Database Users

Factory image / OTA and F2FS

Hi there,
I searched a lot on the subject, but I'm still not sure if/how this would work:
Can you install a factory image or an OTA update on a F2FS formated Nexus 7 2012?
Currently I have a lollipop custom ROM and kernel, with all F2FS and TWRP running on my Nexus 7. Could I install a custom F2FS kernel on my F2FS formated Nexus 7, like Phantom, and then only flash system.img and userdata.img from a lollipop factory image? Then, could I simply flash future OTA update zips?
Thanks!

It will just format it back to ext4. I've been trying to get f2fs to wepork on mine but I can't get the damn thing to recognize and side load. So I keep having to reflash official builds and it just rewrites everything to the stock build. I flashed the whole thing as f2fs wiped the device.

bill3508 said:
It will just format it back to ext4. I've been trying to get f2fs to wepork on mine but I can't get the damn thing to recognize and side load. So I keep having to reflash official builds and it just rewrites everything to the stock build. I flashed the whole thing as f2fs wiped the device.
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Click to collapse
Hi,
I got as far as (in short):
- Flash factory image
- Flash openrecovery TWRP
- Backup system and data (you have to make some space on system first, e.g. by moving some apps over to data)
- Format system, cache and data to F2FS in TWRP
- Restore system and data backup with "Use rm -rf instead of formatting" checked in TWRP settings
- Flash boot.img from Phantom kernel
I got this to work with LP 5.02, but for some reason with 5.1 the system restore failed so far... As for updates, I thought that, in the same way, you could just restore a system backup of a newer factory install over your actual system, but I haven't tried that yet.
Then again, this all is quite tedious. I'm not very advanced in img or ROM modification, but I'd like to know what one would have to modify in factory images or ROMS to make them F2FS compatible. For JB there are ressources out there, but I haven't found anything for LP so far... Anyone?

All I did was on 5.1 flashed a F2FS kernel then in TWRP formated cache. It was like night and day.

Simply formating cache to f2fs makes already such a difference? Interesting, will give this a try. This would be a fairly easy solution to have a fast stock experience. I might try formating data to f2fs as well (and restoring backup), but leaving system on ext4. This way you may be able to simply flash the system image from future factory images to update your system, that would be a good enough solution for me.

First try updating to 5.1.
5.1 is running and performing so much better than on 5.0.2.
Even with ext4 filesystem and stock kernel.
Sent from my Nexus 7 using XDA Free mobile app

I already am on 5.1. Intitially it ran pretty good indeed, but I'm starting to get occasional lags again now. Not as bad as before, but still not as smooth as with JB when it was new... Like I said earlier, I haven't managed to do the TWRP f2fs backup and restore method for some reason with 5.1, but keeping system on ext4 might do the trick, so I'll try that and see if it improves upon stock 5.1...

rbeavers said:
All I did was on 5.1 flashed a F2FS kernel then in TWRP formated cache. It was like night and day.
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Hey rbeavers, what kernel did you flash? I tried with Phantom Kernel r1 and r2, and I get NFC force close at startup, which prevents from using the tablet...
Thanks.

maksmtl said:
Hey rbeavers, what kernel did you flash? I tried with Phantom Kernel r1 and r2, and I get NFC force close at startup, which prevents from using the tablet...
Thanks.
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Click to collapse
I'm using Franco Kernel(r82). It supports F2FS(formatted /cache and /data to F2FS) and it works flawlessly.

TWRP backups fail on stock 5.1 with f2fs/franco?
I downloaded the 5.1 factory image; installed it using the included batch file; installed franco r82 and formatted /cache and /data to f2fs. It seems to run reasonably well, but TWRP 2.8.5.1 and 2.8.6.0 both fail to make a backup, giving an unspecified error when backing up the data partition. Do you experience the same thing? Do you know of a workaround?

maksmtl said:
Hey rbeavers, what kernel did you flash? I tried with Phantom Kernel r1 and r2, and I get NFC force close at startup, which prevents from using the tablet...
Thanks.
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Click to collapse
Franco Kernel(r82) sorry so late.
Still working great! Only gripe 2 - 3 second delay on waking up.

rbeavers said:
All I did was on 5.1 flashed a F2FS kernel then in TWRP formated cache. It was like night and day.
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Click to collapse
rbeavers said:
Franco Kernel(r82) sorry so late.
Still working great! Only gripe 2 - 3 second delay on waking up.
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Click to collapse
Running really good so far with Franco Kernel and Cache and Data in f2fs. Thanks guys.
I also don't get that wake delay btw. Maybe wipe cache again?
@CCarson: I made a successful backup using TWRP 2.8.6.0. Maybe backup your sdcard and then re-format data. Also, don't know if this applies to you, but if you have the 16GB model, the 5.1 factory image formated mine to 8GB, so I had to re-format data once to get it back to 16GB and only then I changed it to f2fs.

{HELP} Unable to Change ext4 to f2fs

Update: i Fixed it by myself. Thanks
Hello! i am new here. i have samsung galaxy s3 neo i9300i. updated to android 4.4 with TWRP installed. i wanted to flash cm 12.1 rom by "Rox". but he wrote in order to flash one need to change the partition from ext4 to f2fs which i followed but didn't find in TWRP wipe>advanced>change partition there are others but not f2fs. because of this problem i have flashed the ROM & GApps & they both flashed successfully but when i rebooted the system, download mode appears. did rebooted several times but the problem was still there. plz help me. i want CM 12.1. THANKS

WTF.... Well, guy, you needn't to convert partitions, you only have to wipe data, dalvik and cache and flash ROM & Gapps.
If you want to convert, convert only data and cache... idk why you haven't this options... Well, I never converted this files, and CM12.1 is working fine.

not working
MarcusBS said:
WTF.... Well, guy, you needn't to convert partitions, you only have to wipe data, dalvik and cache and flash ROM & Gapps.
If you want to convert, convert only data and cache... idk why you haven't this options... Well, I never converted this files, and CM12.1 is working fine.
Click to expand...
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i tried but when i flashed, its stuck in the download mode. just like Rox wrote i did that. nothing more.

Did it by myself...
The problem with my phone was the TWRP 2.7.1.0, + due to root ota updates not worked, so i downloaded another rom 4.3, flashed it, updated to kitkat (ota), flashed TWRP 2.8.5, flashed the rom (cm 12.1 by rox), flashed the gApps... now it's working... Thanks...

F2fs on s7 edge? Is possible?

Hi
i use this device with promethus kernel 1.3 that says it support f2fs but i'm unable to use it
it bootloop when i change file system from ext4 to f2fs.
thanks

same q, cant get it working on king rom v14 and latest promethus v1.9.
Had it working on an old version

its works only for DATA and CACHE partition as F2FS, for boot issues you HAVE TO install SuperSU SYSTEM MOD (http://forum.xda-developers.com/apps/supersu/v2-64-2-66-supersu-mode-t3286120)
its works for my with hydrarom(+hydrakernel)

How to use F2FS on Lenovo A6000?

Hello i tried formatting cache and system partitions as F2FS but TWRP 3020 says Failed to mount /system and /cache (no such device)
Heres the log.Should i continue flashing rom and ignore this message or what?

which twrp version you are using?

varun4495 said:
which twrp version you are using?
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TWRP 3020
I tried flashing rom it didnt work

JovanSijacki said:
TWRP 3020
I tried flashing rom it didnt work
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Rom flashing gives error of mounting system fail?

F2fs Need Recovery compiled with a kernel that has f2fs Support How Can your Old Recovery Support F2fs Which is just Made for Simple Tasks Better Switch to f2fs Based recovery and Regarding system partition as f2fs Really bro you serious ? who made f2fs Supported Rom For lenovo a6000 although you may use "Userdata" & Cache as f2fs and That Too in MIUI builds well hope this information clears to you what is needed and What isnt

Yes it does,so what should i do to use f2fs which recovery

Can enyone explain how to get fully working f2fs lenovo a6000

JovanSijacki said:
Hello i tried formatting cache and system partitions as F2FS but TWRP 3020 says Failed to mount /system and /cache (no such device)
Heres the log.Should i continue flashing rom and ignore this message or what?
Click to expand...
Click to collapse
Try This one.. this helped me when i was stuck in the same failed to mount error.
try this one.

[FIX][8.1][Treble]Decryption Unsuccessful and TWRP Internal Storage 0MB

As the tittle says, this is my current workaround for issues that happened after most people update their AOSP based ROMs after 3rd July 2018.
Decryption Unsuccessful
Q: Why does this happens ?
A: There's some weird issues with the latest AOSP based ROM that makes encrypted ext4 based data partition unable to be decrypted in both system and older version of TWRP if you're encrypted before (intentionally or unintentionally). This however doesn't apply to F2FS and unencrypted ext4 data partition.
Q: How do I solve this ?
A: There's 2 ways you can do to solve this issue.
The best way and the most recommended way is to repartition your data into F2FS. However it does require you to do a backup beforehand since this will wipe everything in your internal storage.
1. Backup your internal storage from TWRP (either to a SD card or PC via ABD)
2. Format it by going into TWRP and select Format and choose "wipe data"
3. Type "yes" and let the process end.
4. Flash your ROM and GApps.
5. Finish the setup without setting any screen lock so that it doesn't encrypt your data partition.
-Or-
The other way does is to install a custom kernel is made after 20 July 2018
List of kernel that can boot successfully without the need to wipe /data :
-Xenial b25x or newer
-Revolt EAS-R13
(Got kernel that works and doesn't show up here? TELL ME, I'll add it to my list for everyone's reference)
Link for the working TWRP that can detect Internal Storage :
Jairus' modded TWRP
https://androidfilehost.com/?fid=5862345805528049168
Or you can look up Orange Fox recovery
(link will be added soon)

Good Stuff Also This Happened to me while i was using the Android P DP3 i tried twrp and redwolf and was the same i flashed the Orange Fox and it worked

Does this twrp can flash both treble and non treble ROM?

eko_epe said:
Does this twrp can flash both treble and non treble ROM?
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Yes, it does

AkmalWarrior said:
Yes, it does
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Click to collapse
Ok i'll try. Thanks

As the OP said, OrangeFox TWRP Recovery (R6-Beta) can decrypt encrypted data partitions.

DarthJabba9 said:
As the OP said, OrangeFox TWRP Recovery (R6-Beta) can decrypt encrypted data partitions.
Click to expand...
Click to collapse
TWRP and redwolf too (find on telegram)
Envoyé de mon Redmi Note 4 en utilisant Tapatalk

DarthJabba9 said:
As the OP said, OrangeFox TWRP Recovery (R6-Beta) can decrypt encrypted data partitions.
Click to expand...
Click to collapse
*Only in recovery, not in boot. The only way to fix decryption unsuccessful on boot is to either repartition data to F2FS or flash a custom kernel that's made after 20 July. List on working kernels is on main thread.

First I tried orange fox beta and it showed my internal storage
Then I flashed the RR endless
But the encryption was still there
Then I tried the twrp from this thread and flashed rom with latest xenial
And it worked no problem
Thank you

How for steps come from nougat Rom up to Oreo, should i flash xenial kernel directly after the ROM flashed? i want flash Aicp Oreo currently i'm on Los14.1

DarksTor said:
How for steps come from nougat Rom up to Oreo, should i flash xenial kernel directly after the ROM flashed? i want flash Aicp Oreo currently i'm on Los14.1
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Click to collapse
Sine you are using nougat i recommend to format data (wipes internal storage) so take a backup if you want
And I have also seen users reporting bugs about aicp oreo on telegram so try some other ROMs like resurrection remix,screwd,lineage os extended,aex ........
All oreo Roms are now treble
So use treble twrp
And treble magisk

antony felix said:
Sine you are using nougat i recommend to format data (wipes internal storage) so take a backup if you want
And I have also seen users reporting bugs about aicp oreo on telegram so try some other ROMs like resurrection remix,screwd,lineage os extended,aex ........
All oreo Roms are now treble
So use treble twrp
And treble magisk
Click to expand...
Click to collapse
Thanks,So i must format internal too,. It's ok but how if i want to comeback use nougat..? I hear who's downgrade after using oreo will get "encryption was interrupted" on any nougat los/aosp base rom,should be format internal for working back the devices..
I think by this thread shared we get solution for who's want to downgrade from oreo without facing encryption issue enytime for oreo back to nougat or vice

DarksTor said:
How for steps come from nougat Rom up to Oreo, should i flash xenial kernel directly after the ROM flashed? i want flash Aicp Oreo currently i'm on Los14.1
Click to expand...
Click to collapse
Flash the rom and test it out if you can boot it. I think most rom now have native support for ext4 based data partition.
If you can't boot however, try one of the kernel listed on the OP.

What if i flash Jairus' modded TWRP from fastboot? Does it solve the encryption problem without losing all the data? Also does it work on non-treble roms?

AkmalWarrior said:
Flash the rom and test it out if you can boot it. I think most rom now have native support for ext4 based data partition.
If you can't boot however, try one of the kernel listed on the OP.
Click to expand...
Click to collapse
Finally i can confirm for fixed "encryption was interrupted" by changing data partition into F2FS, yes i think it's only way to get free from that, i'v been test it back to back from oreo down to nougat or vice, no worry anymore
Below screenshot for oreo left side and nougat in right

ngydna said:
What if i flash Jairus' modded TWRP from fastboot? Does it solve the encryption problem without losing all the data? Also does it work on non-treble roms?
Click to expand...
Click to collapse
Read the OP, the recovery only help you boot into recovery and format your data partition or flash a custom kernel to allow you to boot into system as this issue does affect some older version of TWRP recovery. The recovery alone can't help you boot into system.

I took out my sdcard and did format data on the internal storage and now i can't mount my sdcard. Didn't think about the fact that removing the encryption on the internal storage would make it unable to recognize the encryption on the sdcard afterwards. Is there any way to fix this? Or did I just screw myself?
---------- Post added at 01:53 PM ---------- Previous post was at 01:00 PM ----------
When I reinstalled the rom and tried to boot it still asks me for my password which still works even though I can't boot because it says that the data is corrupted. But the encryption key should still be stored somewhere apparently. There must be a way to use it to decrypt the sdcard.