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?
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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
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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.
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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!
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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.
Related
Can someone please, in layman's terms, explain what ext3/4 is? Also, in what scenarios is the CWM with ext4 support needed?
ThADVANCEks
Ext3/4 are different file systems... Our phone is "native" ext3... Ext4 is a little better...(faster/easier to work with?) Im not totaly sure... I know there filing systems but not much difference in performance
But the new nvflash ext4 is so we can make backups with the ext4 kernels that are out (possibly new roms)
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nate420 said:
Ext3/4 are different file systems... Our phone is "native" ext3... Ext4 is a little better...(faster/easier to work with?) Im not totaly sure... I know there filing systems but not much difference in performance
But the new nvflash ext4 is so we can make backups with the ext4 kernels that are out (possibly new roms)
Sent from my LG-P999 using XDA Premium App
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Ahhh, makes sense now. I'm glad I didn't flash an ext4 kernel/rom and get it setup the way I want it and try a backup. that would have sucked. awesome, thanks again.
Yeah I believe EXT4 is faster at read/write operations which should provide better performance for our little blazing beasts, and is also the latest of the EXT file system type. Newer is always better, right?
hi, so i was looking at Leedroid ROM and noticed in the OP it says that you can flash an optional file that will delete everything and format to ext4... this raised a few questions for me since I came from Nexus S.... is the stock sensation formatted in ext3 or 4? Also, don't most of the custom roms upgrade to ext4 or no? and do i have to use this file in the OP of Leedroid's ROM to format the whole system to ext4 before flashing an ext4 rom? I already asked many times in the dev section and nobody would help me out so if someone can help clear this up for me I would appreciate it... thanks!
mattdub1 said:
hi, so i was looking at Leedroid ROM and noticed in the OP it says that you can flash an optional file that will delete everything and format to ext4... this raised a few questions for me since I came from Nexus S.... is the stock sensation formatted in ext3 or 4? Also, don't most of the custom roms upgrade to ext4 or no? and do i have to use this file in the OP of Leedroid's ROM to format the whole system to ext4 before flashing an ext4 rom? I already asked many times in the dev section and nobody would help me out so if someone can help clear this up for me I would appreciate it... thanks!
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Click to collapse
I wish I could chime in more for you but I do know that when flashing LeeDROID it converts to ext4 so I would guess that it isn't that way to start.
From Terminal Emulator, you can type in "mount" without the quotes and it'll tell you which file system is used in each "mount" (analogous to partition, if you're a windows user).
I just did it on my stock sensation 4G (TMOUS) and it's mostly, if not all, EXT4 already. Unless I'm reading it wrong.
thanks for the response guys!
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?
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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?
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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.
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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.
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xsteven77x said:
With cm going ext4 this is priceless.
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A nandroid of ext3 is the same thing also I have installed an ext3 rom over ext4 works great
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Why do we people want to go back to ext3 when ext4 is much faster and stable than all the other filesystems.
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I recently flashed arhd which replaced my cwm recovery with 4ext. Should I need to go back to cwm, how would I do it? I presume I can't just restore a nandroid backup.
You will be able to restore a backup.
You go back to clockwork recovery if you prefer that over 4ext but it isn't a must.
Either you flash it as a zip or as image by using fastboot.
Sent from my awesome HTC!
gonintendo said:
I recently flashed arhd which replaced my cwm recovery with 4ext. Should I need to go back to cwm, how would I do it? I presume I can't just restore a nandroid backup.
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Click to collapse
Cwm backups (since cwm 5.x.x) and 4ext are compatible (not sure about cwm restoring 4ext backups though).
Sent from my HTC Sensation 4G using XDA App
gonintendo said:
I recently flashed arhd which replaced my cwm recovery with 4ext. Should I need to go back to cwm, how would I do it? I presume I can't just restore a nandroid backup.
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Click to collapse
DL Clockwork manager from market....Open it, then download CWR for your phone, it will replace 4EXT. May I ask why you would do that though, wouldn't you prefer to convert to EXT4 instead?
Ace42 said:
DL Clockwork manager from market....Open it, then download CWR for your phone, it will replace 4EXT. May I ask why you would do that though, wouldn't you prefer to convert to EXT4 instead?
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Click to collapse
What are the advantages of ext4 over whatever filesystem I'm on right now? I like cwm because I can name my backups right from my rom manager app. (I know you can just rename them after the fact, but it's more convenient that way lol)
I thought that CWR supported ext4 which is HTC uses for Android.
Sent from my Sensation using XDA App
I have cwm and 4ext. When I boot into recovery its cwm. Is 4ext just another Rom recovery manager?
Sent from my HTC Sensation Z710e using xda premium
Yes
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moshe22 said:
I thought that CWR supported ext4 which is HTC uses for Android.
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I am not sure about this when referencing the current Generation(S3), on the previous Gen(S2) HTC used EXT3, Sammy had RFS(on all Galaxy). Maybe HTC uses EXT4 on Senny/Evo 3D by default, but that would make 4EXT rec useless; so I feel sensation has EXT3. And EXT4 is much faster and has journaling, these increase I/O speed compared to RFS or EXT3. However everything has to be EXT4 to see the true speed(ROM, system partitions /system /cache /data , kernel support). And I forgot to mention that I am not sure if CWR on Sens uses EXT4, on previous phone it did no converting, but I can look @ the CWR changelog.
Sorry for bumping thread!
Ace42 said:
I am not sure about this when referencing the current Generation(S3), on the previous Gen(S2) HTC used EXT3, Sammy had RFS(on all Galaxy). Maybe HTC uses EXT4 on Senny/Evo 3D by default, but that would make 4EXT rec useless; so I feel sensation has EXT3. And EXT4 is much faster and has journaling, these increase I/O speed compared to RFS or EXT3. However everything has to be EXT4 to see the true speed(ROM, system partitions /system /cache /data , kernel support). And I forgot to mention that I am not sure if CWR on Sens uses EXT4, on previous phone it did no converting, but I can look @ the CWR changelog.
Sorry for bumping thread!
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Click to collapse
RFS should be censored on these forums. Makes me shudder just thinking about it. (I do NOT miss my galaxy s)
moshe22 said:
I thought that CWR supported ext4 which is HTC uses for Android.
Sent from my Sensation using XDA App
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Click to collapse
Ext4 is a filesystem. 4ext is a recovery.
Sent from my HTC Sensation 4G using XDA App
i have just noticed this and i think 4ext is better than cwm reason been is its much faster than cwm and you can skin it and backups from cwm do work with 4ext just tried
4ext recovery is just faster, themeble and its easier to flash things. Since there are less no no no etc. For the full feature list visit madmaxx82 4EXT thread.
I recently installed WCX Illuminati [3.5 Sense Based on 1.22.461.2 (Quicksall Rcmix kernel v12 )overclocked to 1536 by default.].
While the ROM is not advertised to be (as far as I can tell) an EXT4 ROM, I noticed during the install the system was formatted as EXT4.
I'll like to experiment with some other ROMs that are EXT3. Do I have to go through any special steps to go back to an EXT3 ROM after running an EXT4 ROM, I can I just flash the new ROM though CM Recovery?
Thanks.
Four-Fifty-X said:
I recently installed WCX Illuminati [3.5 Sense Based on 1.22.461.2 (Quicksall Rcmix kernel v12 )overclocked to 1536 by default.].
While the ROM is not advertised to be (as far as I can tell) an EXT4 ROM, I noticed during the install the system was formatted as EXT4.
I'll like to experiment with some other ROMs that are EXT3. Do I have to go through any special steps to go back to an EXT3 ROM after running an EXT4 ROM, I can I just flash the new ROM though CM Recovery?
Thanks.
Click to expand...
Click to collapse
There are no steps for that, just flash the new Rom. But make sure to flash CWM recovery first as the illuminati Rom uses stock recovery. Go to Rom manager and flash recovery. Once you have done that flash the Rom you want.
Sent from my Inspire 4G using XDA App
glevitan said:
There are no steps for that, just flash the new Rom. But make sure to flash CWM recovery first as the illuminati Rom uses stock recovery. Go to Rom manager and flash recovery. Once you have done that flash the Rom you want.
Sent from my Inspire 4G using XDA App
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Click to collapse
Good. Thanks.
Sent from my HTC Inspire 4G using XDA App
I was wondering this myself also. But I want to ask a little deeper question.
Say I have 2 ROMS. One that is ext3 and the other that is ext4. Each one formats the system appropriately when installed fresh. But say I have a NAND backup of the ext3 ROM on my card and I have the ext4 ROM installed on the phone at the present. Can I restore the ext3 ROM without doing anything other than the normal wiping using clockwork? Or would I have to reinstall the ext3 ROM fresh to get the proper format and then restore the backup?
And would it be the same going the other direction too?
Agoattamer said:
I was wondering this myself also. But I want to ask a little deeper question.
Say I have 2 ROMS. One that is ext3 and the other that is ext4. Each one formats the system appropriately when installed fresh. But say I have a NAND backup of the ext3 ROM on my card and I have the ext4 ROM installed on the phone at the present. Can I restore the ext3 ROM without doing anything other than the normal wiping using clockwork? Or would I have to reinstall the ext3 ROM fresh to get the proper format and then restore the backup?
And would it be the same going the other direction too?
Click to expand...
Click to collapse
I guess but not sure that when you do a wipe to install a new Rom your partitions are formatted and ifvyo don't use an ext4 Rom then you will have just ext3.
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Agoattamer said:
I was wondering this myself also. But I want to ask a little deeper question.
Say I have 2 ROMS. One that is ext3 and the other that is ext4. Each one formats the system appropriately when installed fresh. But say I have a NAND backup of the ext3 ROM on my card and I have the ext4 ROM installed on the phone at the present. Can I restore the ext3 ROM without doing anything other than the normal wiping using clockwork? Or would I have to reinstall the ext3 ROM fresh to get the proper format and then restore the backup?
And would it be the same going the other direction too?
Click to expand...
Click to collapse
I'm not sure how ClockworkMod handles this but I've been using 4EXT Recovery for a few months and it will automatically determine which format the ROM you're flashing uses and convert if necessary. Works for both fresh ROM flashes or backups.
I've been running ARHD and wanted to pull something off of the stock ROM backup I had. When I restored the stock nandroid, 4EXT formatted the existing ext4 partitions to ext3 and restored the backup. Then when I restored ARHD it automatically switched 'em back to ext4.
Thanks for the responses guys. Still looking for someone to answer positively on this last question. I don't want to be the someone asking about how to get my phone to boot when it is stuck on the white screen. lol.
Agoattamer said:
Thanks for the responses guys. Still looking for someone to answer positively on this last question. I don't want to be the someone asking about how to get my phone to boot when it is stuck on the white screen. lol.
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i'm with the other guy, i use 4EXT. but when making a backup it says "writing ext4 data" (or something along those lines) for each partition that uses ext4. it does the same for ext3.
i would be inclined to believe that CWM does the same thing and changes the file system accordingly. one way to check if it records the file system type would be to look at the tar files. go to sdcard/clockworkmod/backup/whatever-you-named-your-backup that folder should contain, at a minimum, the following files: system.xxxx.tar, data.xxxx.tar, boot.img, and an md5 file. the xxxx should be the file system that particular backup uses.
EDIT: that is assuming that CWM uses tar backups and not yaffs2. not sure how those backups are structured. either way the filesystem should still get recorded some how.
i think you'd be fine just restoring. there would have been massive amounts of new threads popping up saying "OMGIDIDARESTOREANDMYPHONEISFUX0RED!!!!" if anyone had any problems once ext4 showed its face. know what i mean?
as an alternative. why not just flash 4EXT Recovery? since you KNOW it does what you're asking? kinda takes the guess work out... lol