Bug 31888 – Support XZ-compressed kernel images

Bug 31888 - Support XZ-compressed kernel images


Summary:	Support XZ-compressed kernel images

Status:	CLOSED WONTFIX

Product:	UCS
Classification:	Unclassified
Component:	Virtualization - Xen
Version:	UCS 3.0
Hardware:	Other Linux

Importance:	P5 enhancement (vote)
Target Milestone:	UCS 3.x
Assigned To:	UCS maintainers
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Reported:	2013-07-04 09:20 CEST by Moritz Muehlenhoff
Modified:	2023-06-28 10:46 CEST (History)
CC List:	2 users (show)

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Description Moritz Muehlenhoff

2013-07-04 09:20:41 CEST

Our Xen lacks support for Xz-compressed kernel images. In Debian the standard kernel images are xz-compressed starting with Linux 3.6. For our upcoming 3.10 kernel we'll continue to use Gzip, but it would be useful to support this; otherwise current Debian testing and distributions using the Debian kernel cannot be booted in our Xen any longer (Ubuntu uses it's own kernel: I've checked Ubuntu 13.04 and it's using Gzip compression).

In Debian XZ support was added to Xen in 
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=695056

In Xen upstream support was added in 4.1.5:
http://www.xenproject.org/downloads/xen-archives/supported-xen-41-series/xen-415.html

Comment 1 Philipp Hahn

2013-07-08 11:32:50 CEST

Support for additional compression formats is appreciated, but we would still need to force Amazon to update its version pygrub, too, before we can switch from GIP to XZ. (good luck)
<http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/UserProvidedkernels.html>

Comment 2 Philipp Hahn

2017-04-21 16:24:04 CEST

UCS-3.x is OoM.
Xen is OoM.