[RECOVERY][KERNELs] Recovery and Kernel for F2FS 31/03/14 - Nexus 4 Original Android Development

Recovery and Kernels for F2FS
What is F2FS?
F2FS (Flash-Friendly File System) is a flash file system created by Kim Jaegeuk at Samsung for the Linux operating system kernel. The motive for F2FS was to build a file system that from the start takes into account the characteristics of NAND flash memory-based storage devices (such as solid-state disks, eMMC, and SD cards), which are widely used in computer systems ranging from mobile devices to servers.
Instructions:
I tested this procedure with SlimKat so my advice is to start with a working SlimKat rom or another rom that is reported to work good.
We have to Format our memory with F2FS. We need a "special" TWRP and a compatible kernel.
Compatible Kernel:
MiRaGeKernel-mako-F2FS-140331.zip
SlimKernel-mako-F2FS-140331.zip
(All credits to authors. I have only made them compatible with F2FS)
Download compatible Kernel
Download "special" TWRP openrecovery-twrp-2.7.0.0-mako-F2FS.img
Copy Kernel on Phone
Flash Kernel with your current Recovery
Flash "special" TWRP with Fastboot
Reboot in Recovery
Go to Wipe Menu and press Format Data (The Big BUTTON!) (You will LOSE all your Data! Music, Movies etc!!)
Reboot
(Recovery has a RED back button to remember you that you are using the F2FS recovery!)
Enjoy
Phone is snappy and smooth with F2FS.
{
"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"
}
To go back:
- Flash a "normal" recovery
- Flash your previous kernel
- Format Data
(Required commit)

---

legolas93 said:
Recovery and Kernels for F2FS
What is F2FS?
F2FS (Flash-Friendly File System) is a flash file system created by Kim Jaegeuk at Samsung for the Linux operating system kernel. The motive for F2FS was to build a file system that from the start takes into account the characteristics of NAND flash memory-based storage devices (such as solid-state disks, eMMC, and SD cards), which are widely used in computer systems ranging from mobile devices to servers.
Instructions:
I tested this procedure with SlimKat so my advice is to start with a working SlimKat rom or another rom that is reported to work good.
We have to Format our memory with F2FS. We need a "special" TWRP and a compatible kernel.
Compatible Kernel:
MiRaGeKernel-mako-F2FS-140331.zip
SlimKernel-mako-F2FS-140331.zip
(All credits to authors. I have only made them compatible with F2FS)
Download compatible Kernel
Download "special" TWRP openrecovery-twrp-2.7.0.0-mako-F2FS.img
Copy Kernel on Phone
Flash Kernel with your current Recovery
Flash "special" TWRP with Fastboot
Reboot in Recovery
Go to Wipe Menu and press Format Data (The Big BUTTON!) (You will LOSE all your Data! Music, Movies etc!!)
Reboot
(Recovery has a RED back button to remember you that you are using the F2FS recovery!)
Enjoy
Apart from Benchmarks phone is snappy and smooth.
To go back:
- Flash a "normal" recovery
- Flash your previous kernel
- Format Data
(Required commit)
Click to expand...
Click to collapse
whtz the benefit of this, plz

---

abir099 said:
whtz the benefit of this, plz
Click to expand...
Click to collapse
It's built specifically for flash storage, including FS level TRIM which executes the command during every commit and doesn't need to rely on Android's native TRIM which only TRIMs during screen off. It's much faster based on current implementations and etc. The only downside is that F2FS isn't considered "stable" yet. This is why there's not a lot of devices on the market has F2FS out of the box. The only one I know is the Moto X and G.
deltatux

---

Also work with my HellsDoctor and @ak 's one.

---

@legolas93 are you going to release an ALL-F2FS version like you did for the nexus 7 2012?

---

Doesn't seem to have done anything. I followed the op. Running ak newest kernel. Got the right twrp with red back button. Went to wipe went to format typed yes. Operation completes very quickly. Reboot and everything seems to be the same ie all items are still on SD card.
How do I tell if this worked?
Sent from my Nexus 4 using Tapatalk 2

---

jmtjr278 said:
Doesn't seem to have done anything. I followed the op. Running ak newest kernel. Got the right twrp with red back button. Went to wipe went to format typed yes. Operation completes very quickly. Reboot and everything seems to be the same ie all items are still on SD card.
How do I tell if this worked?
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
it worked when there's no data left on your internal, maybe try to wipe data again, and post recovery.log

---

@legolas93 Did you ported F2FS from which version of Linux?

---

jmtjr278 said:
Doesn't seem to have done anything. I followed the op. Running ak newest kernel. Got the right twrp with red back button. Went to wipe went to format typed yes. Operation completes very quickly. Reboot and everything seems to be the same ie all items are still on SD card.
How do I tell if this worked?
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
This happens to me too. Some installed apps FC after doing this, though.
It is like TWRP does nothing to the phone. Factory resets or classical wiping don't do anything, either.

---

--

---

PatrickMac said:
@legolas93 are you going to release an ALL-F2FS version like you did for the nexus 7 2012?
Click to expand...
Click to collapse
I don't think that All-F2FS make us gain a big benefit and we will lose support of all ROMs...etc..
I think it's better to stay with only /data as F2FS in this case, so we can use all ROMs with a very small pain.
jmtjr278 said:
Doesn't seem to have done anything. I followed the op. Running ak newest kernel. Got the right twrp with red back button. Went to wipe went to format typed yes. Operation completes very quickly. Reboot and everything seems to be the same ie all items are still on SD card.
How do I tell if this worked?
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Try to follow the procedure flashing one of the two kernel on first post. When you are ok try to flash ak over it!
Use DiskInfo to see if all went good!
guimendes said:
@legolas93 Did you ported F2FS from which version of Linux?
Click to expand...
Click to collapse
It's mainly a dennes54 kernel-work. We are around Linux 3.10+ level..

---

@legolas93 could you maybe upload another compatible kernel? Seems like these only work for AOSP ROMs and not CAF.... Hellscore's CM kernel (http://d-h.st/u6o) would be awesome ☺
Sent from my Nexus 7 using Tapatalk

---

Awesome mate I liked f2fs; better storage performance and handling. But only thing holding me back is fewer kernels supporting this filesystem. Can you make matr1x kernel supporting this f2fs?

---

Thanks. My device is not yet rooted, gonna root it soon. So my question is, after finishing rooting and flashing slimkat like I planned to, can I use the f2fs like instructed or do I need to do anything else?

---

So anyone can tell me what's the advantage? I read it but didn't get it.

---

Don't work.... always on ext4 and data not formated... My kernel support f2fs.

---

barome said:
Don't work.... always on ext4 and data not formated... My kernel support f2fs.
Click to expand...
Click to collapse
Do you mean it does not work with HellsDoctor?
Sent from my AOSP on Mako using Tapatalk
---------- Post added at 06:26 PM ---------- Previous post was at 06:23 PM ----------
@legolas93 Is there a modified CWM recovery image with F2FS support added for this device?
Sent from my AOSP on Mako using Tapatalk

---

halfbytecode said:
Do you mean it does not work with HellsDoctor?
Sent from my AOSP on Mako using Tapatalk
---------- Post added at 06:26 PM ---------- Previous post was at 06:23 PM ----------
Is there a modified CWM recovery image with F2FS support added for this device?
Sent from my AOSP on Mako using Tapatalk
Click to expand...
Click to collapse
Hells Doctor is comptaible F2FS but this recovery doesn't format data at all... And always ext4 of course

---

barome said:
Don't work.... always on ext4 and data not formated... My kernel support f2fs.
Click to expand...
Click to collapse
It worked for me. My data was formated. I tried it with the kernels provided in the OP. Your kernel stuck at the bootanimation. So I guess your implementation is different from legolas kernel mods.

---

PatrickMac said:
It worked for me. My data was formated. I tried it with the kernels provided in the OP. Your kernel stuck at the bootanimation. So I guess your implementation is different from legolas kernel mods.
Click to expand...
Click to collapse
Hmmm... Maybe... I committed same change as @ak so xGenesis must not work too.