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When doing an external checkpoint of a VM with no disk selected we'd return failure but not set error code. This was a result of ret not being set to 0 during walking of the disk array. Rework early failure checking and set the error code to success before iterating the array of disks so that we return success if no disks are snapshotted. Fixes the following symptom (or without --diskspec for diskless VMs) $ virsh snapshot-create-as snapshot-test --memspec /tmp/asdf --diskspec hda,snapshot=no error: An error occurred, but the cause is unknown
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>