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// SPDX-License-Identifier: CDDL-1.0
/*
* CDDL HEADER START
*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2020 by Delphix. All rights reserved.
*/
#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <libzfs.h>
#include <sys/zfs_ioctl.h>
#include <sys/nvpair.h>
#include <sys/fm/protocol.h>
#include <sys/fm/fs/zfs.h>
/*
* Command to output io and checksum ereport values, one per line.
* Used by zpool_events_duplicates.ksh to check for duplicate events.
*
* example output line:
*
* checksum "error_pool" 0x856dd01ce52e336 0x000034 0x000400 0x000a402c00
* 0x000004 0x000000 0x000000 0x000000 0x000001
*/
/*
* Our ereport duplicate criteria
*
* When the class and all of these values match, then an ereport is
* considered to be a duplicate.
*/
static const char *const criteria_name[] = {
FM_EREPORT_PAYLOAD_ZFS_POOL,
FM_EREPORT_PAYLOAD_ZFS_VDEV_GUID,
FM_EREPORT_PAYLOAD_ZFS_ZIO_ERR,
FM_EREPORT_PAYLOAD_ZFS_ZIO_SIZE,
FM_EREPORT_PAYLOAD_ZFS_ZIO_OFFSET,
FM_EREPORT_PAYLOAD_ZFS_ZIO_PRIORITY,
/* logical zio criteriai (optional) */
FM_EREPORT_PAYLOAD_ZFS_ZIO_OBJSET,
FM_EREPORT_PAYLOAD_ZFS_ZIO_OBJECT,
FM_EREPORT_PAYLOAD_ZFS_ZIO_BLKID,
FM_EREPORT_PAYLOAD_ZFS_ZIO_LEVEL,
};
#define CRITERIA_NAMES_COUNT ARRAY_SIZE(criteria_name)
static void
print_ereport_line(nvlist_t *nvl)
{
const char *class;
int last = CRITERIA_NAMES_COUNT - 1;
/*
* For the test case context, we only want to see 'io' and
* 'checksum' subclass. We skip 'data' to minimize the output.
*/
if (nvlist_lookup_string(nvl, FM_CLASS, &class) != 0 ||
strstr(class, "ereport.fs.zfs.") == NULL ||
strcmp(class, "ereport.fs.zfs.data") == 0) {
return;
}
(void) printf("%s\t", class + strlen("ereport.fs.zfs."));
for (int i = 0; i < CRITERIA_NAMES_COUNT; i++) {
nvpair_t *nvp;
uint32_t i32 = 0;
uint64_t i64 = 0;
const char *str = NULL;
if (nvlist_lookup_nvpair(nvl, criteria_name[i], &nvp) != 0) {
/* print a proxy for optional criteria */
(void) printf("--------");
(void) printf("%c", i == last ? '\n' : '\t');
continue;
}
switch (nvpair_type(nvp)) {
case DATA_TYPE_STRING:
(void) nvpair_value_string(nvp, &str);
(void) printf("\"%s\"", str ? str : "<NULL>");
break;
case DATA_TYPE_INT32:
(void) nvpair_value_int32(nvp, (void *)&i32);
(void) printf("0x%06x", i32);
break;
case DATA_TYPE_UINT32:
(void) nvpair_value_uint32(nvp, &i32);
(void) printf("0x%06x", i32);
break;
case DATA_TYPE_INT64:
(void) nvpair_value_int64(nvp, (void *)&i64);
(void) printf("0x%06llx", (u_longlong_t)i64);
break;
case DATA_TYPE_UINT64:
(void) nvpair_value_uint64(nvp, &i64);
if (strcmp(FM_EREPORT_PAYLOAD_ZFS_ZIO_OFFSET,
criteria_name[i]) == 0)
(void) printf("0x%010llx", (u_longlong_t)i64);
else
(void) printf("0x%06llx", (u_longlong_t)i64);
break;
default:
(void) printf("<unknown>");
break;
}
(void) printf("%c", i == last ? '\n' : '\t');
}
}
static void
ereports_dump(libzfs_handle_t *zhdl, int zevent_fd)
{
nvlist_t *nvl;
int ret, dropped;
while (1) {
ret = zpool_events_next(zhdl, &nvl, &dropped, ZEVENT_NONBLOCK,
zevent_fd);
if (ret || nvl == NULL)
break;
if (dropped > 0)
(void) fprintf(stdout, "dropped %d events\n", dropped);
print_ereport_line(nvl);
(void) fflush(stdout);
nvlist_free(nvl);
}
}
int
main(void)
{
libzfs_handle_t *hdl;
int fd;
hdl = libzfs_init();
if (hdl == NULL) {
(void) fprintf(stderr, "libzfs_init: %s\n", strerror(errno));
exit(2);
}
fd = open(ZFS_DEV, O_RDWR);
if (fd < 0) {
(void) fprintf(stderr, "open: %s\n", strerror(errno));
libzfs_fini(hdl);
exit(2);
}
ereports_dump(hdl, fd);
(void) close(fd);
libzfs_fini(hdl);
return (0);
}
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