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usgs
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Post subject: ext4 and ext3 compatibility
 Posted: 03.10.2010, 03:45
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Joined: 2010-10-03
Posts: 21
Status: Offline
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In one desktop tower I'll install Aptosid using ext4. In another desktop tower I have MEPIS 8.5 installed and I use ext3 in this computer. Will I have any compatibility problems if I transfer files either way between these two computers? If there are incompatibilties between ext3 and ext4, how do I work around them in transferring files either way between the two computers?
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devil
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Post subject: RE: ext4 and ext3 compatibility
Posted: 03.10.2010, 05:23
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Joined: 2010-08-26
Posts: 491
Location: Berlin
Status: Offline
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there is no incompatibilities. both are basically ext2 + journaling.
you could even convert ext3 to ext4.
greetz
devil |
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DonKult
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Post subject: RE: ext4 and ext3 compatibility
Posted: 03.10.2010, 06:24
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Team Member
Joined: 2010-09-02
Posts: 416
Status: Offline
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Don't worry, even if they would be incompatible (but they are not, ext4 can read ext3 without problems for example) this doesn't make a difference for moving/copying files around.
It only makes a difference in cases like in which two different systems (e.g. aptosid and mepis) should read/write on the same partition, e.g. an usbstick. For reading/writing these systems need support for the filesystem the usbstick is formated in. |
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MfG. DonKult
"I never make stupid mistakes. Only very, very clever ones." ~ The Doctor
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mikekgr
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Post subject: Re: RE: ext4 and ext3 compatibility
Posted: 03.10.2010, 17:36
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Joined: 2010-09-12
Posts: 7
Location: Salamina Island / Greece
Status: Offline
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devil wrote:
there is no incompatibilities. both are basically ext2 + journaling.
you could even convert ext3 to ext4.
greetz
devil
Hello devil,
would you like to guide me how to convert my ext3 installation to ext4? Is there any drawback in this process??
Thanks and best regards |
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Post subject: Re: RE: ext4 and ext3 compatibility
Posted: 03.10.2010, 18:23
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Team Member
Joined: 2010-08-26
Posts: 168
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mikekgr wrote:
would you like to guide me how to convert my ext3 installation to ext4? Is there any drawback in this process??
Just follow the Debian Wiki |
_________________
Why do strong arms fatigue themselves with frivolous dumbbells?
To dig a vineyard is worthier exercise for men.
Marcus Valerius Martialis, römischer Satiriker und Epigrammdichter
Será que o diabo perdeu a virgindade?
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mylo
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Post subject: RE: Re: RE: ext4 and ext3 compatibility
Posted: 03.10.2010, 21:45
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Joined: 2010-09-11
Posts: 116
Location: Wiesbaden, Germany
Status: Offline
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just my experience:
I have two equal hd's à 250 GB, three data partitions on each, one bears aptosid and swap additionally.
I started converting smoothly with gparted, have actually one partition per disk on ext 4, the rest is awaiting to be converted from ext 3 to 4 by time.
No probs so far! |
_________________
Regards
mylo
Linux 3.1-6.slh.1-aptosid-amd64 x86_64[2010-03 Ἀπάτη (201012262151)]
Intel Core2 Duo E6550 @ Cache/Ram 4MB/4GB nVidia G72 7300 nouveau 2*250GB
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mikekgr
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Post subject: RE: Re: RE: ext4 and ext3 compatibility
Posted: 04.10.2010, 10:22
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Joined: 2010-09-12
Posts: 7
Location: Salamina Island / Greece
Status: Offline
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Thanks guys for the guide and the experience you have.
Best Regards
Mike Kranidis |
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browe
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Post subject: RE: Re: RE: ext4 and ext3 compatibility
Posted: 04.10.2010, 14:22
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Joined: 2010-09-12
Posts: 140
Location: Canada
Status: Offline
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As everyone has said, ext3 & ext4 work fine together and preserve all file permissions. Mepis also supports ext4 and I encourage you to upgrade to it. One way to try it out without commiting to ext4 is to edit /etc/fstab and replace ext3 with ext4 (edit the file then force a reboot with filesystem check).
Code:
# pico /etc/fstab
# touch /forcefsck
# shutdown -r now
I used this method on my machine and it worked flawlessly. This allows you to test it and if there are any issues change it back to ext3. See this article for more info:
http://wiki.archlinux.org/index.php/Ext4 |
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Lanzi
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Post subject: RE: Re: RE: ext4 and ext3 compatibility
Posted: 04.10.2010, 14:34
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Joined: 2010-09-11
Posts: 126
Location: Hessen
Status: Offline
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also very positive feedback from me.
ext4 is running here since January. No problems at all. |
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