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ae65c908b7
https://bugzilla.redhat.com/show_bug.cgi?id=1356436 According to RFC 3721 (https://www.ietf.org/rfc/rfc3721.txt), there are two ways to "discover" targets in/for the iSCSI environment. Discovery is the process which allows the initiator to find the targets to which it has access and at least one address at which each target may be accessed. The method currently implemented in libvirt using the virISCSIScanTargets API is known as "SendTargets" discovery. This method is more useful when the target IP Address and TCP port information are available, e.g. in libvirt terms the "portal". It returns a list of targets for the portal. From that list, the target can be found. This operation can also fill an iSCSI node table into which iSCSI logins may occur. Commit id '56057900' altered that filling by adding the "--op nonpersistent" since it was not necessarily desired to perform that for non libvirt related targets. The second method is "Static Configuration". This method not only needs the IP Address and TCP port (e.g. portal), but also the iSCSI target name. In libvirt terms this would be the device path field from the iSCSI pool <source> XML. This patch implements the second methodology using that required device path as the targetname.
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>