Commit d83e87f8 authored by Krzysztof Karas's avatar Krzysztof Karas Committed by Jim Harris
Browse files

bdev/compress: generate UUID from parent bdev UUID 



Use base bdev UUID to generate new UUID for compress bdev.

Change-Id: I4dc055739b625c6fe910d01cafe3f8fffa4a0858
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/+/17126


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarAleksey Marchuk <alexeymar@nvidia.com>
Community-CI: Mellanox Build Bot
parent df788487

module/bdev/compress/vbdev_compress.c

+13 −0
Original line number Diff line number Diff line
@@ -26,6 +26,9 @@ 
#define COMP_BDEV_NAME "compress"

#define BACKING_IO_SZ (4 * 1024)



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

#define BDEV_COMPRESS_NAMESPACE_UUID "c3fad6da-832f-4cc0-9cdc-5c552b225e7b"



struct vbdev_comp_delete_ctx {

	spdk_delete_compress_complete	cb_fn;

	void				*cb_arg;
@@ -947,6 +950,7 @@ static int _set_compbdev_name(struct vbdev_compress *comp_bdev) 
static int

vbdev_compress_claim(struct vbdev_compress *comp_bdev)

{

	struct spdk_uuid ns_uuid;

	int rc;



	if (_set_compbdev_name(comp_bdev)) {
@@ -976,6 +980,15 @@ vbdev_compress_claim(struct vbdev_compress *comp_bdev) 
	comp_bdev->comp_bdev.fn_table = &vbdev_compress_fn_table;

	comp_bdev->comp_bdev.module = &compress_if;



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

	spdk_uuid_parse(&ns_uuid, BDEV_COMPRESS_NAMESPACE_UUID);

	rc = spdk_uuid_generate_sha1(&comp_bdev->comp_bdev.uuid, &ns_uuid,

				     (const char *)&comp_bdev->base_bdev->uuid, sizeof(struct spdk_uuid));

	if (rc) {

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

		return -EINVAL;

	}



	pthread_mutex_init(&comp_bdev->reduce_lock, NULL);



	/* Save the thread where the base device is opened */