Function zdb_blkptr_cb

freebsd/contrib/openzfs/cmd/zdb/zdb.c:5240–5327

}

static int
zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
    const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
{
	zdb_cb_t *zcb = arg;
	dmu_object_type_t type;
	boolean_t is_metadata;

	if (zb->zb_level == ZB_DNODE_LEVEL)
		return (0);

	if (dump_opt['b'] >= 5 && bp->blk_birth > 0) {
		char blkbuf[BP_SPRINTF_LEN];
		snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
		(void) printf("objset %llu object %llu "
		    "level %lld offset 0x%llx %s\n",
		    (u_longlong_t)zb->zb_objset,
		    (u_longlong_t)zb->zb_object,
		    (longlong_t)zb->zb_level,
		    (u_longlong_t)blkid2offset(dnp, bp, zb),
		    blkbuf);
	}

	if (BP_IS_HOLE(bp) || BP_IS_REDACTED(bp))
		return (0);

	type = BP_GET_TYPE(bp);

	zdb_count_block(zcb, zilog, bp,
	    (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);

	is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));

	if (!BP_IS_EMBEDDED(bp) &&
	    (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
		size_t size = BP_GET_PSIZE(bp);
		abd_t *abd = abd_alloc(size, B_FALSE);
		int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;

		/* If it's an intent log block, failure is expected. */
		if (zb->zb_level == ZB_ZIL_LEVEL)
			flags |= ZIO_FLAG_SPECULATIVE;

		mutex_enter(&spa->spa_scrub_lock);
		while (spa->spa_load_verify_bytes > max_inflight_bytes)
			cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
		spa->spa_load_verify_bytes += size;
		mutex_exit(&spa->spa_scrub_lock);

		zio_nowait(zio_read(NULL, spa, bp, abd, size,
		    zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
	}

	zcb->zcb_readfails = 0;

	/* only call gethrtime() every 100 blocks */
	static int iters;
	if (++iters > 100)