt do step 6 yet.
Click to expand...
Click to collapse
Can you tell me which rom?
I tried it with slimkat and it worked well
And what kind of bootloop? Do you see the sony or rom bootlogo?
And please use MoshKernel 0.1.2
CoolDevelopment said:
Can you tell me which rom?
I tried it with slimkat and it worked well
And what kind of bootloop? Do you see the sony or rom bootlogo?
And please use MoshKernel 0.1.2
Click to expand...
Click to collapse
i'm using candykat
my step, flash f2fs patcher, reboot recovery, change cache and data to f2fs format. reboot recovery again, wipe everything. checking cache and data still in f2fs. flash candykat, mosh kernel, f2fs patcher. reboot system. sony bootlogo appear, rom bootanimation appear. stuck for 10 minutes.
anything wrong with my step?
najar360 said:
i'm using candykat
my step, flash f2fs patcher, reboot recovery, change cache and data to f2fs format. reboot recovery again, wipe everything. checking cache and data still in f2fs. flash candykat, mosh kernel, f2fs patcher. reboot system. sony bootlogo appear, rom bootanimation appear. stuck for 10 minutes.
anything wrong with my step?
Click to expand...
Click to collapse
Did you use the latest MoshKernel?(0.1.2)
The new f2fs-patcher zip is not compatible with the old MoshKernel
CoolDevelopment said:
Did you use the latest MoshKernel?(0.1.2)
The new f2fs-patcher zip is not compatible with the old MoshKernel
Click to expand...
Click to collapse
yeaps. i'm using 0.1.2 version.
najar360 said:
yeaps. i'm using 0.1.2 version.
Click to expand...
Click to collapse
That's strange. I tried it with slimrom, which is the base for candycat as far as i know, and it worked perfectly.
CoolDevelopment said:
That's strange. I tried it with slimrom, which is the base for candycat as far as i know, and it worked perfectly.
Click to expand...
Click to collapse
is my step correct?
edit : try slimkat and it work.
I'm currently on AOSPExtended ROM(7.1.1) with it's stock kernel. I recently heard about f2fs system which is more faster and has increased life span of flash storage than current ext4 system.
Now I want to know whether this ROM and kernel are f2fs compatible, and how can I change my partitions to f2fs in detail without loosing my current data.
Thank you.
in previous iterations of android, only data partition was allowed to be in F2FS format (by default data partition is in F2FS format unless you have a GPE device). all the rest should be in ext4. some kernels allow cache to be in F2FS thats all. you can format some partitions to F2FS via TWRP recovery. however if any F2FS partition is unsupported you will endup in a bootloop.