Bring over illumos ZFS FMA logic -- phase 1

This first phase brings over the ZFS SLM module, zfs_mod.c, to handle
auto operations in response to disk events. Disk event monitoring is
provided from libudev and generates the expected payload schema for
zfs_mod. This work leverages the recently added devid and phys_path
strings in the vdev label.

Signed-off-by: Brian Behlendorf <[email protected]>
Signed-off-by: Don Brady <[email protected]>
Signed-off-by: Tony Hutter <[email protected]>
Closes #4673

5 files changed, 273 insertions, 2 deletions

diff --git a/include/libzfs.h b/include/libzfs.h
index f83e21423..287555acf 100644
--- a/include/libzfs.h
+++ b/include/libzfs.h
@@ -824,6 +824,13 @@ extern int zpool_fru_set(zpool_handle_t *, uint64_t, const char *);
  */
 extern boolean_t is_mpath_whole_disk(const char *);
 extern void update_vdev_config_dev_strs(nvlist_t *);
+extern char *zfs_strip_partition(libzfs_handle_t *, char *);
+
+#ifdef HAVE_LIBUDEV
+struct udev_device;
+extern int zfs_device_get_devid(struct udev_device *, char *, size_t);
+extern int zfs_device_get_physical(struct udev_device *, char *, size_t);
+#endif
 
 #ifdef	__cplusplus
 }
diff --git a/include/sys/fm/fs/zfs.h b/include/sys/fm/fs/zfs.h
index ad3f4a79e..25510f8ca 100644
--- a/include/sys/fm/fs/zfs.h
+++ b/include/sys/fm/fs/zfs.h
@@ -57,9 +57,11 @@ extern "C" {
 #define	FM_EREPORT_PAYLOAD_ZFS_VDEV_GUID	"vdev_guid"
 #define	FM_EREPORT_PAYLOAD_ZFS_VDEV_TYPE	"vdev_type"
 #define	FM_EREPORT_PAYLOAD_ZFS_VDEV_PATH	"vdev_path"
+#define	FM_EREPORT_PAYLOAD_ZFS_VDEV_PHYSPATH	"vdev_physpath"
 #define	FM_EREPORT_PAYLOAD_ZFS_VDEV_DEVID	"vdev_devid"
 #define	FM_EREPORT_PAYLOAD_ZFS_VDEV_FRU		"vdev_fru"
 #define	FM_EREPORT_PAYLOAD_ZFS_VDEV_STATE	"vdev_state"
+#define	FM_EREPORT_PAYLOAD_ZFS_VDEV_LASTSTATE	"vdev_laststate"
 #define	FM_EREPORT_PAYLOAD_ZFS_VDEV_ASHIFT	"vdev_ashift"
 #define	FM_EREPORT_PAYLOAD_ZFS_VDEV_COMP_TS	"vdev_complete_ts"
 #define	FM_EREPORT_PAYLOAD_ZFS_VDEV_DELTA_TS	"vdev_delta_ts"
diff --git a/include/sys/spa.h b/include/sys/spa.h
index 51d4619f4..fead2d9de 100644
--- a/include/sys/spa.h
+++ b/include/sys/spa.h
@@ -849,7 +849,7 @@ extern void spa_log_error(spa_t *spa, zio_t *zio);
 extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
     zio_t *zio, uint64_t stateoroffset, uint64_t length);
 extern void zfs_post_remove(spa_t *spa, vdev_t *vd);
-extern void zfs_post_state_change(spa_t *spa, vdev_t *vd);
+extern void zfs_post_state_change(spa_t *spa, vdev_t *vd, uint64_t laststate);
 extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd);
 extern void zfs_post_sysevent(spa_t *spa, vdev_t *vd, const char *name);
 extern uint64_t spa_get_errlog_size(spa_t *spa);
diff --git a/include/sys/sysevent/Makefile.am b/include/sys/sysevent/Makefile.am
index 0d29eeb80..e9af2684f 100644
--- a/include/sys/sysevent/Makefile.am
+++ b/include/sys/sysevent/Makefile.am
@@ -1,5 +1,6 @@
 COMMON_H = \
-	$(top_srcdir)/include/sys/sysevent/eventdefs.h
+	$(top_srcdir)/include/sys/sysevent/eventdefs.h \
+	$(top_srcdir)/include/sys/sysevent/dev.h
 
 KERNEL_H =
 
diff --git a/include/sys/sysevent/dev.h b/include/sys/sysevent/dev.h
new file mode 100644
index 000000000..1117538d8
--- /dev/null
+++ b/include/sys/sysevent/dev.h
@@ -0,0 +1,261 @@
+/*
+ * 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 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef	_SYS_SYSEVENT_DEV_H
+#define	_SYS_SYSEVENT_DEV_H
+
+#include <sys/sysevent/eventdefs.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/*
+ * Event schema for EC_DEV_ADD/ESC_DISK
+ *
+ *	Event Class 	- EC_DEV_ADD
+ *	Event Sub-Class - ESC_DISK
+ *
+ *	Attribute Name	- EV_VERSION
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- event version number
+ *
+ *	Attribute Name	- DEV_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- /dev name to the raw device.
+ *			  The name does not include the slice number component.
+ *
+ *	Attribute Name	- DEV_PHYS_PATH
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- physical path of the device without the "/devices"
+ *			  prefix.
+ *
+ *	Attribute Name	- DEV_DRIVER_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- driver name
+ *
+ *	Attribute Name	- DEV_INSTANCE
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- driver instance number
+ *
+ *	Attribute Name	- DEV_PROP_PREFIX<devinfo_node_property>
+ *	Attribute Type	- data type of the devinfo_node_property
+ *	Attribute Value	- value of the devinfo_node_property
+ *
+ *
+ * Event schema for EC_DEV_ADD/ESC_NETWORK
+ *
+ *	Event Class 	- EC_DEV_ADD
+ *	Event Sub-Class - ESC_NETWORK
+ *
+ *	Attribute Name	- EV_VERSION
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- event version number
+ *
+ *	Attribute Name	- DEV_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- /dev name associated with the device if exists.
+ *			  /dev name associated with the driver for DLPI
+ *			  Style-2 only drivers.
+ *
+ *	Attribute Name	- DEV_PHYS_PATH
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- physical path of the device without the "/devices"
+ *			  prefix.
+ *
+ *	Attribute Name	- DEV_DRIVER_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- driver name
+ *
+ *	Attribute Name	- DEV_INSTANCE
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- driver instance number
+ *
+ *	Attribute Name	- DEV_PROP_PREFIX<devinfo_node_property>
+ *	Attribute Type	- data type of the devinfo_node_property
+ *	Attribute Value	- value of the devinfo_node_property
+ *
+ *
+ * Event schema for EC_DEV_ADD/ESC_PRINTER
+ *
+ *	Event Class 	- EC_DEV_ADD
+ *	Event Sub-Class - ESC_PRINTER
+ *
+ *	Attribute Name	- EV_VERSION
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- event version number
+ *
+ *	Attribute Name	- DEV_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- /dev/printers name associated with the device
+ *			  if exists.
+ *			  /dev name associated with the device if it exists
+ *
+ *	Attribute Name	- DEV_PHYS_PATH
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- physical path of the device without the "/devices"
+ *			  prefix.
+ *
+ *	Attribute Name	- DEV_DRIVER_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- driver name
+ *
+ *	Attribute Name	- DEV_INSTANCE
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- driver instance number
+ *
+ *	Attribute Name	- DEV_PROP_PREFIX<devinfo_node_property>
+ *	Attribute Type	- data type of the devinfo_node_property
+ *	Attribute Value	- value of the devinfo_node_property
+ *
+ *
+ * Event schema for EC_DEV_REMOVE/ESC_DISK
+ *
+ *	Event Class 	- EC_DEV_REMOVE
+ *	Event Sub-Class - ESC_DISK
+ *
+ *	Attribute Name	- EV_VERSION
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- event version number
+ *
+ *	Attribute Name	- DEV_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- /dev name to the raw device.
+ *			  The name does not include the slice number component.
+ *
+ *	Attribute Name	- DEV_PHYS_PATH
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- physical path of the device without the "/devices"
+ *			  prefix.
+ *
+ *	Attribute Name	- DEV_DRIVER_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- driver name
+ *
+ *	Attribute Name	- DEV_INSTANCE
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- driver instance number
+ *
+ *
+ * Event schema for EC_DEV_REMOVE/ESC_NETWORK
+ *
+ *	Event Class 	- EC_DEV_REMOVE
+ *	Event Sub-Class - ESC_NETWORK
+ *
+ *	Attribute Name	- EV_VERSION
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- event version number
+ *
+ *	Attribute Name	- DEV_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- /dev name associated with the device if exists.
+ *			  /dev name associated with the driver for DLPI
+ *			  Style-2 only drivers.
+ *
+ *	Attribute Name	- DEV_PHYS_PATH
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- physical path of the device without the "/devices"
+ *			  prefix.
+ *
+ *	Attribute Name	- DEV_DRIVER_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- driver name
+ *
+ *	Attribute Name	- DEV_INSTANCE
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- driver instance number
+ *
+ *
+ * Event schema for EC_DEV_REMOVE/ESC_PRINTER
+ *
+ *	Event Class 	- EC_DEV_REMOVE
+ *	Event Sub-Class - ESC_PRINTER
+ *
+ *	Attribute Name	- EV_VERSION
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- event version number
+ *
+ *	Attribute Name	- DEV_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- /dev/printers name associated with the device
+ *			  if exists.
+ *			  /dev name associated with the device if it exists
+ *
+ *	Attribute Name	- DEV_PHYS_PATH
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- physical path of the device without the "/devices"
+ *			  prefix.
+ *
+ *	Attribute Name	- DEV_DRIVER_NAME
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- driver name
+ *
+ *	Attribute Name	- DEV_INSTANCE
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- driver instance number
+ *
+ *
+ * Event schema for EC_DEV_BRANCH/ESC_DEV_BRANCH_ADD or ESC_DEV_BRANCH_REMOVE
+ *
+ *	Event Class 	- EC_DEV_BRANCH
+ *	Event Sub-Class - ESC_DEV_BRANCH_ADD or ESC_DEV_BRANCH_REMOVE
+ *
+ *	Attribute Name	- EV_VERSION
+ *	Attribute Type	- DATA_TYPE_INT32
+ *	Attribute Value	- event version number
+ *
+ *	Attribute Name	- DEV_PHYS_PATH
+ *	Attribute Type	- DATA_TYPE_STRING
+ *	Attribute Value	- physical path to the root node of the device subtree
+ *			  without the "/devices" prefix.
+ */
+
+#define	EV_VERSION		"version"
+#define	DEV_PHYS_PATH		"phys_path"
+#define	DEV_NAME		"dev_name"
+#define	DEV_DRIVER_NAME		"driver_name"
+#define	DEV_INSTANCE		"instance"
+#define	DEV_PROP_PREFIX		"prop-"
+
+#ifdef __linux__
+#define	DEV_IDENTIFIER		"devid"
+#define	DEV_PATH		"path"
+#define	DEV_IS_PART		"is_slice"
+#define	DEV_SIZE		"dev_size"
+#endif /* __linux__ */
+
+#define	EV_V1			1
+
+/* maximum number of devinfo node properties added to the event */
+#define	MAX_PROP_COUNT		100
+
+/* only properties with size less than PROP_LEN_LIMIT are added to the event */
+#define	PROP_LEN_LIMIT		1024
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* _SYS_SYSEVENT_DEV_H */