2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2008 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 const int dbglvl = 50;
44 static dlist *vol_list = NULL;
45 static brwlock_t reservation_lock;
46 static brwlock_t vol_list_lock;
48 /* Forward referenced functions */
49 static int can_reserve_drive(DCR *dcr, RCTX &rctx);
50 static int reserve_device(RCTX &rctx);
51 static bool reserve_device_for_read(DCR *dcr);
52 static bool reserve_device_for_append(DCR *dcr, RCTX &rctx);
53 static bool use_storage_cmd(JCR *jcr);
54 static void queue_reserve_message(JCR *jcr);
55 static void pop_reserve_messages(JCR *jcr);
57 /* Requests from the Director daemon */
58 static char use_storage[] = "use storage=%127s media_type=%127s "
59 "pool_name=%127s pool_type=%127s append=%d copy=%d stripe=%d\n";
60 static char use_device[] = "use device=%127s\n";
62 /* Responses sent to Director daemon */
63 static char OK_device[] = "3000 OK use device device=%s\n";
64 static char NO_device[] = "3924 Device \"%s\" not in SD Device resources.\n";
65 static char BAD_use[] = "3913 Bad use command: %s\n";
67 bool use_cmd(JCR *jcr)
70 * Get the device, media, and pool information
72 if (!use_storage_cmd(jcr)) {
73 set_jcr_job_status(jcr, JS_ErrorTerminated);
74 memset(jcr->sd_auth_key, 0, strlen(jcr->sd_auth_key));
80 static int my_compare(void *item1, void *item2)
82 return strcmp(((VOLRES *)item1)->vol_name, ((VOLRES *)item2)->vol_name);
86 * This allows a given thread to recursively call lock_reservations.
87 * It must, of course, call unlock_... the same number of times.
89 void init_reservations_lock()
92 if ((errstat=rwl_init(&reservation_lock)) != 0) {
94 Emsg1(M_ABORT, 0, _("Unable to initialize reservation lock. ERR=%s\n"),
95 be.bstrerror(errstat));
98 if ((errstat=rwl_init(&vol_list_lock)) != 0) {
100 Emsg1(M_ABORT, 0, _("Unable to initialize volume list lock. ERR=%s\n"),
101 be.bstrerror(errstat));
105 void term_reservations_lock()
107 rwl_destroy(&reservation_lock);
108 rwl_destroy(&vol_list_lock);
111 int reservations_lock_count = 0;
113 /* This applies to a drive and to Volumes */
114 void _lock_reservations()
117 reservations_lock_count++;
118 if ((errstat=rwl_writelock(&reservation_lock)) != 0) {
120 Emsg2(M_ABORT, 0, "rwl_writelock failure. stat=%d: ERR=%s\n",
121 errstat, be.bstrerror(errstat));
125 void _unlock_reservations()
128 reservations_lock_count--;
129 if ((errstat=rwl_writeunlock(&reservation_lock)) != 0) {
131 Emsg2(M_ABORT, 0, "rwl_writeunlock failure. stat=%d: ERR=%s\n",
132 errstat, be.bstrerror(errstat));
136 int vol_list_lock_count = 0;
139 * This allows a given thread to recursively call to lock_volumes()
144 vol_list_lock_count++;
145 if ((errstat=rwl_writelock(&vol_list_lock)) != 0) {
147 Emsg2(M_ABORT, 0, "rwl_writelock failure. stat=%d: ERR=%s\n",
148 errstat, be.bstrerror(errstat));
152 void _unlock_volumes()
155 vol_list_lock_count--;
156 if ((errstat=rwl_writeunlock(&vol_list_lock)) != 0) {
158 Emsg2(M_ABORT, 0, "rwl_writeunlock failure. stat=%d: ERR=%s\n",
159 errstat, be.bstrerror(errstat));
165 * List Volumes -- this should be moved to status.c
172 static void debug_list_volumes(const char *imsg)
175 POOL_MEM msg(PM_MESSAGE);
178 foreach_dlist(vol, vol_list) {
180 Mmsg(msg, "List from %s: %s at %p on device %s\n", imsg,
181 vol->vol_name, vol->vol_name, vol->dev->print_name());
183 Mmsg(msg, "List from %s: %s at %p no dev\n", imsg, vol->vol_name, vol->vol_name);
185 Dmsg1(dbglvl, "%s", msg.c_str());
190 foreach_dlist(vol, vol_list) {
191 if (vol->dev == dev) {
192 Dmsg0(dbglvl, "Two Volumes on same device.\n");
199 // Dmsg2(dbglvl, "List from %s: %d volumes\n", imsg, count);
205 * List Volumes -- this should be moved to status.c
207 void list_volumes(void sendit(const char *msg, int len, void *sarg), void *arg)
210 POOL_MEM msg(PM_MESSAGE);
214 foreach_dlist(vol, vol_list) {
215 DEVICE *dev = vol->dev;
217 len = Mmsg(msg, "%s on device %s\n", vol->vol_name, dev->print_name());
218 sendit(msg.c_str(), len, arg);
219 len = Mmsg(msg, " Reader=%d writers=%d reserved=%d released=%d\n",
220 dev->can_read()?1:0, dev->num_writers, dev->reserved_device, vol->released);
221 sendit(msg.c_str(), len, arg);
223 len = Mmsg(msg, "%s no device. released=%d\n", vol->vol_name, vol->released);
224 sendit(msg.c_str(), len, arg);
231 * Create a Volume item to put in the Volume list
232 * Ensure that the device points to it.
234 static VOLRES *new_vol_item(DCR *dcr, const char *VolumeName)
237 vol = (VOLRES *)malloc(sizeof(VOLRES));
238 memset(vol, 0, sizeof(VOLRES));
239 vol->vol_name = bstrdup(VolumeName);
241 Dmsg3(dbglvl, "new Vol=%s at %p dev=%s\n",
242 VolumeName, vol->vol_name, vol->dev->print_name());
246 static void free_vol_item(VOLRES *vol)
250 vol->dev->vol = NULL;
257 * Put a new Volume entry in the Volume list. This
258 * effectively reserves the volume so that it will
259 * not be mounted again.
261 * If the device has any current volume associated with it,
262 * and it is a different Volume, and the device is not busy,
263 * we release the old Volume item and insert the new one.
265 * It is assumed that the device is free and locked so that
266 * we can change the device structure.
268 * Some details of the Volume list handling:
270 * 1. The Volume list entry must be attached to the drive (rather than
271 * attached to a job as it currently is. I.e. the drive that "owns"
272 * the volume (reserved, in use, mounted)
273 * must point to the volume (still to be maintained in a list).
275 * 2. The Volume is entered in the list when a drive is reserved.
277 * 3. When a drive is in use, the device code must appropriately update the
278 * volume name as it changes (currently the list is static -- an entry is
279 * removed when the Volume is no longer reserved, in use or mounted).
280 * The new code must keep the same list entry as long as the drive
281 * has any volume associated with it but the volume name in the list
282 * must be updated when the drive has a different volume mounted.
284 * 4. A job that has reserved a volume, can un-reserve the volume, and if the
285 * volume is not mounted, and not reserved, and not in use, it will be
286 * removed from the list.
288 * 5. If a job wants to reserve a drive with a different Volume from the one on
289 * the drive, it can re-use the drive for the new Volume.
291 * 6. If a job wants a Volume that is in a different drive, it can either use the
292 * other drive or take the volume, only if the other drive is not in use or
295 * One nice aspect of this is that the reserve use count and the writer use count
296 * already exist and are correctly programmed and will need no changes -- use
297 * counts are always very tricky.
299 * The old code had a concept of "reserving" a Volume, but was changed
300 * to reserving and using a drive. A volume is must be attached to (owned by) a
301 * drive and can move from drive to drive or be unused given certain specific
302 * conditions of the drive. The key is that the drive must "own" the Volume.
303 * The old code had the job (dcr) owning the volume (more or less). The job was
304 * to change the insertion and removal of the volumes from the list to be based
305 * on the drive rather than the job.
307 * Return: VOLRES entry on success
308 * NULL volume busy on another drive
310 VOLRES *reserve_volume(DCR *dcr, const char *VolumeName)
313 DEVICE *dev = dcr->dev;
317 Dmsg1(dbglvl, "reserve_volume %s\n", VolumeName);
319 * We lock the reservations system here to ensure
320 * when adding a new volume that no newly scheduled
321 * job can reserve it.
324 debug_list_volumes("begin reserve_volume");
326 * First, remove any old volume attached to this device as it
332 * Make sure we don't remove the current volume we are inserting
333 * because it was probably inserted by another job, or it
334 * is not being used and is marked as released.
336 if (strcmp(vol->vol_name, VolumeName) == 0) {
337 Dmsg1(dbglvl, "OK, vol=%s on device.\n", VolumeName);
338 vol->released = false; /* retake vol if released previously */
339 goto get_out; /* Volume already on this device */
341 /* Don't release a volume if it is in use */
342 if (!vol->released) {
343 Dmsg1(dbglvl, "Cannot free vol=%s. It is not released.\n", vol->vol_name);
344 vol = NULL; /* vol in use */
347 Dmsg2(dbglvl, "reserve_vol free vol=%s at %p\n", vol->vol_name, vol->vol_name);
348 unload_autochanger(dcr, -1); /* unload the volume */
350 debug_list_volumes("reserve_vol free");
354 /* Create a new Volume entry */
355 nvol = new_vol_item(dcr, VolumeName);
358 * Now try to insert the new Volume
360 vol = (VOLRES *)vol_list->binary_insert(nvol, my_compare);
362 Dmsg2(dbglvl, "Found vol=%s dev-same=%d\n", vol->vol_name, dev==vol->dev);
364 * At this point, a Volume with this name already is in the list,
365 * so we simply release our new Volume entry. Note, this should
366 * only happen if we are moving the volume from one drive to another.
368 Dmsg2(dbglvl, "reserve_vol free-tmp vol=%s at %p\n",
369 vol->vol_name, vol->vol_name);
371 * Clear dev pointer so that free_vol_item() doesn't
372 * take away our volume.
374 nvol->dev = NULL; /* don't zap dev entry */
377 /* Check if we are trying to use the Volume on a different drive */
378 if (dev != vol->dev) {
379 /* Caller wants to switch Volume to another device */
380 if (!vol->dev->is_busy()) {
381 /* OK to move it -- I'm not sure this will work */
382 Dmsg3(dbglvl, "==== Swap vol=%s from dev=%s to %s\n", VolumeName,
383 vol->dev->print_name(), dev->print_name());
384 vol->dev->vol = NULL; /* take vol from old drive */
385 vol->dev->VolHdr.VolumeName[0] = 0;
386 vol->dev = dev; /* point vol at new drive */
387 dev->vol = vol; /* point dev at vol */
388 dev->VolHdr.VolumeName[0] = 0;
390 Dmsg3(dbglvl, "Volume busy could not swap vol=%s from dev=%s to %s\n",
391 VolumeName, vol->dev->print_name(), dev->print_name());
392 vol = NULL; /* device busy */
401 vol->released = false;
403 debug_list_volumes("end new volume");
409 * Switch from current device to given device
412 void switch_device(DCR *dcr, DEVICE *dev)
414 // lock_reservations();
418 memcpy(&save_dcr, dcr, sizeof(save_dcr));
419 clean_device(dcr); /* clean up the dcr */
421 dcr->dev = dev; /* get new device pointer */
422 Jmsg(dcr->jcr, M_INFO, 0, _("Device switch. New device %s chosen.\n"),
423 dcr->dev->print_name());
425 bstrncpy(dcr->VolumeName, save_dcr.VolumeName, sizeof(dcr->VolumeName));
426 bstrncpy(dcr->media_type, save_dcr.media_type, sizeof(dcr->media_type));
427 dcr->VolCatInfo.Slot = save_dcr.VolCatInfo.Slot;
428 bstrncpy(dcr->pool_name, save_dcr.pool_name, sizeof(dcr->pool_name));
429 bstrncpy(dcr->pool_type, save_dcr.pool_type, sizeof(dcr->pool_type));
430 bstrncpy(dcr->dev_name, save_dcr.dev_name, sizeof(dcr->dev_name));
432 dev->reserved_device++;
433 dcr->reserved_device = true;
439 * Search for a Volume name in the Volume list.
441 * Returns: VOLRES entry on success
442 * NULL if the Volume is not in the list
444 VOLRES *find_volume(DCR *dcr)
447 /* Do not lock reservations here */
449 vol.vol_name = bstrdup(dcr->VolumeName);
450 fvol = (VOLRES *)vol_list->binary_search(&vol, my_compare);
452 Dmsg2(dbglvl, "find_vol=%s found=%d\n", dcr->VolumeName, fvol!=NULL);
453 debug_list_volumes("find_volume");
459 * Remove any reservation from a drive and tell the system
460 * that the volume is unused at least by us.
462 void unreserve_device(DCR *dcr)
464 DEVICE *dev = dcr->dev;
465 if (dcr->reserved_device) {
466 dcr->reserved_device = false;
467 dev->reserved_device--;
468 Dmsg2(dbglvl, "Dec reserve=%d dev=%s\n", dev->reserved_device, dev->print_name());
469 dcr->reserved_device = false;
470 /* If we set read mode in reserving, remove it */
471 if (dev->can_read()) {
474 if (dev->num_writers < 0) {
475 Jmsg1(dcr->jcr, M_ERROR, 0, _("Hey! num_writers=%d!!!!\n"), dev->num_writers);
476 dev->num_writers = 0;
483 * Free a Volume from the Volume list if it is no longer used
484 * Note, for tape drives we want to remember where the Volume
485 * was when last used, so rather than free the volume entry,
486 * we simply mark it "released" so when the drive is really
487 * needed for another volume, we can reuse it.
489 * Returns: true if the Volume found and "removed" from the list
490 * false if the Volume is not in the list or is in use
492 bool volume_unused(DCR *dcr)
494 DEVICE *dev = dcr->dev;
496 if (dev->vol == NULL) {
497 Dmsg1(dbglvl, "vol_unused: no vol on %s\n", dev->print_name());
498 debug_list_volumes("null vol cannot unreserve_volume");
502 if (dev->is_busy()) {
503 Dmsg1(dbglvl, "vol_unused: busy on %s\n", dev->print_name());
504 debug_list_volumes("dev busy cannot unreserve_volume");
509 * If this is a tape, we do not free the volume, rather we wait
510 * until the autoloader unloads it, or until another tape is
511 * explicitly read in this drive. This allows the SD to remember
512 * where the tapes are or last were.
514 dev->vol->released = true;
515 if (dev->is_tape() || dev->is_autochanger()) {
519 * Note, this frees the volume reservation entry, but the
520 * file descriptor remains open with the OS.
522 return free_volume(dev);
527 * Unconditionally release the volume entry
529 bool free_volume(DEVICE *dev)
533 if (dev->vol == NULL) {
534 Dmsg1(dbglvl, "No vol on dev %s\n", dev->print_name());
540 vol_list->remove(vol);
541 Dmsg2(dbglvl, "free_volume %s dev=%s\n", vol->vol_name, dev->print_name());
543 debug_list_volumes("free_volume");
549 /* Create the Volume list */
550 void create_volume_list()
553 if (vol_list == NULL) {
554 vol_list = New(dlist(vol, &vol->link));
558 /* Release all Volumes from the list */
559 void free_volume_list()
566 foreach_dlist(vol, vol_list) {
568 Dmsg2(dbglvl, "free vol_list Volume=%s dev=%s\n", vol->vol_name, vol->dev->print_name());
570 Dmsg1(dbglvl, "free vol_list Volume=%s No dev\n", vol->vol_name);
573 vol->vol_name = NULL;
580 bool is_volume_in_use(DCR *dcr)
582 VOLRES *vol = find_volume(dcr);
584 Dmsg1(dbglvl, "Vol=%s not in use.\n", dcr->VolumeName);
585 return false; /* vol not in list */
587 ASSERT(vol->dev != NULL);
589 if (dcr->dev == vol->dev) { /* same device OK */
590 Dmsg1(dbglvl, "Vol=%s on same dev.\n", dcr->VolumeName);
593 Dmsg3(dbglvl, "Vol=%s on %s we have %s\n", dcr->VolumeName,
594 vol->dev->print_name(), dcr->dev->print_name());
596 if (!vol->dev->is_busy()) {
597 Dmsg2(dbglvl, "Vol=%s dev=%s not busy.\n", dcr->VolumeName, vol->dev->print_name());
600 Dmsg2(dbglvl, "Vol=%s dev=%s busy.\n", dcr->VolumeName, vol->dev->print_name());
602 Dmsg2(dbglvl, "Vol=%s in use by %s.\n", dcr->VolumeName, vol->dev->print_name());
608 * We get the following type of information:
610 * use storage=xxx media_type=yyy pool_name=xxx pool_type=yyy append=1 copy=0 strip=0
614 * use storage=xxx media_type=yyy pool_name=xxx pool_type=yyy append=0 copy=0 strip=0
618 static bool use_storage_cmd(JCR *jcr)
620 POOL_MEM store_name, dev_name, media_type, pool_name, pool_type;
621 BSOCK *dir = jcr->dir_bsock;
629 memset(&rctx, 0, sizeof(RCTX));
632 * If there are multiple devices, the director sends us
633 * use_device for each device that it wants to use.
635 dirstore = New(alist(10, not_owned_by_alist));
636 jcr->reserve_msgs = New(alist(10, not_owned_by_alist));
638 Dmsg1(dbglvl, "<dird: %s", dir->msg);
639 ok = sscanf(dir->msg, use_storage, store_name.c_str(),
640 media_type.c_str(), pool_name.c_str(),
641 pool_type.c_str(), &append, &Copy, &Stripe) == 7;
646 jcr->write_store = dirstore;
648 jcr->read_store = dirstore;
650 rctx.append = append;
651 unbash_spaces(store_name);
652 unbash_spaces(media_type);
653 unbash_spaces(pool_name);
654 unbash_spaces(pool_type);
655 store = new DIRSTORE;
656 dirstore->append(store);
657 memset(store, 0, sizeof(DIRSTORE));
658 store->device = New(alist(10));
659 bstrncpy(store->name, store_name, sizeof(store->name));
660 bstrncpy(store->media_type, media_type, sizeof(store->media_type));
661 bstrncpy(store->pool_name, pool_name, sizeof(store->pool_name));
662 bstrncpy(store->pool_type, pool_type, sizeof(store->pool_type));
663 store->append = append;
665 /* Now get all devices */
666 while (dir->recv() >= 0) {
667 Dmsg1(dbglvl, "<dird device: %s", dir->msg);
668 ok = sscanf(dir->msg, use_device, dev_name.c_str()) == 1;
672 unbash_spaces(dev_name);
673 store->device->append(bstrdup(dev_name.c_str()));
675 } while (ok && dir->recv() >= 0);
677 /* Developer debug code */
679 if (debug_level >= dbglvl) {
680 foreach_alist(store, dirstore) {
681 Dmsg5(dbglvl, "Storage=%s media_type=%s pool=%s pool_type=%s append=%d\n",
682 store->name, store->media_type, store->pool_name,
683 store->pool_type, store->append);
684 foreach_alist(device_name, store->device) {
685 Dmsg1(dbglvl, " Device=%s\n", device_name);
690 init_jcr_device_wait_timers(jcr);
691 jcr->dcr = new_dcr(jcr, NULL, NULL); /* get a dcr */
693 BSOCK *dir = jcr->dir_bsock;
694 dir->fsend(_("3939 Could not get dcr\n"));
695 Dmsg1(dbglvl, ">dird: %s", dir->msg);
699 * At this point, we have a list of all the Director's Storage
700 * resources indicated for this Job, which include Pool, PoolType,
701 * storage name, and Media type.
702 * Then for each of the Storage resources, we have a list of
703 * device names that were given.
705 * Wiffle through them and find one that can do the backup.
708 int wait_for_device_retries = 0;
711 rctx.notify_dir = true;
714 for ( ; !fail && !job_canceled(jcr); ) {
715 pop_reserve_messages(jcr);
716 rctx.suitable_device = false;
717 rctx.have_volume = false;
718 rctx.VolumeName[0] = 0;
719 rctx.any_drive = false;
720 if (!jcr->PreferMountedVols) {
722 * Here we try to find a drive that is not used.
723 * This will maximize the use of available drives.
726 rctx.num_writers = 20000000; /* start with impossible number */
727 rctx.low_use_drive = NULL;
728 rctx.PreferMountedVols = false;
729 rctx.exact_match = false;
730 rctx.autochanger_only = true;
731 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
732 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
733 rctx.autochanger_only, rctx.any_drive);
734 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
737 /* Look through all drives possibly for low_use drive */
738 if (rctx.low_use_drive) {
739 rctx.try_low_use_drive = true;
740 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
743 rctx.try_low_use_drive = false;
745 rctx.autochanger_only = false;
746 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
747 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
748 rctx.autochanger_only, rctx.any_drive);
749 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
754 * Now we look for a drive that may or may not be in
757 /* Look for an exact Volume match all drives */
758 rctx.PreferMountedVols = true;
759 rctx.exact_match = true;
760 rctx.autochanger_only = false;
761 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
762 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
763 rctx.autochanger_only, rctx.any_drive);
764 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
767 /* Look for any mounted drive */
768 rctx.exact_match = false;
769 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
770 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
771 rctx.autochanger_only, rctx.any_drive);
772 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
776 rctx.any_drive = true;
777 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
778 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
779 rctx.autochanger_only, rctx.any_drive);
780 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
783 /* Keep reservations locked *except* during wait_for_device() */
784 unlock_reservations();
786 * The idea of looping on repeat a few times it to ensure
787 * that if there is some subtle timing problem between two
788 * jobs, we will simply try again, and most likely succeed.
789 * This can happen if one job reserves a drive or finishes using
790 * a drive at the same time a second job wants it.
792 if (repeat++ > 1) { /* try algorithm 3 times */
793 bmicrosleep(30, 0); /* wait a bit */
794 Dmsg0(dbglvl, "repeat reserve algorithm\n");
795 } else if (!rctx.suitable_device || !wait_for_device(jcr, wait_for_device_retries)) {
796 Dmsg0(dbglvl, "Fail. !suitable_device || !wait_for_device\n");
800 dir->signal(BNET_HEARTBEAT); /* Inform Dir that we are alive */
802 unlock_reservations();
805 * If we get here, there are no suitable devices available, which
806 * means nothing configured. If a device is suitable but busy
807 * with another Volume, we will not come here.
809 unbash_spaces(dir->msg);
810 pm_strcpy(jcr->errmsg, dir->msg);
811 Jmsg(jcr, M_INFO, 0, _("Failed command: %s\n"), jcr->errmsg);
812 Jmsg(jcr, M_FATAL, 0, _("\n"
813 " Device \"%s\" with MediaType \"%s\" requested by DIR not found in SD Device resources.\n"),
814 dev_name.c_str(), media_type.c_str());
815 dir->fsend(NO_device, dev_name.c_str());
817 Dmsg1(dbglvl, ">dird: %s", dir->msg);
820 unbash_spaces(dir->msg);
821 pm_strcpy(jcr->errmsg, dir->msg);
822 Jmsg(jcr, M_FATAL, 0, _("Failed command: %s\n"), jcr->errmsg);
823 dir->fsend(BAD_use, jcr->errmsg);
824 Dmsg1(dbglvl, ">dird: %s", dir->msg);
827 release_reserve_messages(jcr);
833 * Walk through the autochanger resources and check if
834 * the volume is in one of them.
836 * Returns: true if volume is in device
839 static bool is_vol_in_autochanger(RCTX &rctx, VOLRES *vol)
841 AUTOCHANGER *changer = vol->dev->device->changer_res;
843 /* Find resource, and make sure we were able to open it */
844 if (strcmp(rctx.device_name, changer->hdr.name) == 0) {
845 Dmsg1(dbglvl, "Found changer device %s\n", vol->dev->device->hdr.name);
848 Dmsg1(dbglvl, "Incorrect changer device %s\n", changer->hdr.name);
853 * Search for a device suitable for this job.
855 bool find_suitable_device_for_job(JCR *jcr, RCTX &rctx)
864 dirstore = jcr->write_store;
866 dirstore = jcr->read_store;
868 Dmsg4(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d\n",
869 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
870 rctx.autochanger_only);
873 * If the appropriate conditions of this if are met, namely that
874 * we are appending and the user wants mounted drive (or we
875 * force try a mounted drive because they are all busy), we
876 * start by looking at all the Volumes in the volume list.
878 if (!vol_list->empty() && rctx.append && rctx.PreferMountedVols) {
879 dlist *temp_vol_list, *save_vol_list;
882 Dmsg0(dbglvl, "lock volumes\n");
885 * Create a temporary copy of the volume list. We do this,
886 * to avoid having the volume list locked during the
887 * call to reserve_device(), which would cause a deadlock.
888 * Note, we may want to add an update counter on the vol_list
889 * so that if it is modified while we are traversing the copy
890 * we can take note and act accordingly (probably redo the
891 * search at least a few times).
893 Dmsg0(dbglvl, "duplicate vol list\n");
894 temp_vol_list = New(dlist(vol, &vol->link));
895 foreach_dlist(vol, vol_list) {
897 VOLRES *tvol = (VOLRES *)malloc(sizeof(VOLRES));
898 memset(tvol, 0, sizeof(VOLRES));
899 tvol->vol_name = bstrdup(vol->vol_name);
900 tvol->dev = vol->dev;
901 nvol = (VOLRES *)temp_vol_list->binary_insert(tvol, my_compare);
903 tvol->dev = NULL; /* don't zap dev entry */
905 Pmsg0(000, "Logic error. Duplicating vol list hit duplicate.\n");
906 Jmsg(jcr, M_WARNING, 0, "Logic error. Duplicating vol list hit duplicate.\n");
909 Dmsg0(dbglvl, "unlock volumes\n");
912 /* Look through reserved volumes for one we can use */
913 Dmsg0(dbglvl, "look for vol in vol list\n");
914 foreach_dlist(vol, temp_vol_list) {
916 Dmsg1(dbglvl, "vol=%s no dev\n", vol->vol_name);
919 /* Check with Director if this Volume is OK */
920 bstrncpy(dcr->VolumeName, vol->vol_name, sizeof(dcr->VolumeName));
921 if (!dir_get_volume_info(dcr, GET_VOL_INFO_FOR_WRITE)) {
925 Dmsg1(dbglvl, "vol=%s OK for this job\n", vol->vol_name);
926 foreach_alist(store, dirstore) {
929 foreach_alist(device_name, store->device) {
930 /* Found a device, try to use it */
931 rctx.device_name = device_name;
932 rctx.device = vol->dev->device;
934 if (vol->dev->is_autochanger()) {
935 Dmsg1(dbglvl, "vol=%s is in changer\n", vol->vol_name);
936 if (!is_vol_in_autochanger(rctx, vol)) {
939 } else if (strcmp(device_name, vol->dev->device->hdr.name) != 0) {
940 Dmsg2(dbglvl, "device=%s not suitable want %s\n",
941 vol->dev->device->hdr.name, device_name);
945 bstrncpy(rctx.VolumeName, vol->vol_name, sizeof(rctx.VolumeName));
946 rctx.have_volume = true;
947 /* Try reserving this device and volume */
948 Dmsg2(dbglvl, "try vol=%s on device=%s\n", rctx.VolumeName, device_name);
949 stat = reserve_device(rctx);
950 if (stat == 1) { /* found available device */
951 Dmsg1(dbglvl, "Suitable device found=%s\n", device_name);
954 } else if (stat == 0) { /* device busy */
955 Dmsg1(dbglvl, "Suitable device=%s, busy: not use\n", device_name);
957 /* otherwise error */
958 Dmsg0(dbglvl, "No suitable device found.\n");
960 rctx.have_volume = false;
969 } /* end for loop over reserved volumes */
971 Dmsg0(dbglvl, "lock volumes\n");
973 save_vol_list = vol_list;
974 vol_list = temp_vol_list;
975 free_volume_list(); /* release temp_vol_list */
976 vol_list = save_vol_list;
977 Dmsg0(dbglvl, "deleted temp vol list\n");
978 Dmsg0(dbglvl, "unlock volumes\n");
980 debug_list_volumes("=== After free temp table\n");
983 Dmsg1(dbglvl, "got vol %s from in-use vols list\n", rctx.VolumeName);
988 * No reserved volume we can use, so now search for an available device.
990 * For each storage device that the user specified, we
991 * search and see if there is a resource for that device.
993 foreach_alist(store, dirstore) {
995 foreach_alist(device_name, store->device) {
997 rctx.device_name = device_name;
998 stat = search_res_for_device(rctx);
999 if (stat == 1) { /* found available device */
1000 Dmsg1(dbglvl, "available device found=%s\n", device_name);
1003 } else if (stat == 0) { /* device busy */
1004 Dmsg1(dbglvl, "Suitable device=%s, busy: not use\n", device_name);
1006 /* otherwise error */
1007 Dmsg0(dbglvl, "No suitable device found.\n");
1018 * Search for a particular storage device with particular storage
1019 * characteristics (MediaType).
1021 int search_res_for_device(RCTX &rctx)
1023 AUTOCHANGER *changer;
1026 Dmsg1(dbglvl, "search res for %s\n", rctx.device_name);
1027 /* Look through Autochangers first */
1028 foreach_res(changer, R_AUTOCHANGER) {
1029 Dmsg1(dbglvl, "Try match changer res=%s\n", changer->hdr.name);
1030 /* Find resource, and make sure we were able to open it */
1031 if (strcmp(rctx.device_name, changer->hdr.name) == 0) {
1032 /* Try each device in this AutoChanger */
1033 foreach_alist(rctx.device, changer->device) {
1034 Dmsg1(dbglvl, "Try changer device %s\n", rctx.device->hdr.name);
1035 stat = reserve_device(rctx);
1036 if (stat != 1) { /* try another device */
1040 if (rctx.store->append == SD_APPEND) {
1041 Dmsg2(dbglvl, "Device %s reserved=%d for append.\n",
1042 rctx.device->hdr.name, rctx.jcr->dcr->dev->reserved_device);
1044 Dmsg2(dbglvl, "Device %s reserved=%d for read.\n",
1045 rctx.device->hdr.name, rctx.jcr->read_dcr->dev->reserved_device);
1052 /* Now if requested look through regular devices */
1053 if (!rctx.autochanger_only) {
1054 foreach_res(rctx.device, R_DEVICE) {
1055 Dmsg1(dbglvl, "Try match res=%s\n", rctx.device->hdr.name);
1056 /* Find resource, and make sure we were able to open it */
1057 if (strcmp(rctx.device_name, rctx.device->hdr.name) == 0) {
1058 stat = reserve_device(rctx);
1059 if (stat != 1) { /* try another device */
1063 if (rctx.store->append == SD_APPEND) {
1064 Dmsg2(dbglvl, "Device %s reserved=%d for append.\n",
1065 rctx.device->hdr.name, rctx.jcr->dcr->dev->reserved_device);
1067 Dmsg2(dbglvl, "Device %s reserved=%d for read.\n",
1068 rctx.device->hdr.name, rctx.jcr->read_dcr->dev->reserved_device);
1074 return -1; /* nothing found */
1078 * Try to reserve a specific device.
1080 * Returns: 1 -- OK, have DCR
1084 static int reserve_device(RCTX &rctx)
1088 const int name_len = MAX_NAME_LENGTH;
1090 /* Make sure MediaType is OK */
1091 Dmsg2(dbglvl, "chk MediaType device=%s request=%s\n",
1092 rctx.device->media_type, rctx.store->media_type);
1093 if (strcmp(rctx.device->media_type, rctx.store->media_type) != 0) {
1097 /* Make sure device exists -- i.e. we can stat() it */
1098 if (!rctx.device->dev) {
1099 rctx.device->dev = init_dev(rctx.jcr, rctx.device);
1101 if (!rctx.device->dev) {
1102 if (rctx.device->changer_res) {
1103 Jmsg(rctx.jcr, M_WARNING, 0, _("\n"
1104 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
1105 rctx.device->hdr.name, rctx.device_name);
1107 Jmsg(rctx.jcr, M_WARNING, 0, _("\n"
1108 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
1111 return -1; /* no use waiting */
1114 rctx.suitable_device = true;
1115 Dmsg1(dbglvl, "try reserve %s\n", rctx.device->hdr.name);
1116 rctx.jcr->dcr = dcr = new_dcr(rctx.jcr, rctx.jcr->dcr, rctx.device->dev);
1118 BSOCK *dir = rctx.jcr->dir_bsock;
1119 dir->fsend(_("3926 Could not get dcr for device: %s\n"), rctx.device_name);
1120 Dmsg1(dbglvl, ">dird: %s", dir->msg);
1123 bstrncpy(dcr->pool_name, rctx.store->pool_name, name_len);
1124 bstrncpy(dcr->pool_type, rctx.store->pool_type, name_len);
1125 bstrncpy(dcr->media_type, rctx.store->media_type, name_len);
1126 bstrncpy(dcr->dev_name, rctx.device_name, name_len);
1127 if (rctx.store->append == SD_APPEND) {
1128 Dmsg2(dbglvl, "have_vol=%d vol=%s\n", rctx.have_volume, rctx.VolumeName);
1129 ok = reserve_device_for_append(dcr, rctx);
1134 rctx.jcr->dcr = dcr;
1135 Dmsg5(dbglvl, "Reserved=%d dev_name=%s mediatype=%s pool=%s ok=%d\n",
1136 dcr->dev->reserved_device,
1137 dcr->dev_name, dcr->media_type, dcr->pool_name, ok);
1138 if (!rctx.have_volume) {
1139 dcr->any_volume = true;
1140 if (dir_find_next_appendable_volume(dcr)) {
1141 bstrncpy(rctx.VolumeName, dcr->VolumeName, sizeof(rctx.VolumeName));
1142 Dmsg1(dbglvl, "looking for Volume=%s\n", rctx.VolumeName);
1143 rctx.have_volume = true;
1145 Dmsg0(dbglvl, "No next volume found\n");
1146 rctx.have_volume = false;
1147 rctx.VolumeName[0] = 0;
1149 * If there is at least one volume that is valid and in use,
1150 * but we get here, check if we are running with prefers
1151 * non-mounted drives. In that case, we have selected a
1152 * non-used drive and our one and only volume is mounted
1153 * elsewhere, so we bail out and retry using that drive.
1155 if (dcr->volume_in_use && !rctx.PreferMountedVols) {
1156 rctx.PreferMountedVols = true;
1157 if (dcr->VolumeName[0]) {
1163 * Note. Under some circumstances, the Director can hand us
1164 * a Volume name that is no the same as the one on the current
1165 * drive, and in that case, the call above to find the next
1166 * volume will fail because in attempting to reserve the Volume
1167 * the code will realize that we already have a tape mounted,
1168 * and it will fail. This *should* only happen if there are
1169 * writers, thus the following test. In that case, we simply
1170 * bail out, and continue waiting, rather than plunging on
1171 * and hoping that the operator can resolve the problem.
1173 if (dcr->dev->num_writers != 0) {
1174 if (dcr->VolumeName[0]) {
1182 ok = reserve_device_for_read(dcr);
1184 rctx.jcr->read_dcr = dcr;
1185 Dmsg5(dbglvl, "Read reserved=%d dev_name=%s mediatype=%s pool=%s ok=%d\n",
1186 dcr->dev->reserved_device,
1187 dcr->dev_name, dcr->media_type, dcr->pool_name, ok);
1193 if (rctx.notify_dir) {
1195 BSOCK *dir = rctx.jcr->dir_bsock;
1196 pm_strcpy(dev_name, rctx.device->hdr.name);
1197 bash_spaces(dev_name);
1198 ok = dir->fsend(OK_device, dev_name.c_str()); /* Return real device name */
1199 Dmsg1(dbglvl, ">dird: %s", dir->msg);
1206 rctx.have_volume = false;
1208 Dmsg0(dbglvl, "Not OK.\n");
1213 * We "reserve" the drive by setting the ST_READ bit. No one else
1214 * should touch the drive until that is cleared.
1215 * This allows the DIR to "reserve" the device before actually
1218 static bool reserve_device_for_read(DCR *dcr)
1220 DEVICE *dev = dcr->dev;
1221 JCR *jcr = dcr->jcr;
1228 if (is_device_unmounted(dev)) {
1229 Dmsg1(dbglvl, "Device %s is BLOCKED due to user unmount.\n", dev->print_name());
1230 Mmsg(jcr->errmsg, _("3601 JobId=%u device %s is BLOCKED due to user unmount.\n"),
1231 jcr->JobId, dev->print_name());
1232 queue_reserve_message(jcr);
1236 if (dev->is_busy()) {
1237 Dmsg4(dbglvl, "Device %s is busy ST_READ=%d num_writers=%d reserved=%d.\n",
1239 dev->state & ST_READ?1:0, dev->num_writers, dev->reserved_device);
1240 Mmsg(jcr->errmsg, _("3602 JobId=%u device %s is busy (already reading/writing).\n"),
1241 jcr->JobId, dev->print_name());
1242 queue_reserve_message(jcr);
1246 dev->clear_append();
1249 dev->reserved_device++;
1250 Dmsg3(dbglvl, "Inc reserve=%d dev=%s %p\n", dev->reserved_device, dev->print_name(), dev);
1251 dcr->reserved_device = true;
1260 * We reserve the device for appending by incrementing the
1261 * reserved_device. We do virtually all the same work that
1262 * is done in acquire_device_for_append(), but we do
1263 * not attempt to mount the device. This routine allows
1264 * the DIR to reserve multiple devices before *really*
1265 * starting the job. It also permits the SD to refuse
1266 * certain devices (not up, ...).
1268 * Note, in reserving a device, if the device is for the
1269 * same pool and the same pool type, then it is acceptable.
1270 * The Media Type has already been checked. If we are
1271 * the first tor reserve the device, we put the pool
1272 * name and pool type in the device record.
1274 static bool reserve_device_for_append(DCR *dcr, RCTX &rctx)
1276 JCR *jcr = dcr->jcr;
1277 DEVICE *dev = dcr->dev;
1284 /* If device is being read, we cannot write it */
1285 if (dev->can_read()) {
1286 Mmsg(jcr->errmsg, _("3603 JobId=%u device %s is busy reading.\n"),
1287 jcr->JobId, dev->print_name());
1288 Dmsg1(dbglvl, "%s", jcr->errmsg);
1289 queue_reserve_message(jcr);
1293 /* If device is unmounted, we are out of luck */
1294 if (is_device_unmounted(dev)) {
1295 Mmsg(jcr->errmsg, _("3604 JobId=%u device %s is BLOCKED due to user unmount.\n"),
1296 jcr->JobId, dev->print_name());
1297 Dmsg1(dbglvl, "%s", jcr->errmsg);
1298 queue_reserve_message(jcr);
1302 Dmsg1(dbglvl, "reserve_append device is %s\n", dev->print_name());
1304 /* Now do detailed tests ... */
1305 if (can_reserve_drive(dcr, rctx) != 1) {
1306 Dmsg0(dbglvl, "can_reserve_drive!=1\n");
1310 dev->reserved_device++;
1311 Dmsg3(dbglvl, "Inc reserve=%d dev=%s %p\n", dev->reserved_device,
1312 dev->print_name(), dev);
1313 dcr->reserved_device = true;
1321 static int is_pool_ok(DCR *dcr)
1323 DEVICE *dev = dcr->dev;
1324 JCR *jcr = dcr->jcr;
1326 /* Now check if we want the same Pool and pool type */
1327 if (strcmp(dev->pool_name, dcr->pool_name) == 0 &&
1328 strcmp(dev->pool_type, dcr->pool_type) == 0) {
1329 /* OK, compatible device */
1330 Dmsg1(dbglvl, "OK dev: %s num_writers=0, reserved, pool matches\n", dev->print_name());
1333 /* Drive Pool not suitable for us */
1334 Mmsg(jcr->errmsg, _(
1335 "3608 JobId=%u wants Pool=\"%s\" but have Pool=\"%s\" nreserve=%d on drive %s.\n"),
1336 (uint32_t)jcr->JobId, dcr->pool_name, dev->pool_name,
1337 dev->reserved_device, dev->print_name());
1338 queue_reserve_message(jcr);
1339 Dmsg2(dbglvl, "failed: busy num_writers=0, reserved, pool=%s wanted=%s\n",
1340 dev->pool_name, dcr->pool_name);
1345 static bool is_max_jobs_ok(DCR *dcr)
1347 DEVICE *dev = dcr->dev;
1348 JCR *jcr = dcr->jcr;
1350 Dmsg4(dbglvl, "MaxJobs=%d Jobs=%d reserves=%d Vol=%s\n",
1351 dcr->VolCatInfo.VolCatMaxJobs,
1352 dcr->VolCatInfo.VolCatJobs, dev->reserved_device,
1354 if (dcr->VolCatInfo.VolCatMaxJobs > 0 && dcr->VolCatInfo.VolCatMaxJobs <=
1355 (dcr->VolCatInfo.VolCatJobs + dev->reserved_device)) {
1356 /* Max Job Vols depassed or already reserved */
1357 Mmsg(jcr->errmsg, _("3610 JobId=%u Volume max jobs exceeded on drive %s.\n"),
1358 (uint32_t)jcr->JobId, dev->print_name());
1359 queue_reserve_message(jcr);
1360 Dmsg1(dbglvl, "reserve dev failed: %s", jcr->errmsg);
1361 return false; /* wait */
1367 * Returns: 1 if drive can be reserved
1368 * 0 if we should wait
1369 * -1 on error or impossibility
1371 static int can_reserve_drive(DCR *dcr, RCTX &rctx)
1373 DEVICE *dev = dcr->dev;
1374 JCR *jcr = dcr->jcr;
1376 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
1377 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
1378 rctx.autochanger_only, rctx.any_drive);
1380 /* Check for max jobs on this Volume */
1381 if (!is_max_jobs_ok(dcr)) {
1385 /* setting any_drive overrides PreferMountedVols flag */
1386 if (!rctx.any_drive) {
1388 * When PreferMountedVols is set, we keep track of the
1389 * drive in use that has the least number of writers, then if
1390 * no unmounted drive is found, we try that drive. This
1391 * helps spread the load to the least used drives.
1393 if (rctx.try_low_use_drive && dev == rctx.low_use_drive) {
1394 Dmsg2(dbglvl, "OK dev=%s == low_drive=%s.\n",
1395 dev->print_name(), rctx.low_use_drive->print_name());
1398 /* If he wants a free drive, but this one is busy, no go */
1399 if (!rctx.PreferMountedVols && dev->is_busy()) {
1400 /* Save least used drive */
1401 if ((dev->num_writers + dev->reserved_device) < rctx.num_writers) {
1402 rctx.num_writers = dev->num_writers + dev->reserved_device;
1403 rctx.low_use_drive = dev;
1404 Dmsg2(dbglvl, "set low use drive=%s num_writers=%d\n",
1405 dev->print_name(), rctx.num_writers);
1407 Dmsg1(dbglvl, "not low use num_writers=%d\n", dev->num_writers+dev->reserved_device);
1409 Dmsg0(dbglvl, "failed: !prefMnt && busy.\n");
1410 Mmsg(jcr->errmsg, _("3605 JobId=%u wants free drive but device %s is busy.\n"),
1411 jcr->JobId, dev->print_name());
1412 queue_reserve_message(jcr);
1416 /* Check for prefer mounted volumes */
1417 if (rctx.PreferMountedVols && !dev->vol && dev->is_tape()) {
1418 Mmsg(jcr->errmsg, _("3606 JobId=%u prefers mounted drives, but drive %s has no Volume.\n"),
1419 jcr->JobId, dev->print_name());
1420 queue_reserve_message(jcr);
1421 Dmsg0(dbglvl, "failed: want mounted -- no vol\n");
1422 return 0; /* No volume mounted */
1425 /* Check for exact Volume name match */
1426 /* ***FIXME*** for Disk, we can accept any volume that goes with this
1429 if (rctx.exact_match && rctx.have_volume) {
1431 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
1432 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
1433 rctx.autochanger_only, rctx.any_drive);
1434 Dmsg4(dbglvl, "have_vol=%d have=%s resvol=%s want=%s\n",
1435 rctx.have_volume, dev->VolHdr.VolumeName,
1436 dev->vol?dev->vol->vol_name:"*none*", rctx.VolumeName);
1437 ok = strcmp(dev->VolHdr.VolumeName, rctx.VolumeName) == 0 ||
1438 (dev->vol && strcmp(dev->vol->vol_name, rctx.VolumeName) == 0);
1440 Mmsg(jcr->errmsg, _("3607 JobId=%u wants Vol=\"%s\" drive has Vol=\"%s\" on drive %s.\n"),
1441 jcr->JobId, rctx.VolumeName, dev->VolHdr.VolumeName,
1443 queue_reserve_message(jcr);
1444 Dmsg3(dbglvl, "not OK: dev have=%s resvol=%s want=%s\n",
1445 dev->VolHdr.VolumeName, dev->vol?dev->vol->vol_name:"*none*", rctx.VolumeName);
1448 if (is_volume_in_use(dcr)) {
1449 return 0; /* fail if volume on another drive */
1454 /* Check for unused autochanger drive */
1455 if (rctx.autochanger_only && !dev->is_busy() &&
1456 dev->VolHdr.VolumeName[0] == 0) {
1457 /* Device is available but not yet reserved, reserve it for us */
1458 Dmsg1(dbglvl, "OK Res Unused autochanger %s.\n", dev->print_name());
1459 bstrncpy(dev->pool_name, dcr->pool_name, sizeof(dev->pool_name));
1460 bstrncpy(dev->pool_type, dcr->pool_type, sizeof(dev->pool_type));
1461 return 1; /* reserve drive */
1465 * Handle the case that there are no writers
1467 if (dev->num_writers == 0) {
1468 /* Now check if there are any reservations on the drive */
1469 if (dev->reserved_device) {
1470 return is_pool_ok(dcr);
1471 } else if (dev->can_append()) {
1472 if (is_pool_ok(dcr)) {
1475 /* Changing pool, unload old tape if any in drive */
1476 Dmsg0(dbglvl, "OK dev: num_writers=0, not reserved, pool change, unload changer\n");
1477 unload_autochanger(dcr, 0);
1480 /* Device is available but not yet reserved, reserve it for us */
1481 Dmsg1(dbglvl, "OK Dev avail reserved %s\n", dev->print_name());
1482 bstrncpy(dev->pool_name, dcr->pool_name, sizeof(dev->pool_name));
1483 bstrncpy(dev->pool_type, dcr->pool_type, sizeof(dev->pool_type));
1484 return 1; /* reserve drive */
1488 * Check if the device is in append mode with writers (i.e.
1489 * available if pool is the same).
1491 if (dev->can_append() || dev->num_writers > 0) {
1492 return is_pool_ok(dcr);
1494 Pmsg1(000, _("Logic error!!!! JobId=%u Should not get here.\n"), (int)jcr->JobId);
1495 Mmsg(jcr->errmsg, _("3910 JobId=%u Logic error!!!! drive %s Should not get here.\n"),
1496 jcr->JobId, dev->print_name());
1497 queue_reserve_message(jcr);
1498 Jmsg0(jcr, M_FATAL, 0, _("Logic error!!!! Should not get here.\n"));
1499 return -1; /* error, should not get here */
1501 Mmsg(jcr->errmsg, _("3911 JobId=%u failed reserve drive %s.\n"),
1502 jcr->JobId, dev->print_name());
1503 queue_reserve_message(jcr);
1504 Dmsg1(dbglvl, "failed: No reserve %s\n", dev->print_name());
1512 * Queue a reservation error or failure message for this jcr
1514 static void queue_reserve_message(JCR *jcr)
1522 msgs = jcr->reserve_msgs;
1527 * Look for duplicate message. If found, do
1530 for (i=msgs->size()-1; i >= 0; i--) {
1531 msg = (char *)msgs->get(i);
1535 /* Comparison based on 4 digit message number */
1536 if (strncmp(msg, jcr->errmsg, 4) == 0) {
1540 /* Message unique, so insert it */
1541 jcr->reserve_msgs->push(bstrdup(jcr->errmsg));
1548 * Send any reservation messages queued for this jcr
1550 void send_drive_reserve_messages(JCR *jcr, void sendit(const char *msg, int len, void *sarg), void *arg)
1557 msgs = jcr->reserve_msgs;
1558 if (!msgs || msgs->size() == 0) {
1561 for (i=msgs->size()-1; i >= 0; i--) {
1562 msg = (char *)msgs->get(i);
1564 sendit(" ", 3, arg);
1565 sendit(msg, strlen(msg), arg);
1576 * Pop and release any reservations messages
1578 static void pop_reserve_messages(JCR *jcr)
1584 msgs = jcr->reserve_msgs;
1588 while ((msg = (char *)msgs->pop())) {
1596 * Also called from acquire.c
1598 void release_reserve_messages(JCR *jcr)
1600 pop_reserve_messages(jcr);
1602 if (!jcr->reserve_msgs) {
1605 delete jcr->reserve_msgs;
1606 jcr->reserve_msgs = NULL;