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 if no one is using
460 * the volume, mark it unused.
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;
478 if (dev->reserved_device == 0 && dev->num_writers == 0) {
485 * Free a Volume from the Volume list if it is no longer used
486 * Note, for tape drives we want to remember where the Volume
487 * was when last used, so rather than free the volume entry,
488 * we simply mark it "released" so when the drive is really
489 * needed for another volume, we can reuse it.
491 * Returns: true if the Volume found and "removed" from the list
492 * false if the Volume is not in the list or is in use
494 bool volume_unused(DCR *dcr)
496 DEVICE *dev = dcr->dev;
498 if (dev->vol == NULL) {
499 Dmsg1(dbglvl, "vol_unused: no vol on %s\n", dev->print_name());
500 debug_list_volumes("null vol cannot unreserve_volume");
505 if (dev->is_busy()) {
506 Dmsg1(dbglvl, "vol_unused: busy on %s\n", dev->print_name());
507 debug_list_volumes("dev busy cannot unreserve_volume");
511 Dmsg2(dbglvl, "mark released. num_writers=%d reserved=%d\n",
512 dev->num_writers, dev->reserved_device);
515 * If this is a tape, we do not free the volume, rather we wait
516 * until the autoloader unloads it, or until another tape is
517 * explicitly read in this drive. This allows the SD to remember
518 * where the tapes are or last were.
520 dev->vol->released = true;
521 if (dev->is_tape() || dev->is_autochanger()) {
525 * Note, this frees the volume reservation entry, but the
526 * file descriptor remains open with the OS.
528 return free_volume(dev);
533 * Unconditionally release the volume entry
535 bool free_volume(DEVICE *dev)
539 if (dev->vol == NULL) {
540 Dmsg1(dbglvl, "No vol on dev %s\n", dev->print_name());
546 vol_list->remove(vol);
547 Dmsg2(dbglvl, "free_volume %s dev=%s\n", vol->vol_name, dev->print_name());
549 debug_list_volumes("free_volume");
555 /* Create the Volume list */
556 void create_volume_list()
559 if (vol_list == NULL) {
560 vol_list = New(dlist(vol, &vol->link));
564 /* Release all Volumes from the list */
565 void free_volume_list()
572 foreach_dlist(vol, vol_list) {
574 Dmsg2(dbglvl, "free vol_list Volume=%s dev=%s\n", vol->vol_name, vol->dev->print_name());
576 Dmsg1(dbglvl, "free vol_list Volume=%s No dev\n", vol->vol_name);
579 vol->vol_name = NULL;
586 bool is_volume_in_use(DCR *dcr)
588 VOLRES *vol = find_volume(dcr);
590 Dmsg1(dbglvl, "Vol=%s not in use.\n", dcr->VolumeName);
591 return false; /* vol not in list */
593 ASSERT(vol->dev != NULL);
595 if (dcr->dev == vol->dev) { /* same device OK */
596 Dmsg1(dbglvl, "Vol=%s on same dev.\n", dcr->VolumeName);
599 Dmsg3(dbglvl, "Vol=%s on %s we have %s\n", dcr->VolumeName,
600 vol->dev->print_name(), dcr->dev->print_name());
602 if (!vol->dev->is_busy()) {
603 Dmsg2(dbglvl, "Vol=%s dev=%s not busy.\n", dcr->VolumeName, vol->dev->print_name());
606 Dmsg2(dbglvl, "Vol=%s dev=%s busy.\n", dcr->VolumeName, vol->dev->print_name());
608 Dmsg2(dbglvl, "Vol=%s in use by %s.\n", dcr->VolumeName, vol->dev->print_name());
614 * We get the following type of information:
616 * use storage=xxx media_type=yyy pool_name=xxx pool_type=yyy append=1 copy=0 strip=0
620 * use storage=xxx media_type=yyy pool_name=xxx pool_type=yyy append=0 copy=0 strip=0
624 static bool use_storage_cmd(JCR *jcr)
626 POOL_MEM store_name, dev_name, media_type, pool_name, pool_type;
627 BSOCK *dir = jcr->dir_bsock;
635 memset(&rctx, 0, sizeof(RCTX));
638 * If there are multiple devices, the director sends us
639 * use_device for each device that it wants to use.
641 dirstore = New(alist(10, not_owned_by_alist));
642 jcr->reserve_msgs = New(alist(10, not_owned_by_alist));
644 Dmsg1(dbglvl, "<dird: %s", dir->msg);
645 ok = sscanf(dir->msg, use_storage, store_name.c_str(),
646 media_type.c_str(), pool_name.c_str(),
647 pool_type.c_str(), &append, &Copy, &Stripe) == 7;
652 jcr->write_store = dirstore;
654 jcr->read_store = dirstore;
656 rctx.append = append;
657 unbash_spaces(store_name);
658 unbash_spaces(media_type);
659 unbash_spaces(pool_name);
660 unbash_spaces(pool_type);
661 store = new DIRSTORE;
662 dirstore->append(store);
663 memset(store, 0, sizeof(DIRSTORE));
664 store->device = New(alist(10));
665 bstrncpy(store->name, store_name, sizeof(store->name));
666 bstrncpy(store->media_type, media_type, sizeof(store->media_type));
667 bstrncpy(store->pool_name, pool_name, sizeof(store->pool_name));
668 bstrncpy(store->pool_type, pool_type, sizeof(store->pool_type));
669 store->append = append;
671 /* Now get all devices */
672 while (dir->recv() >= 0) {
673 Dmsg1(dbglvl, "<dird device: %s", dir->msg);
674 ok = sscanf(dir->msg, use_device, dev_name.c_str()) == 1;
678 unbash_spaces(dev_name);
679 store->device->append(bstrdup(dev_name.c_str()));
681 } while (ok && dir->recv() >= 0);
683 /* Developer debug code */
685 if (debug_level >= dbglvl) {
686 foreach_alist(store, dirstore) {
687 Dmsg5(dbglvl, "Storage=%s media_type=%s pool=%s pool_type=%s append=%d\n",
688 store->name, store->media_type, store->pool_name,
689 store->pool_type, store->append);
690 foreach_alist(device_name, store->device) {
691 Dmsg1(dbglvl, " Device=%s\n", device_name);
696 init_jcr_device_wait_timers(jcr);
697 jcr->dcr = new_dcr(jcr, NULL, NULL); /* get a dcr */
699 BSOCK *dir = jcr->dir_bsock;
700 dir->fsend(_("3939 Could not get dcr\n"));
701 Dmsg1(dbglvl, ">dird: %s", dir->msg);
705 * At this point, we have a list of all the Director's Storage
706 * resources indicated for this Job, which include Pool, PoolType,
707 * storage name, and Media type.
708 * Then for each of the Storage resources, we have a list of
709 * device names that were given.
711 * Wiffle through them and find one that can do the backup.
714 int wait_for_device_retries = 0;
717 rctx.notify_dir = true;
720 for ( ; !fail && !job_canceled(jcr); ) {
721 pop_reserve_messages(jcr);
722 rctx.suitable_device = false;
723 rctx.have_volume = false;
724 rctx.VolumeName[0] = 0;
725 rctx.any_drive = false;
726 if (!jcr->PreferMountedVols) {
728 * Here we try to find a drive that is not used.
729 * This will maximize the use of available drives.
732 rctx.num_writers = 20000000; /* start with impossible number */
733 rctx.low_use_drive = NULL;
734 rctx.PreferMountedVols = false;
735 rctx.exact_match = false;
736 rctx.autochanger_only = true;
737 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
738 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
739 rctx.autochanger_only, rctx.any_drive);
740 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
743 /* Look through all drives possibly for low_use drive */
744 if (rctx.low_use_drive) {
745 rctx.try_low_use_drive = true;
746 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
749 rctx.try_low_use_drive = false;
751 rctx.autochanger_only = false;
752 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
753 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
754 rctx.autochanger_only, rctx.any_drive);
755 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
760 * Now we look for a drive that may or may not be in
763 /* Look for an exact Volume match all drives */
764 rctx.PreferMountedVols = true;
765 rctx.exact_match = true;
766 rctx.autochanger_only = false;
767 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
768 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
769 rctx.autochanger_only, rctx.any_drive);
770 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
773 /* Look for any mounted drive */
774 rctx.exact_match = false;
775 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
776 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
777 rctx.autochanger_only, rctx.any_drive);
778 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
782 rctx.any_drive = true;
783 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
784 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
785 rctx.autochanger_only, rctx.any_drive);
786 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
789 /* Keep reservations locked *except* during wait_for_device() */
790 unlock_reservations();
792 * The idea of looping on repeat a few times it to ensure
793 * that if there is some subtle timing problem between two
794 * jobs, we will simply try again, and most likely succeed.
795 * This can happen if one job reserves a drive or finishes using
796 * a drive at the same time a second job wants it.
798 if (repeat++ > 1) { /* try algorithm 3 times */
799 bmicrosleep(30, 0); /* wait a bit */
800 Dmsg0(dbglvl, "repeat reserve algorithm\n");
801 } else if (!rctx.suitable_device || !wait_for_device(jcr, wait_for_device_retries)) {
802 Dmsg0(dbglvl, "Fail. !suitable_device || !wait_for_device\n");
806 dir->signal(BNET_HEARTBEAT); /* Inform Dir that we are alive */
808 unlock_reservations();
811 * If we get here, there are no suitable devices available, which
812 * means nothing configured. If a device is suitable but busy
813 * with another Volume, we will not come here.
815 unbash_spaces(dir->msg);
816 pm_strcpy(jcr->errmsg, dir->msg);
817 Jmsg(jcr, M_INFO, 0, _("Failed command: %s\n"), jcr->errmsg);
818 Jmsg(jcr, M_FATAL, 0, _("\n"
819 " Device \"%s\" with MediaType \"%s\" requested by DIR not found in SD Device resources.\n"),
820 dev_name.c_str(), media_type.c_str());
821 dir->fsend(NO_device, dev_name.c_str());
823 Dmsg1(dbglvl, ">dird: %s", dir->msg);
826 unbash_spaces(dir->msg);
827 pm_strcpy(jcr->errmsg, dir->msg);
828 Jmsg(jcr, M_FATAL, 0, _("Failed command: %s\n"), jcr->errmsg);
829 dir->fsend(BAD_use, jcr->errmsg);
830 Dmsg1(dbglvl, ">dird: %s", dir->msg);
833 release_reserve_messages(jcr);
839 * Walk through the autochanger resources and check if
840 * the volume is in one of them.
842 * Returns: true if volume is in device
845 static bool is_vol_in_autochanger(RCTX &rctx, VOLRES *vol)
847 AUTOCHANGER *changer = vol->dev->device->changer_res;
849 /* Find resource, and make sure we were able to open it */
850 if (strcmp(rctx.device_name, changer->hdr.name) == 0) {
851 Dmsg1(dbglvl, "Found changer device %s\n", vol->dev->device->hdr.name);
854 Dmsg1(dbglvl, "Incorrect changer device %s\n", changer->hdr.name);
859 * Search for a device suitable for this job.
861 bool find_suitable_device_for_job(JCR *jcr, RCTX &rctx)
870 dirstore = jcr->write_store;
872 dirstore = jcr->read_store;
874 Dmsg4(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d\n",
875 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
876 rctx.autochanger_only);
879 * If the appropriate conditions of this if are met, namely that
880 * we are appending and the user wants mounted drive (or we
881 * force try a mounted drive because they are all busy), we
882 * start by looking at all the Volumes in the volume list.
884 if (!vol_list->empty() && rctx.append && rctx.PreferMountedVols) {
885 dlist *temp_vol_list, *save_vol_list;
888 Dmsg0(dbglvl, "lock volumes\n");
891 * Create a temporary copy of the volume list. We do this,
892 * to avoid having the volume list locked during the
893 * call to reserve_device(), which would cause a deadlock.
894 * Note, we may want to add an update counter on the vol_list
895 * so that if it is modified while we are traversing the copy
896 * we can take note and act accordingly (probably redo the
897 * search at least a few times).
899 Dmsg0(dbglvl, "duplicate vol list\n");
900 temp_vol_list = New(dlist(vol, &vol->link));
901 foreach_dlist(vol, vol_list) {
903 VOLRES *tvol = (VOLRES *)malloc(sizeof(VOLRES));
904 memset(tvol, 0, sizeof(VOLRES));
905 tvol->vol_name = bstrdup(vol->vol_name);
906 tvol->dev = vol->dev;
907 nvol = (VOLRES *)temp_vol_list->binary_insert(tvol, my_compare);
909 tvol->dev = NULL; /* don't zap dev entry */
911 Pmsg0(000, "Logic error. Duplicating vol list hit duplicate.\n");
912 Jmsg(jcr, M_WARNING, 0, "Logic error. Duplicating vol list hit duplicate.\n");
915 Dmsg0(dbglvl, "unlock volumes\n");
918 /* Look through reserved volumes for one we can use */
919 Dmsg0(dbglvl, "look for vol in vol list\n");
920 foreach_dlist(vol, temp_vol_list) {
922 Dmsg1(dbglvl, "vol=%s no dev\n", vol->vol_name);
925 /* Check with Director if this Volume is OK */
926 bstrncpy(dcr->VolumeName, vol->vol_name, sizeof(dcr->VolumeName));
927 if (!dir_get_volume_info(dcr, GET_VOL_INFO_FOR_WRITE)) {
931 Dmsg1(dbglvl, "vol=%s OK for this job\n", vol->vol_name);
932 foreach_alist(store, dirstore) {
935 foreach_alist(device_name, store->device) {
936 /* Found a device, try to use it */
937 rctx.device_name = device_name;
938 rctx.device = vol->dev->device;
940 if (vol->dev->is_autochanger()) {
941 Dmsg1(dbglvl, "vol=%s is in changer\n", vol->vol_name);
942 if (!is_vol_in_autochanger(rctx, vol)) {
945 } else if (strcmp(device_name, vol->dev->device->hdr.name) != 0) {
946 Dmsg2(dbglvl, "device=%s not suitable want %s\n",
947 vol->dev->device->hdr.name, device_name);
951 bstrncpy(rctx.VolumeName, vol->vol_name, sizeof(rctx.VolumeName));
952 rctx.have_volume = true;
953 /* Try reserving this device and volume */
954 Dmsg2(dbglvl, "try vol=%s on device=%s\n", rctx.VolumeName, device_name);
955 stat = reserve_device(rctx);
956 if (stat == 1) { /* found available device */
957 Dmsg1(dbglvl, "Suitable device found=%s\n", device_name);
960 } else if (stat == 0) { /* device busy */
961 Dmsg1(dbglvl, "Suitable device=%s, busy: not use\n", device_name);
963 /* otherwise error */
964 Dmsg0(dbglvl, "No suitable device found.\n");
966 rctx.have_volume = false;
975 } /* end for loop over reserved volumes */
977 Dmsg0(dbglvl, "lock volumes\n");
979 save_vol_list = vol_list;
980 vol_list = temp_vol_list;
981 free_volume_list(); /* release temp_vol_list */
982 vol_list = save_vol_list;
983 Dmsg0(dbglvl, "deleted temp vol list\n");
984 Dmsg0(dbglvl, "unlock volumes\n");
986 debug_list_volumes("=== After free temp table\n");
989 Dmsg1(dbglvl, "got vol %s from in-use vols list\n", rctx.VolumeName);
994 * No reserved volume we can use, so now search for an available device.
996 * For each storage device that the user specified, we
997 * search and see if there is a resource for that device.
999 foreach_alist(store, dirstore) {
1001 foreach_alist(device_name, store->device) {
1003 rctx.device_name = device_name;
1004 stat = search_res_for_device(rctx);
1005 if (stat == 1) { /* found available device */
1006 Dmsg1(dbglvl, "available device found=%s\n", device_name);
1009 } else if (stat == 0) { /* device busy */
1010 Dmsg1(dbglvl, "Suitable device=%s, busy: not use\n", device_name);
1012 /* otherwise error */
1013 Dmsg0(dbglvl, "No suitable device found.\n");
1024 * Search for a particular storage device with particular storage
1025 * characteristics (MediaType).
1027 int search_res_for_device(RCTX &rctx)
1029 AUTOCHANGER *changer;
1032 Dmsg1(dbglvl, "search res for %s\n", rctx.device_name);
1033 /* Look through Autochangers first */
1034 foreach_res(changer, R_AUTOCHANGER) {
1035 Dmsg1(dbglvl, "Try match changer res=%s\n", changer->hdr.name);
1036 /* Find resource, and make sure we were able to open it */
1037 if (strcmp(rctx.device_name, changer->hdr.name) == 0) {
1038 /* Try each device in this AutoChanger */
1039 foreach_alist(rctx.device, changer->device) {
1040 Dmsg1(dbglvl, "Try changer device %s\n", rctx.device->hdr.name);
1041 stat = reserve_device(rctx);
1042 if (stat != 1) { /* try another device */
1046 if (rctx.store->append == SD_APPEND) {
1047 Dmsg2(dbglvl, "Device %s reserved=%d for append.\n",
1048 rctx.device->hdr.name, rctx.jcr->dcr->dev->reserved_device);
1050 Dmsg2(dbglvl, "Device %s reserved=%d for read.\n",
1051 rctx.device->hdr.name, rctx.jcr->read_dcr->dev->reserved_device);
1058 /* Now if requested look through regular devices */
1059 if (!rctx.autochanger_only) {
1060 foreach_res(rctx.device, R_DEVICE) {
1061 Dmsg1(dbglvl, "Try match res=%s\n", rctx.device->hdr.name);
1062 /* Find resource, and make sure we were able to open it */
1063 if (strcmp(rctx.device_name, rctx.device->hdr.name) == 0) {
1064 stat = reserve_device(rctx);
1065 if (stat != 1) { /* try another device */
1069 if (rctx.store->append == SD_APPEND) {
1070 Dmsg2(dbglvl, "Device %s reserved=%d for append.\n",
1071 rctx.device->hdr.name, rctx.jcr->dcr->dev->reserved_device);
1073 Dmsg2(dbglvl, "Device %s reserved=%d for read.\n",
1074 rctx.device->hdr.name, rctx.jcr->read_dcr->dev->reserved_device);
1080 return -1; /* nothing found */
1084 * Try to reserve a specific device.
1086 * Returns: 1 -- OK, have DCR
1090 static int reserve_device(RCTX &rctx)
1094 const int name_len = MAX_NAME_LENGTH;
1096 /* Make sure MediaType is OK */
1097 Dmsg2(dbglvl, "chk MediaType device=%s request=%s\n",
1098 rctx.device->media_type, rctx.store->media_type);
1099 if (strcmp(rctx.device->media_type, rctx.store->media_type) != 0) {
1103 /* Make sure device exists -- i.e. we can stat() it */
1104 if (!rctx.device->dev) {
1105 rctx.device->dev = init_dev(rctx.jcr, rctx.device);
1107 if (!rctx.device->dev) {
1108 if (rctx.device->changer_res) {
1109 Jmsg(rctx.jcr, M_WARNING, 0, _("\n"
1110 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
1111 rctx.device->hdr.name, rctx.device_name);
1113 Jmsg(rctx.jcr, M_WARNING, 0, _("\n"
1114 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
1117 return -1; /* no use waiting */
1120 rctx.suitable_device = true;
1121 Dmsg1(dbglvl, "try reserve %s\n", rctx.device->hdr.name);
1122 rctx.jcr->dcr = dcr = new_dcr(rctx.jcr, rctx.jcr->dcr, rctx.device->dev);
1124 BSOCK *dir = rctx.jcr->dir_bsock;
1125 dir->fsend(_("3926 Could not get dcr for device: %s\n"), rctx.device_name);
1126 Dmsg1(dbglvl, ">dird: %s", dir->msg);
1129 bstrncpy(dcr->pool_name, rctx.store->pool_name, name_len);
1130 bstrncpy(dcr->pool_type, rctx.store->pool_type, name_len);
1131 bstrncpy(dcr->media_type, rctx.store->media_type, name_len);
1132 bstrncpy(dcr->dev_name, rctx.device_name, name_len);
1133 if (rctx.store->append == SD_APPEND) {
1134 Dmsg2(dbglvl, "have_vol=%d vol=%s\n", rctx.have_volume, rctx.VolumeName);
1135 ok = reserve_device_for_append(dcr, rctx);
1140 rctx.jcr->dcr = dcr;
1141 Dmsg5(dbglvl, "Reserved=%d dev_name=%s mediatype=%s pool=%s ok=%d\n",
1142 dcr->dev->reserved_device,
1143 dcr->dev_name, dcr->media_type, dcr->pool_name, ok);
1144 if (!rctx.have_volume) {
1145 dcr->any_volume = true;
1146 if (dir_find_next_appendable_volume(dcr)) {
1147 bstrncpy(rctx.VolumeName, dcr->VolumeName, sizeof(rctx.VolumeName));
1148 Dmsg1(dbglvl, "looking for Volume=%s\n", rctx.VolumeName);
1149 rctx.have_volume = true;
1151 Dmsg0(dbglvl, "No next volume found\n");
1152 rctx.have_volume = false;
1153 rctx.VolumeName[0] = 0;
1155 * If there is at least one volume that is valid and in use,
1156 * but we get here, check if we are running with prefers
1157 * non-mounted drives. In that case, we have selected a
1158 * non-used drive and our one and only volume is mounted
1159 * elsewhere, so we bail out and retry using that drive.
1161 if (dcr->volume_in_use && !rctx.PreferMountedVols) {
1162 rctx.PreferMountedVols = true;
1163 if (dcr->VolumeName[0]) {
1169 * Note. Under some circumstances, the Director can hand us
1170 * a Volume name that is no the same as the one on the current
1171 * drive, and in that case, the call above to find the next
1172 * volume will fail because in attempting to reserve the Volume
1173 * the code will realize that we already have a tape mounted,
1174 * and it will fail. This *should* only happen if there are
1175 * writers, thus the following test. In that case, we simply
1176 * bail out, and continue waiting, rather than plunging on
1177 * and hoping that the operator can resolve the problem.
1179 if (dcr->dev->num_writers != 0) {
1180 if (dcr->VolumeName[0]) {
1188 ok = reserve_device_for_read(dcr);
1190 rctx.jcr->read_dcr = dcr;
1191 Dmsg5(dbglvl, "Read reserved=%d dev_name=%s mediatype=%s pool=%s ok=%d\n",
1192 dcr->dev->reserved_device,
1193 dcr->dev_name, dcr->media_type, dcr->pool_name, ok);
1199 if (rctx.notify_dir) {
1201 BSOCK *dir = rctx.jcr->dir_bsock;
1202 pm_strcpy(dev_name, rctx.device->hdr.name);
1203 bash_spaces(dev_name);
1204 ok = dir->fsend(OK_device, dev_name.c_str()); /* Return real device name */
1205 Dmsg1(dbglvl, ">dird: %s", dir->msg);
1212 rctx.have_volume = false;
1214 Dmsg0(dbglvl, "Not OK.\n");
1219 * We "reserve" the drive by setting the ST_READ bit. No one else
1220 * should touch the drive until that is cleared.
1221 * This allows the DIR to "reserve" the device before actually
1224 static bool reserve_device_for_read(DCR *dcr)
1226 DEVICE *dev = dcr->dev;
1227 JCR *jcr = dcr->jcr;
1234 if (is_device_unmounted(dev)) {
1235 Dmsg1(dbglvl, "Device %s is BLOCKED due to user unmount.\n", dev->print_name());
1236 Mmsg(jcr->errmsg, _("3601 JobId=%u device %s is BLOCKED due to user unmount.\n"),
1237 jcr->JobId, dev->print_name());
1238 queue_reserve_message(jcr);
1242 if (dev->is_busy()) {
1243 Dmsg4(dbglvl, "Device %s is busy ST_READ=%d num_writers=%d reserved=%d.\n",
1245 dev->state & ST_READ?1:0, dev->num_writers, dev->reserved_device);
1246 Mmsg(jcr->errmsg, _("3602 JobId=%u device %s is busy (already reading/writing).\n"),
1247 jcr->JobId, dev->print_name());
1248 queue_reserve_message(jcr);
1252 dev->clear_append();
1255 dev->reserved_device++;
1256 Dmsg3(dbglvl, "Inc reserve=%d dev=%s %p\n", dev->reserved_device, dev->print_name(), dev);
1257 dcr->reserved_device = true;
1266 * We reserve the device for appending by incrementing the
1267 * reserved_device. We do virtually all the same work that
1268 * is done in acquire_device_for_append(), but we do
1269 * not attempt to mount the device. This routine allows
1270 * the DIR to reserve multiple devices before *really*
1271 * starting the job. It also permits the SD to refuse
1272 * certain devices (not up, ...).
1274 * Note, in reserving a device, if the device is for the
1275 * same pool and the same pool type, then it is acceptable.
1276 * The Media Type has already been checked. If we are
1277 * the first tor reserve the device, we put the pool
1278 * name and pool type in the device record.
1280 static bool reserve_device_for_append(DCR *dcr, RCTX &rctx)
1282 JCR *jcr = dcr->jcr;
1283 DEVICE *dev = dcr->dev;
1290 /* If device is being read, we cannot write it */
1291 if (dev->can_read()) {
1292 Mmsg(jcr->errmsg, _("3603 JobId=%u device %s is busy reading.\n"),
1293 jcr->JobId, dev->print_name());
1294 Dmsg1(dbglvl, "%s", jcr->errmsg);
1295 queue_reserve_message(jcr);
1299 /* If device is unmounted, we are out of luck */
1300 if (is_device_unmounted(dev)) {
1301 Mmsg(jcr->errmsg, _("3604 JobId=%u device %s is BLOCKED due to user unmount.\n"),
1302 jcr->JobId, dev->print_name());
1303 Dmsg1(dbglvl, "%s", jcr->errmsg);
1304 queue_reserve_message(jcr);
1308 Dmsg1(dbglvl, "reserve_append device is %s\n", dev->print_name());
1310 /* Now do detailed tests ... */
1311 if (can_reserve_drive(dcr, rctx) != 1) {
1312 Dmsg0(dbglvl, "can_reserve_drive!=1\n");
1316 dev->reserved_device++;
1317 Dmsg3(dbglvl, "Inc reserve=%d dev=%s %p\n", dev->reserved_device,
1318 dev->print_name(), dev);
1319 dcr->reserved_device = true;
1327 static int is_pool_ok(DCR *dcr)
1329 DEVICE *dev = dcr->dev;
1330 JCR *jcr = dcr->jcr;
1332 /* Now check if we want the same Pool and pool type */
1333 if (strcmp(dev->pool_name, dcr->pool_name) == 0 &&
1334 strcmp(dev->pool_type, dcr->pool_type) == 0) {
1335 /* OK, compatible device */
1336 Dmsg1(dbglvl, "OK dev: %s num_writers=0, reserved, pool matches\n", dev->print_name());
1339 /* Drive Pool not suitable for us */
1340 Mmsg(jcr->errmsg, _(
1341 "3608 JobId=%u wants Pool=\"%s\" but have Pool=\"%s\" nreserve=%d on drive %s.\n"),
1342 (uint32_t)jcr->JobId, dcr->pool_name, dev->pool_name,
1343 dev->reserved_device, dev->print_name());
1344 queue_reserve_message(jcr);
1345 Dmsg2(dbglvl, "failed: busy num_writers=0, reserved, pool=%s wanted=%s\n",
1346 dev->pool_name, dcr->pool_name);
1351 static bool is_max_jobs_ok(DCR *dcr)
1353 DEVICE *dev = dcr->dev;
1354 JCR *jcr = dcr->jcr;
1356 Dmsg4(dbglvl, "MaxJobs=%d Jobs=%d reserves=%d Vol=%s\n",
1357 dcr->VolCatInfo.VolCatMaxJobs,
1358 dcr->VolCatInfo.VolCatJobs, dev->reserved_device,
1360 if (dcr->VolCatInfo.VolCatMaxJobs > 0 && dcr->VolCatInfo.VolCatMaxJobs <=
1361 (dcr->VolCatInfo.VolCatJobs + dev->reserved_device)) {
1362 /* Max Job Vols depassed or already reserved */
1363 Mmsg(jcr->errmsg, _("3610 JobId=%u Volume max jobs exceeded on drive %s.\n"),
1364 (uint32_t)jcr->JobId, dev->print_name());
1365 queue_reserve_message(jcr);
1366 Dmsg1(dbglvl, "reserve dev failed: %s", jcr->errmsg);
1367 return false; /* wait */
1373 * Returns: 1 if drive can be reserved
1374 * 0 if we should wait
1375 * -1 on error or impossibility
1377 static int can_reserve_drive(DCR *dcr, RCTX &rctx)
1379 DEVICE *dev = dcr->dev;
1380 JCR *jcr = dcr->jcr;
1382 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
1383 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
1384 rctx.autochanger_only, rctx.any_drive);
1386 /* Check for max jobs on this Volume */
1387 if (!is_max_jobs_ok(dcr)) {
1391 /* setting any_drive overrides PreferMountedVols flag */
1392 if (!rctx.any_drive) {
1394 * When PreferMountedVols is set, we keep track of the
1395 * drive in use that has the least number of writers, then if
1396 * no unmounted drive is found, we try that drive. This
1397 * helps spread the load to the least used drives.
1399 if (rctx.try_low_use_drive && dev == rctx.low_use_drive) {
1400 Dmsg2(dbglvl, "OK dev=%s == low_drive=%s.\n",
1401 dev->print_name(), rctx.low_use_drive->print_name());
1404 /* If he wants a free drive, but this one is busy, no go */
1405 if (!rctx.PreferMountedVols && dev->is_busy()) {
1406 /* Save least used drive */
1407 if ((dev->num_writers + dev->reserved_device) < rctx.num_writers) {
1408 rctx.num_writers = dev->num_writers + dev->reserved_device;
1409 rctx.low_use_drive = dev;
1410 Dmsg2(dbglvl, "set low use drive=%s num_writers=%d\n",
1411 dev->print_name(), rctx.num_writers);
1413 Dmsg1(dbglvl, "not low use num_writers=%d\n", dev->num_writers+dev->reserved_device);
1415 Dmsg0(dbglvl, "failed: !prefMnt && busy.\n");
1416 Mmsg(jcr->errmsg, _("3605 JobId=%u wants free drive but device %s is busy.\n"),
1417 jcr->JobId, dev->print_name());
1418 queue_reserve_message(jcr);
1422 /* Check for prefer mounted volumes */
1423 if (rctx.PreferMountedVols && !dev->vol && dev->is_tape()) {
1424 Mmsg(jcr->errmsg, _("3606 JobId=%u prefers mounted drives, but drive %s has no Volume.\n"),
1425 jcr->JobId, dev->print_name());
1426 queue_reserve_message(jcr);
1427 Dmsg0(dbglvl, "failed: want mounted -- no vol\n");
1428 return 0; /* No volume mounted */
1431 /* Check for exact Volume name match */
1432 /* ***FIXME*** for Disk, we can accept any volume that goes with this
1435 if (rctx.exact_match && rctx.have_volume) {
1437 Dmsg5(dbglvl, "PrefMnt=%d exact=%d suitable=%d chgronly=%d any=%d\n",
1438 rctx.PreferMountedVols, rctx.exact_match, rctx.suitable_device,
1439 rctx.autochanger_only, rctx.any_drive);
1440 Dmsg4(dbglvl, "have_vol=%d have=%s resvol=%s want=%s\n",
1441 rctx.have_volume, dev->VolHdr.VolumeName,
1442 dev->vol?dev->vol->vol_name:"*none*", rctx.VolumeName);
1443 ok = strcmp(dev->VolHdr.VolumeName, rctx.VolumeName) == 0 ||
1444 (dev->vol && strcmp(dev->vol->vol_name, rctx.VolumeName) == 0);
1446 Mmsg(jcr->errmsg, _("3607 JobId=%u wants Vol=\"%s\" drive has Vol=\"%s\" on drive %s.\n"),
1447 jcr->JobId, rctx.VolumeName, dev->VolHdr.VolumeName,
1449 queue_reserve_message(jcr);
1450 Dmsg3(dbglvl, "not OK: dev have=%s resvol=%s want=%s\n",
1451 dev->VolHdr.VolumeName, dev->vol?dev->vol->vol_name:"*none*", rctx.VolumeName);
1454 if (is_volume_in_use(dcr)) {
1455 return 0; /* fail if volume on another drive */
1460 /* Check for unused autochanger drive */
1461 if (rctx.autochanger_only && !dev->is_busy() &&
1462 dev->VolHdr.VolumeName[0] == 0) {
1463 /* Device is available but not yet reserved, reserve it for us */
1464 Dmsg1(dbglvl, "OK Res Unused autochanger %s.\n", dev->print_name());
1465 bstrncpy(dev->pool_name, dcr->pool_name, sizeof(dev->pool_name));
1466 bstrncpy(dev->pool_type, dcr->pool_type, sizeof(dev->pool_type));
1467 return 1; /* reserve drive */
1471 * Handle the case that there are no writers
1473 if (dev->num_writers == 0) {
1474 /* Now check if there are any reservations on the drive */
1475 if (dev->reserved_device) {
1476 return is_pool_ok(dcr);
1477 } else if (dev->can_append()) {
1478 if (is_pool_ok(dcr)) {
1481 /* Changing pool, unload old tape if any in drive */
1482 Dmsg0(dbglvl, "OK dev: num_writers=0, not reserved, pool change, unload changer\n");
1483 unload_autochanger(dcr, 0);
1486 /* Device is available but not yet reserved, reserve it for us */
1487 Dmsg1(dbglvl, "OK Dev avail reserved %s\n", dev->print_name());
1488 bstrncpy(dev->pool_name, dcr->pool_name, sizeof(dev->pool_name));
1489 bstrncpy(dev->pool_type, dcr->pool_type, sizeof(dev->pool_type));
1490 return 1; /* reserve drive */
1494 * Check if the device is in append mode with writers (i.e.
1495 * available if pool is the same).
1497 if (dev->can_append() || dev->num_writers > 0) {
1498 return is_pool_ok(dcr);
1500 Pmsg1(000, _("Logic error!!!! JobId=%u Should not get here.\n"), (int)jcr->JobId);
1501 Mmsg(jcr->errmsg, _("3910 JobId=%u Logic error!!!! drive %s Should not get here.\n"),
1502 jcr->JobId, dev->print_name());
1503 queue_reserve_message(jcr);
1504 Jmsg0(jcr, M_FATAL, 0, _("Logic error!!!! Should not get here.\n"));
1505 return -1; /* error, should not get here */
1507 Mmsg(jcr->errmsg, _("3911 JobId=%u failed reserve drive %s.\n"),
1508 jcr->JobId, dev->print_name());
1509 queue_reserve_message(jcr);
1510 Dmsg1(dbglvl, "failed: No reserve %s\n", dev->print_name());
1518 * Queue a reservation error or failure message for this jcr
1520 static void queue_reserve_message(JCR *jcr)
1528 msgs = jcr->reserve_msgs;
1533 * Look for duplicate message. If found, do
1536 for (i=msgs->size()-1; i >= 0; i--) {
1537 msg = (char *)msgs->get(i);
1541 /* Comparison based on 4 digit message number */
1542 if (strncmp(msg, jcr->errmsg, 4) == 0) {
1546 /* Message unique, so insert it */
1547 jcr->reserve_msgs->push(bstrdup(jcr->errmsg));
1554 * Send any reservation messages queued for this jcr
1556 void send_drive_reserve_messages(JCR *jcr, void sendit(const char *msg, int len, void *sarg), void *arg)
1563 msgs = jcr->reserve_msgs;
1564 if (!msgs || msgs->size() == 0) {
1567 for (i=msgs->size()-1; i >= 0; i--) {
1568 msg = (char *)msgs->get(i);
1570 sendit(" ", 3, arg);
1571 sendit(msg, strlen(msg), arg);
1582 * Pop and release any reservations messages
1584 static void pop_reserve_messages(JCR *jcr)
1590 msgs = jcr->reserve_msgs;
1594 while ((msg = (char *)msgs->pop())) {
1602 * Also called from acquire.c
1604 void release_reserve_messages(JCR *jcr)
1606 pop_reserve_messages(jcr);
1608 if (!jcr->reserve_msgs) {
1611 delete jcr->reserve_msgs;
1612 jcr->reserve_msgs = NULL;