Re: [Xen-devel] [PATCH 5 of 9] libxl: only use interactive PyGrub mode when a console is attached

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Roger Pau Monné writes ("Re: [Xen-devel] [PATCH 5 of 9] libxl: only use 
interactive PyGrub mode when a console is attached"):
> I've digged a little more into this issue, and found out that NetBSD
> ptys have a 1024 buffer limit, and when this limit is hit, the select
> from libxl_bootloader:211 blocks and no more data is writen to
> xenconsole_fd and no more data is read from bootloader_fd (because
> bootloader_buf contains data), which of course blocks the execution of
> pygrub. Since the xenconsoled_fd pty is not monitored by xenconsole,
> nobody is draining data from it. I don't know the best way to solve
> this, but it seems like somebody should read the data from
> xenconsoled_fd and dispose it if there is no console attached.

That sounds unfortunate.  I agree with you.

Ian.

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