Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
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John Ferlan f41a5b844f virsh: Add 'iothreadsinfo' command
Add the 'iothreadsinfo' command to display IOThread Info data. Allow for
[--live] or [--config] options in order to display live or config data
for an active domain.

$ virsh iothreadsinfo --help
  NAME
    iothreadsinfo - view domain IOThreads

  SYNOPSIS
    iothreadsinfo <domain> [--config] [--live] [--current]

  DESCRIPTION
    Returns basic information about the domain IOThreads.

  OPTIONS
    [--domain] <string>  domain name, id or uuid
    --config         affect next boot
    --live           affect running domain
    --current        affect current domain

An active domain may return:

$ virsh iothreads $dom
 IOThread ID     CPU Affinity
---------------------------------------------------
  1               2
  2               3
  3               0

$ echo $?
0

For domains which don't have IOThreads the following is returned:

$ virsh iothreads $dom
No IOThreads found for the domain

$ echo $?
0

For domains which are not running the following is returned:

$ virsh iothreads $dom --live
error: Unable to get domain IOThreads information
error: Requested operation is not valid: domain is not running

$ echo $?
1

Editing a domains configuration and modifying the iothreadpin data for
thread 3 from nothing provided to setting a cpuset of '0-1' and then
displaying using --config would display:

$ virsh iothreads f18iothr --config
 IOThread ID     CPU Affinity
 ----------------------------
  1               2
  2               3
  3               0-1

$

Signed-off-by: John Ferlan <jferlan@redhat.com>
2015-03-06 06:49:32 -05:00
.gnulib@c27f1a356f maint: update to latest gnulib 2015-01-05 16:38:50 -07:00
build-aux bracket-spacing: Add syntax-check for unnecessary curly brackets 2014-11-14 17:13:36 +01:00
daemon remote: Implement the remote plumbing for virDomainGetIOThreadsInfo 2015-03-06 06:49:32 -05:00
docs memtune: change the way how we store unlimited value 2015-03-06 11:52:24 +01:00
examples Grant access to helpers 2015-01-23 11:12:44 +01:00
gnulib maint: fix date in local gnulib patch 2015-01-05 16:44:10 +00:00
include Implement public API for virDomainGetIOThreadsInfo 2015-03-06 06:49:32 -05:00
m4 Conditionalize use of -Wno-suggest-attribute=format pragma 2015-01-16 17:12:27 +00:00
po Release of libvirt-1.2.13 2015-03-02 11:40:05 +08:00
src qemu: Implement the qemu driver fetch for IOThreads 2015-03-06 06:49:32 -05:00
tests memtune: change the way how we store unlimited value 2015-03-06 11:52:24 +01:00
tools virsh: Add 'iothreadsinfo' command 2015-03-06 06:49:32 -05:00
.ctags maint: Make ctags work out of the box 2013-07-18 08:47:21 +02:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.gitignore Revert "src/xenconfig: Xen-xl parser" 2015-01-12 10:15:13 -07:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap maint: update .mailmap 2014-12-21 00:21:34 +01:00
AUTHORS.in Update my email address in AUTHORS.in 2014-12-19 22:30:31 +01:00
autobuild.sh Disable libvirtd by default when building on Win32 2014-04-29 11:30:32 +01:00
autogen.sh maint: improve usage of autogen's --no-git 2015-02-06 11:35:29 -07:00
bootstrap maint: update to latest gnulib 2015-01-05 16:05:12 +00:00
bootstrap.conf Revert "bootstrap.conf: add check for flex" 2015-01-12 10:14:30 -07:00
cfg.mk Make tests independant of system page size 2015-02-02 20:27:43 +00:00
ChangeLog-old Fix typos in src/* 2014-04-21 16:49:08 -06:00
config-post.h build: fix build of virt-login-shell on systems with older gnutls 2013-10-22 09:41:50 -06:00
configure.ac Post-release version bump for new dev cycle 2015-03-02 07:38:43 +01:00
COPYING maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
COPYING.LESSER maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
HACKING docs: Fix missing curly braces 2014-12-10 11:21:31 +01:00
libvirt-lxc.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt-qemu.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.spec.in spec: Enable RBD storage driver in RHEL-7 2015-03-05 16:24:53 +01:00
Makefile.am examples: Introduce domtop 2014-07-18 16:39:54 +02:00
Makefile.nonreentrant maint: use LGPL correctly 2013-05-20 14:03:48 -06:00
mingw-libvirt.spec.in Move virConnect related APIs out of libvirt.h.in 2014-10-24 17:23:51 +01:00
README Correct typos in the documentation (Atsushi SAKAI) 2008-01-24 10:15:13 +00:00
README-hacking docs: update README-hacking 2014-05-06 16:20:24 -06:00
run.in Add PKG_CONFIG_PATH to run.in script. 2014-06-26 14:32:35 +01:00
TODO Update todo list file to point at bugzilla/website 2010-10-13 16:45:26 +01:00

         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>