[MOD][ANY][Mitsuyoshi EXT4 Mod][flo]

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Luigi_2

Luigi_2

Senior Member
Sep 5, 2010
627
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when I update my rom, i usually wipe cache and dalvik cache after flashing rom, do i need to install the zip everytime i wipe cache?
 
habylab

habylab

Senior Member
Dec 3, 2010
6,228
1,200
I'll ask again, is this safe? Thank you!

Sent from my Nexus 7 (2014) using Tapatalk. My mobile is a CM11 run Galaxy S3.
 
numbere

numbere

Senior Member
Aug 27, 2013
172
34
Thanks for the great mod! Will you please make one for jflteatt it's the at&t galaxy s4. Would be greatly appreciated
 
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nokiagye
nokiagye

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  • 11
    J
    jubei_mitsuyoshi
    This is the flo version of my mod for the old nexus 7 here http://xdaforums.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
    View
    2
    J
    jubei_mitsuyoshi
    ok will do a mako and nexus s for tonight sometime :)
    View
    1
    J
    jubei_mitsuyoshi
    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
    View
    1
    J
    jubei_mitsuyoshi
    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 ?
    View
    1
    J
    jubei_mitsuyoshi
    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 :)
    View

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