MFgraid/head:

Add new RAID GEOM class, that is going to replace ataraid(4) in supporting
various BIOS-based software RAIDs. Unlike ataraid(4) this implementation
does not depend on legacy ata(4) subsystem and can be used with any disk
drivers, including new CAM-based ones (ahci(4), siis(4), mvs(4), ata(4)
with `options ATA_CAM`). To make code more readable and extensible, this
implementation follows modular design, including core part and two sets
of modules, implementing support for different metadata formats and RAID
levels.

Support for such popular metadata formats is now implemented:
Intel, JMicron, NVIDIA, Promise (also used by AMD/ATI) and SiliconImage.

Such RAID levels are now supported:
RAID0, RAID1, RAID1E, RAID10, SINGLE, CONCAT.

For any all of these RAID levels and metadata formats this class supports
full cycle of volume operations: reading, writing, creation, deletion,
disk removal and insertion, rebuilding, dirty shutdown detection
and resynchronization, bad sector recovery, faulty disks tracking,
hot-spare disks. For Intel and Promise formats there is support multiple
volumes per disk set.

Look graid(8) manual page for additional details.

Co-authored by:	imp
Sponsored by:	Cisco Systems, Inc. and iXsystems, Inc.

1 files changed, 91 insertions, 0 deletions

diff --git a/sbin/geom/class/raid/geom_raid.c b/sbin/geom/class/raid/geom_raid.c
new file mode 100644
index 0000000..2f16295
--- /dev/null
+++ b/sbin/geom/class/raid/geom_raid.c
@@ -0,0 +1,91 @@
+/*-
+ * Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <errno.h>
+#include <paths.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <strings.h>
+#include <assert.h>
+#include <libgeom.h>
+#include <geom/raid/g_raid.h>
+#include <core/geom.h>
+#include <misc/subr.h>
+
+uint32_t lib_version = G_LIB_VERSION;
+uint32_t version = G_RAID_VERSION;
+
+struct g_command class_commands[] = {
+	{ "label", G_FLAG_VERBOSE, NULL,
+	    {
+		{ 'f', "force", NULL, G_TYPE_BOOL },
+		{ 'S', "size", G_VAL_OPTIONAL, G_TYPE_NUMBER },
+		{ 's', "strip", G_VAL_OPTIONAL, G_TYPE_NUMBER },
+		G_OPT_SENTINEL
+	    },
+	    "[-fv] [-S size] [-s stripsize] format label level prov ..."
+	},
+	{ "add", G_FLAG_VERBOSE, NULL,
+	    {
+		{ 'f', "force", NULL, G_TYPE_BOOL },
+		{ 'S', "size", G_VAL_OPTIONAL, G_TYPE_NUMBER },
+		{ 's', "strip", G_VAL_OPTIONAL, G_TYPE_NUMBER },
+		G_OPT_SENTINEL
+	    },
+	    "[-fv] [-S size] [-s stripsize] name label level"
+	},
+	{ "delete", G_FLAG_VERBOSE, NULL,
+	    {
+		{ 'f', "force", NULL, G_TYPE_BOOL },
+		G_OPT_SENTINEL
+	    },
+	    "[-fv] name [label|num]"
+	},
+	{ "insert", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
+	    "[-v] name prov ..."
+	},
+	{ "remove", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
+	    "[-v] name prov ..."
+	},
+	{ "fail", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
+	    "[-v] name prov ..."
+	},
+	{ "stop", G_FLAG_VERBOSE, NULL,
+	    {
+		{ 'f', "force", NULL, G_TYPE_BOOL },
+		G_OPT_SENTINEL
+	    },
+	    "[-fv] name"
+	},
+	G_CMD_SENTINEL
+};
+