[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH for-4.5] xl: print message to stdout when (!debug && dryrun)
On Sat, Dec 13, 2014 at 06:42:09PM +0000, Wei Liu wrote: > On Sat, Dec 13, 2014 at 01:37:16PM -0500, Konrad Rzeszutek Wilk wrote: > > On Sat, Dec 13, 2014 at 04:54:05PM +0000, Wei Liu wrote: > > > In commit d36a3734a ("xl: fix migration failure with xl migrate > > > --debug"), message is printed to stderr for both debug mode > > > and dryrun mode. That caused rdname() in xendomains fails to parse > > > domain name since it's expecting input from xl's stdout. > > > > > > So this patch separates those two cases. If xl is running in debug mode, > > > then message is printed to stderr; if xl is running in dryrun mode and > > > debug is not enabled, message is printed to stdout. This will fix > > > xendomains and other scripts that use "xl create --dryrun", as well as > > > not re-introducing the old bug fixed in d36a3734a. > > > > > > Reported-by: Mark Pryor <tlviewer@xxxxxxxxx> > > > Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx> > > > Cc: M A Young <m.a.young@xxxxxxxxxxxx> > > > Cc: Ian Campbell <ian.campbell@xxxxxxxxxx> > > > Cc: Konrad Wilk <konrad.wilk@xxxxxxxxxx> > > > --- > > > This is a regression, and this bug is so subtle that's a bit hard to > > > debug from user's point of view. So I think this should go into 4.5. > > > > > > Mark posted a workaround in > > > <104017455.78913.1418434454763.JavaMail.yahoo@xxxxxxxxxxxxxxxxxxxxxxxxxxx> > > > but to be honest I don't think it's nice to have everyone patch their > > > scripts in order to work around this. > > > --- > > > tools/libxl/xl_cmdimpl.c | 4 +++- > > > 1 file changed, 3 insertions(+), 1 deletion(-) > > > > > > diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c > > > index 3737c7e..0a5f7c8 100644 > > > --- a/tools/libxl/xl_cmdimpl.c > > > +++ b/tools/libxl/xl_cmdimpl.c > > > @@ -2472,8 +2472,10 @@ static uint32_t create_domain(struct domain_create > > > *dom_info) > > > } > > > } > > > > > > - if (debug || dom_info->dryrun) > > > + if (debug) > > > printf_info(default_output_format, -1, &d_config, stderr); > > > + if (!debug && dom_info->dryrun) > > > > Could this 'else if (dom_info->dry_run)' ? > > > > I know that semantically it is exactly the same as the 'if (!debug ..)' but > > it just "feels" more proper? Thought since you are the maintainer in that > > area - your opinion on how you want to do that is of course authoritive. > > > > I don't have strong preference on this. I just happened to type in > whatever style that flowed though my mind at that particular point. If > Ian and you both feel strongly about this I can certainly resend. :-) Lets wait to see what Ian says (or what he ends up checking in). > > Wei. > > > Regardless, > > > > Release-Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> > > > + printf_info(default_output_format, -1, &d_config, stdout); > > > > > > ret = 0; > > > if (dom_info->dryrun) > > > -- > > > 1.7.10.4 > > > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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