config_json callback is used to preserve all
bdevs that were created during application runtime.
xnvme bdev module was missing this callback.
While here, io_mechanism is now saved in the bdev_xnvme
structure for reference in the config_json.
Haven't seen an option to pull this from xnvme itself.
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: I1a88ad2bb761f589d214fec8f0690c38572824d6
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14116
Reviewed-by: Michal Berger <michal.berger@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Krzysztof Karas <krzysztof.karas@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>