On Thu, Apr 28, 2016 at 12:05:12PM +0200, Michal Privoznik wrote:
This is kind of a hacky approach to the following problem, but so far I am unable to come up with anything better. On some occasions (esp. when dealing with regular files) libvirt_iohelper is spawned to prefetch data for us. We will then have a pipe then for reading the data from it. This does not fit in our sparse stream implementation as one simply doesn't lseek() over a pipe. Until this is resolved, let's suppress use of the IO helper and read data from FD directly.
This doesn't really fly - the problem is that with regular files, poll() on the FD will always return ready, even if the read or write will block in I/O. So by nomt using the iohelper this is going to cause our main loop to block on I/O for streams. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|