2 * Drive reservation functions for Storage Daemon
6 * Split from job.c and acquire.c June 2005
12 Copyright (C) 2000-2005 Kern Sibbald
14 This program is free software; you can redistribute it and/or
15 modify it under the terms of the GNU General Public License
16 version 2 as amended with additional clauses defined in the
17 file LICENSE in the main source directory.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 the file LICENSE for additional details.
30 * Use Device command from Director
31 * He tells is what Device Name to use, the Media Type,
32 * the Pool Name, and the Pool Type.
34 * Ensure that the device exists and is opened, then store
35 * the media and pool info in the JCR. This class is used
36 * only temporarily in this file.
42 char name[MAX_NAME_LENGTH];
43 char media_type[MAX_NAME_LENGTH];
44 char pool_name[MAX_NAME_LENGTH];
45 char pool_type[MAX_NAME_LENGTH];
56 bool PreferMountedVols;
60 bool available_autochanger;
61 char VolumeName[MAX_NAME_LENGTH];
64 static dlist *vol_list = NULL;
65 static pthread_mutex_t vol_list_lock = PTHREAD_MUTEX_INITIALIZER;
66 static pthread_mutex_t search_lock = PTHREAD_MUTEX_INITIALIZER;
68 /* Forward referenced functions */
69 static int can_reserve_drive(DCR *dcr, RCTX &rctx);
70 static int search_res_for_device(RCTX &rctx);
71 static int reserve_device(RCTX &rctx);
72 static bool reserve_device_for_read(DCR *dcr);
73 static bool reserve_device_for_append(DCR *dcr, RCTX &rctx);
74 static bool use_storage_cmd(JCR *jcr);
75 bool find_suitable_device_for_job(JCR *jcr, RCTX &rctx);
77 /* Requests from the Director daemon */
78 static char use_storage[] = "use storage=%127s media_type=%127s "
79 "pool_name=%127s pool_type=%127s append=%d copy=%d stripe=%d\n";
80 static char use_device[] = "use device=%127s\n";
82 /* Responses sent to Director daemon */
83 static char OK_device[] = "3000 OK use device device=%s\n";
84 static char NO_device[] = "3924 Device \"%s\" not in SD Device resources.\n";
85 static char BAD_use[] = "3913 Bad use command: %s\n";
87 bool use_cmd(JCR *jcr)
90 * Get the device, media, and pool information
92 if (!use_storage_cmd(jcr)) {
93 set_jcr_job_status(jcr, JS_ErrorTerminated);
94 memset(jcr->sd_auth_key, 0, strlen(jcr->sd_auth_key));
100 static int my_compare(void *item1, void *item2)
102 return strcmp(((VOLRES *)item1)->vol_name, ((VOLRES *)item2)->vol_name);
107 * Put a new Volume entry in the Volume list. This
108 * effectively reserves the volume so that it will
109 * not be mounted again.
111 * Return: VOLRES entry on success
112 * NULL if the Volume is already in the list
114 VOLRES *new_volume(DCR *dcr, const char *VolumeName)
118 Dmsg1(400, "new_volume %s\n", VolumeName);
122 foreach_dlist(vol, vol_list) {
123 if (vol && vol->dev == dcr->dev) {
124 vol_list->remove(vol);
133 vol = (VOLRES *)malloc(sizeof(VOLRES));
134 memset(vol, 0, sizeof(VOLRES));
135 vol->vol_name = bstrdup(VolumeName);
138 nvol = (VOLRES *)vol_list->binary_insert(vol, my_compare);
144 nvol->dev = dcr->dev;
152 * Search for a Volume name in the Volume list.
154 * Returns: VOLRES entry on success
155 * NULL if the Volume is not in the list
157 VOLRES *find_volume(const char *VolumeName)
161 vol.vol_name = bstrdup(VolumeName);
162 fvol = (VOLRES *)vol_list->binary_search(&vol, my_compare);
169 * Free a Volume from the Volume list
171 * Returns: true if the Volume found and removed from the list
172 * false if the Volume is not in the list
174 bool free_volume(DEVICE *dev)
179 if (dev->VolHdr.VolumeName[0] == 0) {
181 * Our device has no VolumeName listed, but
182 * search the list for any Volume attached to
183 * this device and remove it.
185 foreach_dlist(fvol, vol_list) {
186 if (fvol && fvol->dev == dev) {
187 vol_list->remove(fvol);
188 if (fvol->vol_name) {
189 free(fvol->vol_name);
197 Dmsg1(400, "free_volume %s\n", dev->VolHdr.VolumeName);
198 vol.vol_name = bstrdup(dev->VolHdr.VolumeName);
199 fvol = (VOLRES *)vol_list->binary_search(&vol, my_compare);
201 vol_list->remove(fvol);
202 free(fvol->vol_name);
206 dev->VolHdr.VolumeName[0] = 0;
212 /* Free volume reserved by this dcr but not attached to a dev */
213 void free_unused_volume(DCR *dcr)
217 for (vol=(VOLRES *)vol_list->first(); vol; vol=(VOLRES *)vol_list->next(vol)) {
218 if (vol->dcr == dcr && (vol->dev == NULL ||
219 strcmp(vol->vol_name, vol->dev->VolHdr.VolumeName) != 0)) {
220 vol_list->remove(vol);
230 * List Volumes -- this should be moved to status.c
232 void list_volumes(BSOCK *user)
235 for (vol=(VOLRES *)vol_list->first(); vol; vol=(VOLRES *)vol_list->next(vol)) {
237 bnet_fsend(user, "%s on device %s\n", vol->vol_name, vol->dev->print_name());
239 bnet_fsend(user, "%s\n", vol->vol_name);
244 /* Create the Volume list */
245 void create_volume_list()
247 VOLRES *dummy = NULL;
248 if (vol_list == NULL) {
249 vol_list = New(dlist(dummy, &dummy->link));
253 /* Release all Volumes from the list */
254 void free_volume_list()
260 for (vol=(VOLRES *)vol_list->first(); vol; vol=(VOLRES *)vol_list->next(vol)) {
261 Dmsg3(000, "Unreleased Volume=%s dcr=0x%x dev=0x%x\n", vol->vol_name,
268 bool is_volume_in_use(DCR *dcr)
270 VOLRES *vol = find_volume(dcr->VolumeName);
272 return false; /* vol not in list */
274 if (!vol->dev) { /* vol not attached to device */
277 if (dcr->dev == vol->dev) { /* same device OK */
280 if (!vol->dev->is_busy()) {
287 static bool use_storage_cmd(JCR *jcr)
289 POOL_MEM store_name, dev_name, media_type, pool_name, pool_type;
290 BSOCK *dir = jcr->dir_bsock;
300 memset(&rctx, 0, sizeof(RCTX));
303 * If there are multiple devices, the director sends us
304 * use_device for each device that it wants to use.
306 jcr->dirstore = New(alist(10, not_owned_by_alist));
308 Dmsg1(100, "<dird: %s", dir->msg);
309 ok = sscanf(dir->msg, use_storage, store_name.c_str(),
310 media_type.c_str(), pool_name.c_str(),
311 pool_type.c_str(), &append, &Copy, &Stripe) == 7;
315 unbash_spaces(store_name);
316 unbash_spaces(media_type);
317 unbash_spaces(pool_name);
318 unbash_spaces(pool_type);
319 store = new DIRSTORE;
320 jcr->dirstore->append(store);
321 memset(store, 0, sizeof(DIRSTORE));
322 store->device = New(alist(10));
323 bstrncpy(store->name, store_name, sizeof(store->name));
324 bstrncpy(store->media_type, media_type, sizeof(store->media_type));
325 bstrncpy(store->pool_name, pool_name, sizeof(store->pool_name));
326 bstrncpy(store->pool_type, pool_type, sizeof(store->pool_type));
327 store->append = append;
329 /* Now get all devices */
330 while (bnet_recv(dir) >= 0) {
331 Dmsg1(100, "<dird device: %s", dir->msg);
332 ok = sscanf(dir->msg, use_device, dev_name.c_str()) == 1;
336 unbash_spaces(dev_name);
337 store->device->append(bstrdup(dev_name.c_str()));
339 } while (ok && bnet_recv(dir) >= 0);
342 /* This loop is debug code and can be removed */
343 /* ***FIXME**** remove after 1.38 release */
345 foreach_alist(store, jcr->dirstore) {
346 Dmsg4(100, "Storage=%s media_type=%s pool=%s pool_type=%s\n",
347 store->name, store->media_type, store->pool_name,
349 foreach_alist(device_name, store->device) {
350 Dmsg1(100, " Device=%s\n", device_name);
356 * At this point, we have a list of all the Director's Storage
357 * resources indicated for this Job, which include Pool, PoolType,
358 * storage name, and Media type.
359 * Then for each of the Storage resources, we have a list of
360 * device names that were given.
362 * Wiffle through them and find one that can do the backup.
367 * First look for an exact match of Volume name as the
368 * tape may already be mounted.
370 rctx.do_not_wait = true;
371 rctx.exact_match = true;
372 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
375 rctx.exact_match = false;
377 /* Now search if an unused autochanger slot is available */
378 rctx.available_autochanger = true;
379 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
382 rctx.available_autochanger = false;
386 * Make up to two passes. The first with PreferMountedVols possibly
387 * set to true. In that case, we look only for an available
388 * drive with something mounted. If that fails, then we
389 * do a second pass with PerferMountedVols set false.
391 rctx.PreferMountedVols = jcr->PreferMountedVols;
392 if (!rctx.PreferMountedVols) {
393 rctx.do_not_wait = false;
395 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
398 if (rctx.PreferMountedVols) {
399 rctx.PreferMountedVols = false;
400 rctx.do_not_wait = false;
401 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
405 #else /* NEW SEARCH ALGORITHM */
406 rctx.do_not_wait = true;
407 if (!jcr->PreferMountedVols) {
408 /* Look for unused drives in autochangers */
409 rctx.PreferMountedVols = false;
410 rctx.exact_match = false;
411 rctx.available_autochanger = true;
412 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
415 /* Look through all drives */
416 rctx.available_autochanger = false;
417 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
421 /* Look for an exact match all drives */
422 rctx.PreferMountedVols = true;
423 rctx.exact_match = true;
424 rctx.available_autochanger = false;
425 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
428 /* Wait for any drive anywhere */
429 rctx.exact_match = false;
430 rctx.do_not_wait = false;
431 if ((ok = find_suitable_device_for_job(jcr, rctx))) {
436 unbash_spaces(dir->msg);
437 pm_strcpy(jcr->errmsg, dir->msg);
438 Jmsg(jcr, M_INFO, 0, _("Failed command: %s\n"), jcr->errmsg);
440 Jmsg(jcr, M_FATAL, 0, _("\n"
441 " Device \"%s\" with MediaType \"%s\" requested by DIR not found in SD Device resources.\n"),
442 dev_name.c_str(), media_type.c_str());
443 bnet_fsend(dir, NO_device, dev_name.c_str());
445 for (error=(char*)rctx->errors.first(); error;
446 error=(char*)rctx->errors.next()) {
447 Jmsg(jcr, M_INFO, 0, "%s", error);
450 Dmsg1(100, ">dird: %s", dir->msg);
452 unbash_spaces(dir->msg);
453 pm_strcpy(jcr->errmsg, dir->msg);
455 Jmsg(jcr, M_INFO, 0, _("Failed command: %s\n"), jcr->errmsg);
457 bnet_fsend(dir, BAD_use, jcr->errmsg);
458 Dmsg1(100, ">dird: %s", dir->msg);
462 foreach_alist(store, jcr->dirstore) {
463 delete store->device;
466 delete jcr->dirstore;
468 for (error=(char*)rctx->errors.first(); error;
469 error=(char*)rctx->errors.next()) {
478 * Search for a device suitable for this job.
480 bool find_suitable_device_for_job(JCR *jcr, RCTX &rctx)
487 Dmsg4(100, "PrefMnt=%d exact=%d no_wait=%d availchgr=%d\n",
488 rctx.PreferMountedVols, rctx.exact_match, rctx.do_not_wait,
489 rctx.available_autochanger);
490 init_jcr_device_wait_timers(jcr);
492 int can_wait = false;
495 foreach_alist(store, jcr->dirstore) {
497 foreach_alist(device_name, store->device) {
499 rctx.device_name = device_name;
500 stat = search_res_for_device(rctx);
501 if (stat == 1) { /* found available device */
504 } else if (stat == 0) { /* device busy */
507 /* otherwise error */
508 // rctx->errors.push(bstrdup(jcr->errmsg));
516 * We did not find a suitable device, so
517 * if there is some device for which we can wait, then
518 * wait and try again until the wait time expires
520 if (rctx.do_not_wait || !can_wait || !wait_for_device(jcr, first)) {
523 first = false; /* first wait complete */
526 for (error=(char*)rctx->errors.first(); error;
527 error=(char*)rctx->errors.next()) {
536 * Search for a particular storage device with particular storage
537 * characteristics (MediaType).
539 static int search_res_for_device(RCTX &rctx)
541 AUTOCHANGER *changer;
542 BSOCK *dir = rctx.jcr->dir_bsock;
546 Dmsg1(100, "Search res for %s\n", rctx.device_name);
547 if (!rctx.available_autochanger) {
548 foreach_res(rctx.device, R_DEVICE) {
549 Dmsg1(100, "Try res=%s\n", rctx.device->hdr.name);
550 /* Find resource, and make sure we were able to open it */
551 if (fnmatch(rctx.device_name, rctx.device->hdr.name, 0) == 0) {
552 stat = reserve_device(rctx);
556 Dmsg1(220, "Got: %s", dir->msg);
557 bash_spaces(rctx.device_name);
558 ok = bnet_fsend(dir, OK_device, rctx.device_name);
559 Dmsg1(100, ">dird dev: %s", dir->msg);
564 foreach_res(changer, R_AUTOCHANGER) {
565 Dmsg1(100, "Try changer res=%s\n", changer->hdr.name);
566 /* Find resource, and make sure we were able to open it */
567 if (fnmatch(rctx.device_name, changer->hdr.name, 0) == 0) {
568 /* Try each device in this AutoChanger */
569 foreach_alist(rctx.device, changer->device) {
570 Dmsg1(100, "Try changer device %s\n", rctx.device->hdr.name);
571 stat = reserve_device(rctx);
572 if (stat != 1) { /* try another device */
576 if (rctx.store->append == SD_APPEND) {
577 Dmsg2(100, "Device %s reserved=%d.\n", rctx.device_name,
578 rctx.jcr->dcr->dev->reserved_device);
580 Dmsg2(100, "Device %s reserved=%d.\n", rctx.device_name,
581 rctx.jcr->read_dcr->dev->reserved_device);
583 pm_strcpy(dev_name, rctx.device->hdr.name);
584 bash_spaces(dev_name);
585 ok = bnet_fsend(dir, OK_device, dev_name.c_str()); /* Return real device name */
586 Dmsg1(100, ">dird changer: %s", dir->msg);
591 return 0; /* nothing found */
595 * Try to reserve a specific device.
597 * Returns: 1 -- OK, have DCR
601 static int reserve_device(RCTX &rctx)
605 const int name_len = MAX_NAME_LENGTH;
607 /* Make sure MediaType is OK */
608 if (strcmp(rctx.device->media_type, rctx.store->media_type) != 0) {
612 if (!rctx.device->dev) {
613 rctx.device->dev = init_dev(rctx.jcr, rctx.device);
615 if (!rctx.device->dev) {
616 if (rctx.device->changer_res) {
617 Jmsg(rctx.jcr, M_WARNING, 0, _("\n"
618 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
619 rctx.device->hdr.name, rctx.device_name);
621 Jmsg(rctx.jcr, M_WARNING, 0, _("\n"
622 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
625 return -1; /* no use waiting */
627 Dmsg2(100, "Try reserve %s jobid=%d\n", rctx.device->hdr.name,
629 dcr = new_dcr(rctx.jcr, rctx.device->dev);
631 BSOCK *dir = rctx.jcr->dir_bsock;
632 bnet_fsend(dir, _("3926 Could not get dcr for device: %s\n"), rctx.device_name);
633 Dmsg1(100, ">dird: %s", dir->msg);
636 bstrncpy(dcr->pool_name, rctx.store->pool_name, name_len);
637 bstrncpy(dcr->pool_type, rctx.store->pool_type, name_len);
638 bstrncpy(dcr->media_type, rctx.store->media_type, name_len);
639 bstrncpy(dcr->dev_name, rctx.device_name, name_len);
640 if (rctx.store->append == SD_APPEND) {
641 if (rctx.exact_match && !rctx.have_volume) {
642 dcr->any_volume = true;
643 if (dir_find_next_appendable_volume(dcr)) {
644 Dmsg1(100, "Looking for Volume=%s\n", dcr->VolumeName);
645 bstrncpy(rctx.VolumeName, dcr->VolumeName, sizeof(rctx.VolumeName));
646 rctx.have_volume = true;
648 Dmsg0(100, "No next volume found\n");
649 rctx.VolumeName[0] = 0;
652 ok = reserve_device_for_append(dcr, rctx);
655 Dmsg5(100, "Reserved=%d dev_name=%s mediatype=%s pool=%s ok=%d\n",
656 dcr->dev->reserved_device,
657 dcr->dev_name, dcr->media_type, dcr->pool_name, ok);
660 ok = reserve_device_for_read(dcr);
662 rctx.jcr->read_dcr = dcr;
663 Dmsg5(100, "Read reserved=%d dev_name=%s mediatype=%s pool=%s ok=%d\n",
664 dcr->dev->reserved_device,
665 dcr->dev_name, dcr->media_type, dcr->pool_name, ok);
670 Dmsg0(100, "Not OK.\n");
677 * We "reserve" the drive by setting the ST_READ bit. No one else
678 * should touch the drive until that is cleared.
679 * This allows the DIR to "reserve" the device before actually
682 static bool reserve_device_for_read(DCR *dcr)
684 DEVICE *dev = dcr->dev;
692 if (is_device_unmounted(dev)) {
693 Dmsg1(200, "Device %s is BLOCKED due to user unmount.\n", dev->print_name());
694 Mmsg(jcr->errmsg, _("Device %s is BLOCKED due to user unmount.\n"),
699 if (dev->is_busy()) {
700 Dmsg4(200, "Device %s is busy ST_READ=%d num_writers=%d reserved=%d.\n", dev->print_name(),
701 dev->state & ST_READ?1:0, dev->num_writers, dev->reserved_device);
702 Mmsg1(jcr->errmsg, _("Device %s is busy.\n"),
718 * We reserve the device for appending by incrementing the
719 * reserved_device. We do virtually all the same work that
720 * is done in acquire_device_for_append(), but we do
721 * not attempt to mount the device. This routine allows
722 * the DIR to reserve multiple devices before *really*
723 * starting the job. It also permits the SD to refuse
724 * certain devices (not up, ...).
726 * Note, in reserving a device, if the device is for the
727 * same pool and the same pool type, then it is acceptable.
728 * The Media Type has already been checked. If we are
729 * the first tor reserve the device, we put the pool
730 * name and pool type in the device record.
732 static bool reserve_device_for_append(DCR *dcr, RCTX &rctx)
735 DEVICE *dev = dcr->dev;
742 if (dev->can_read()) {
743 Mmsg1(jcr->errmsg, _("Device %s is busy reading.\n"), dev->print_name());
744 Dmsg1(100, "%s", jcr->errmsg);
748 if (is_device_unmounted(dev)) {
749 Mmsg(jcr->errmsg, _("Device %s is BLOCKED due to user unmount.\n"), dev->print_name());
750 Dmsg1(100, "%s", jcr->errmsg);
754 Dmsg1(100, "reserve_append device is %s\n", dev->is_tape()?"tape":"disk");
756 if (can_reserve_drive(dcr, rctx) != 1) {
757 Dmsg0(100, "can_reserve_drive!=1\n");
761 dev->reserved_device++;
762 Dmsg3(100, "Inc reserve=%d dev=%s %p\n", dev->reserved_device,
763 dev->print_name(), dev);
764 dcr->reserved_device = true;
773 * Returns: 1 if drive can be reserved
774 * 0 if we should wait
777 static int can_reserve_drive(DCR *dcr, RCTX &rctx)
779 DEVICE *dev = dcr->dev;
782 /* If he wants a free drive, but this one is busy, no go */
783 if (!rctx.PreferMountedVols && dev->is_busy()) {
784 Dmsg1(100, "!prefMnt && busy. JobId=%d\n", jcr->JobId);
787 Dmsg3(100, "prefmnt=%d busy=%d res=%d\n", rctx.PreferMountedVols,
788 dev->is_busy(), dev->reserved_device);
790 /* Check for prefer mounted volumes */
791 if (rctx.PreferMountedVols && !dev->VolHdr.VolumeName[0] && dev->is_tape()) {
792 Dmsg1(100, "want mounted -- no vol JobId=%d\n", jcr->JobId);
793 return 0; /* No volume mounted */
796 /* Check for exact Volume name match */
797 if (rctx.exact_match && rctx.have_volume &&
798 strcmp(dev->VolHdr.VolumeName, rctx.VolumeName) != 0) {
799 Dmsg2(100, "Not exact match have=%s want=%s\n",
800 dev->VolHdr.VolumeName, rctx.VolumeName);
804 /* Check for unused autochanger drive */
805 if (rctx.available_autochanger && dev->num_writers == 0 &&
806 dev->VolHdr.VolumeName[0] == 0) {
807 /* Device is available but not yet reserved, reserve it for us */
808 Dmsg2(100, "Res Unused autochanger %s JobId=%d.\n",
809 dev->print_name(), jcr->JobId);
810 bstrncpy(dev->pool_name, dcr->pool_name, sizeof(dev->pool_name));
811 bstrncpy(dev->pool_type, dcr->pool_type, sizeof(dev->pool_type));
812 return 1; /* reserve drive */
816 * Handle the case that there are no writers
818 if (dev->num_writers == 0) {
819 /* Now check if there are any reservations on the drive */
820 if (dev->reserved_device) {
821 /* Now check if we want the same Pool and pool type */
822 if (strcmp(dev->pool_name, dcr->pool_name) == 0 &&
823 strcmp(dev->pool_type, dcr->pool_type) == 0) {
824 /* OK, compatible device */
825 Dmsg2(100, "got dev: %s num_writers=0, reserved, pool matches JobId=%d\n",
826 dev->print_name(), jcr->JobId);
829 /* Drive not suitable for us */
830 Dmsg2(100, "busy: num_writers=0, reserved, pool=%s wanted=%s\n",
831 dev->pool_name, dcr->pool_name);
834 } else if (dev->can_append()) {
835 /* Device in append mode, check if changing pool */
836 if (strcmp(dev->pool_name, dcr->pool_name) == 0 &&
837 strcmp(dev->pool_type, dcr->pool_type) == 0) {
838 Dmsg2(100, "got dev: %s num_writers=0, can_append, pool matches. JobId=%d\n",
839 dev->print_name(), jcr->JobId);
840 /* OK, compatible device */
843 /* Changing pool, unload old tape if any in drive */
844 Dmsg0(100, "got dev: num_writers=0, not reserved, pool change, unload changer\n");
845 unload_autochanger(dcr, 0);
848 /* Device is available but not yet reserved, reserve it for us */
849 Dmsg2(100, "Dev avail reserved %s JobId=%d\n", dev->print_name(),
851 bstrncpy(dev->pool_name, dcr->pool_name, sizeof(dev->pool_name));
852 bstrncpy(dev->pool_type, dcr->pool_type, sizeof(dev->pool_type));
853 return 1; /* reserve drive */
857 * Check if the device is in append mode with writers (i.e.
858 * available if pool is the same).
860 if (dev->can_append() || dev->num_writers > 0) {
861 /* Yes, now check if we want the same Pool and pool type */
862 if (strcmp(dev->pool_name, dcr->pool_name) == 0 &&
863 strcmp(dev->pool_type, dcr->pool_type) == 0) {
864 Dmsg2(100, "got dev: %s num_writers>=0, can_append, pool matches. JobId=%d\n",
865 dev->print_name(), jcr->JobId);
866 /* OK, compatible device */
869 /* Drive not suitable for us */
870 Dmsg2(100, "busy: num_writers>0, can_append, pool=%s wanted=%s\n",
871 dev->pool_name, dcr->pool_name);
875 Pmsg0(000, _("Logic error!!!! Should not get here.\n"));
876 Jmsg0(jcr, M_FATAL, 0, _("Logic error!!!! Should not get here.\n"));
877 return -1; /* error, should not get here */
879 Dmsg2(100, "No reserve %s JobId=%d\n", dev->print_name(), jcr->JobId);