2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2007 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version two of the GNU General Public
10 License as published by the Free Software Foundation and included
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of John Walker.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
29 * Drive reservation functions for Storage Daemon
33 * Split from job.c and acquire.c June 2005
42 #define jid() ((int)get_jobid_from_tid())
44 const int dbglvl = 50;
46 static dlist *vol_list = NULL;
47 static brwlock_t reservation_lock;
48 static brwlock_t vol_list_lock;
50 /* Forward referenced functions */
51 static int can_reserve_drive(DCR *dcr, RCTX &rctx);
52 static int reserve_device(RCTX &rctx);
53 static bool reserve_device_for_read(DCR *dcr);
54 static bool reserve_device_for_append(DCR *dcr, RCTX &rctx);
55 static bool use_storage_cmd(JCR *jcr);
56 static void queue_reserve_message(JCR *jcr);
58 /* Requests from the Director daemon */
59 static char use_storage[] = "use storage=%127s media_type=%127s "
60 "pool_name=%127s pool_type=%127s append=%d copy=%d stripe=%d\n";
61 static char use_device[] = "use device=%127s\n";
63 /* Responses sent to Director daemon */
64 static char OK_device[] = "3000 OK use device device=%s\n";
65 static char NO_device[] = "3924 Device \"%s\" not in SD Device resources.\n";
66 static char BAD_use[] = "3913 Bad use command: %s\n";
68 bool use_cmd(JCR *jcr)
71 * Get the device, media, and pool information
73 if (!use_storage_cmd(jcr)) {
74 set_jcr_job_status(jcr, JS_ErrorTerminated);
75 memset(jcr->sd_auth_key, 0, strlen(jcr->sd_auth_key));
81 static int my_compare(void *item1, void *item2)
83 return strcmp(((VOLRES *)item1)->vol_name, ((VOLRES *)item2)->vol_name);
87 void init_reservations_lock()
90 if ((errstat=rwl_init(&reservation_lock)) != 0) {
92 Emsg1(M_ABORT, 0, _("Unable to initialize reservation lock. ERR=%s\n"),
93 be.bstrerror(errstat));
96 if ((errstat=rwl_init(&vol_list_lock)) != 0) {
98 Emsg1(M_ABORT, 0, _("Unable to initialize volume list lock. ERR=%s\n"),
99 be.bstrerror(errstat));
103 void term_reservations_lock()
105 rwl_destroy(&reservation_lock);
106 rwl_destroy(&vol_list_lock);
109 int reservations_lock_count = 0;
111 /* This applies to a drive and to Volumes */
112 void _lock_reservations()
115 reservations_lock_count++;
116 if ((errstat=rwl_writelock(&reservation_lock)) != 0) {
118 Emsg2(M_ABORT, 0, "rwl_writelock failure. stat=%d: ERR=%s\n",
119 errstat, be.bstrerror(errstat));
123 void _unlock_reservations()
126 reservations_lock_count--;
127 if ((errstat=rwl_writeunlock(&reservation_lock)) != 0) {
129 Emsg2(M_ABORT, 0, "rwl_writeunlock failure. stat=%d: ERR=%s\n",
130 errstat, be.bstrerror(errstat));
134 int vol_list_lock_count = 0;
139 vol_list_lock_count++;
140 if ((errstat=rwl_writelock(&vol_list_lock)) != 0) {
142 Emsg2(M_ABORT, 0, "rwl_writelock failure. stat=%d: ERR=%s\n",
143 errstat, be.bstrerror(errstat));
147 void _unlock_volumes()
150 vol_list_lock_count--;
151 if ((errstat=rwl_writeunlock(&vol_list_lock)) != 0) {
153 Emsg2(M_ABORT, 0, "rwl_writeunlock failure. stat=%d: ERR=%s\n",
154 errstat, be.bstrerror(errstat));
160 * List Volumes -- this should be moved to status.c
167 static void debug_list_volumes(const char *imsg)
170 POOL_MEM msg(PM_MESSAGE);
173 foreach_dlist(vol, vol_list) {
175 Mmsg(msg, "List from %s: %s at %p on device %s\n", imsg,
176 vol->vol_name, vol->vol_name, vol->dev->print_name());
178 Mmsg(msg, "List from %s: %s at %p no dev\n", imsg, vol->vol_name, vol->vol_name);
180 Dmsg2(dbglvl, "jid=%u %s", jid(), msg.c_str());
185 foreach_dlist(vol, vol_list) {
186 if (vol->dev == dev) {
187 Dmsg0(000, "Two Volumes on same device.\n");
194 // Dmsg2(dbglvl, "List from %s: %d volumes\n", imsg, count);
200 * List Volumes -- this should be moved to status.c
202 void list_volumes(void sendit(const char *msg, int len, void *sarg), void *arg)
205 POOL_MEM msg(PM_MESSAGE);
209 foreach_dlist(vol, vol_list) {
210 DEVICE *dev = vol->dev;
212 len = Mmsg(msg, "%s on device %s\n", vol->vol_name, dev->print_name());
213 sendit(msg.c_str(), len, arg);
214 len = Mmsg(msg, " Reader=%d writers=%d reserved=%d\n", dev->can_read()?1:0,
215 dev->num_writers, dev->reserved_device);
216 sendit(msg.c_str(), len, arg);
218 len = Mmsg(msg, "%s no dev\n", vol->vol_name);
219 sendit(msg.c_str(), len, arg);
226 * Create a Volume item to put in the Volume list
227 * Ensure that the device points to it.
229 static VOLRES *new_vol_item(DCR *dcr, const char *VolumeName)
232 vol = (VOLRES *)malloc(sizeof(VOLRES));
233 memset(vol, 0, sizeof(VOLRES));
234 vol->vol_name = bstrdup(VolumeName);
236 Dmsg4(dbglvl, "jid=%u new Vol=%s at %p dev=%s\n", (int)dcr->jcr->JobId,
237 VolumeName, vol->vol_name, vol->dev->print_name());
241 static void free_vol_item(VOLRES *vol)
245 vol->dev->vol = NULL;
252 * Put a new Volume entry in the Volume list. This
253 * effectively reserves the volume so that it will
254 * not be mounted again.
256 * If the device has any current volume associated with it,
257 * and it is a different Volume, and the device is not busy,
258 * we release the old Volume item and insert the new one.
260 * It is assumed that the device is free and locked so that
261 * we can change the device structure.
263 * Some details of the Volume list handling:
265 * 1. The Volume list entry must be attached to the drive (rather than
266 * attached to a job as it currently is. I.e. the drive that "owns"
267 * the volume (reserved, in use, mounted)
268 * must point to the volume (still to be maintained in a list).
270 * 2. The Volume is entered in the list when a drive is reserved.
272 * 3. When a drive is in use, the device code must appropriately update the
273 * volume name as it changes (currently the list is static -- an entry is
274 * removed when the Volume is no longer reserved, in use or mounted).
275 * The new code must keep the same list entry as long as the drive
276 * has any volume associated with it but the volume name in the list
277 * must be updated when the drive has a different volume mounted.
279 * 4. A job that has reserved a volume, can un-reserve the volume, and if the
280 * volume is not mounted, and not reserved, and not in use, it will be
281 * removed from the list.
283 * 5. If a job wants to reserve a drive with a different Volume from the one on
284 * the drive, it can re-use the drive for the new Volume.
286 * 6. If a job wants a Volume that is in a different drive, it can either use the
287 * other drive or take the volume, only if the other drive is not in use or
290 * One nice aspect of this is that the reserve use count and the writer use count
291 * already exist and are correctly programmed and will need no changes -- use
292 * counts are always very tricky.
294 * The old code had a concept of "reserving" a Volume, but it needs to be changed
295 * to reserving and using a drive. A volume is must be attached to (owned by) a
296 * drive and can move from drive to drive or be unused given certain specific
297 * conditions of the drive. The key is that the drive must "own" the Volume.
298 * The old code has the job (dcr) owning the volume (more or less). The job is
299 * to change the insertion and removal of the volumes from the list to be based
300 * on the drive rather than the job.
302 * Return: VOLRES entry on success
303 * NULL volume busy on another drive
305 VOLRES *reserve_volume(DCR *dcr, const char *VolumeName)
308 DEVICE *dev = dcr->dev;
312 Dmsg2(dbglvl, "jid=%u reserve_volume %s\n", jid(), VolumeName);
314 * We lock the reservations system here to ensure
315 * when adding a new volume that no newly scheduled
316 * job can reserve it.
319 debug_list_volumes("begin reserve_volume");
321 * First, remove any old volume attached to this device as it
327 * Make sure we don't remove the current volume we are inserting
328 * because it was probably inserted by another job.
330 if (strcmp(vol->vol_name, VolumeName) == 0) {
331 goto get_out; /* Volume already on this device */
333 Dmsg3(dbglvl, "jid=%u reserve_vol free vol=%s at %p\n",
334 (int)dcr->jcr->JobId, vol->vol_name, vol->vol_name);
335 debug_list_volumes("reserve_vol free");
336 vol_list->remove(vol);
341 /* Create a new Volume entry */
342 nvol = new_vol_item(dcr, VolumeName);
345 * Now try to insert the new Volume
347 vol = (VOLRES *)vol_list->binary_insert(nvol, my_compare);
349 Dmsg3(dbglvl, "jid=%u Found vol=%s dev-same=%d\n", jid(), vol->vol_name, dev==vol->dev);
351 * At this point, a Volume with this name already is in the list,
352 * so we simply release our new Volume entry. Note, this should
353 * only happen if we are moving the volume from one drive to another.
355 Dmsg3(dbglvl, "jid=%u reserve_vol free-tmp vol=%s at %p\n",
356 (int)dcr->jcr->JobId, vol->vol_name, vol->vol_name);
358 * Clear dev pointer so that free_vol_item() doesn't
359 * take away our volume.
361 nvol->dev = NULL; /* don't zap dev entry */
364 /* Check if we are trying to use the Volume on a different drive */
365 if (dev != vol->dev) {
366 /* Caller wants to switch Volume to another device */
367 if (!vol->dev->is_busy()) {
368 /* OK to move it -- I'm not sure this will work */
369 Dmsg4(dbglvl, "==== jid=%u Swap vol=%s from dev=%s to %s\n", jid(), VolumeName,
370 vol->dev->print_name(), dev->print_name());
371 vol->dev->vol = NULL; /* take vol from old drive */
372 vol->dev->VolHdr.VolumeName[0] = 0;
373 vol->dev = dev; /* point vol at new drive */
374 dev->vol = vol; /* point dev at vol */
375 dev->VolHdr.VolumeName[0] = 0;
377 Dmsg4(dbglvl, "jid=%u Volume busy could not swap vol=%s from dev=%s to %s\n",
378 jid(), VolumeName, vol->dev->print_name(), dev->print_name());
379 vol = NULL; /* device busy */
386 debug_list_volumes("end new volume");
392 * Search for a Volume name in the Volume list.
394 * Returns: VOLRES entry on success
395 * NULL if the Volume is not in the list
397 VOLRES *find_volume(DCR *dcr)
400 /* Do not lock reservations here */
402 vol.vol_name = bstrdup(dcr->VolumeName);
403 fvol = (VOLRES *)vol_list->binary_search(&vol, my_compare);
405 Dmsg3(dbglvl, "jid=%u find_vol=%s found=%d\n", jid(), dcr->VolumeName, fvol!=NULL);
406 debug_list_volumes("find_volume");
412 * Remove any reservation from a drive and tell the system
413 * that the volume is unused at least by us.
415 void unreserve_device(DCR *dcr)
417 DEVICE *dev = dcr->dev;
419 if (dcr->reserved_device) {
420 dcr->reserved_device = false;
421 dev->reserved_device--;
422 Dmsg3(dbglvl, "jid=%u Dec reserve=%d dev=%s\n", jid(), dev->reserved_device, dev->print_name());
423 dcr->reserved_device = false;
424 /* If we set read mode in reserving, remove it */
425 if (dev->can_read()) {
428 if (dev->num_writers < 0) {
429 Jmsg1(dcr->jcr, M_ERROR, 0, _("Hey! num_writers=%d!!!!\n"), dev->num_writers);
430 dev->num_writers = 0;
439 * Free a Volume from the Volume list if it is no longer used
441 * Returns: true if the Volume found and removed from the list
442 * false if the Volume is not in the list or is in use
444 bool volume_unused(DCR *dcr)
446 DEVICE *dev = dcr->dev;
448 if (dev->vol == NULL) {
449 Dmsg2(dbglvl, "jid=%u vol_unused: no vol on %s\n", (int)dcr->jcr->JobId, dev->print_name());
450 debug_list_volumes("null vol cannot unreserve_volume");
454 if (dev->is_busy()) {
455 Dmsg2(dbglvl, "jid=%u vol_unused: no vol on %s\n", (int)dcr->jcr->JobId, dev->print_name());
456 debug_list_volumes("dev busy cannot unreserve_volume");
461 * If this is a tape, we do not free the volume, rather we wait
462 * until the autoloader unloads it, or until another tape is
463 * explicitly read in this drive. This allows the SD to remember
464 * where the tapes are or last were.
466 if (dev->is_tape() || dev->is_autochanger()) {
469 return free_volume(dev);
474 * Unconditionally release the volume
476 bool free_volume(DEVICE *dev)
480 if (dev->vol == NULL) {
481 Dmsg2(dbglvl, "jid=%u No vol on dev %s\n", jid(), dev->print_name());
487 vol_list->remove(vol);
488 Dmsg3(dbglvl, "jid=%u free_volume %s dev=%s\n", jid(), vol->vol_name, dev->print_name());
490 debug_list_volumes("free_volume");
496 /* Create the Volume list */
497 void create_volume_list()
500 if (vol_list == NULL) {
501 vol_list = New(dlist(vol, &vol->link));
505 /* Release all Volumes from the list */
506 void free_volume_list()
513 foreach_dlist(vol, vol_list) {
515 Dmsg3(dbglvl, "jid=%u free vol_list Volume=%s dev=%s\n", jid(),
516 vol->vol_name, vol->dev->print_name());
518 Dmsg3(dbglvl, "jid=%u free vol_list Volume=%s dev=%p\n", jid(),
519 vol->vol_name, vol->dev);
522 vol->vol_name = NULL;
529 bool is_volume_in_use(DCR *dcr)
531 VOLRES *vol = find_volume(dcr);
533 Dmsg2(dbglvl, "jid=%u Vol=%s not in use.\n", jid(), dcr->VolumeName);
534 return false; /* vol not in list */
536 ASSERT(vol->dev != NULL);
538 if (dcr->dev == vol->dev) { /* same device OK */
539 Dmsg2(dbglvl, "jid=%u Vol=%s on same dev.\n", jid(), dcr->VolumeName);
542 Dmsg4(dbglvl, "jid=%u Vol=%s on %s we have %s\n", jid(), dcr->VolumeName,
543 vol->dev->print_name(), dcr->dev->print_name());
545 if (!vol->dev->is_busy()) {
546 Dmsg3(dbglvl, "jid=%u Vol=%s dev=%s not busy.\n", jid(), dcr->VolumeName, vol->dev->print_name());
549 Dmsg3(dbglvl, "jid=%u Vol=%s dev=%s busy.\n", jid(), dcr->VolumeName, vol->dev->print_name());
551 Dmsg3(dbglvl, "jid=%u Vol=%s in use by %s.\n", jid(), dcr->VolumeName, vol->dev->print_name());
557 * We get the following type of information:
559 * use storage=xxx media_type=yyy pool_name=xxx pool_type=yyy append=1 copy=0 strip=0
563 * use storage=xxx media_type=yyy pool_name=xxx pool_type=yyy append=0 copy=0 strip=0
567 static bool use_storage_cmd(JCR *jcr)
569 POOL_MEM store_name, dev_name, media_type, pool_name, pool_type;
570 BSOCK *dir = jcr->dir_bsock;
580 memset(&rctx, 0, sizeof(RCTX));
583 * If there are multiple devices, the director sends us
584 * use_device for each device that it wants to use.
586 dirstore = New(alist(10, not_owned_by_alist));
587 msgs = jcr->reserve_msgs = New(alist(10, not_owned_by_alist));
589 Dmsg2(dbglvl, "jid=%u <dird: %s", jid(), dir->msg);
590 ok = sscanf(dir->msg, use_storage, store_name.c_str(),
591 media_type.c_str(), pool_name.c_str(),
592 pool_type.c_str(), &append, &Copy, &Stripe) == 7;
597 jcr->write_store = dirstore;
599 jcr->read_store = dirstore;
601 rctx.append = append;
602 unbash_spaces(store_name);
603 unbash_spaces(media_type);
604 unbash_spaces(pool_name);
605 unbash_spaces(pool_type);
606 store = new DIRSTORE;
607 dirstore->append(store);
608 memset(store, 0, sizeof(DIRSTORE));
609 store->device = New(alist(10));
610 bstrncpy(store->name, store_name, sizeof(store->name));
611 bstrncpy(store->media_type, media_type, sizeof(store->media_type));
612 bstrncpy(store->pool_name, pool_name, sizeof(store->pool_name));
613 bstrncpy(store->pool_type, pool_type, sizeof(store->pool_type));
614 store->append = append;
616 /* Now get all devices */
617 while (dir->recv() >= 0) {
618 Dmsg2(dbglvl, "jid=%u <dird device: %s", jid(), dir->msg);
619 ok = sscanf(dir->msg, use_device, dev_name.c_str()) == 1;
623 unbash_spaces(dev_name);
624 store->device->append(bstrdup(dev_name.c_str()));
626 } while (ok && dir->recv() >= 0);
628 /* Developer debug code */
630 if (debug_level >= dbglvl) {
631 foreach_alist(store, dirstore) {
632 Dmsg6(dbglvl, "jid=%u Storage=%s media_type=%s pool=%s pool_type=%s append=%d\n",
633 (int)rctx.jcr->JobId,
634 store->name, store->media_type, store->pool_name,
635 store->pool_type, store->append);
636 foreach_alist(device_name, store->device) {
637 Dmsg2(dbglvl, "jid=%u Device=%s\n", jid(), device_name);
642 init_jcr_device_wait_timers(jcr);
643 jcr->dcr = new_dcr(jcr, NULL, NULL); /* get a dcr */
645 BSOCK *dir = jcr->dir_bsock;
646 dir->fsend(_("3939 Could not get dcr\n"));
647 Dmsg1(dbglvl, ">dird: %s", dir->msg);
651 * At this point, we have a list of all the Director's Storage
652 * resources indicated for this Job, which include Pool, PoolType,
653 * storage name, and Media type.
654 * Then for each of the Storage resources, we have a list of
655 * device names that were given.
657 * Wiffle through them and find one that can do the backup.
660 int wait_for_device_retries = 0;
663 rctx.notify_dir = true;
666 for ( ; !fail && !job_canceled(jcr); ) {
667 while ((msg = (char *)msgs->pop())) {
670 rctx.suitable_device = false;
671 rctx.have_volume = false;
672 rctx.VolumeName[0] = 0;
673 rctx.any_drive = false;
674 if (!jcr->PreferMountedVols) {
676 * Here we try to find a drive that is not used.
677 * This will maximize the use of available drives.
680 rctx.num_writers = 20000000; /* start with impossible number */
681 rctx.low_use_drive = NULL;
682 rctx.PreferMountedVols = false;
683 rctx.exact_match = false;
684 rctx.autochanger_only = true;
685 Dmsg6(dbglvl, "jid=%u PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
686 (int)rctx.jcr->JobId,
687 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
688 rctx.autochanger_only, rctx.any_drive);
689 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
692 /* Look through all drives possibly for low_use drive */
693 if (rctx.low_use_drive) {
694 rctx.try_low_use_drive = true;
695 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
698 rctx.try_low_use_drive = false;
700 rctx.autochanger_only = false;
701 Dmsg6(dbglvl, "jid=%u PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
702 (int)rctx.jcr->JobId,
703 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
704 rctx.autochanger_only, rctx.any_drive);
705 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
710 * Now we look for a drive that may or may not be in
713 /* Look for an exact Volume match all drives */
714 rctx.PreferMountedVols = true;
715 rctx.exact_match = true;
716 rctx.autochanger_only = false;
717 Dmsg6(dbglvl, "jid=%u PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
718 (int)rctx.jcr->JobId,
719 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
720 rctx.autochanger_only, rctx.any_drive);
721 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
724 /* Look for any mounted drive */
725 rctx.exact_match = false;
726 Dmsg6(dbglvl, "jid=%u PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
727 (int)rctx.jcr->JobId,
728 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
729 rctx.autochanger_only, rctx.any_drive);
730 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
734 rctx.any_drive = true;
735 Dmsg6(dbglvl, "jid=%u PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
736 (int)rctx.jcr->JobId,
737 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
738 rctx.autochanger_only, rctx.any_drive);
739 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
742 /* Keep reservations locked *except* during wait_for_device() */
743 unlock_reservations();
745 * The idea of looping on repeat a few times it to ensure
746 * that if there is some subtle timing problem between two
747 * jobs, we will simply try again, and most likely succeed.
748 * This can happen if one job reserves a drive or finishes using
749 * a drive at the same time a second job wants it.
751 if (repeat++ > 1) { /* try algorithm 3 times */
752 bmicrosleep(30, 0); /* wait a bit */
753 Dmsg1(dbglvl, "jid=%u repeat reserve algorithm\n", (int)rctx.jcr->JobId);
754 } else if (!rctx.suitable_device || !wait_for_device(jcr, wait_for_device_retries)) {
755 Dmsg1(dbglvl, "jid=%u Fail. !suitable_device || !wait_for_device\n",
756 (int)rctx.jcr->JobId);
760 dir->signal(BNET_HEARTBEAT); /* Inform Dir that we are alive */
762 unlock_reservations();
765 * If we get here, there are no suitable devices available, which
766 * means nothing configured. If a device is suitable but busy
767 * with another Volume, we will not come here.
769 unbash_spaces(dir->msg);
770 pm_strcpy(jcr->errmsg, dir->msg);
771 Jmsg(jcr, M_INFO, 0, _("Failed command: %s\n"), jcr->errmsg);
772 Jmsg(jcr, M_FATAL, 0, _("\n"
773 " Device \"%s\" with MediaType \"%s\" requested by DIR not found in SD Device resources.\n"),
774 dev_name.c_str(), media_type.c_str());
775 dir->fsend(NO_device, dev_name.c_str());
777 Dmsg2(dbglvl, "jid=%u >dird: %s", jid(), dir->msg);
780 unbash_spaces(dir->msg);
781 pm_strcpy(jcr->errmsg, dir->msg);
782 Jmsg(jcr, M_FATAL, 0, _("Failed command: %s\n"), jcr->errmsg);
783 dir->fsend(BAD_use, jcr->errmsg);
784 Dmsg2(dbglvl, "jid=%u >dird: %s", jid(), dir->msg);
791 void release_msgs(JCR *jcr)
793 alist *msgs = jcr->reserve_msgs;
800 while ((msg = (char *)msgs->pop())) {
804 jcr->reserve_msgs = NULL;
805 unlock_reservations();
809 * Walk through the autochanger resources and check if
810 * the volume is in one of them.
812 * Returns: true if volume is in device
815 static bool is_vol_in_autochanger(RCTX &rctx, VOLRES *vol)
817 AUTOCHANGER *changer;
818 Dmsg2(dbglvl, "jid=%u search changers for %s\n", (int)rctx.jcr->JobId,
820 foreach_res(changer, R_AUTOCHANGER) {
821 Dmsg2(dbglvl, "jid=%u Try match changer res=%s\n",
822 (int)rctx.jcr->JobId, changer->hdr.name);
823 /* Find resource, and make sure we were able to open it */
824 if (fnmatch(rctx.device_name, changer->hdr.name, 0) == 0) {
826 /* Try each device in this AutoChanger */
827 foreach_alist(device, changer->device) {
828 Dmsg2(dbglvl, "jid=%u Try changer device %s\n",
829 (int)rctx.jcr->JobId, device->hdr.name);
830 if (device->dev == vol->dev) {
831 Dmsg2(dbglvl, "jid=%u Found changer device %s\n",
832 (int)rctx.jcr->JobId, device->hdr.name);
842 * Search for a device suitable for this job.
844 bool find_suitable_device_for_job(JCR *jcr, RCTX &rctx)
853 dirstore = jcr->write_store;
855 dirstore = jcr->read_store;
857 Dmsg5(dbglvl, "jid=%u PrefMnt=%d exact=%d suitable=%d chgronly=%d\n",
858 (int)rctx.jcr->JobId,
859 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
860 rctx.autochanger_only);
863 * If the appropriate conditions of this if are met, namely that
864 * we are appending and the user wants mounted drive (or we
865 * force try a mounted drive because they are all busy), we
866 * start by looking at all the Volumes in the volume list.
868 if (!vol_list->empty() && rctx.append && rctx.PreferMountedVols) {
869 dlist *temp_vol_list, *save_vol_list;
874 * Create a temporary copy of the volume list. We do this,
875 * to avoid having the volume list locked during the
876 * call to reserve_device(), which would cause a deadlock.
877 * Note, we may want to add an update counter on the vol_list
878 * so that if it is modified while we are traversing the copy
879 * we can take note and act accordingly (probably redo the
880 * search at least a few times).
882 Dmsg1(dbglvl, "jid=%u duplicate vol list\n", (int)rctx.jcr->JobId);
883 temp_vol_list = New(dlist(vol, &vol->link));
884 foreach_dlist(vol, vol_list) {
886 VOLRES *tvol = (VOLRES *)malloc(sizeof(VOLRES));
887 memset(tvol, 0, sizeof(VOLRES));
888 tvol->vol_name = bstrdup(vol->vol_name);
889 tvol->dev = vol->dev;
890 nvol = (VOLRES *)temp_vol_list->binary_insert(tvol, my_compare);
892 tvol->dev = NULL; /* don't zap dev entry */
894 Pmsg0(000, "Logic error. Duplicating vol list hit duplicate.\n");
895 Jmsg(jcr, M_WARNING, 0, "Logic error. Duplicating vol list hit duplicate.\n");
900 /* Look through reserved volumes for one we can use */
901 Dmsg1(dbglvl, "jid=%u look for vol in vol list\n", (int)rctx.jcr->JobId);
902 foreach_dlist(vol, temp_vol_list) {
904 Dmsg2(dbglvl, "jid=%u vol=%s no dev\n", (int)rctx.jcr->JobId, vol->vol_name);
907 /* Check with Director if this Volume is OK */
908 bstrncpy(dcr->VolumeName, vol->vol_name, sizeof(dcr->VolumeName));
909 if (!dir_get_volume_info(dcr, GET_VOL_INFO_FOR_WRITE)) {
913 Dmsg2(dbglvl, "jid=%u vol=%s\n", (int)rctx.jcr->JobId, vol->vol_name);
914 foreach_alist(store, dirstore) {
917 foreach_alist(device_name, store->device) {
918 /* Found a device, try to use it */
919 rctx.device_name = device_name;
920 rctx.device = vol->dev->device;
922 if (!vol->dev->is_autochanger()) {
923 if (!is_vol_in_autochanger(rctx, vol)) {
926 } else if (strcmp(device_name, vol->dev->device->hdr.name) != 0) {
927 Dmsg3(dbglvl, "jid=%u device=%s not suitable want %s\n", (int)rctx.jcr->JobId,
928 vol->dev->device->hdr.name, device_name);
932 bstrncpy(rctx.VolumeName, vol->vol_name, sizeof(rctx.VolumeName));
933 rctx.have_volume = true;
934 /* Try reserving this device and volume */
935 Dmsg3(dbglvl, "jid=%u try vol=%s on device=%s\n", (int)rctx.jcr->JobId,
936 rctx.VolumeName, device_name);
937 stat = reserve_device(rctx);
938 if (stat == 1) { /* found available device */
939 Dmsg2(dbglvl, "jid=%u Suitable device found=%s\n", (int)rctx.jcr->JobId,
943 } else if (stat == 0) { /* device busy */
944 Dmsg2(dbglvl, "jid=%u Suitable device=%s, busy: not use\n",
945 (int)rctx.jcr->JobId, device_name);
947 /* otherwise error */
948 Dmsg1(dbglvl, "jid=%u No suitable device found.\n", (int)rctx.jcr->JobId);
950 rctx.have_volume = false;
956 } /* end for loop over reserved volumes */
959 save_vol_list = vol_list;
960 vol_list = temp_vol_list;
961 free_volume_list(); /* release temp_vol_list */
962 vol_list = save_vol_list;
963 Dmsg1(dbglvl, "jid=%u deleted temp vol list\n", (int)rctx.jcr->JobId);
967 Dmsg2(dbglvl, "jid=%u got vol %s in reserved volums list\n", (int)rctx.jcr->JobId,
973 * No reserved volume we can use, so now search for an available device.
975 * For each storage device that the user specified, we
976 * search and see if there is a resource for that device.
978 foreach_alist(store, dirstore) {
980 foreach_alist(device_name, store->device) {
982 rctx.device_name = device_name;
983 stat = search_res_for_device(rctx);
984 if (stat == 1) { /* found available device */
985 Dmsg2(dbglvl, "jid=%u available device found=%s\n", (int)rctx.jcr->JobId,
989 } else if (stat == 0) { /* device busy */
990 Dmsg2(dbglvl, "jid=%u Suitable device=%s, busy: not use\n",
991 (int)rctx.jcr->JobId, device_name);
993 /* otherwise error */
994 Dmsg1(dbglvl, "jid=%u No suitable device found.\n", (int)rctx.jcr->JobId);
1005 * Search for a particular storage device with particular storage
1006 * characteristics (MediaType).
1008 int search_res_for_device(RCTX &rctx)
1010 AUTOCHANGER *changer;
1013 Dmsg2(dbglvl, "jid=%u search res for %s\n", (int)rctx.jcr->JobId, rctx.device_name);
1014 /* Look through Autochangers first */
1015 foreach_res(changer, R_AUTOCHANGER) {
1016 Dmsg2(dbglvl, "jid=%u Try match changer res=%s\n", (int)rctx.jcr->JobId, changer->hdr.name);
1017 /* Find resource, and make sure we were able to open it */
1018 if (fnmatch(rctx.device_name, changer->hdr.name, 0) == 0) {
1019 /* Try each device in this AutoChanger */
1020 foreach_alist(rctx.device, changer->device) {
1021 Dmsg2(dbglvl, "jid=%u Try changer device %s\n", (int)rctx.jcr->JobId,
1022 rctx.device->hdr.name);
1023 stat = reserve_device(rctx);
1024 if (stat != 1) { /* try another device */
1028 if (rctx.store->append == SD_APPEND) {
1029 Dmsg3(dbglvl, "jid=%u Device %s reserved=%d for append.\n",
1030 (int)rctx.jcr->JobId, rctx.device->hdr.name,
1031 rctx.jcr->dcr->dev->reserved_device);
1033 Dmsg3(dbglvl, "jid=%u Device %s reserved=%d for read.\n",
1034 (int)rctx.jcr->JobId, rctx.device->hdr.name,
1035 rctx.jcr->read_dcr->dev->reserved_device);
1042 /* Now if requested look through regular devices */
1043 if (!rctx.autochanger_only) {
1044 foreach_res(rctx.device, R_DEVICE) {
1045 Dmsg2(dbglvl, "jid=%u Try match res=%s\n", (int)rctx.jcr->JobId, rctx.device->hdr.name);
1046 /* Find resource, and make sure we were able to open it */
1047 if (fnmatch(rctx.device_name, rctx.device->hdr.name, 0) == 0) {
1048 stat = reserve_device(rctx);
1049 if (stat != 1) { /* try another device */
1053 if (rctx.store->append == SD_APPEND) {
1054 Dmsg3(dbglvl, "jid=%u Device %s reserved=%d for append.\n",
1055 (int)rctx.jcr->JobId, rctx.device->hdr.name,
1056 rctx.jcr->dcr->dev->reserved_device);
1058 Dmsg3(dbglvl, "jid=%u Device %s reserved=%d for read.\n",
1059 (int)rctx.jcr->JobId, rctx.device->hdr.name,
1060 rctx.jcr->read_dcr->dev->reserved_device);
1066 return -1; /* nothing found */
1070 * Try to reserve a specific device.
1072 * Returns: 1 -- OK, have DCR
1076 static int reserve_device(RCTX &rctx)
1080 const int name_len = MAX_NAME_LENGTH;
1082 /* Make sure MediaType is OK */
1083 Dmsg3(dbglvl, "jid=%u chk MediaType device=%s request=%s\n",
1084 (int)rctx.jcr->JobId,
1085 rctx.device->media_type, rctx.store->media_type);
1086 if (strcmp(rctx.device->media_type, rctx.store->media_type) != 0) {
1090 /* Make sure device exists -- i.e. we can stat() it */
1091 if (!rctx.device->dev) {
1092 rctx.device->dev = init_dev(rctx.jcr, rctx.device);
1094 if (!rctx.device->dev) {
1095 if (rctx.device->changer_res) {
1096 Jmsg(rctx.jcr, M_WARNING, 0, _("\n"
1097 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
1098 rctx.device->hdr.name, rctx.device_name);
1100 Jmsg(rctx.jcr, M_WARNING, 0, _("\n"
1101 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
1104 return -1; /* no use waiting */
1107 rctx.suitable_device = true;
1108 Dmsg2(dbglvl, "jid=%u try reserve %s\n", rctx.jcr->JobId, rctx.device->hdr.name);
1109 rctx.jcr->dcr = dcr = new_dcr(rctx.jcr, rctx.jcr->dcr, rctx.device->dev);
1111 BSOCK *dir = rctx.jcr->dir_bsock;
1112 dir->fsend(_("3926 Could not get dcr for device: %s\n"), rctx.device_name);
1113 Dmsg1(dbglvl, ">dird: %s", dir->msg);
1116 bstrncpy(dcr->pool_name, rctx.store->pool_name, name_len);
1117 bstrncpy(dcr->pool_type, rctx.store->pool_type, name_len);
1118 bstrncpy(dcr->media_type, rctx.store->media_type, name_len);
1119 bstrncpy(dcr->dev_name, rctx.device_name, name_len);
1120 if (rctx.store->append == SD_APPEND) {
1121 Dmsg3(dbglvl, "jid=%u have_vol=%d vol=%s\n", (int)rctx.jcr->JobId,
1122 rctx.have_volume, rctx.VolumeName);
1123 ok = reserve_device_for_append(dcr, rctx);
1128 rctx.jcr->dcr = dcr;
1129 Dmsg6(dbglvl, "jid=%u Reserved=%d dev_name=%s mediatype=%s pool=%s ok=%d\n",
1130 (int)rctx.jcr->JobId,
1131 dcr->dev->reserved_device,
1132 dcr->dev_name, dcr->media_type, dcr->pool_name, ok);
1133 if (!rctx.have_volume) {
1134 dcr->any_volume = true;
1135 if (dir_find_next_appendable_volume(dcr)) {
1136 bstrncpy(rctx.VolumeName, dcr->VolumeName, sizeof(rctx.VolumeName));
1137 Dmsg2(dbglvl, "jid=%u looking for Volume=%s\n", (int)rctx.jcr->JobId, rctx.VolumeName);
1138 rctx.have_volume = true;
1140 Dmsg1(dbglvl, "jid=%u No next volume found\n", (int)rctx.jcr->JobId);
1141 rctx.have_volume = false;
1142 rctx.VolumeName[0] = 0;
1144 * If there is at least one volume that is valid and in use,
1145 * but we get here, check if we are running with prefers
1146 * non-mounted drives. In that case, we have selected a
1147 * non-used drive and our one and only volume is mounted
1148 * elsewhere, so we bail out and retry using that drive.
1150 if (dcr->volume_in_use && !rctx.PreferMountedVols) {
1151 rctx.PreferMountedVols = true;
1157 ok = reserve_device_for_read(dcr);
1159 rctx.jcr->read_dcr = dcr;
1160 Dmsg6(dbglvl, "jid=%u Read reserved=%d dev_name=%s mediatype=%s pool=%s ok=%d\n",
1161 (int)rctx.jcr->JobId,
1162 dcr->dev->reserved_device,
1163 dcr->dev_name, dcr->media_type, dcr->pool_name, ok);
1169 if (rctx.notify_dir) {
1171 BSOCK *dir = rctx.jcr->dir_bsock;
1172 pm_strcpy(dev_name, rctx.device->hdr.name);
1173 bash_spaces(dev_name);
1174 ok = dir->fsend(OK_device, dev_name.c_str()); /* Return real device name */
1175 Dmsg2(dbglvl, "jid=%u >dird changer: %s", jid(), dir->msg);
1182 rctx.have_volume = false;
1184 Dmsg1(dbglvl, "jid=%u Not OK.\n", (int)rctx.jcr->JobId);
1189 * We "reserve" the drive by setting the ST_READ bit. No one else
1190 * should touch the drive until that is cleared.
1191 * This allows the DIR to "reserve" the device before actually
1194 static bool reserve_device_for_read(DCR *dcr)
1196 DEVICE *dev = dcr->dev;
1197 JCR *jcr = dcr->jcr;
1204 if (is_device_unmounted(dev)) {
1205 Dmsg2(dbglvl, "jid=%u Device %s is BLOCKED due to user unmount.\n",
1206 (int)jcr->JobId, dev->print_name());
1207 Mmsg(jcr->errmsg, _("3601 JobId=%u device %s is BLOCKED due to user unmount.\n"),
1208 jcr->JobId, dev->print_name());
1209 queue_reserve_message(jcr);
1213 if (dev->is_busy()) {
1214 Dmsg5(dbglvl, "jid=%u Device %s is busy ST_READ=%d num_writers=%d reserved=%d.\n",
1215 (int)jcr->JobId, dev->print_name(),
1216 dev->state & ST_READ?1:0, dev->num_writers, dev->reserved_device);
1217 Mmsg(jcr->errmsg, _("3602 JobId=%u device %s is busy (already reading/writing).\n"),
1218 jcr->JobId, dev->print_name());
1219 queue_reserve_message(jcr);
1223 dev->clear_append();
1226 dev->reserved_device++;
1227 Dmsg4(dbglvl, "jid=%u Inc reserve=%d dev=%s %p\n", (int)jcr->JobId,
1228 dev->reserved_device, dev->print_name(), dev);
1229 dcr->reserved_device = true;
1238 * We reserve the device for appending by incrementing the
1239 * reserved_device. We do virtually all the same work that
1240 * is done in acquire_device_for_append(), but we do
1241 * not attempt to mount the device. This routine allows
1242 * the DIR to reserve multiple devices before *really*
1243 * starting the job. It also permits the SD to refuse
1244 * certain devices (not up, ...).
1246 * Note, in reserving a device, if the device is for the
1247 * same pool and the same pool type, then it is acceptable.
1248 * The Media Type has already been checked. If we are
1249 * the first tor reserve the device, we put the pool
1250 * name and pool type in the device record.
1252 static bool reserve_device_for_append(DCR *dcr, RCTX &rctx)
1254 JCR *jcr = dcr->jcr;
1255 DEVICE *dev = dcr->dev;
1262 /* If device is being read, we cannot write it */
1263 if (dev->can_read()) {
1264 Mmsg(jcr->errmsg, _("3603 JobId=%u device %s is busy reading.\n"),
1265 jcr->JobId, dev->print_name());
1266 Dmsg2(dbglvl, "jid=%u %s", jid(), jcr->errmsg);
1267 queue_reserve_message(jcr);
1271 /* If device is unmounted, we are out of luck */
1272 if (is_device_unmounted(dev)) {
1273 Mmsg(jcr->errmsg, _("3604 JobId=%u device %s is BLOCKED due to user unmount.\n"),
1274 jcr->JobId, dev->print_name());
1275 Dmsg2(dbglvl, "jid=%u %s", jid(), jcr->errmsg);
1276 queue_reserve_message(jcr);
1280 Dmsg2(dbglvl, "jid=%u reserve_append device is %s\n",
1281 (int)jcr->JobId, dev->print_name());
1283 /* Now do detailed tests ... */
1284 if (can_reserve_drive(dcr, rctx) != 1) {
1285 Dmsg1(dbglvl, "jid=%u can_reserve_drive!=1\n", (int)jcr->JobId);
1289 dev->reserved_device++;
1290 Dmsg4(dbglvl, "jid=%u Inc reserve=%d dev=%s %p\n", (int)jcr->JobId, dev->reserved_device,
1291 dev->print_name(), dev);
1292 dcr->reserved_device = true;
1301 * Returns: 1 if drive can be reserved
1302 * 0 if we should wait
1303 * -1 on error or impossibility
1305 static int can_reserve_drive(DCR *dcr, RCTX &rctx)
1307 DEVICE *dev = dcr->dev;
1308 JCR *jcr = dcr->jcr;
1310 Dmsg6(dbglvl, "jid=%u PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
1312 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
1313 rctx.autochanger_only, rctx.any_drive);
1315 /* setting any_drive overrides PreferMountedVols flag */
1316 if (!rctx.any_drive) {
1318 * When PreferMountedVols is set, we keep track of the
1319 * drive in use that has the least number of writers, then if
1320 * no unmounted drive is found, we try that drive. This
1321 * helps spread the load to the least used drives.
1323 if (rctx.try_low_use_drive && dev == rctx.low_use_drive) {
1324 Dmsg3(dbglvl, "jid=%u OK dev=%s == low_drive=%s.\n",
1325 jcr->JobId, dev->print_name(), rctx.low_use_drive->print_name());
1328 /* If he wants a free drive, but this one is busy, no go */
1329 if (!rctx.PreferMountedVols && dev->is_busy()) {
1330 /* Save least used drive */
1331 if ((dev->num_writers + dev->reserved_device) < rctx.num_writers) {
1332 rctx.num_writers = dev->num_writers + dev->reserved_device;
1333 rctx.low_use_drive = dev;
1334 Dmsg3(dbglvl, "jid=%u set low use drive=%s num_writers=%d\n",
1335 (int)jcr->JobId, dev->print_name(), rctx.num_writers);
1337 Dmsg2(dbglvl, "jid=%u not low use num_writers=%d\n",
1338 (int)jcr->JobId, dev->num_writers+dev->reserved_device);
1340 Dmsg1(dbglvl, "jid=%u failed: !prefMnt && busy.\n", jcr->JobId);
1341 Mmsg(jcr->errmsg, _("3605 JobId=%u wants free drive but device %s is busy.\n"),
1342 jcr->JobId, dev->print_name());
1343 queue_reserve_message(jcr);
1347 /* Check for prefer mounted volumes */
1348 if (rctx.PreferMountedVols && !dev->vol && dev->is_tape()) {
1349 Mmsg(jcr->errmsg, _("3606 JobId=%u prefers mounted drives, but drive %s has no Volume.\n"),
1350 jcr->JobId, dev->print_name());
1351 queue_reserve_message(jcr);
1352 Dmsg1(dbglvl, "jid=%u failed: want mounted -- no vol\n", (uint32_t)jcr->JobId);
1353 return 0; /* No volume mounted */
1356 /* Check for exact Volume name match */
1357 /* ***FIXME*** for Disk, we can accept any volume that goes with this
1360 if (rctx.exact_match && rctx.have_volume) {
1362 Dmsg6(dbglvl, "jid=%u PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
1364 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
1365 rctx.autochanger_only, rctx.any_drive);
1366 Dmsg5(dbglvl, "jid=%u have_vol=%d have=%s resvol=%s want=%s\n",
1367 (int)jcr->JobId, rctx.have_volume, dev->VolHdr.VolumeName,
1368 dev->vol?dev->vol->vol_name:"*none*", rctx.VolumeName);
1369 ok = strcmp(dev->VolHdr.VolumeName, rctx.VolumeName) == 0 ||
1370 (dev->vol && strcmp(dev->vol->vol_name, rctx.VolumeName) == 0);
1372 Mmsg(jcr->errmsg, _("3607 JobId=%u wants Vol=\"%s\" drive has Vol=\"%s\" on drive %s.\n"),
1373 jcr->JobId, rctx.VolumeName, dev->VolHdr.VolumeName,
1375 queue_reserve_message(jcr);
1376 Dmsg4(dbglvl, "jid=%u not OK: dev have=%s resvol=%s want=%s\n",
1377 (int)jcr->JobId, dev->VolHdr.VolumeName,
1378 dev->vol?dev->vol->vol_name:"*none*", rctx.VolumeName);
1381 if (is_volume_in_use(dcr)) {
1382 return 0; /* fail if volume on another drive */
1387 /* Check for unused autochanger drive */
1388 if (rctx.autochanger_only && !dev->is_busy() &&
1389 dev->VolHdr.VolumeName[0] == 0) {
1390 /* Device is available but not yet reserved, reserve it for us */
1391 Dmsg2(dbglvl, "jid=%u OK Res Unused autochanger %s.\n",
1392 jcr->JobId, dev->print_name());
1393 bstrncpy(dev->pool_name, dcr->pool_name, sizeof(dev->pool_name));
1394 bstrncpy(dev->pool_type, dcr->pool_type, sizeof(dev->pool_type));
1395 return 1; /* reserve drive */
1399 * Handle the case that there are no writers
1401 if (dev->num_writers == 0) {
1402 /* Now check if there are any reservations on the drive */
1403 if (dev->reserved_device) {
1404 /* Now check if we want the same Pool and pool type */
1405 if (strcmp(dev->pool_name, dcr->pool_name) == 0 &&
1406 strcmp(dev->pool_type, dcr->pool_type) == 0) {
1407 /* OK, compatible device */
1408 Dmsg2(dbglvl, "jid=%u OK dev: %s num_writers=0, reserved, pool matches\n",
1409 jcr->JobId, dev->print_name());
1412 /* Drive Pool not suitable for us */
1413 Mmsg(jcr->errmsg, _(
1414 "3608 JobId=%u wants Pool=\"%s\" but have Pool=\"%s\" nreserve=%d on drive %s.\n"),
1415 jcr->JobId, dcr->pool_name, dev->pool_name,
1416 dev->reserved_device, dev->print_name());
1417 queue_reserve_message(jcr);
1418 Dmsg3(dbglvl, "jid=%u failed: busy num_writers=0, reserved, pool=%s wanted=%s\n",
1419 (int)jcr->JobId, dev->pool_name, dcr->pool_name);
1420 return 0; /* wait */
1422 } else if (dev->can_append()) {
1423 /* Device in append mode, check if changing pool */
1424 if (strcmp(dev->pool_name, dcr->pool_name) == 0 &&
1425 strcmp(dev->pool_type, dcr->pool_type) == 0) {
1426 Dmsg2(dbglvl, "jid=%u OK dev: %s num_writers=0, can_append, pool matches.\n",
1427 jcr->JobId, dev->print_name());
1428 /* OK, compatible device */
1431 /* Changing pool, unload old tape if any in drive */
1432 Dmsg1(dbglvl, "jid=%u OK dev: num_writers=0, not reserved, pool change, unload changer\n",
1434 unload_autochanger(dcr, 0);
1437 /* Device is available but not yet reserved, reserve it for us */
1438 Dmsg2(dbglvl, "jid=%u OK Dev avail reserved %s\n", jcr->JobId, dev->print_name());
1439 bstrncpy(dev->pool_name, dcr->pool_name, sizeof(dev->pool_name));
1440 bstrncpy(dev->pool_type, dcr->pool_type, sizeof(dev->pool_type));
1441 return 1; /* reserve drive */
1445 * Check if the device is in append mode with writers (i.e.
1446 * available if pool is the same).
1448 if (dev->can_append() || dev->num_writers > 0) {
1449 /* Yes, now check if we want the same Pool and pool type */
1450 if (strcmp(dev->pool_name, dcr->pool_name) == 0 &&
1451 strcmp(dev->pool_type, dcr->pool_type) == 0) {
1452 Dmsg2(dbglvl, "jid=%u OK dev: %s num_writers>=0, can_append, pool matches.\n",
1453 jcr->JobId, dev->print_name());
1454 /* OK, compatible device */
1457 /* Drive Pool not suitable for us */
1458 Mmsg(jcr->errmsg, _("3609 JobId=%u wants Pool=\"%s\" but has Pool=\"%s\" on drive %s.\n"),
1459 jcr->JobId, dcr->pool_name, dev->pool_name, dev->print_name());
1460 queue_reserve_message(jcr);
1461 Dmsg3(dbglvl, "jid=%u failed: busy num_writers>0, can_append, pool=%s wanted=%s\n",
1462 (int)jcr->JobId, dev->pool_name, dcr->pool_name);
1463 return 0; /* wait */
1466 Pmsg1(000, _("Logic error!!!! JobId=%u Should not get here.\n"), (int)jcr->JobId);
1467 Mmsg(jcr->errmsg, _("3910 JobId=%u Logic error!!!! drive %s Should not get here.\n"),
1468 jcr->JobId, dev->print_name());
1469 queue_reserve_message(jcr);
1470 Jmsg0(jcr, M_FATAL, 0, _("Logic error!!!! Should not get here.\n"));
1471 return -1; /* error, should not get here */
1473 Mmsg(jcr->errmsg, _("3911 JobId=%u failed reserve drive %s.\n"),
1474 jcr->JobId, dev->print_name());
1475 queue_reserve_message(jcr);
1476 Dmsg2(dbglvl, "jid=%u failed: No reserve %s\n", jcr->JobId, dev->print_name());
1481 * search_lock is already set on entering this routine
1483 static void queue_reserve_message(JCR *jcr)
1486 alist *msgs = jcr->reserve_msgs;
1493 * Look for duplicate message. If found, do
1496 for (i=msgs->size()-1; i >= 0; i--) {
1497 msg = (char *)msgs->get(i);
1501 /* Comparison based on 4 digit message number */
1502 if (strncmp(msg, jcr->errmsg, 4) == 0) {
1506 /* Message unique, so insert it */
1507 jcr->reserve_msgs->push(bstrdup(jcr->errmsg));
1511 * Send any reservation messages queued for this jcr
1513 void send_drive_reserve_messages(JCR *jcr, void sendit(const char *msg, int len, void *sarg), void *arg)
1519 lock_reservations();
1520 msgs = jcr->reserve_msgs;
1521 if (!msgs || msgs->size() == 0) {
1524 for (i=msgs->size()-1; i >= 0; i--) {
1525 msg = (char *)msgs->get(i);
1527 sendit(" ", 3, arg);
1528 sendit(msg, strlen(msg), arg);
1535 unlock_reservations();