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0d968ad715
Currently the QEMU stdout/stderr streams are written directly to a regular file (eg /var/log/libvirt/qemu/$GUEST.log). While those can be rotated by logrotate (using copytruncate option) this is not very efficient. It also leaves open a window of opportunity for a compromised/broken QEMU to DOS the host filesystem by writing lots of text to stdout/stderr. This makes it possible to connect the stdout/stderr file handles to a pipe that is provided by virtlogd. The virtlogd daemon will read from this pipe and write data to the log file, performing file rotation whenever a pre-determined size limit is reached. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>