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Home » General » Support » Has ext4 (prod) been backported to 2.6.27? (OpenVZ sources 2.6.27-briullov.1 on Gentoo only includes ext4dev)
icon5.gif  Has ext4 (prod) been backported to 2.6.27? [message #37863] Wed, 28 October 2009 18:35 Go to next message
VinzC is currently offline  VinzC
Messages: 14
Registered: December 2008
Junior Member
Hi.

I've installed OpenVZ on a Gentoo server. I formated my partitions with EXT4 (production) but I didn't pay attention that the LiveCD was running a recent kernel (2.6.30) for which EXT4 is in production. OpenVZ sources 2.6.27 (briullov), which are marked stable in Gentoo, only include the development version of EXT4 so none of my partitions can be mounted.

Does anyone know if there's a patch to back port ext4 onto 2.6.27 for OpenVZ?

EDIT: I really would like to use EXT4 especially because of the enhancements it provides. However I guess it might be not such a good idea...

Thanks for any hint or suggestion.

Vince C.

[Updated on: Thu, 29 October 2009 08:48]

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Re: Has ext4 (prod) been backported to 2.6.27? [message #37881 is a reply to message #37863] Thu, 29 October 2009 15:09 Go to previous messageGo to next message
jeffa is currently offline  jeffa
Messages: 8
Registered: September 2006
Junior Member
Same problem with Fedora 11 which uses ext4 by default. Had to start over (repartition, reformat) with ext3 (no easy way to convert). Also I tried specifying the fs as ext4dev in fstab before attempting to boot the 2.6.27 kernel, and tried building a custom initrd image.

A backport would be nice...

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Re: Has ext4 (prod) been backported to 2.6.27? [message #37884 is a reply to message #37881] Thu, 29 October 2009 21:54 Go to previous messageGo to next message
batfastad is currently offline  batfastad
Messages: 15
Registered: September 2009
Location: London, UK
Junior Member
Ext4 can be mounted as ext3
http://en.wikipedia.org/wiki/Ext4#Features

But that might not be so clever in a production environment... I'm no FS or Linux expert so can't comment on the reliability of doing that.

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Re: Has ext4 (prod) been backported to 2.6.27? [message #37885 is a reply to message #37863] Thu, 29 October 2009 22:33 Go to previous messageGo to next message
Gnampf
Messages: 2
Registered: October 2009
Location: D-Hamburg
Junior Member
Quote:
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'd expect that the feature is in use

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Re: Has ext4 (prod) been backported to 2.6.27? [message #37893 is a reply to message #37863] Fri, 30 October 2009 11:22 Go to previous message
VinzC is currently offline  VinzC
Messages: 14
Registered: December 2008
Junior Member
Thank you for your comments. I've finally made a full backup and reformated with XFS. That went fine.

Vince C.

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