Database Develop

How to convert partition to ext4 without lagfix?

Hi all, I just find the mount point /data is in ext4, but /cache and /dbdata both still in rfs. Can I umount /cache and /dbdata manually, then run
mke2fs -t ext4 /dev/XXXX
then change fstab, and reboot the phone?

So, what's the point in avoid using any lagfix? As far as I know lagfix will do exactly what you stated in your post, use mke2fs to convert any partition to ext4.
If /cache and /dbdata were not in ext4 maybe the lagfix you used wasn't supossed to convert those.

I already applied lagfix, and it work good, I don't want to apply another lagfix just to fix those 2 mount point.... as I never smooth to get lagfix working..... doing it step by step myself sound better

carfield said:
I already applied lagfix, and it work good, I don't want to apply another lagfix just to fix those 2 mount point.... as I never smooth to get lagfix working..... doing it step by step myself sound better
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Emm, have you tried speedmode or SO kernels? Essentially it is what you are asking

OK, so what kernel have you flashed?
First, dbdata contains important system data, mke2fs would clear it,
and you would end up with unusable system. And you have no guarantee
that init script of kernel you are using actually cares what's in fstab. It's
best to do this consistently - I sugest to go back to stock FS (rfs),
and then flash Voodoo Kernel. Except for Voodoo Sound and few tweaks,
it's like stock, without useless bloatware. Seems to be fastest according
to Quadrant, too.

dupel said:
Emm, have you tried speedmode or SO kernels? Essentially it is what you are asking
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Thanks, would you point me to some links about that? Sorry I haven't done good research before.

carfield said:
Thanks, would you point me to some links about that? Sorry I haven't done good research before.
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Just do some search, that is another lagfix, can I safely apply multiple lagfix to single device? I will search for the lagfix I used when I at home

HI, the lagfix I applied is ZSJP3 , the kernel is I9000ZSJP3-zImage

To be safe, you should remove all previous lagfix first. Afterwards, flash SpeedMod Kernel via Odin. You can find detailed instructions in the speedmod thread. To put it simply, download the Odin file, get Odin off www.samfirmware.com, put the file you downloaded into "phone". Leave everything else untouched and flash. Afterwards, go into recovery to activate the Lagfix options.

snapper.fishes said:
To be safe, you should remove all previous lagfix first. Afterwards, flash SpeedMod Kernel via Odin. You can find detailed instructions in the speedmod thread. To put it simply, download the Odin file, get Odin off www.samfirmware.com, put the file you downloaded into "phone". Leave everything else untouched and flash. Afterwards, go into recovery to activate the Lagfix options.
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Thanks, but how to remove previous lagfix?

[Q] Need help with ext3 and ext4.

Hi i'm new here and i have some question need you guys help.
1)I'm now on stock rom and kernel with ext3 file.Do i need to do anything if i want to load new rom or kernel with ext4 from cwm 5.0.2.0?
2)If my current rom or kernel is ext4 and i want to load back to ext3,what should i do?
Sorry for my bad english.

You don't need to do anything to switch to EXT4, ROMs convert on install. Take a backup of your stock setup, you can restore that to get back to EXT3 as you're using CWM v5.

Thanks you Rusty!
So the newest cwm will automatically convert it to ext4 right?!Except for ext3,i need to convert it using backtoext3 from Paul or restore back to stock.

No.
A ROMs updater-script will convert to EXT4 if it needs it. CWM v5 will convert back to EXT3 when restoring a backup of an EXT3 ROM.

Thanks again Rusty!
I get the picture now!

[Q] Does ACE support ext2?

Hello,
I want to know whether the original ROM for ACE support ext2, ext3, and ext4 filesystems. I have partitioned my sdcard in 3 partitions one is FAT32 and the others two are ext.
Thanks.

ext2, yes. its supported even on stock samsung rom with stock kernel.
ext3 and ext4 no, need custom kernel.

an0nym0us_ said:
ext2, yes. its supported even on stock samsung rom with stock kernel.
ext3 and ext4 no, need custom kernel.
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Thanks I will check it.

Just installed EXT2 for Link2SD on a Samsung Ace stockrom 2.3.5. This works.:good: First tried EXT3, didn't seem to work.

Stock rom plus stock kernel supports ext2 but stock rom with stock kernl doesnt support ext4 or 3
I would recommend you to flash nims kernel and use ext4 type and use ext4 tweak by mr slaid to improve performance
Give it a shot

kzintest said:
Just installed EXT2 for Link2SD on a Samsung Ace stockrom 2.3.5. This works.:good: First tried EXT3, didn't seem to work.
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.ext4 partions works fine in 2.3.5... tested by me
I think you failed the installation procedure

EXT4

I want to flash the stock v20s rom....and iti is in ext3 format right? so my question is....Can I convert it to ext4 or the rom needs to support ext4 format?

ilooze said:
I want to flash the stock v20s rom....and iti is in ext3 format right? so my question is....Can I convert it to ext4 or the rom needs to support ext4 format?
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The kernel needs to support ext4. The stock kernel does not, so if you want to use ext4 you also need to flash a custom kernel.

lagfix help

I installed corn kernel and its running fine and I found out that it is lagfix enabled.........just one doubt ....do I need to disable lagfix before flashing any roms? if so how to disable it ....I can see rfs and ext4 in cwm what are these?

which Corn version are you running?
I run 7.0a and by default, it has no lagfix. don't need it afaik.
rfs and ext4 are different types of linux file systems that are used to store data in partitions on your phone. my phone had froyo os with rfs partitions when I bought it new. It still has rfs partitions with Corn 7.0a GB KK4.
If you are messing around with file partitions in cwm recovery, just remember that any change from rfs to ext4 will completely reformat the partition and you will lose any data on it.
If you flash ICS or JB, you are going to an ext4 file system.
goes without saying: backup everything with cwm and a backup app like titanium bu, then copy all of it to an external sd, computer or cloud. if on sd, remove it before flashing, to be safe.
Sent from my SAMSUNG-SGH-I897 using xda app-developers app

laughingT said:
which Corn version are you running?
I run 7.0a and by default, it has no lagfix. don't need it afaik.
rfs and ext4 are different types of linux file systems that are used to store data in partitions on your phone. my phone had froyo os with rfs partitions when I bought it new. It still has rfs partitions with Corn 7.0a GB KK4.
If you are messing around with file partitions in cwm recovery, just remember that any change from rfs to ext4 will completely reformat the partition and you will lose any data on it.
If you flash ICS or JB, you are going to an ext4 file system.
goes without saying: backup everything with cwm and a backup app like titanium bu, then copy all of it to an external sd, computer or cloud. if on sd, remove it before flashing, to be safe.
Sent from my SAMSUNG-SGH-I897 using xda app-developers app
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I'm 7.0 A btw ......thanks for reply it was booting up pretty fastly so I thought it has lagfix enabled .....if it doesn't have lagfix then I can flash ics roms directly without problems rite

The Ext 4 is not enabled by default in the Corn Kernels.
And Yep...flash away.
Sent from my SGH-I897 using xda premium