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ext4 support

Posted: Wed Jan 20, 2010 7:12 pm
by zmdmw52
I have just installed the latest (beta) version of partimage (0.6.9) on Ubuntu 9.04.

Is the ext4 file system supported by this version ?
If not supported, is it planned in a future release of partimage ?

Thanks,

Posted: Wed Jan 20, 2010 9:24 pm
by feffer
From the Partimage docs Under Limitations
Warning: Partimage does not support ext4 and btrfs filesystems. If you need an ext4 / btrfs support or if you need modern features (checksumming, multi-thread compression, encryption, flexibility in the size) you should try FSArchiver.

btw, I believe FSArchiver is mainly (or only) a linux tool.

EXT4?

Posted: Sat Mar 12, 2011 3:06 pm
by candtalan
It would be really good to have support for EXT4, it is in common use now.

thanks

Re: EXT4?

Posted: Tue Mar 15, 2011 9:05 am
by Hartmut
candtalan wrote:It would be really good to have support for EXT4, it is in common use now.

thanks
Well - it is open source, so you're very welcome to code the ext4 support ;)
A description can be found at
https://ext4.wiki.kernel.org/index.php/Main_Page
Especially the Extent-based design is the hugest change.

Posted: Tue Mar 29, 2011 9:41 am
by aidfarh
partimage works perfectly well with the ext4 partitions on my Ubuntu box. How is that so?

Posted: Tue Mar 29, 2011 10:03 am
by Hartmut
aidfarh wrote:partimage works perfectly well with the ext4 partitions on my Ubuntu box. How is that so?
Is it a new partition, or upgraded from ext3?
Did you backup and restore?
EXT4 is somehow an extended EXT3, but with some new features. So therefore it could (from partimage) be seen as a "strange" EXT3. But it is dangerous, because partimage doesn't have any knowledge of the new strukture special to EXT4 - don't use it at an essential and productive system!

Posted: Wed Dec 07, 2011 6:05 pm
by golimar
Wikipedia says (http://en.wikipedia.org/wiki/Ext4) that

"The ext3 file system is partially forward compatible with ext4, that is, an ext4 filesystem can be mounted as an ext3 partition. However, if the ext4 partition uses extents (a major new feature of ext4), then the ability to mount the file system as ext3 is lost."

I guess you weren't using extents in your system, can you check it?
aidfarh wrote:partimage works perfectly well with the ext4 partitions on my Ubuntu box. How is that so?

Posted: Tue Dec 13, 2011 7:12 am
by carol_walker
The EXT4 file-system option is listed next to the other file-systems supported for installation by Ubuntu. The EXT4 support for the GRUB boot-loader in Ubuntu 9.04 was already committed and is in place.