Re: [libvirt] [PATCH v2] storage backend: Add sheepdog support

This patch brings support to manage sheepdog pools and volumes to libvirt. It uses the "collie" command-line utility that comes with sheepdog for that. A sheepdog pool in libvirt maps to a sheepdog cluster. It needs a host and port to connect to, which in most cases is just going to be the default of localhost on port 7000. A sheepdog volume in libvirt maps to a sheepdog vdi. To create one specify the pool, a name and the capacity. Volumes can also be resized later. In the volume XML the vdi name is prefixed with "sheepdog:" and put into the <target><path>. To use the volume as a disk source for virtual machines specify the vdi name as "name" attribute of the <source>. The host and port information from the pool are specified inside the host tag.

+ + VIR_FREE(vol->target.path); + if (virAsprintf(&vol->target.path, "sheepdog:%s", vol->name) == -1) { + virReportOOMError(); + goto cleanup; + }