Re: [Xen-devel] libxl: cannot start guest

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Campbell writes ("Re: [Xen-devel] libxl: cannot start guest"):
> On Mon, 2012-05-21 at 16:44 +0100, Christoph Egger wrote:
> > libxl: error: libxl_xshelp.c:102:libxl__xs_get_dompath: failed to get
> > dompath for 7: Bad file descriptor
> 
> This is back to the original issue, I think the last couple of mails
> have been something of a tangent since you weren't getting as far as
> this failure.
> 
> I'm not really sure what to suggest here -- something is either closing
> the fd or scribbling over the memory which contains it.

I would strace (on BSD, ktrace?) the process.  That would tell you
whether the fd was being closed and if so when.

If it's not being closed then the fd value is being overwritten and a
gdb hardware watchpoint will find where.

Ian.

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