I am noticing that clockwork now has support for both ext3 and ext4. Can someone please explain to me what I would use ext3 or ext4 for. Are any of the new roms compatable with darktremmers app2sd? I used ext3 on my cliq for that reason but on the g2x with all the confusion with internal and external and internal-external sd, I am kind of lost and need a little clarification if someone wouldn't mind. My sd card i use now I have partitioned to ext3 but so far I have had no need for it and was about to remove that partition but if I may need it in the future when I flash a new rom I will just leave it or upgrade it to ext4. Thanks.
I'm not a dev, so forgive my simplistic explanation. Basically EXT4 is a much faster I/O file system. After flashing a kernel that has EXT4 support my I/O scores in Quadrant Advanced shot up and my total score is now over 4000. Before that I could get in the 3700's. So it makes a big difference there.
As for apps2sd I'm honestly not sure.
So basically it's a more efficient file system.
iamlilysdad said:
I'm not a dev, so forgive my simplistic explanation. Basically EXT4 is a much faster I/O file system. After flashing a kernel that has EXT4 support my I/O scores in Quadrant Advanced shot up and my total score is now over 4000. Before that I could get in the 3700's. So it makes a big difference there.
As for apps2sd I'm honestly not sure.
So basically it's a more efficient file system.
Click to expand...
Click to collapse
SSo I guess they are not talking about the sd card?? Just the file system. I think I am beginning to understand> Thank you
Just flash in clockwork and it will format your system and data partitions back to ext3. Faster than dealing with nandroid restores.
Useful for reverting from installs using Dragon or Trinity kernels that convert you to ext4.
NOTE: This FORMATS your partitions, you WILL lose all data held on them. Your phone will NOT boot until you install a ROM ZIP file or restore a nandroid backup. YOU HAVE BEEN WARNED.
CREDIT: @paulobrien from Modaco wrote this for the O2x. I just changed the partition names to match our setup. I left his original banner in there as a result. My change amounts to about 4 bytes. If you have issues, please don't bother him, post here.
This is great...I always hesitate trying out updated or experimental kernels because of the amount of time it takes to nandroid....the cm7 kernel has been really good as of late so I've been sticking with that
Sent from my LG-P999 using XDA App
Hmmm Let the confusing questions begin in 5,4,3,2....
Thanks man!
Sent From My Stock G2x
Reminder: NONE of my kernels and ROMs require the use of this utility. All of my kernels and ROMs are ALL NATIVE EXT3 only mounted as ext4.
faux123 said:
Reminder: NONE of my kernels and ROMs require the use of this utility. All of my kernels and ROMs are ALL NATIVE EXT3 only mounted as ext4.
Click to expand...
Click to collapse
wow, i never knew that. so if we are using one of your cm7 ext4 kernels and then flash a new nightly/kang we could go back to using the stock cm kernel and wouldn't have to necessarily flash your kernel again?
mattyg151 said:
wow, i never knew that. so if we are using one of your cm7 ext4 kernels and then flash a new nightly/kang we could go back to using the stock cm kernel and wouldn't have to necessarily flash your kernel again?
Click to expand...
Click to collapse
Yeap... should be no issues.
Is there a difference between this and just wiping, formating system and data, in cwm?
Sent from my LG-P999 using Tapatalk
billydroid said:
Is there a difference between this and just wiping, formating system and data, in cwm?
Sent from my LG-P999 using Tapatalk
Click to expand...
Click to collapse
cwm is set up to keep whatever format you have at the time you run it, so if you are on ext4, the format command will format to ext4. It makes sense, you wouldn't want to write an ext4 fs onto a partition with vfat on it, for example. Not automatically anyway. And most users wouldn't know what to tell it to use if it were to give you the option. The forum would be full of "What file system do I use?!?!?"... The usual method is to restore a nandroid backup from stock or a stock file system. This is significantly faster.
It is of somewhat limited usefulness as many kernels/roms don't change the filesystem. However, as I switch around a lot with running tests for the cm guys, my own stuff, etc., it's nice to have a fast way to deal with it.
ttabbal said:
cwm is set up to keep whatever format you have at the time you run it, so if you are on ext4, the format command will format to ext4. It makes sense, you wouldn't want to write an ext4 fs onto a partition with vfat on it, for example. Not automatically anyway. And most users wouldn't know what to tell it to use if it were to give you the option. The forum would be full of "What file system do I use?!?!?"... The usual method is to restore a nandroid backup from stock or a stock file system. This is significantly faster.
It is of somewhat limited usefulness as many kernels/roms don't change the filesystem. However, as I switch around a lot with running tests for the cm guys, my own stuff, etc., it's nice to have a fast way to deal with it.
Click to expand...
Click to collapse
Thanks
Sent from my LG-P999 using Tapatalk
EDIT: nvm. looked over the files and got my answer.
Works great thanks for putting this together. Will come in handy.
Sent from my LG-P999 using XDA App
is this utility gonna wipe out all my data (meaning I will have to install all the apps again, setting up my phone again, signing in to google again and stuff) ?
te_quiero_forever_girl said:
is this utility gonna wipe out all my data (meaning I will have to install all the apps again, setting up my phone again, signing in to google again and stuff) ?
Click to expand...
Click to collapse
Yes it will wipe.
Upgrading EXT3 to EXT4 will preserve data but downgrading from EXT4 to EXT3 won't.
With cm going ext4 this is priceless.
Sent from my LG-P999 using xda premium
xsteven77x said:
With cm going ext4 this is priceless.
Sent from my LG-P999 using xda premium
Click to expand...
Click to collapse
A nandroid of ext3 is the same thing also I have installed an ext3 rom over ext4 works great
Sent from my LG-P999 using XDA App
Why do we people want to go back to ext3 when ext4 is much faster and stable than all the other filesystems.
Sent from my LG-P999 using xda premium
I recently flashed 4ext custom recovery and i noticed in there the option to convert my ext3 filesystem to a ext4.. so i put 2 and 2 together and went 4EXT recovery ext4 filesytem..
what i have noticed is that when i nandroid backup/restore my sytem partition backsup/restores very very quick with the new ext4 but my cache and data partitions take absolutely forever. so if anyone would kindly share some light on ext4 filesystems vs ext3 it'd be appreciated..(a tad familiar with linux and such so dont be afraid to get a bit technical )
Look yourself
ext4 ext3
Ahh Tectas we meet again will do a bit more googling next time ...
Thanx for the Links
Sent from my HTC Desire S using XDA App
anonymous_1997 said:
Ahh Tectas we meet again will do a bit more googling next time ...
Thanx for the Links
Sent from my HTC Desire S using XDA App
Click to expand...
Click to collapse
Next time you pay ...... the bill xD
Swyped from my Desire S
Maybe i will xD
Is this just a different type of recovery? If so, is it better to have the clockworkmod? Or is it personal preference? I seen a post somewhere that a guy was using a ext4 rom. Is there roms made for each type of recovery? And can you have ext4 and clockworkmod installed at the same time?
Sent from my Inspire 4G using XDA App
schunter1226 said:
Is this just a different type of recovery? If so, is it better to have the clockworkmod? Or is it personal preference? I seen a post somewhere that a guy was using a ext4 rom. Is there roms made for each type of recovery? And can you have ext4 and clockworkmod installed at the same time?
Sent from my Inspire 4G using XDA App
Click to expand...
Click to collapse
Yes its a different type of recovery that has ext4 support so you can install roms that support ext4 on ext4 partitions. It's personal preference but I use 4ext because it has more options than cwm. You can not have both installed. Also backups from one may not work on the other. Any rom can be flashed with either but only 4ext will allow you to change your partitions to ext4.
I also believe that all ROMs now have EXT4 support. Also be aware that if you're going to use Gene's tool to unroot, you need to be ext3 and not ext4 for it to work. Other then that I agree with gizmoe, a lot more features built in which makes it much more convenient. EXT4 recovery has the check md5 sum built in which is a neat feature I find myself using a lot!
Gizmoe said:
Yes its a different type of recovery that has ext4 support so you can install roms that support ext4 on ext4 partitions. It's personal preference but I use 4ext because it has more options than cwm. You can not have both installed. Also backups from one may not work on the other. Any rom can be flashed with either but only 4ext will allow you to change your partitions to ext4.
Sent from my Inspire 4G using xda premium
Click to expand...
Click to collapse
EXT4 is the default for CM7 on the Ace so I don't think it is limited to 4EXT recovery. The CWM that gets compiled with CM7 has support for EXT4, but I'm not sure if there's an option to toggle this in recovery. I believe it is ony an option in the edify scripting.
MMM-BACONSTRIPS said:
I also believe that all ROMs now have EXT4 support. Also be aware that if you're going to use Gene's tool to unroot, you need to be ext3 and not ext4 for it to work. Other then that I agree with gizmoe, a lot more features built in which makes it much more convenient. EXT4 recovery has the check md5 sum built in which is a neat feature I find myself using a lot!
Click to expand...
Click to collapse
EXT4 is being used by a good many ROM cookers, but EXT3 is the default for anything that is factory HTC. CM7 went to EXT4 (for some unknown reason) and many ROM cookers thought that this was somehow the way to go, but EXT4 is really only useful in high-end multi-core server farms and/or super high-speed (15K +) SCSI disks; neither of which the Inspire has. I've heard that EXT4 is slightly faster at full disk transfers (like an update.zip package) and that's why I believe CM7 moved to this--to speed installation--but, in my opinion, you'll never really see any other benefit on an embedded device with a serial pipe to a rather slow eMMC ROM disk.
hello everybody!
I tried to find an answer on this on the ROMs thread but I couldnt so here it is;
Can I use ICE DS v 4.2 with ext3 only? If so, can I disable afterwards ext4 support?
Thanks
why wouldnt you use ext4? it's an advantage thou. but if you dont want to use ICE DS in future, just revert to ext3 by using 4EXT Recovery.
For the amount of internal memory that our devices have there is no matter whether you use ext3 or ext4. Also the install script of the ROM itself will format the partitions as ext4 upon flashing so there is not much choise actually If you like to go back to ext3 after flashing 4EXT Recovery can do this without losing any data
Sent from my HTC Desire S
Thanks for the quick replies..
When I used a stock ROM with a rooted Desire, I remember discussions about the disadvantages of ext4.
The idea as I understood, was that ext4 was more likely to create filesystem corruption in case of an abnormal shutdown of the phone, eg battery removal, expecially if it used to extend phone memory to the sd card via proper partitioning.
It is exactly the opposite. The ext4 file management will prevent corruption in case that a read/write process gets interrupted by a battery pull or similar. Search Google for ext4 there are all the benefits described on a Wikipedia article.
Sent from my HTC Desire S
amidabuddha said:
It is exactly the opposite. The ext4 file management will prevent corruption in case that a read/write process gets interrupted by a battery pull or similar. Search Google for ext4 there are all the benefits described on a Wikipedia article.
Sent from my HTC Desire S
Click to expand...
Click to collapse
This.
ext4 wouldn't exist, or developed if ext3 is better.