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At the vhostmd side virtio channels are Unix domain sockets from QEMU
which are created during a VM start and removed when the VM is stopped.
Basically this implementation
- monitors a directory for new virtio channels
- for valid IDs, also known by libvirtd, it connects to the UDS
- buffers VM/HOST metrics and handles request/response on the sockets
It provides the functions
virtio_init()
init function of virtio layer
virtio_run()
the start_routine for the virtio-thread to handle the virtio based
communication
virtio_metrics_update()
called for each VM/HOST metrics update to update the virtio internal
metrics buffer.
virtio_stop()
stop the virtio-thread
Old, crufty code that no longer compiles and should be
removed from the sources. libvirt or custom "actions"
should be used to gather metrics.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
The xenctrl interface has changed over the years, causing
the associated code in vhostmd to no longer compile. Instead
of trying to get this low-level xen interface working again,
simply remove it from vhostmd. libvirt or custom "actions"
should be used to gather metrics.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Hi all,
The attached patch against v0.4 fixes the build when --enable-xenctrl is used.
If this configure option is used vhostmd does not link against libvirt or
virt-util.o, but a few bits of code were assuming that these were always linked in.
Please could you consider this patch for inclusion in the vhostmd project.
Regards,
Alex Zeffertt
Fix build when "./configure --enable-xenctrl" is used.
This option disables the use of libvirt. Instead libxc gets used to
find out stuff about VMs.
If this option is used then virt-util.c does not get built. This
patch removes the linker dependencies on virt-util.o when
--enable-xenctrl is used.
Signed-off-by: <alex.zeffertt@eu.citrix.com>
If ./configure --without-xenstore, then the dependency on
xenstore is removed. Attempts to use xenstore will result
in a runtime error.
The default is still that xenstore is enabled.
