1 files changed, 46 insertions, 0 deletions
diff --git a/include/sys/vdev_disk.h b/include/sys/vdev_disk.h
new file mode 100644
index 000000000000..a7e19fbf0c4b
--- /dev/null
+++ b/include/sys/vdev_disk.h
@@ -0,0 +1,46 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (C) 2008-2010 Lawrence Livermore National Security, LLC.
+ * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ * Written by Brian Behlendorf <behlendorf1@llnl.gov>.
+ * LLNL-CODE-403049.
+ * Copyright (c) 2018 by Delphix. All rights reserved.
+ */
+
+#ifndef _SYS_VDEV_DISK_H
+#define	_SYS_VDEV_DISK_H
+
+/*
+ * Don't start the slice at the default block of 34; many storage
+ * devices will use a stripe width of 128k, other vendors prefer a 1m
+ * alignment.  It is best to play it safe and ensure a 1m alignment
+ * given 512B blocks.  When the block size is larger by a power of 2
+ * we will still be 1m aligned.  Some devices are sensitive to the
+ * partition ending alignment as well.
+ */
+#define	NEW_START_BLOCK		2048
+#define	PARTITION_END_ALIGNMENT	2048
+
+#ifdef _KERNEL
+#include <sys/vdev.h>
+#endif /* _KERNEL */
+#endif /* _SYS_VDEV_DISK_H */