Commit 504cac51 authored by Krzysztof Karas's avatar Krzysztof Karas Committed by Jim Harris
Browse files

bdev/ocf: generate UUID from parent bdev UUID 



Use parent (core) bdev UUID to generate new UUID for ocf bdev.

Change-Id: I480562a0690254082ef30baa8f72f38b260dbcb8
Signed-off-by: default avatarKrzysztof Karas <krzysztof.karas@intel.com>
Signed-off-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/17129


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarAleksey Marchuk <alexeymar@nvidia.com>
Community-CI: Mellanox Build Bot
parent b9039eba

module/bdev/ocf/vbdev_ocf.c

+14 −0
Original line number Diff line number Diff line
@@ -19,6 +19,9 @@ 
#include "spdk/log.h"

#include "spdk/cpuset.h"



/* This namespace UUID was generated using uuid_generate() method. */

#define BDEV_OCF_NAMESPACE_UUID "f92b7f49-f6c0-44c8-bd23-3205e8c3b6ad"



static struct spdk_bdev_module ocf_if;



static TAILQ_HEAD(, vbdev_ocf) g_ocf_vbdev_head
@@ -920,6 +923,7 @@ vbdev_ocf_mngt_exit(struct vbdev_ocf *vbdev, vbdev_ocf_mngt_fn *rollback_path, i 
static void

finish_register(struct vbdev_ocf *vbdev)

{

	struct spdk_uuid ns_uuid;

	int result;



	/* Copy properties of the base bdev */
@@ -935,6 +939,16 @@ finish_register(struct vbdev_ocf *vbdev) 
	vbdev->exp_bdev.fn_table = &cache_dev_fn_table;

	vbdev->exp_bdev.module = &ocf_if;



	/* Generate UUID based on namespace UUID + base bdev UUID. */

	spdk_uuid_parse(&ns_uuid, BDEV_OCF_NAMESPACE_UUID);

	result = spdk_uuid_generate_sha1(&vbdev->exp_bdev.uuid, &ns_uuid,

					 (const char *)&vbdev->core.bdev->uuid, sizeof(struct spdk_uuid));

	if (result) {

		SPDK_ERRLOG("Unable to generate new UUID for ocf bdev\n");

		vbdev_ocf_mngt_exit(vbdev, unregister_path_dirty, result);

		return;

	}



	/* Finally register vbdev in SPDK */

	spdk_io_device_register(vbdev, io_device_create_cb, io_device_destroy_cb,

				sizeof(struct vbdev_ocf_qctx), vbdev->name);