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68d92eea16
Found that I was unable to start existing domains after updating to a kernel with no cgroups support # zgrep CGROUP /proc/config.gz # CONFIG_CGROUPS is not set # virsh start test error: Failed to start domain test error: Unable to initialize /machine cgroup: Cannot allocate memory virCgroupPartitionNeedsEscaping() correctly returns errno (ENOENT) when attempting to open /proc/cgroups on such a system, but it was being dropped in virCgroupSetPartitionSuffix(). Change virCgroupSetPartitionSuffix() to propagate errors returned by its callees. Also check for ENOENT in qemuInitCgroup() when determining if cgroups support is available. (cherry picked from commit bbe97ae968eba60b71e0066d49f9fc909966d9d6)
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>