search for: incr_cmdline_size

This set of 10 patches removes the need for any vmchannel implementation, although we can still choose to use vmchannel if we want. In this so-called "null vmchannel" configuration, the appliance connects directly to a port on the library. The exact method is described in patch 9/10. This method still requires SLIRP (user mode networking) so it is not a panacea, because recent

...ell_unquoted (g, QEMU_OPTIONS); + + /* Add any qemu parameters. */ + for (qp = g->qemu_params; qp; qp = qp->next) { + add_cmdline (g, qp->qemu_param); + if (qp->qemu_value) + add_cmdline (g, qp->qemu_value); + } + /* Finish off the command line. */ incr_cmdline_size (g); g->app.cmdline[g->app.cmdline_size-1] = NULL; -- 1.8.1.4

v1 was here: https://www.redhat.com/archives/libguestfs/2013-August/msg00005.html This now works, to some extent. The main problem now is that devices are named /dev/ubd[a-] which of course confuses everything. I'm thinking it may be easier to add a udev rule to rename them. Rich.

This is a User-Mode Linux backend for libguestfs. You can select it by doing: export LIBGUESTFS_BACKEND=uml export LIBGUESTFS_QEMU=/path/to/vmlinux Note we're reusing the 'qemu' variable in the handle for convenience. QEmu is not involved when using the UML backend. This almost works. UML itself crashes when the daemon tries to connect to the serial port. I suspect it's

...ror; @@ -734,6 +738,19 @@ guestfs__version (guestfs_h *g) return r; } +int +guestfs__set_trace (guestfs_h *g, int t) +{ + g->trace = !!t; + return 0; +} + +int +guestfs__get_trace (guestfs_h *g) +{ + return g->trace; +} + /* Add a string to the current command line. */ static void incr_cmdline_size (guestfs_h *g) -- 1.6.2.5

These assorted patches end up with adding virtio-scsi support to libguestfs. It passes libguestfs-test-tool, but I haven't yet tried to run the full set of tests. In theory > 26 devices can be added, but it's likely that certain parts of the daemon will break if you actually try this. This of course needs to be fixed. Thanks Paolo Bonzini for invaluable help. Rich.

More comprehensive support for virtio-scsi. Passes all the tests. Rich.