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17e212652d
There are a couple changes included here. The first is to introduce a cap on the size the ZED will grow the zevent list to. One million entries is more than enough for most use cases, and if you are overflowing that value, the problem needs to be addressed another way. The value is also tunable, for those who want the limit to be higher or lower. The other change is to add a kernel module parameter that allows snapshot creation/deletion to be exempted from the history logging; for most workloads, having these things logged is valuable, but for some workloads it produces large quantities of log spam and isn't especially helpful. Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Paul Dagnelie <pcd@delphix.com> Issue #13374 Closes #13753
60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/*
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* This file is part of the ZFS Event Daemon (ZED).
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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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* Refer to the OpenZFS git commit log for authoritative copyright attribution.
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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 Version 1.0 (CDDL-1.0).
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* You can obtain a copy of the license from the top-level file
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* "OPENSOLARIS.LICENSE" or at <http://opensource.org/licenses/CDDL-1.0>.
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* You may not use this file except in compliance with the license.
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*/
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#ifndef ZED_CONF_H
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#define ZED_CONF_H
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#include <libzfs.h>
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#include <stdint.h>
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#include "zed_strings.h"
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struct zed_conf {
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char *pid_file; /* abs path to pid file */
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char *zedlet_dir; /* abs path to zedlet dir */
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char *state_file; /* abs path to state file */
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libzfs_handle_t *zfs_hdl; /* handle to libzfs */
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zed_strings_t *zedlets; /* names of enabled zedlets */
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char *path; /* custom $PATH for zedlets to use */
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int pid_fd; /* fd to pid file for lock */
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int state_fd; /* fd to state file */
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int zevent_fd; /* fd for access to zevents */
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int16_t max_jobs; /* max zedlets to run at one time */
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int32_t max_zevent_buf_len; /* max size of kernel event list */
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boolean_t do_force:1; /* true if force enabled */
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boolean_t do_foreground:1; /* true if run in foreground */
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boolean_t do_memlock:1; /* true if locking memory */
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boolean_t do_verbose:1; /* true if verbosity enabled */
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boolean_t do_zero:1; /* true if zeroing state */
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boolean_t do_idle:1; /* true if idle enabled */
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};
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void zed_conf_init(struct zed_conf *zcp);
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void zed_conf_destroy(struct zed_conf *zcp);
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void zed_conf_parse_opts(struct zed_conf *zcp, int argc, char **argv);
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int zed_conf_scan_dir(struct zed_conf *zcp);
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int zed_conf_write_pid(struct zed_conf *zcp);
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int zed_conf_open_state(struct zed_conf *zcp);
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int zed_conf_read_state(struct zed_conf *zcp, uint64_t *eidp, int64_t etime[]);
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int zed_conf_write_state(struct zed_conf *zcp, uint64_t eid, int64_t etime[]);
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#endif /* !ZED_CONF_H */
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