-
Dan Williams authored
Given that the naming of pmem devices changes from the pmemX form to the pmemX.Y form when namespace id is greater than 0, arrange for namespaces with id-0 to be exempt from deletion. Otherwise a simple reconfiguration of an existing namespace to a new mode results in a name change of the resulting block device: # ndctl list --namespace=namespace1.0 { "dev":"namespace1.0", "mode":"raw", "size":2147483648, "uuid":"3dadf3dc-89b9-4b24-b20e-abc8a4707ce3", "blockdev":"pmem1" } # ndctl create-namespace --reconfig=namespace1.0 --mode=memory --force { "dev":"namespace1.1", "mode":"memory", "size":2111832064, "uuid":"7b4a6341-7318-4219-a02c-fb57c0bbf613", "blockdev":"pmem1.1" } This change does require tooling changes to explicitly look for namespaceX.0 if the seed has already advanced to another namespace. Cc: <stable@vger.kernel.org> Fixes: 98a29c39 ("libnvdimm, namespace: allow creation of multiple pmem-namespaces per region") Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
9d032f42