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https://bugzilla.redhat.com/show_bug.cgi?id=1276198 Prior to commit id '98322052' failure to saferead the block device would cause an error to be logged and the device to be skipped while attempting to discover/create a stable target path for a new LUN (NPIV). This was because virStorageBackendSCSIFindLUs ignored errors from processLU and virStorageBackendSCSINewLun. Ignoring the failure allowed a multipath device with an "active" and "ghost" to be present on the host with the "ghost" block device being ignored. This patch will return a -2 to the caller indicating the desire to ignore the block device since it cannot be used directly rather than fail the pool startup.
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>