3 * Routines for handling mounting tapes for reading and for
6 * Kern Sibbald, August MMII
11 Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
13 This program is free software; you can redistribute it and/or
14 modify it under the terms of the GNU General Public License as
15 published by the Free Software Foundation; either version 2 of
16 the License, or (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 General Public License for more details.
23 You should have received a copy of the GNU General Public
24 License along with this program; if not, write to the Free
25 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 #include "bacula.h" /* pull in global headers */
31 #include "stored.h" /* pull in Storage Deamon headers */
33 /* Forward referenced functions */
34 static char *edit_device_codes(JCR *jcr, char *omsg, char *imsg, char *cmd);
38 * If release is set, we rewind the current volume,
39 * which we no longer want, and ask the user (console)
40 * to mount the next volume.
42 * Continue trying until we get it, and then ensure
43 * that we can write on it.
45 * This routine returns a 0 only if it is REALLY
46 * impossible to get the requested Volume.
48 int mount_next_write_volume(JCR *jcr, DEVICE *dev, DEV_BLOCK *block, int release)
50 int recycle, ask, retry = 0, autochanger;
52 Dmsg0(190, "Enter mount_next_volume()\n");
56 Jmsg(jcr, M_FATAL, 0, _("Too many errors on device %s.\n"), dev_name(dev));
59 if (job_cancelled(jcr)) {
60 Jmsg(jcr, M_FATAL, 0, _("Job cancelled.\n"));
63 recycle = ask = autochanger = 0;
65 Dmsg0(500, "mount_next_volume release=1\n");
67 * First erase all memory of the current volume
71 dev->LastBlockNumWritten = 0;
72 memset(&dev->VolCatInfo, 0, sizeof(dev->VolCatInfo));
73 memset(&dev->VolHdr, 0, sizeof(dev->VolHdr));
74 dev->state &= ~ST_LABEL; /* label not yet read */
75 jcr->VolumeName[0] = 0;
77 if (!dev_is_tape(dev) || !(dev->capabilities & CAP_ALWAYSOPEN)) {
78 if (dev->capabilities & CAP_OFFLINEUNMOUNT) {
84 /* If we have not closed the device, then at least rewind the tape */
85 if (dev->state & ST_OPENED) {
86 if (dev->capabilities & CAP_OFFLINEUNMOUNT) {
89 if (!rewind_dev(dev)) {
90 Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
91 dev_name(dev), strerror_dev(dev));
94 ask = 1; /* ask operator to mount tape */
98 * Get Director's idea of what tape we should have mounted.
100 if (!dir_find_next_appendable_volume(jcr)) {
101 ask = 1; /* we must ask */
103 Dmsg2(100, "After find_next_append. Vol=%s Slot=%d\n",
104 jcr->VolCatInfo.VolCatName, jcr->VolCatInfo.Slot);
105 release = 1; /* release if we "recurse" */
108 * Get next volume and ready it for append
109 * This code ensures that the device is ready for
110 * writing. We start from the assumption that there
111 * may not be a tape mounted.
113 * If the device is a file, we create the output
114 * file. If it is a tape, we check the volume name
115 * and move the tape to the end of data.
117 * It assumes that the device is not already in use!
121 Dmsg0(100, "Enter ready_dev_for_append\n");
123 dev->state &= ~(ST_APPEND|ST_READ|ST_EOT|ST_WEOT|ST_EOF);
125 jcr->VolFirstFile = jcr->JobFiles; /* first update of Vol FileIndex */
127 autochanger = autoload_device(jcr, dev, 1);
129 ask = 0; /* if autochange no need to ask sysop */
132 if (ask && !dir_ask_sysop_to_mount_next_volume(jcr, dev)) {
133 return 0; /* error return */
135 Dmsg1(200, "want vol=%s\n", jcr->VolumeName);
138 for ( ; !(dev->state & ST_OPENED); ) {
139 if (open_dev(dev, jcr->VolCatInfo.VolCatName, READ_WRITE) < 0) {
140 if (dev->dev_errno == EAGAIN || dev->dev_errno == EBUSY) {
143 Jmsg2(jcr, M_FATAL, 0, _("Unable to open device %s. ERR=%s\n"),
144 dev_name(dev), strerror_dev(dev));
150 * Now make sure we have the right tape mounted
153 switch (read_dev_volume_label(jcr, dev, block)) {
155 Dmsg1(500, "Vol OK name=%s\n", jcr->VolumeName);
156 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
157 if (strcmp(dev->VolCatInfo.VolCatStatus, "Recycle") == 0) {
162 Dmsg1(500, "Vol NAME Error Name=%s\n", jcr->VolumeName);
163 /* Check if we can accept this as an anonymous volume */
164 strcpy(jcr->VolumeName, dev->VolHdr.VolName);
165 if (!dev->capabilities & CAP_ANONVOLS || !dir_get_volume_info(jcr, 1)) {
168 Dmsg1(200, "want new name=%s\n", jcr->VolumeName);
169 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
174 Dmsg1(500, "Vol NO_LABEL or IO_ERROR name=%s\n", jcr->VolumeName);
175 /* If permitted, create a label */
176 if (dev->capabilities & CAP_LABEL) {
177 Dmsg0(190, "Create volume label\n");
178 if (!write_volume_label_to_dev(jcr, (DEVRES *)dev->device, jcr->VolumeName,
182 Jmsg(jcr, M_INFO, 0, _("Created Volume label %s on device %s.\n"),
183 jcr->VolumeName, dev_name(dev));
184 goto read_volume; /* read label we just wrote */
186 /* NOTE! Fall-through wanted. */
188 /* Send error message */
189 Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
191 Jmsg(jcr, M_ERROR, 0, _("Autochanger Volume %s not found in slot %d.\n\
192 Setting slot to zero in catalog.\n"),
193 jcr->VolumeName, jcr->VolCatInfo.Slot);
194 jcr->VolCatInfo.Slot = 0; /* invalidate slot */
195 dir_update_volume_info(jcr, &jcr->VolCatInfo, 1); /* set slot */
203 * See if we have a fresh tape or tape with data.
205 * Note, if the LabelType is PRE_LABEL, it was labeled
206 * but never written. If so, rewrite the label but set as
207 * VOL_LABEL. We rewind and return the label (reconstructed)
208 * in the block so that in the case of a new tape, data can
209 * be appended just after the block label. If we are writing
210 * an second volume, the calling routine will write the label
211 * before writing the overflow block.
213 * If the tape is marked as Recycle, we rewrite the label.
215 if (dev->VolHdr.LabelType == PRE_LABEL || recycle) {
216 Dmsg1(190, "ready_for_append found freshly labeled volume. dev=%x\n", dev);
217 dev->VolHdr.LabelType = VOL_LABEL; /* set Volume label */
218 write_volume_label_to_block(jcr, dev, block);
220 * Write the block now to ensure we have write permission.
221 * It is better to find out now rather than later.
223 dev->VolCatInfo.VolCatBytes = 0;
224 if (!rewind_dev(dev)) {
225 Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
226 dev_name(dev), strerror_dev(dev));
229 if (!truncate_dev(dev)) {
230 Jmsg2(jcr, M_WARNING, 0, _("Truncate error on device %s. ERR=%s\n"),
231 dev_name(dev), strerror_dev(dev));
234 if (!write_block_to_dev(dev, block)) {
235 Jmsg2(jcr, M_ERROR, 0, _("Unable to write device %s. ERR=%s\n"),
236 dev_name(dev), strerror_dev(dev));
239 if (!rewind_dev(dev)) {
240 Jmsg2(jcr, M_ERROR, 0, _("Unable to rewind device %s. ERR=%s\n"),
241 dev_name(dev), strerror_dev(dev));
244 /* Recreate a correct volume label and return it in the block */
245 write_volume_label_to_block(jcr, dev, block);
246 dev->VolCatInfo.VolCatJobs = 1;
247 dev->VolCatInfo.VolCatFiles = 1;
248 dev->VolCatInfo.VolCatErrors = 0;
249 dev->VolCatInfo.VolCatBlocks = 1;
251 dev->VolCatInfo.VolCatMounts++;
252 dev->VolCatInfo.VolCatRecycles++;
254 dev->VolCatInfo.VolCatMounts = 1;
255 dev->VolCatInfo.VolCatRecycles = 0;
256 dev->VolCatInfo.VolCatWrites = 1;
257 dev->VolCatInfo.VolCatReads = 1;
259 strcpy(dev->VolCatInfo.VolCatStatus, "Append");
260 Dmsg0(100, "dir_update_vol_info. Set Append\n");
261 dir_update_volume_info(jcr, &dev->VolCatInfo, 1); /* indicate doing relabel */
263 Jmsg(jcr, M_INFO, 0, _("Recycled volume %s on device %s, all previous data lost.\n"),
264 jcr->VolumeName, dev_name(dev));
266 Jmsg(jcr, M_INFO, 0, _("Wrote label to prelabeled Volume %s on device %s\n"),
267 jcr->VolumeName, dev_name(dev));
272 * OK, at this point, we have a valid Bacula label, but
273 * we need to position to the end of the volume, since we are
274 * just now putting it into append mode.
276 Dmsg0(200, "Device previously written, moving to end of data\n");
277 Jmsg(jcr, M_INFO, 0, _("Volume %s previously written, moving to end of data.\n"),
280 Jmsg(jcr, M_ERROR, 0, _("Unable to position to end of data %s. ERR=%s\n"),
281 dev_name(dev), strerror_dev(dev));
282 Jmsg(jcr, M_INFO, 0, _("Marking Volume %s in Error in Catalog.\n"),
284 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
285 Dmsg0(100, "dir_update_vol_info. Set Error.\n");
286 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
289 /* *****FIXME**** we should do some checking for files too */
290 if (dev_is_tape(dev)) {
291 Jmsg(jcr, M_INFO, 0, _("Ready to append to end of Volume at file=%d.\n"), dev_file(dev));
293 * Check if we are positioned on the tape at the same place
294 * that the database says we should be.
296 if (dev->VolCatInfo.VolCatFiles != dev_file(dev) + 1) {
297 /* ****FIXME**** this should refuse to write on tape */
298 Jmsg(jcr, M_ERROR, 0, _("Hey! Num files mismatch! Volume=%d Catalog=%d\n"),
299 dev_file(dev)+1, dev->VolCatInfo.VolCatFiles);
302 /* Update Volume Info -- will be written at end of Job */
303 dev->VolCatInfo.VolCatMounts++; /* Update mounts */
304 dev->VolCatInfo.VolCatJobs++;
305 /* Return an empty block */
306 empty_block(block); /* we used it for reading so set for write */
308 dev->state |= ST_APPEND;
309 Dmsg0(100, "Normal return from read_dev_for_append\n");
314 int mount_next_read_volume(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
316 Dmsg2(90, "NumVolumes=%d CurVolume=%d\n", jcr->NumVolumes, jcr->CurVolume);
318 * End Of Tape -- mount next Volume (if another specified)
320 if (jcr->NumVolumes > 1 && jcr->CurVolume < jcr->NumVolumes) {
321 VOL_LIST *vol = jcr->VolList;
322 /* Find next Volume */
324 for (int i=1; i<jcr->CurVolume; i++) {
327 pm_strcpy(&jcr->VolumeName, vol->VolumeName);
328 Dmsg1(400, "There is another volume %s.\n", jcr->VolumeName);
331 dev->state &= ~ST_READ;
332 if (!acquire_device_for_read(jcr, dev, block)) {
333 Emsg2(M_FATAL, 0, "Cannot open Dev=%s, Vol=%s\n", dev_name(dev),
337 return 1; /* next volume mounted */
339 Dmsg0(90, "End of Device reached.\n");
344 * Called here to do an autoload using the autochanger, if
345 * configured, and if a Slot has been defined for this Volume.
346 * On success this routine loads the indicated tape, but the
347 * label is not read, so it must be verified.
349 * Returns: 1 on success
352 int autoload_device(JCR *jcr, DEVICE *dev, int writing)
354 int slot = jcr->VolCatInfo.Slot;
358 * Handle autoloaders here. If we cannot autoload it, we
359 * will return FALSE to ask the sysop.
361 if (writing && dev->capabilities && CAP_AUTOCHANGER && slot <= 0) {
362 if (dir_find_next_appendable_volume(jcr)) {
363 slot = jcr->VolCatInfo.Slot;
366 Dmsg1(100, "Want changer slot=%d\n", slot);
368 if (slot > 0 && jcr->device->changer_name && jcr->device->changer_command) {
369 uint32_t timeout = jcr->device->max_changer_wait;
370 POOLMEM *changer, *results;
373 results = get_pool_memory(PM_MESSAGE);
374 changer = get_pool_memory(PM_FNAME);
376 /* Find out what is loaded, zero means device is unloaded */
377 changer = edit_device_codes(jcr, changer, jcr->device->changer_command,
379 status = run_program(changer, timeout, results);
381 loaded = atoi(results);
383 loaded = -1; /* force unload */
385 Dmsg1(100, "loaded=%s\n", results);
387 /* If bad status or tape we want is not loaded, load it. */
388 if (status != 0 || loaded != slot) {
389 if (dev->capabilities & CAP_OFFLINEUNMOUNT) {
392 /* We are going to load a new tape, so close the device */
393 force_close_dev(dev);
394 if (loaded != 0) { /* must unload drive */
395 Dmsg0(100, "Doing changer unload.\n");
396 Jmsg(jcr, M_INFO, 0, _("Issuing autochanger \"unload\" command.\n"));
397 changer = edit_device_codes(jcr, changer,
398 jcr->device->changer_command, "unload");
399 status = run_program(changer, timeout, NULL);
400 Dmsg1(100, "unload status=%d\n", status);
403 * Load the desired cassette
405 Dmsg1(100, "Doing changer load slot %d\n", slot);
406 Jmsg(jcr, M_INFO, 0, _("Issuing autochanger \"load slot %d\" command.\n"),
408 changer = edit_device_codes(jcr, changer,
409 jcr->device->changer_command, "load");
410 status = run_program(changer, timeout, NULL);
411 Dmsg2(100, "load slot %d status=%d\n", slot, status);
413 free_pool_memory(changer);
414 free_pool_memory(results);
415 Dmsg1(100, "After changer, status=%d\n", status);
416 if (status == 0) { /* did we succeed? */
417 rtn_stat = 1; /* tape loaded by changer */
426 * Edit codes into ChangerCommand
428 * %a = archive device name
429 * %c = changer device name
438 * omsg = edited output message
439 * imsg = input string containing edit codes (%x)
440 * cmd = command string (load, unload, ...)
443 static char *edit_device_codes(JCR *jcr, char *omsg, char *imsg, char *cmd)
450 Dmsg1(200, "edit_device_codes: %s\n", imsg);
451 for (p=imsg; *p; p++) {
458 str = jcr->device->dev->dev_name;
461 str = NPRT(jcr->device->changer_name);
467 sprintf(add, "%d", jcr->VolCatInfo.Slot - 1);
471 sprintf(add, "%d", jcr->VolCatInfo.Slot);
474 case 'j': /* Job name */
478 str = NPRT(jcr->VolumeName);
481 str = NPRT(jcr->client_name);
496 Dmsg1(200, "add_str %s\n", str);
497 pm_strcat(&omsg, (char *)str);
498 Dmsg1(200, "omsg=%s\n", omsg);