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Re: [libvirt] Re: [Qemu-devel] Changing the QEMU svn VERSION string

From: Gerd Hoffmann
Subject: Re: [libvirt] Re: [Qemu-devel] Changing the QEMU svn VERSION string
Date: Wed, 08 Apr 2009 08:35:09 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b3pre) Gecko/20090324 Fedora/3.0-2.1.beta2.fc11 Thunderbird/3.0b2

On 04/07/09 19:13, Jamie Lokier wrote:
Anthony Liguori wrote:
I still think libvirt should work with versions of QEMU/KVM built from
svn/git though.  I think the only way to do that is for libvirt to relax
their version checks to accommodate suffixes in the form

Ok, but try to stick to a well-defined rule about what suffix means
"later" or "earlier".  In package managers, "1.2.3-rc1" is typically
seen as a later version than "1.2.3" purely due to syntax.

Fedora typically handles this using a leading zero in the 'release' component for pre-final versions, like this: app-1.2.3-0.rc1.fc11 (rc/beta) and app-1.2.3-1.fc11 (final). Likewise for snapshots: app-1.2.3-0.svn${date}.fc11

If you're
consistently meaning "0.11.0-rc1" is earlier than "0.11.0" (final),
that might need to be encoded in libvirt and other wrappers, if they
have any fine-grained version sensistivity such as command line
changes or bug workarounds.

libvirt scans the help text to figure which features are present (checking for as -drive and -uuid cmd line switches for example).


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