[MOD][ANY][Mitsuyoshi EXT4 Mod][flo] - Nexus 7 (2013) Original Android Development

This is the flo version of my mod for the old nexus 7 here http://forum.xda-developers.com/show....php?t=2280496
Repeating the intro to save you guys going there
Background..
With any linux system i build first thing i do is remove the journal from all my EXT4 partitions, to make a long story short ( i wont bore you with details of just how journal writes totally slow disk i/o , google it ) this gave me on average a 25% increase in system speed ( obviously due to the increased i/o rate )
I usually did it with
Code:
mke2fs.ext4 -O ^has_journal ...device...
before installing the distro, now i thought hey maybe this would work on android?
Now mke2fs is not well supported on arm but tune2fs is! in fact its included in TWRP 2.5 so
Code:
run_program("/sbin/tune2fs", "-O", "^has_journal", "/dev/block/platform/msm_sdcc.1/by-name/system");
( for the system partition) should work right , and in fact yes it does !!!, tried it from TWRP command line and hey presto %^$%^$^%$ FAST system
This is the code for a recovery script version
Code:
ui_print("jubei.....remove journals from all ext4 partitions");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/boot /boot emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/recovery /recovery emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/misc /misc emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/system /system ext4");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/userdata /data ext4");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/cache /cache ext4");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/sbl1 /sbl1 emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/sbl2 /sbl2 emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/sbl3 /sbl3 emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/tz /tz emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/rpm /rpm emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/aboot /aboot emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/sbl2b /sbl2b emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/sbl3b /sbl3b emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/tzb /tzb emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/rpmb /rpmb emmc");
ui_print("/dev/block/platform/msm_sdcc.1/by-name/abootb /abootb emmc");
ui_print("");
ui_print("");
ifelse(is_mounted("/system") == "/system", unmount("/system"));
ifelse(is_mounted("/cache") == "/cache", unmount("/cache"));
ifelse(is_mounted("/data") == "/data", unmount("/data"));
ui_print("converting partitions to ext4 minus journal");
ui_print(" ");
ui_print("e2fsck system partition");
ui_print(" ");
run_program("/sbin/e2fsck", "-p", "/dev/block/platform/msm_sdcc.1/by-name/system");
ui_print("e2fsck data partition");
ui_print(" ");
run_program("/sbin/e2fsck", "-p", "/dev/block/platform/msm_sdcc.1/by-name/userdata");
ui_print("e2fsck cache partition");
ui_print(" ");
run_program("/sbin/e2fsck", "-p", "/dev/block/platform/msm_sdcc.1/by-name/cache");
ui_print("now lets rub out those nasty journals");
ui_print(" ");
run_program("/sbin/tune2fs", "-O", "^has_journal", "/dev/block/platform/msm_sdcc.1/by-name/userdata");
run_program("/sbin/tune2fs", "-O", "^has_journal", "/dev/block/platform/msm_sdcc.1/by-name/system");
run_program("/sbin/tune2fs", "-O", "^has_journal", "/dev/block/platform/msm_sdcc.1/by-name/cache");
ui_print("and re-fsck to clean any set bits");
ui_print(" ");
ui_print("e2fsck system partition");
ui_print(" ");
run_program("/sbin/e2fsck", "-p", "/dev/block/platform/msm_sdcc.1/by-name/system");
ui_print("e2fsck cache partition");
ui_print(" ");
run_program("/sbin/e2fsck", "-p", "/dev/block/platform/msm_sdcc.1/by-name/userdata");
ui_print("e2fsck cache partition");
ui_print(" ");
run_program("/sbin/e2fsck", "-p", "/dev/block/platform/msm_sdcc.1/by-name/cache");
ui_print("end of jubei mod ");
And i include a zip for those who like to test
there are 2 scripts, one to remove the journal from your ext4 partitions, and one to re-instate the journal, this should allow people to test their setup with each without any wiping or reformatting
Instructions.......
( tested with TWRP 2.5+ only )
Flash the bugger
DO NOT WIPE ANYTHING, after flashing, doing so will only reformat the wiped partition with a journal
There will be one update that includes a test routine to ensure journals have been erased
I am now able to extend the mod to any device that uses twrp 2.5+ and ext4, plese ask for a particular device on this thread
Thank you
Edit Please note non flo versions are not tested by me.
Edit mako version added after request
Edit hammerhead version added after request

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great mod. will definitely try after school
sent from nowhere

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I imagine this will still work on CWM? Or is there a reason it won't?
Sent from my Nexus 5 with the KlearKat tapatalk app!

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djdarkknight96 said:
I imagine this will still work on CWM? Or is there a reason it won't?
Sent from my Nexus 5 with the KlearKat tapatalk app!
Click to expand...
Click to collapse
to be honest no idea. im developing on twrp exclusively, as long as CWM has tune2fs and is EDIFY complient should be good to go

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Nice speed up on flo.
How bout if i run this on mako....?
Sent from my Nexus 7 using xda app-developers app

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Is this safe though?
Sent from my Nexus 7 (2014) using Tapatalk. My mobile is a CM11 run Galaxy S3.

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kcxda78 said:
Nice speed up on flo.
How bout if i run this on mako....?
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
not sure will have to check but doubt it
As said in the post though, can do a version for any device that uses ext4 and twrp , do you need a mako version ?

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jubei_mitsuyoshi said:
not sure will have to check but doubt it
As said in the post though, can do a version for any device that uses ext4 and twrp , do you need a mako version ?
Click to expand...
Click to collapse
i would personally appreciate a mako version as well if that is possible, it has a similar hardware set to this 2013 n7 too

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Yes plz. Id like to try it on mako. :thumbup:
Sent from my Nexus 4 using xda app-developers app

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I'll try on my n7.
Can you do a nexus s?

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ok will do a mako and nexus s for tonight sometime

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and hammerhead please?
vía n7II r-paco

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I remember the great results on got from this on my grouper when I flashed this on flo it seemed to run the script fine but the recovery automatically rebooted when it had finished. Is this to be expected? Device booted fine and running great so far. Thanks!
Sent from my Nexus 7 using XDA Premium 4 mobile app

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jubei_mitsuyoshi said:
ok will do a mako and nexus s for tonight sometime
Click to expand...
Click to collapse
Thanks! :good:

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jubei_mitsuyoshi said:
ok will do a mako and nexus s for tonight sometime
Click to expand...
Click to collapse
Removing journal works good here. Actually I'm always doing the same (using manjaro here).i wonder if you even have the time to make a patch for removing the journal for the LG G2 (d802). Just a question ☺ I never thought about removing it on my phones, too.. Really nice idea and patch! ☺ than you very much!

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elfrosto said:
I remember the great results on got from this on my grouper when I flashed this on flo it seemed to run the script fine but the recovery automatically rebooted when it had finished. Is this to be expected? Device booted fine and running great so far. Thanks!
Sent from my Nexus 7 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
no have not had twrp just go straight into reboot, it normally stops then allows the normal options, a bit strange of anyone else gets it will look into it, if it happens to you again please mention it here,
Thanks

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mako done, but obviously canot test thoroughly, if anyone has any issues please bring em up here and i will look into them.
hammerhead and nexus s coming

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Ran benchmark in antutu and it decreased storage io by about 200, and database io by about 80.
Is this suppose to happen?
Sent from my Nexus 7 using xda app-developers app

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datallboy said:
Ran benchmark in antutu and it decreased storage io by about 200, and database io by about 80.
Is this suppose to happen?
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
nope most of the testing from the previous thread seemed positive, although i believe the benchmarker was different.
I have done zero benchmarking on the n7 2013.
Try running the same test several times i think you will find quite a large margin of innacuracy.
Removing the journal on a battery backed solid system seems common sense to me, thats why i do it.
I believe you would find most benefit flashing after gapps since then the system will have never initialised a journal in the first place.
And the following code in your init.d should bring out the i/o benefits
Ps hammerhead is up
Code:
busybox mount -o remount,noatime,nobh /system
busybox mount -o remount,noatime /data
busybox mount -o remount,noatime,nobh /cache

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jubei_mitsuyoshi said:
nope most of the testing from the previous thread seemed positive, although i believe the benchmarker was different.
I have done zero benchmarking on the n7 2013.
Try running the same test several times i think you will find quite a large margin of innacuracy.
Removing the journal on a battery backed solid system seems common sense to me, thats why i do it.
I believe you would find most benefit flashing after gapps since then the system will have never initialised a journal in the first place.
And the following code in your init.d should bring out the i/o benefits
Ps hammerhead is up
Code:
busybox mount -o remount,noatime,nobh /system
busybox mount -o remount,noatime /data
busybox mount -o remount,noatime,nobh /cache
Click to expand...
Click to collapse
So what does this code do? Should i add it into my init.d on mako?