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Michal Privoznik 5fe66ea3bf sanlock: Properly init io_timeout
https://bugzilla.redhat.com/show_bug.cgi?id=1292984

Hold on to your hats, because this is gonna be wild.

In bd3e16a3 I've tried to expose sanlock io_timeout. What I had
not realized (because there is like no documentation for sanlock
at all) was very unusual way their APIs work. Basically, what we
do currently is:

    sanlock_add_lockspace_timeout(&ls, io_timeout);

which adds a lockspace to sanlock daemon. One would expect that
io_timeout sets the io_timeout for it. Nah! That's where you are
completely off the tracks. It sets timeout for next lockspace you
will probably add later. Therefore:

   sanlock_add_lockspace_timeout(&ls, io_timeout = 10);
   /* adds new lockspace with default io_timeout */

   sanlock_add_lockspace_timeout(&ls, io_timeout = 20);
   /* adds new lockspace with io_timeout = 10 */

   sanlock_add_lockspace_timeout(&ls, io_timeout = 40);
   /* adds new lockspace with io_timeout = 20 */

And so on. You get the picture.
Fortunately, we don't allow setting io_timeout per domain or per
domain disk. So we just need to set the default used in the very
first step and hope for the best (as all the io_timeout-s used
later will have the same value).

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-09-29 16:59:11 +02:00
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docs conf: add xen type for channels 2016-09-27 15:15:03 -06:00
examples apparmor: move qemu-bridge-helper to libvirtd profile 2016-09-26 13:23:01 +02:00
gnulib build: drop hack for old mingw ssize_t 2016-07-12 08:57:13 -06:00
include/libvirt Add missing 'extern' for VIR_EXPORT_VAR macro 2016-09-20 12:55:28 +01:00
m4 m4: Check for sanlock_write_lockspace 2016-09-29 16:59:11 +02:00
po cpu: Rework cpuUpdate 2016-09-22 15:40:09 +02:00
src sanlock: Properly init io_timeout 2016-09-29 16:59:11 +02:00
tests qemu: Only use memory-backend-file with NUMA if needed 2016-09-29 15:43:13 +02:00
tools vsh: Write out history on "quit" or "exit" in interactive mode 2016-09-29 07:00:28 -04:00
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Makefile.nonreentrant cfg.mk: use a single regex for all non-reentrant functions 2016-06-15 15:00:56 +02:00
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autogen.sh maint: improve usage of autogen's --no-git 2015-02-06 11:35:29 -07:00
bootstrap maint: update to latest gnulib 2016-05-26 10:47:03 -06:00
bootstrap.conf hvsupport: use a regex instead of XML::XPath 2016-07-19 18:42:44 +02:00
cfg.mk cfg.mk: join not_streq and not_strneq tests 2016-08-18 13:37:08 +02:00
config-post.h config-post.h:fix a typo 2016-09-21 09:35:51 +02:00
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libvirt-admin.pc.in Add libvirt-admin library 2015-06-16 13:46:20 +02:00
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libvirt.spec.in spec: Package cputypes.rng 2016-09-27 13:27:52 +02:00
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run.in Add PKG_CONFIG_PATH to run.in script. 2014-06-26 14:32:35 +01:00

README

         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>