RE: [Xen-devel] blktap2: need more than 3 values to unpack

[Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>]

> Then I might be able to help, but I'm not sure how to 
> reproduce it.  If 
> you send a log file and config for this latter error I'll 
> take a look. 

Here ya go.

Thanks,
Dan

> -----Original Message-----
> From: Dutch Meyer [mailto:dmeyer@xxxxxxxxx]
> Sent: Monday, June 01, 2009 8:32 PM
> To: Dan Magenheimer
> Cc: Xen-Devel (E-mail)
> Subject: Re: [Xen-devel] blktap2: need more than 3 values to unpack
> 
> 
> The tap:aio:/pathto/file.img syntax that you're using in your 
> config was 
> changed before blktap2 was introduced. 
> tap:tapdisk:aio:/pathto/file.img is 
> apparently the correct syntax now, though the README didn't 
> get updated to 
> reflect this.  Our blktap2 documentation is no better - I'll try to 
> remedy that this week.
> 
> 
> If you're still seeing this error:
>     "Error: 'file' object has no attribute 'find'"
> 
> Then I might be able to help, but I'm not sure how to 
> reproduce it.  If 
> you send a log file and config for this latter error I'll 
> take a look. 
> Yang seems to be reporting the same thing in another thread.
> 
> --Dutch
> 
> On Mon, 1 Jun 2009, Dan Magenheimer wrote:
> 
> > Hmmm... trying blktap2 for the first time, using 19682.
> > I had thought that the syntax hadn't changed, but I am
> > getting what appears to be a parsing error on my vbd line.
> >
> > "ValueError: need more than 3 values to unpack"
> >
> > Thinking maybe that "w!" was the culprit, I changed
> > it to "w" with no change in result.
> >
> > Looking at the python code that generated the error,
> > I tried to figure out the syntax by experimentation
> > but without luck.  I tried:
> >
> > tap:tapdisk:aio:/pathto/file.img
> >
> > but got "Error: 'file' object has no attribute 'find'"
> >
> > To see if I could use the old blktap, I tried
> >
> > tap:tapdisk:ioemu:/pathto/file.img
> >
> > but got the dreaded "Error: Device 768 (tap) could not be
> > connected. Hotplug scripts not working"
> >
> > Am I missing something in the syntax for blktap2?
> > Is there a how-to or readme I didn't find?  Or
> > is there some required dependency I don't know about
> > that is missing?
> >
> > I thought maybe I had a bad install, so rebuilt and
> > reinstalled with the same result.
> >
> > xend.log and config file attached.
> >
> > Thanks,
> > Dan
> >
> > P.S. I am trying blktap2 because both blktap and
> > file-backed fail.  Blktap sometimes reads garbage
> > from the file and
> 
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