Commit Graph

9 Commits

Author SHA1 Message Date
Daniel P. Berrange
652f887144 Allow passing of command line args to LXC container
When booting a virtual machine with a kernel/initrd it is possible
to pass command line arguments using the <cmdline>...args...</cmdline>
element in the guest XML. These appear to the kernel / init process
in /proc/cmdline.

When booting a container we do not have a custom /proc/cmdline,
but we can easily set an environment variable for it. Ideally
we could pass individual arguments to the init process as a
regular set of 'char *argv[]' parameters, but that would involve
libvirt parsing the <cmdline> XML text. This can easily be added
later, even if we add the env variable now

* docs/drvlxc.html.in: Document env variables passed to LXC
* src/conf/domain_conf.c: Add <cmdline> to be parsed for
  guests of type='exe'
* src/lxc/lxc_container.c: Set LIBVIRT_LXC_CMDLINE env var
2011-10-04 14:15:09 +01:00
Dave Allan
e5adda7e6b website: Point main page links to libvirt driver pages
The "libvirt supports:" section on the main page of libvirt.org
contains a list of hypervisors with links that point to the sites of
the underlying virt technologies.  The entry for KVM points to
http://www.linux-kvm.org/, for example.  People coming to libvirt.org
for the first time are likely to know about those sites, and they're
probably interested in how libvirt manages those technologies.  This
patch points those links to the libvirt driver pages instead.  It also
consolidates KVM and QEMU as there is only one libvirt driver page for
them.  Finally, it adds a line about networking support.

v2: incorporate Eric's feedback adding project links to driver pages.

website: Add project links to KVM/QEMU driver page
website: Add project links to Xen driver page
website: Add project links to LXC driver page
website: Add project links to OpenVZ driver page
website: Add project links to UML driver page
website: Add project links to Virtualbox driver page
website: Add project links to ESX driver page
website: Add project links to VMware driver page
2011-07-15 13:19:41 -06:00
Daniel P. Berrange
4e3117ae50 Make LXC container startup/shutdown/I/O more robust
The current LXC I/O controller looks for HUP to detect
when a guest has quit. This isn't reliable as during
initial bootup it is possible that 'init' will close
the console and let mingetty re-open it. The shutdown
of containers was also flakey because it only killed
the libvirt I/O controller and expected container
processes to gracefully follow.

Change the I/O controller such that when it see HUP
or an I/O error, it uses kill($PID, 0) to see if the
process has really quit.

Change the container shutdown sequence to use the
virCgroupKillPainfully function to ensure every
really goes away

This change makes the use of the 'cpu', 'devices'
and 'memory' cgroups controllers compulsory with
LXC

* docs/drvlxc.html.in: Document that certain cgroups
  controllers are now mandatory
* src/lxc/lxc_controller.c: Check if PID is still
  alive before quitting on I/O error/HUP
* src/lxc/lxc_driver.c: Use virCgroupKillPainfully
2011-03-15 12:12:53 +00:00
Serge Hallyn
e9406e9ea7 docs: fix lxc examples
* docs/drvlxc.html.in: Use correct VM name, and mention that
libvirt_lxc might be in an alternate location.
2010-08-24 11:14:46 -06:00
Matthias Bolte
afec7cf1ff Whitespace cleanup for pre-tags on the website 2009-11-16 22:42:13 +01:00
Matthew Booth
c6d5ac174e Cleanup whitespace in docs
This patch is the result of running the following command in the docs
directory: sed -i 's/\t/        /g; s/\s*$//' *.html.in

* docs/*.html.in:convert tabs into 8 spaces and remove trailing whitespace
2009-11-06 16:05:18 +01:00
Daniel Veillard
81e6a22192 Small doc fixes
* src/libvirt.c: fix the doc of virNodeGetFreeMemory to say bytes
* docs/drvlxc.html.in docs/drvlxc.html: fix command used in examples
daniel
2009-04-17 15:34:53 +00:00
Daniel Veillard
a28a644680 * drvlxc.html.in drvlxc.html: some examples from Serge Hallyn
daniel
2009-04-15 20:00:29 +00:00
Daniel P. Berrange
9092c3d491 Split website out into one file per page. APply new layout and styling 2008-04-23 17:08:31 +00:00