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zed monitors ZFS events. When a zevent is posted, zed will run any scripts that have been enabled for the corresponding zevent class. Multiple scripts may be invoked for a given zevent. The zevent nvpairs are passed to the scripts as environment variables. Events are processed synchronously by the single thread, and there is no maximum timeout for script execution. Consequently, a misbehaving script can delay (or forever block) the processing of subsequent zevents. Plans are to address this in future commits. Initial scripts have been developed to log events to syslog and send email in response to checksum/data/io errors and resilver.finish/scrub.finish events. By default, email will only be sent if the ZED_EMAIL variable is configured in zed.rc (which is serving as a config file of sorts until a proper configuration file is implemented). Signed-off-by: Chris Dunlap <cdunlap@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #2
71 lines
1.8 KiB
C
71 lines
1.8 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 from the top-level
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* OPENSOLARIS.LICENSE or <http://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 file
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* and include the License file from the top-level 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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* Developed at Lawrence Livermore National Laboratory (LLNL-CODE-403049).
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* Copyright (C) 2013-2014 Lawrence Livermore National Security, LLC.
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*/
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#ifndef ZED_H
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#define ZED_H
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/*
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* Absolute path for the default zed configuration file.
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*/
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#define ZED_CONF_FILE SYSCONFDIR "/zfs/zed.conf"
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/*
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* Absolute path for the default zed pid file.
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*/
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#define ZED_PID_FILE RUNSTATEDIR "/zed.pid"
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/*
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* Absolute path for the default zed state file.
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*/
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#define ZED_STATE_FILE RUNSTATEDIR "/zed.state"
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/*
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* Absolute path for the default zed script directory.
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*/
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#define ZED_SCRIPT_DIR SYSCONFDIR "/zfs/zed.d"
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/*
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* Reserved for future use.
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*/
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#define ZED_MAX_EVENTS 0
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/*
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* Reserved for future use.
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*/
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#define ZED_MIN_EVENTS 0
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/*
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* String prefix for ZED variables passed via environment variables.
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*/
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#define ZED_VAR_PREFIX "ZED_"
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/*
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* String prefix for ZFS event names passed via environment variables.
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*/
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#define ZEVENT_VAR_PREFIX "ZEVENT_"
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#endif /* !ZED_H */
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