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e27e692bcc
Users were seeing floods of `config_sync` events when autoexpand was enabled. This happened because all "disk status change" udev events invoke the autoexpand codepath, which calls zpool_relabel_disk(), which in turn cause another "disk status change" event to happen, in a feedback loop. Note that "disk status change" happens every time a user calls close() on a block device. This commit breaks the feedback loop by only allowing an autoexpand to happen if the disk actually changed size. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tony Hutter <hutter2@llnl.gov> Closes: #7132 Closes: #7366 Closes #13729
265 lines
7.6 KiB
C
265 lines
7.6 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _SYS_SYSEVENT_DEV_H
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#define _SYS_SYSEVENT_DEV_H
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#include <sys/sysevent/eventdefs.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Event schema for EC_DEV_ADD/ESC_DISK
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*
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* Event Class - EC_DEV_ADD
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* Event Sub-Class - ESC_DISK
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*
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* Attribute Name - EV_VERSION
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - event version number
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*
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* Attribute Name - DEV_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - /dev name to the raw device.
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* The name does not include the slice number component.
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*
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* Attribute Name - DEV_PHYS_PATH
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - physical path of the device without the "/devices"
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* prefix.
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*
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* Attribute Name - DEV_DRIVER_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - driver name
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*
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* Attribute Name - DEV_INSTANCE
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - driver instance number
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*
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* Attribute Name - DEV_PROP_PREFIX<devinfo_node_property>
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* Attribute Type - data type of the devinfo_node_property
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* Attribute Value - value of the devinfo_node_property
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*
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*
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* Event schema for EC_DEV_ADD/ESC_NETWORK
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*
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* Event Class - EC_DEV_ADD
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* Event Sub-Class - ESC_NETWORK
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*
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* Attribute Name - EV_VERSION
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - event version number
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*
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* Attribute Name - DEV_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - /dev name associated with the device if exists.
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* /dev name associated with the driver for DLPI
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* Style-2 only drivers.
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*
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* Attribute Name - DEV_PHYS_PATH
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - physical path of the device without the "/devices"
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* prefix.
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*
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* Attribute Name - DEV_DRIVER_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - driver name
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*
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* Attribute Name - DEV_INSTANCE
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - driver instance number
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*
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* Attribute Name - DEV_PROP_PREFIX<devinfo_node_property>
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* Attribute Type - data type of the devinfo_node_property
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* Attribute Value - value of the devinfo_node_property
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*
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*
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* Event schema for EC_DEV_ADD/ESC_PRINTER
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*
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* Event Class - EC_DEV_ADD
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* Event Sub-Class - ESC_PRINTER
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*
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* Attribute Name - EV_VERSION
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - event version number
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*
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* Attribute Name - DEV_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - /dev/printers name associated with the device
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* if exists.
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* /dev name associated with the device if it exists
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*
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* Attribute Name - DEV_PHYS_PATH
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - physical path of the device without the "/devices"
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* prefix.
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*
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* Attribute Name - DEV_DRIVER_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - driver name
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*
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* Attribute Name - DEV_INSTANCE
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - driver instance number
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*
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* Attribute Name - DEV_PROP_PREFIX<devinfo_node_property>
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* Attribute Type - data type of the devinfo_node_property
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* Attribute Value - value of the devinfo_node_property
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*
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*
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* Event schema for EC_DEV_REMOVE/ESC_DISK
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*
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* Event Class - EC_DEV_REMOVE
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* Event Sub-Class - ESC_DISK
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*
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* Attribute Name - EV_VERSION
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - event version number
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*
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* Attribute Name - DEV_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - /dev name to the raw device.
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* The name does not include the slice number component.
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*
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* Attribute Name - DEV_PHYS_PATH
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - physical path of the device without the "/devices"
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* prefix.
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*
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* Attribute Name - DEV_DRIVER_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - driver name
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*
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* Attribute Name - DEV_INSTANCE
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - driver instance number
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*
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*
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* Event schema for EC_DEV_REMOVE/ESC_NETWORK
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*
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* Event Class - EC_DEV_REMOVE
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* Event Sub-Class - ESC_NETWORK
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*
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* Attribute Name - EV_VERSION
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - event version number
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*
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* Attribute Name - DEV_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - /dev name associated with the device if exists.
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* /dev name associated with the driver for DLPI
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* Style-2 only drivers.
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*
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* Attribute Name - DEV_PHYS_PATH
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - physical path of the device without the "/devices"
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* prefix.
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*
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* Attribute Name - DEV_DRIVER_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - driver name
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*
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* Attribute Name - DEV_INSTANCE
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - driver instance number
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*
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*
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* Event schema for EC_DEV_REMOVE/ESC_PRINTER
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*
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* Event Class - EC_DEV_REMOVE
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* Event Sub-Class - ESC_PRINTER
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*
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* Attribute Name - EV_VERSION
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - event version number
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*
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* Attribute Name - DEV_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - /dev/printers name associated with the device
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* if exists.
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* /dev name associated with the device if it exists
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*
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* Attribute Name - DEV_PHYS_PATH
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - physical path of the device without the "/devices"
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* prefix.
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*
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* Attribute Name - DEV_DRIVER_NAME
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - driver name
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*
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* Attribute Name - DEV_INSTANCE
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - driver instance number
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*
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*
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* Event schema for EC_DEV_BRANCH/ESC_DEV_BRANCH_ADD or ESC_DEV_BRANCH_REMOVE
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*
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* Event Class - EC_DEV_BRANCH
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* Event Sub-Class - ESC_DEV_BRANCH_ADD or ESC_DEV_BRANCH_REMOVE
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*
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* Attribute Name - EV_VERSION
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* Attribute Type - DATA_TYPE_INT32
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* Attribute Value - event version number
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*
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* Attribute Name - DEV_PHYS_PATH
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* Attribute Type - DATA_TYPE_STRING
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* Attribute Value - physical path to the root node of the device subtree
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* without the "/devices" prefix.
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*/
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#define EV_VERSION "version"
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#define DEV_PHYS_PATH "phys_path"
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#define DEV_NAME "dev_name"
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#define DEV_DRIVER_NAME "driver_name"
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#define DEV_INSTANCE "instance"
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#define DEV_PROP_PREFIX "prop-"
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#ifdef __linux__
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#define DEV_IDENTIFIER "devid"
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#define DEV_PATH "path"
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#define DEV_IS_PART "is_slice"
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#define DEV_SIZE "dev_size"
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/* Size of the whole parent block device (if dev is a partition) */
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#define DEV_PARENT_SIZE "dev_parent_size"
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#endif /* __linux__ */
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#define EV_V1 1
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/* maximum number of devinfo node properties added to the event */
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#define MAX_PROP_COUNT 100
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/* only properties with size less than PROP_LEN_LIMIT are added to the event */
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#define PROP_LEN_LIMIT 1024
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_SYSEVENT_DEV_H */
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