4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
22 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2012 by Delphix. All rights reserved.
24 * Copyright 2014 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2016, Intel Corporation.
29 * ZFS syseventd module.
31 * file origin: openzfs/usr/src/cmd/syseventd/modules/zfs_mod/zfs_mod.c
33 * The purpose of this module is to identify when devices are added to the
34 * system, and appropriately online or replace the affected vdevs.
36 * When a device is added to the system:
38 * 1. Search for any vdevs whose devid matches that of the newly added
41 * 2. If no vdevs are found, then search for any vdevs whose udev path
42 * matches that of the new device.
44 * 3. If no vdevs match by either method, then ignore the event.
46 * 4. Attempt to online the device with a flag to indicate that it should
47 * be unspared when resilvering completes. If this succeeds, then the
48 * same device was inserted and we should continue normally.
50 * 5. If the pool does not have the 'autoreplace' property set, attempt to
51 * online the device again without the unspare flag, which will
52 * generate a FMA fault.
54 * 6. If the pool has the 'autoreplace' property set, and the matching vdev
55 * is a whole disk, then label the new disk and attempt a 'zpool
58 * The module responds to EC_DEV_ADD events. The special ESC_ZFS_VDEV_CHECK
59 * event indicates that a device failed to open during pool load, but the
60 * autoreplace property was set. In this case, we deferred the associated
61 * FMA fault until our module had a chance to process the autoreplace logic.
62 * If the device could not be replaced, then the second online attempt will
63 * trigger the FMA fault that we skipped earlier.
65 * ZFS on Linux porting notes:
66 * In lieu of a thread pool, just spawn a thread on demmand.
67 * Linux udev provides a disk insert for both the disk and the partition
74 #include <libnvpair.h>
82 #include <sys/sunddi.h>
83 #include <sys/sysevent/eventdefs.h>
84 #include <sys/sysevent/dev.h>
87 #include "zfs_agents.h"
88 #include "../zed_log.h"
90 #define DEV_BYID_PATH "/dev/disk/by-id/"
91 #define DEV_BYPATH_PATH "/dev/disk/by-path/"
93 typedef void (*zfs_process_func_t
)(zpool_handle_t
*, nvlist_t
*, boolean_t
);
95 libzfs_handle_t
*g_zfshdl
;
96 list_t g_pool_list
; /* list of unavailable pools at initialization */
97 list_t g_device_list
; /* list of disks with asynchronous label request */
98 boolean_t g_enumeration_done
;
101 typedef struct unavailpool
{
102 zpool_handle_t
*uap_zhp
;
103 pthread_t uap_enable_tid
; /* dataset enable thread if activated */
104 list_node_t uap_node
;
107 typedef struct pendingdev
{
108 char pd_physpath
[128];
113 zfs_toplevel_state(zpool_handle_t
*zhp
)
119 verify(nvlist_lookup_nvlist(zpool_get_config(zhp
, NULL
),
120 ZPOOL_CONFIG_VDEV_TREE
, &nvroot
) == 0);
121 verify(nvlist_lookup_uint64_array(nvroot
, ZPOOL_CONFIG_VDEV_STATS
,
122 (uint64_t **)&vs
, &c
) == 0);
123 return (vs
->vs_state
);
127 zfs_unavail_pool(zpool_handle_t
*zhp
, void *data
)
129 zed_log_msg(LOG_INFO
, "zfs_unavail_pool: examining '%s' (state %d)",
130 zpool_get_name(zhp
), (int)zfs_toplevel_state(zhp
));
132 if (zfs_toplevel_state(zhp
) < VDEV_STATE_DEGRADED
) {
134 uap
= malloc(sizeof (unavailpool_t
));
136 uap
->uap_enable_tid
= 0;
137 list_insert_tail((list_t
*)data
, uap
);
145 * Two stage replace on Linux
146 * since we get disk notifications
147 * we can wait for partitioned disk slice to show up!
149 * First stage tags the disk, initiates async partitioning, and returns
150 * Second stage finds the tag and proceeds to ZFS labeling/replace
152 * disk-add --> label-disk + tag-disk --> partition-add --> zpool_vdev_attach
154 * 1. physical match with no fs, no partition
155 * tag it top, partition disk
157 * 2. physical match again, see partion and tag
162 * The device associated with the given vdev (either by devid or physical path)
163 * has been added to the system. If 'isdisk' is set, then we only attempt a
164 * replacement if it's a whole disk. This also implies that we should label the
167 * First, we attempt to online the device (making sure to undo any spare
168 * operation when finished). If this succeeds, then we're done. If it fails,
169 * and the new state is VDEV_CANT_OPEN, it indicates that the device was opened,
170 * but that the label was not what we expected. If the 'autoreplace' property
171 * is not set, then we relabel the disk (if specified), and attempt a 'zpool
172 * replace'. If the online is successful, but the new state is something else
173 * (REMOVED or FAULTED), it indicates that we're out of sync or in some sort of
174 * race, and we should avoid attempting to relabel the disk.
176 * Also can arrive here from a ESC_ZFS_VDEV_CHECK event
179 zfs_process_add(zpool_handle_t
*zhp
, nvlist_t
*vdev
, boolean_t labeled
)
182 vdev_state_t newstate
;
183 nvlist_t
*nvroot
, *newvd
;
184 pendingdev_t
*device
;
185 uint64_t wholedisk
= 0ULL;
186 uint64_t offline
= 0ULL;
187 uint64_t guid
= 0ULL;
188 char *physpath
= NULL
, *new_devid
= NULL
;
189 char rawpath
[PATH_MAX
], fullpath
[PATH_MAX
];
190 char devpath
[PATH_MAX
];
196 if (nvlist_lookup_string(vdev
, ZPOOL_CONFIG_PATH
, &path
) != 0)
199 /* Skip healthy disks */
200 verify(nvlist_lookup_uint64_array(vdev
, ZPOOL_CONFIG_VDEV_STATS
,
201 (uint64_t **)&vs
, &c
) == 0);
202 if (vs
->vs_state
== VDEV_STATE_HEALTHY
) {
203 zed_log_msg(LOG_INFO
, "%s: %s is already healthy, skip it.",
208 (void) nvlist_lookup_string(vdev
, ZPOOL_CONFIG_PHYS_PATH
, &physpath
);
209 (void) nvlist_lookup_uint64(vdev
, ZPOOL_CONFIG_WHOLE_DISK
, &wholedisk
);
210 (void) nvlist_lookup_uint64(vdev
, ZPOOL_CONFIG_OFFLINE
, &offline
);
211 (void) nvlist_lookup_uint64(vdev
, ZPOOL_CONFIG_GUID
, &guid
);
214 return; /* don't intervene if it was taken offline */
216 #ifdef HAVE_LIBDEVMAPPER
217 is_dm
= dev_is_dm(path
);
219 zed_log_msg(LOG_INFO
, "zfs_process_add: pool '%s' vdev '%s', phys '%s'"
220 " wholedisk %d, dm %d (%llu)", zpool_get_name(zhp
), path
,
221 physpath
? physpath
: "NULL", wholedisk
, is_dm
,
222 (long long unsigned int)guid
);
225 * The VDEV guid is preferred for identification (gets passed in path)
228 (void) snprintf(fullpath
, sizeof (fullpath
), "%llu",
229 (long long unsigned int)guid
);
232 * otherwise use path sans partition suffix for whole disks
234 (void) strlcpy(fullpath
, path
, sizeof (fullpath
));
236 char *spath
= zfs_strip_partition(fullpath
);
238 zed_log_msg(LOG_INFO
, "%s: Can't alloc",
243 (void) strlcpy(fullpath
, spath
, sizeof (fullpath
));
249 * Attempt to online the device.
251 if (zpool_vdev_online(zhp
, fullpath
,
252 ZFS_ONLINE_CHECKREMOVE
| ZFS_ONLINE_UNSPARE
, &newstate
) == 0 &&
253 (newstate
== VDEV_STATE_HEALTHY
||
254 newstate
== VDEV_STATE_DEGRADED
)) {
255 zed_log_msg(LOG_INFO
, " zpool_vdev_online: vdev %s is %s",
256 fullpath
, (newstate
== VDEV_STATE_HEALTHY
) ?
257 "HEALTHY" : "DEGRADED");
262 * If the pool doesn't have the autoreplace property set, then attempt
263 * a true online (without the unspare flag), which will trigger a FMA
266 if (!is_dm
&& (!zpool_get_prop_int(zhp
, ZPOOL_PROP_AUTOREPLACE
, NULL
) ||
267 !wholedisk
|| physpath
== NULL
)) {
268 (void) zpool_vdev_online(zhp
, fullpath
, ZFS_ONLINE_FORCEFAULT
,
270 zed_log_msg(LOG_INFO
, " zpool_vdev_online: %s FORCEFAULT (%s)",
271 fullpath
, libzfs_error_description(g_zfshdl
));
276 * convert physical path into its current device node
278 (void) snprintf(rawpath
, sizeof (rawpath
), "%s%s", DEV_BYPATH_PATH
,
280 if (realpath(rawpath
, devpath
) == NULL
&& !is_dm
) {
281 zed_log_msg(LOG_INFO
, " realpath: %s failed (%s)",
282 rawpath
, strerror(errno
));
284 (void) zpool_vdev_online(zhp
, fullpath
, ZFS_ONLINE_FORCEFAULT
,
287 zed_log_msg(LOG_INFO
, " zpool_vdev_online: %s FORCEFAULT (%s)",
288 fullpath
, libzfs_error_description(g_zfshdl
));
292 if (!zpool_get_prop_int(zhp
, ZPOOL_PROP_AUTOREPLACE
, NULL
)) {
293 zed_log_msg(LOG_INFO
, "%s: Autoreplace is not enabled on this"
294 " pool, ignore disk.", __func__
);
298 /* Only autoreplace bad disks */
299 if ((vs
->vs_state
!= VDEV_STATE_DEGRADED
) &&
300 (vs
->vs_state
!= VDEV_STATE_FAULTED
) &&
301 (vs
->vs_state
!= VDEV_STATE_CANT_OPEN
)) {
305 nvlist_lookup_string(vdev
, "new_devid", &new_devid
);
308 /* Don't label device mapper or multipath disks. */
309 } else if (!labeled
) {
311 * we're auto-replacing a raw disk, so label it first
316 * If this is a request to label a whole disk, then attempt to
317 * write out the label. Before we can label the disk, we need
318 * to map the physical string that was matched on to the under
321 * If any part of this process fails, then do a force online
322 * to trigger a ZFS fault for the device (and any hot spare
325 leafname
= strrchr(devpath
, '/') + 1;
328 * If this is a request to label a whole disk, then attempt to
329 * write out the label.
331 if (zpool_label_disk(g_zfshdl
, zhp
, leafname
) != 0) {
332 zed_log_msg(LOG_INFO
, " zpool_label_disk: could not "
333 "label '%s' (%s)", leafname
,
334 libzfs_error_description(g_zfshdl
));
336 (void) zpool_vdev_online(zhp
, fullpath
,
337 ZFS_ONLINE_FORCEFAULT
, &newstate
);
342 * The disk labeling is asynchronous on Linux. Just record
343 * this label request and return as there will be another
344 * disk add event for the partition after the labeling is
347 device
= malloc(sizeof (pendingdev_t
));
348 (void) strlcpy(device
->pd_physpath
, physpath
,
349 sizeof (device
->pd_physpath
));
350 list_insert_tail(&g_device_list
, device
);
352 zed_log_msg(LOG_INFO
, " zpool_label_disk: async '%s' (%llu)",
353 leafname
, (u_longlong_t
) guid
);
355 return; /* resumes at EC_DEV_ADD.ESC_DISK for partition */
357 } else /* labeled */ {
358 boolean_t found
= B_FALSE
;
360 * match up with request above to label the disk
362 for (device
= list_head(&g_device_list
); device
!= NULL
;
363 device
= list_next(&g_device_list
, device
)) {
364 if (strcmp(physpath
, device
->pd_physpath
) == 0) {
365 list_remove(&g_device_list
, device
);
372 /* unexpected partition slice encountered */
373 (void) zpool_vdev_online(zhp
, fullpath
,
374 ZFS_ONLINE_FORCEFAULT
, &newstate
);
378 zed_log_msg(LOG_INFO
, " zpool_label_disk: resume '%s' (%llu)",
379 physpath
, (u_longlong_t
) guid
);
381 (void) snprintf(devpath
, sizeof (devpath
), "%s%s",
382 DEV_BYID_PATH
, new_devid
);
386 * Construct the root vdev to pass to zpool_vdev_attach(). While adding
387 * the entire vdev structure is harmless, we construct a reduced set of
388 * path/physpath/wholedisk to keep it simple.
390 if (nvlist_alloc(&nvroot
, NV_UNIQUE_NAME
, 0) != 0) {
391 zed_log_msg(LOG_WARNING
, "zfs_mod: nvlist_alloc out of memory");
394 if (nvlist_alloc(&newvd
, NV_UNIQUE_NAME
, 0) != 0) {
395 zed_log_msg(LOG_WARNING
, "zfs_mod: nvlist_alloc out of memory");
400 if (nvlist_add_string(newvd
, ZPOOL_CONFIG_TYPE
, VDEV_TYPE_DISK
) != 0 ||
401 nvlist_add_string(newvd
, ZPOOL_CONFIG_PATH
, path
) != 0 ||
402 nvlist_add_string(newvd
, ZPOOL_CONFIG_DEVID
, new_devid
) != 0 ||
403 (physpath
!= NULL
&& nvlist_add_string(newvd
,
404 ZPOOL_CONFIG_PHYS_PATH
, physpath
) != 0) ||
405 nvlist_add_uint64(newvd
, ZPOOL_CONFIG_WHOLE_DISK
, wholedisk
) != 0 ||
406 nvlist_add_string(nvroot
, ZPOOL_CONFIG_TYPE
, VDEV_TYPE_ROOT
) != 0 ||
407 nvlist_add_nvlist_array(nvroot
, ZPOOL_CONFIG_CHILDREN
, &newvd
,
409 zed_log_msg(LOG_WARNING
, "zfs_mod: unable to add nvlist pairs");
418 * auto replace a leaf disk at same physical location
420 ret
= zpool_vdev_attach(zhp
, fullpath
, path
, nvroot
, B_TRUE
);
422 zed_log_msg(LOG_INFO
, " zpool_vdev_replace: %s with %s (%s)",
423 fullpath
, path
, (ret
== 0) ? "no errors" :
424 libzfs_error_description(g_zfshdl
));
430 * Utility functions to find a vdev matching given criteria.
432 typedef struct dev_data
{
433 const char *dd_compare
;
435 zfs_process_func_t dd_func
;
437 boolean_t dd_islabeled
;
438 uint64_t dd_pool_guid
;
439 uint64_t dd_vdev_guid
;
440 const char *dd_new_devid
;
444 zfs_iter_vdev(zpool_handle_t
*zhp
, nvlist_t
*nvl
, void *data
)
446 dev_data_t
*dp
= data
;
452 * First iterate over any children.
454 if (nvlist_lookup_nvlist_array(nvl
, ZPOOL_CONFIG_CHILDREN
,
455 &child
, &children
) == 0) {
456 for (c
= 0; c
< children
; c
++)
457 zfs_iter_vdev(zhp
, child
[c
], data
);
461 /* once a vdev was matched and processed there is nothing left to do */
466 * Match by GUID if available otherwise fallback to devid or physical
468 if (dp
->dd_vdev_guid
!= 0) {
471 if (nvlist_lookup_uint64(nvl
, ZPOOL_CONFIG_GUID
,
472 &guid
) != 0 || guid
!= dp
->dd_vdev_guid
) {
475 zed_log_msg(LOG_INFO
, " zfs_iter_vdev: matched on %llu", guid
);
476 dp
->dd_found
= B_TRUE
;
478 } else if (dp
->dd_compare
!= NULL
) {
480 * NOTE: On Linux there is an event for partition, so unlike
481 * illumos, substring matching is not required to accomodate
482 * the partition suffix. An exact match will be present in
483 * the dp->dd_compare value.
485 if (nvlist_lookup_string(nvl
, dp
->dd_prop
, &path
) != 0 ||
486 strcmp(dp
->dd_compare
, path
) != 0)
489 zed_log_msg(LOG_INFO
, " zfs_iter_vdev: matched %s on %s",
491 dp
->dd_found
= B_TRUE
;
493 /* pass the new devid for use by replacing code */
494 if (dp
->dd_new_devid
!= NULL
) {
495 (void) nvlist_add_string(nvl
, "new_devid",
500 (dp
->dd_func
)(zhp
, nvl
, dp
->dd_islabeled
);
504 zfs_enable_ds(void *arg
)
506 unavailpool_t
*pool
= (unavailpool_t
*)arg
;
508 assert(pool
->uap_enable_tid
= pthread_self());
510 (void) zpool_enable_datasets(pool
->uap_zhp
, NULL
, 0);
511 zpool_close(pool
->uap_zhp
);
512 pool
->uap_zhp
= NULL
;
514 /* Note: zfs_slm_fini() will cleanup this pool entry on exit */
519 zfs_iter_pool(zpool_handle_t
*zhp
, void *data
)
521 nvlist_t
*config
, *nvl
;
522 dev_data_t
*dp
= data
;
526 zed_log_msg(LOG_INFO
, "zfs_iter_pool: evaluating vdevs on %s (by %s)",
527 zpool_get_name(zhp
), dp
->dd_vdev_guid
? "GUID" : dp
->dd_prop
);
530 * For each vdev in this pool, look for a match to apply dd_func
532 if ((config
= zpool_get_config(zhp
, NULL
)) != NULL
) {
533 if (dp
->dd_pool_guid
== 0 ||
534 (nvlist_lookup_uint64(config
, ZPOOL_CONFIG_POOL_GUID
,
535 &pool_guid
) == 0 && pool_guid
== dp
->dd_pool_guid
)) {
536 (void) nvlist_lookup_nvlist(config
,
537 ZPOOL_CONFIG_VDEV_TREE
, &nvl
);
538 zfs_iter_vdev(zhp
, nvl
, data
);
543 * if this pool was originally unavailable,
544 * then enable its datasets asynchronously
546 if (g_enumeration_done
) {
547 for (pool
= list_head(&g_pool_list
); pool
!= NULL
;
548 pool
= list_next(&g_pool_list
, pool
)) {
550 if (pool
->uap_enable_tid
!= 0)
551 continue; /* entry already processed */
552 if (strcmp(zpool_get_name(zhp
),
553 zpool_get_name(pool
->uap_zhp
)))
555 if (zfs_toplevel_state(zhp
) >= VDEV_STATE_DEGRADED
) {
556 /* send to a background thread; keep on list */
557 (void) pthread_create(&pool
->uap_enable_tid
,
558 NULL
, zfs_enable_ds
, pool
);
565 return (dp
->dd_found
); /* cease iteration after a match */
569 * Given a physical device location, iterate over all
570 * (pool, vdev) pairs which correspond to that location.
573 devphys_iter(const char *physical
, const char *devid
, zfs_process_func_t func
,
576 dev_data_t data
= { 0 };
578 data
.dd_compare
= physical
;
580 data
.dd_prop
= ZPOOL_CONFIG_PHYS_PATH
;
581 data
.dd_found
= B_FALSE
;
582 data
.dd_islabeled
= is_slice
;
583 data
.dd_new_devid
= devid
; /* used by auto replace code */
585 (void) zpool_iter(g_zfshdl
, zfs_iter_pool
, &data
);
587 return (data
.dd_found
);
591 * Given a device identifier, find any vdevs with a matching devid.
592 * On Linux we can match devid directly which is always a whole disk.
595 devid_iter(const char *devid
, zfs_process_func_t func
, boolean_t is_slice
)
597 dev_data_t data
= { 0 };
599 data
.dd_compare
= devid
;
601 data
.dd_prop
= ZPOOL_CONFIG_DEVID
;
602 data
.dd_found
= B_FALSE
;
603 data
.dd_islabeled
= is_slice
;
604 data
.dd_new_devid
= devid
;
606 (void) zpool_iter(g_zfshdl
, zfs_iter_pool
, &data
);
608 return (data
.dd_found
);
612 * Handle a EC_DEV_ADD.ESC_DISK event.
615 * Expects: DEV_PHYS_PATH string in schema
616 * Matches: vdev's ZPOOL_CONFIG_PHYS_PATH or ZPOOL_CONFIG_DEVID
618 * path: '/dev/dsk/c0t1d0s0' (persistent)
619 * devid: 'id1,sd@SATA_____Hitachi_HDS72101______JP2940HZ3H74MC/a'
620 * phys_path: '/pci@0,0/pci103c,1609@11/disk@1,0:a'
623 * provides: DEV_PHYS_PATH and DEV_IDENTIFIER strings in schema
624 * Matches: vdev's ZPOOL_CONFIG_PHYS_PATH or ZPOOL_CONFIG_DEVID
626 * path: '/dev/sdc1' (not persistent)
627 * devid: 'ata-SAMSUNG_HD204UI_S2HGJD2Z805891-part1'
628 * phys_path: 'pci-0000:04:00.0-sas-0x4433221106000000-lun-0'
631 zfs_deliver_add(nvlist_t
*nvl
, boolean_t is_lofi
)
633 char *devpath
= NULL
, *devid
;
637 * Expecting a devid string and an optional physical location
639 if (nvlist_lookup_string(nvl
, DEV_IDENTIFIER
, &devid
) != 0)
642 (void) nvlist_lookup_string(nvl
, DEV_PHYS_PATH
, &devpath
);
644 is_slice
= (nvlist_lookup_boolean(nvl
, DEV_IS_PART
) == 0);
646 zed_log_msg(LOG_INFO
, "zfs_deliver_add: adding %s (%s) (is_slice %d)",
647 devid
, devpath
? devpath
: "NULL", is_slice
);
650 * Iterate over all vdevs looking for a match in the folllowing order:
651 * 1. ZPOOL_CONFIG_DEVID (identifies the unique disk)
652 * 2. ZPOOL_CONFIG_PHYS_PATH (identifies disk physical location).
654 * For disks, we only want to pay attention to vdevs marked as whole
655 * disks. For multipath devices does whole disk apply? (TBD).
657 if (!devid_iter(devid
, zfs_process_add
, is_slice
) && devpath
!= NULL
) {
659 (void) devphys_iter(devpath
, devid
, zfs_process_add
,
668 * Called when we receive a VDEV_CHECK event, which indicates a device could not
669 * be opened during initial pool open, but the autoreplace property was set on
670 * the pool. In this case, we treat it as if it were an add event.
673 zfs_deliver_check(nvlist_t
*nvl
)
675 dev_data_t data
= { 0 };
677 if (nvlist_lookup_uint64(nvl
, ZFS_EV_POOL_GUID
,
678 &data
.dd_pool_guid
) != 0 ||
679 nvlist_lookup_uint64(nvl
, ZFS_EV_VDEV_GUID
,
680 &data
.dd_vdev_guid
) != 0 ||
681 data
.dd_vdev_guid
== 0)
684 zed_log_msg(LOG_INFO
, "zfs_deliver_check: pool '%llu', vdev %llu",
685 data
.dd_pool_guid
, data
.dd_vdev_guid
);
687 data
.dd_func
= zfs_process_add
;
689 (void) zpool_iter(g_zfshdl
, zfs_iter_pool
, &data
);
695 zfsdle_vdev_online(zpool_handle_t
*zhp
, void *data
)
697 char *devname
= data
;
698 boolean_t avail_spare
, l2cache
;
699 vdev_state_t newstate
;
702 zed_log_msg(LOG_INFO
, "zfsdle_vdev_online: searching for '%s' in '%s'",
703 devname
, zpool_get_name(zhp
));
705 if ((tgt
= zpool_find_vdev_by_physpath(zhp
, devname
,
706 &avail_spare
, &l2cache
, NULL
)) != NULL
) {
707 char *path
, fullpath
[MAXPATHLEN
];
708 uint64_t wholedisk
= 0ULL;
710 verify(nvlist_lookup_string(tgt
, ZPOOL_CONFIG_PATH
,
712 verify(nvlist_lookup_uint64(tgt
, ZPOOL_CONFIG_WHOLE_DISK
,
715 (void) strlcpy(fullpath
, path
, sizeof (fullpath
));
717 char *spath
= zfs_strip_partition(fullpath
);
719 zed_log_msg(LOG_INFO
, "%s: Can't alloc",
724 (void) strlcpy(fullpath
, spath
, sizeof (fullpath
));
728 * We need to reopen the pool associated with this
729 * device so that the kernel can update the size
730 * of the expanded device.
732 (void) zpool_reopen(zhp
);
735 if (zpool_get_prop_int(zhp
, ZPOOL_PROP_AUTOEXPAND
, NULL
)) {
736 zed_log_msg(LOG_INFO
, "zfsdle_vdev_online: setting "
737 "device '%s' to ONLINE state in pool '%s'",
738 fullpath
, zpool_get_name(zhp
));
739 if (zpool_get_state(zhp
) != POOL_STATE_UNAVAIL
)
740 (void) zpool_vdev_online(zhp
, fullpath
, 0,
751 * This function handles the ESC_DEV_DLE event.
754 zfs_deliver_dle(nvlist_t
*nvl
)
758 if (nvlist_lookup_string(nvl
, DEV_PHYS_PATH
, &devname
) != 0) {
759 zed_log_msg(LOG_INFO
, "zfs_deliver_event: no physpath");
763 if (zpool_iter(g_zfshdl
, zfsdle_vdev_online
, devname
) != 1) {
764 zed_log_msg(LOG_INFO
, "zfs_deliver_event: device '%s' not "
772 * syseventd daemon module event handler
774 * Handles syseventd daemon zfs device related events:
776 * EC_DEV_ADD.ESC_DISK
777 * EC_DEV_STATUS.ESC_DEV_DLE
778 * EC_ZFS.ESC_ZFS_VDEV_CHECK
780 * Note: assumes only one thread active at a time (not thread safe)
783 zfs_slm_deliver_event(const char *class, const char *subclass
, nvlist_t
*nvl
)
786 boolean_t is_lofi
= B_FALSE
, is_check
= B_FALSE
, is_dle
= B_FALSE
;
788 if (strcmp(class, EC_DEV_ADD
) == 0) {
790 * We're mainly interested in disk additions, but we also listen
791 * for new loop devices, to allow for simplified testing.
793 if (strcmp(subclass
, ESC_DISK
) == 0)
795 else if (strcmp(subclass
, ESC_LOFI
) == 0)
801 } else if (strcmp(class, EC_ZFS
) == 0 &&
802 strcmp(subclass
, ESC_ZFS_VDEV_CHECK
) == 0) {
804 * This event signifies that a device failed to open
805 * during pool load, but the 'autoreplace' property was
806 * set, so we should pretend it's just been added.
809 } else if (strcmp(class, EC_DEV_STATUS
) == 0 &&
810 strcmp(subclass
, ESC_DEV_DLE
) == 0) {
817 ret
= zfs_deliver_dle(nvl
);
819 ret
= zfs_deliver_check(nvl
);
821 ret
= zfs_deliver_add(nvl
, is_lofi
);
828 zfs_enum_pools(void *arg
)
830 (void) zpool_iter(g_zfshdl
, zfs_unavail_pool
, (void *)&g_pool_list
);
832 * Linux - instead of using a thread pool, each list entry
833 * will spawn a thread when an unavailable pool transitions
834 * to available. zfs_slm_fini will wait for these threads.
836 g_enumeration_done
= B_TRUE
;
841 * called from zed daemon at startup
843 * sent messages from zevents or udev monitor
845 * For now, each agent has it's own libzfs instance
848 zfs_slm_init(libzfs_handle_t
*zfs_hdl
)
850 if ((g_zfshdl
= libzfs_init()) == NULL
)
854 * collect a list of unavailable pools (asynchronously,
855 * since this can take a while)
857 list_create(&g_pool_list
, sizeof (struct unavailpool
),
858 offsetof(struct unavailpool
, uap_node
));
860 if (pthread_create(&g_zfs_tid
, NULL
, zfs_enum_pools
, NULL
) != 0) {
861 list_destroy(&g_pool_list
);
865 list_create(&g_device_list
, sizeof (struct pendingdev
),
866 offsetof(struct pendingdev
, pd_node
));
875 pendingdev_t
*device
;
877 /* wait for zfs_enum_pools thread to complete */
878 (void) pthread_join(g_zfs_tid
, NULL
);
880 while ((pool
= (list_head(&g_pool_list
))) != NULL
) {
882 * each pool entry has two possibilities
883 * 1. was made available (so wait for zfs_enable_ds thread)
884 * 2. still unavailable (just close the pool)
886 if (pool
->uap_enable_tid
)
887 (void) pthread_join(pool
->uap_enable_tid
, NULL
);
888 else if (pool
->uap_zhp
!= NULL
)
889 zpool_close(pool
->uap_zhp
);
891 list_remove(&g_pool_list
, pool
);
894 list_destroy(&g_pool_list
);
896 while ((device
= (list_head(&g_device_list
))) != NULL
) {
897 list_remove(&g_device_list
, device
);
900 list_destroy(&g_device_list
);
902 libzfs_fini(g_zfshdl
);
906 zfs_slm_event(const char *class, const char *subclass
, nvlist_t
*nvl
)
908 static pthread_mutex_t serialize
= PTHREAD_MUTEX_INITIALIZER
;
911 * Serialize incoming events from zfs or libudev sources
913 (void) pthread_mutex_lock(&serialize
);
914 zed_log_msg(LOG_INFO
, "zfs_slm_event: %s.%s", class, subclass
);
915 (void) zfs_slm_deliver_event(class, subclass
, nvl
);
916 (void) pthread_mutex_unlock(&serialize
);