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Re: [Qemu-devel] [PATCH] move 'unsafe' to end of caching modes in help
From: |
Luiz Capitulino |
Subject: |
Re: [Qemu-devel] [PATCH] move 'unsafe' to end of caching modes in help |
Date: |
Thu, 22 Jul 2010 10:45:58 -0300 |
On Wed, 21 Jul 2010 15:55:28 -0500
Anthony Liguori <address@hidden> wrote:
> On 07/21/2010 03:32 PM, Bruce Rogers wrote:
> > Libvirt parses qemu help output to determine qemu features. In particular
> > it probes for the following: "cache=writethrough|writeback|none". The
> > addition of the unsafe cache mode was inserted within this string, as
> > opposed to being added to the end, which impacted libvirt's probe.
> > Unbreak libvirt by keeping the existing cache modes intact and add
> > unsafe to the end.
> >
> > This problem only manifests itself if a caching mode is explicitly
> > specified in the libvirt xml, in which case older syntax for caching is
> > passed to qemu, which it no longer understands.
> >
> > Signed-off-by: Bruce Rogers<address@hidden>
> >
>
> Errr, libvirt is still doing this?
>
> This comes up frequently and it's a real PITA. Help text is not a
> feature probing interface. This is a libvirt bug and it needs to be
> fixed in libvirt.
IMHO, we should try to not break it as much as we can while QMP
isn't stable yet, just like we do for the user monitor.
- Re: [Qemu-devel] [PATCH] move 'unsafe' to end of caching modes in help, (continued)
- Re: [Qemu-devel] [PATCH] move 'unsafe' to end of caching modes in help, Markus Armbruster, 2010/07/27
- Re: [Qemu-devel] [PATCH] move 'unsafe' to end of caching modes in help, Avi Kivity, 2010/07/26
- Re: [Qemu-devel] [PATCH] move 'unsafe' to end of caching modes in help, Anthony Liguori, 2010/07/26
- Re: [Qemu-devel] [PATCH] move 'unsafe' to end of caching modes in help, Avi Kivity, 2010/07/26
- [Qemu-devel] Re: [PATCH] move 'unsafe' to end of caching modes in help, Juan Quintela, 2010/07/26
- Re: [Qemu-devel] [PATCH] move 'unsafe' to end of caching modes in help, Kevin Wolf, 2010/07/27
Re: [Qemu-devel] [PATCH] move 'unsafe' to end of caching modes in help,
Luiz Capitulino <=
Re: [Qemu-devel] [PATCH] move 'unsafe' to end of caching modes in help, Daniel P. Berrange, 2010/07/27