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 int slot = jcr->VolCatInfo.Slot;
130 * Handle autoloaders here. If we cannot autoload it, we
131 * will fall through to ask the sysop.
133 if (dev->capabilities && CAP_AUTOCHANGER && slot <= 0) {
134 if (dir_find_next_appendable_volume(jcr)) {
135 slot = jcr->VolCatInfo.Slot;
138 Dmsg1(100, "Want changer slot=%d\n", slot);
140 if (slot > 0 && jcr->device->changer_name && jcr->device->changer_command) {
141 uint32_t timeout = jcr->device->max_changer_wait;
142 POOLMEM *changer, *results;
145 results = get_pool_memory(PM_MESSAGE);
146 changer = get_pool_memory(PM_FNAME);
147 /* Find out what is loaded */
148 changer = edit_device_codes(jcr, changer, jcr->device->changer_command,
150 status = run_program(changer, timeout, results);
152 loaded = atoi(results);
154 loaded = -1; /* force unload */
156 Dmsg1(100, "loaded=%s\n", results);
158 /* If bad status or tape we want is not loaded, load it. */
159 if (status != 0 || loaded != slot) {
160 if (dev->capabilities & CAP_OFFLINEUNMOUNT) {
163 /* We are going to load a new tape, so close the device */
164 force_close_dev(dev);
165 if (loaded != 0) { /* must unload drive */
166 Dmsg0(100, "Doing changer unload.\n");
167 Jmsg(jcr, M_INFO, 0, _("Issuing autochanger \"unload\" command.\n"));
168 changer = edit_device_codes(jcr, changer,
169 jcr->device->changer_command, "unload");
170 status = run_program(changer, timeout, NULL);
171 Dmsg1(100, "unload status=%d\n", status);
174 * Load the desired cassette
176 Dmsg1(100, "Doing changer load slot %d\n", slot);
177 Jmsg(jcr, M_INFO, 0, _("Issuing autochanger \"load slot %d\" command.\n"),
179 changer = edit_device_codes(jcr, changer,
180 jcr->device->changer_command, "load");
181 status = run_program(changer, timeout, NULL);
182 Dmsg2(100, "load slot %d status=%d\n", slot, status);
184 free_pool_memory(changer);
185 free_pool_memory(results);
186 Dmsg1(100, "After changer, status=%d\n", status);
187 if (status == 0) { /* did we succeed? */
188 ask = 0; /* yes, got vol, no need to ask sysop */
189 autochanger = 1; /* tape loaded by changer */
194 if (ask && !dir_ask_sysop_to_mount_next_volume(jcr, dev)) {
195 return 0; /* error return */
197 Dmsg1(200, "want vol=%s\n", jcr->VolumeName);
200 for ( ; !(dev->state & ST_OPENED); ) {
201 if (open_dev(dev, jcr->VolCatInfo.VolCatName, READ_WRITE) < 0) {
202 if (dev->dev_errno == EAGAIN || dev->dev_errno == EBUSY) {
205 Jmsg2(jcr, M_FATAL, 0, _("Unable to open device %s. ERR=%s\n"),
206 dev_name(dev), strerror_dev(dev));
212 * Now make sure we have the right tape mounted
215 switch (read_dev_volume_label(jcr, dev, block)) {
217 Dmsg1(500, "Vol OK name=%s\n", jcr->VolumeName);
218 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
219 if (strcmp(dev->VolCatInfo.VolCatStatus, "Recycle") == 0) {
224 Dmsg1(500, "Vol NAME Error Name=%s\n", jcr->VolumeName);
225 /* Check if we can accept this as an anonymous volume */
226 strcpy(jcr->VolumeName, dev->VolHdr.VolName);
227 if (!dev->capabilities & CAP_ANONVOLS || !dir_get_volume_info(jcr)) {
230 Dmsg1(200, "want new name=%s\n", jcr->VolumeName);
231 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
236 Dmsg1(500, "Vol NO_LABEL or IO_ERROR name=%s\n", jcr->VolumeName);
237 /* If permitted, create a label */
238 if (dev->capabilities & CAP_LABEL) {
239 Dmsg0(190, "Create volume label\n");
240 if (!write_volume_label_to_dev(jcr, (DEVRES *)dev->device, jcr->VolumeName,
244 Jmsg(jcr, M_INFO, 0, _("Created Volume label %s on device %s.\n"),
245 jcr->VolumeName, dev_name(dev));
246 goto read_volume; /* read label we just wrote */
248 /* NOTE! Fall-through wanted. */
250 /* Send error message */
251 Jmsg(jcr, M_WARNING, 0, "%s", jcr->errmsg);
253 Jmsg(jcr, M_ERROR, 0, _("Autochanger Volume %s not found in slot %d.\n\
254 Setting slot to zero in catalog.\n"),
255 jcr->VolumeName, jcr->VolCatInfo.Slot);
256 jcr->VolCatInfo.Slot = 0; /* invalidate slot */
257 dir_update_volume_info(jcr, &jcr->VolCatInfo, 1); /* set slot */
265 * See if we have a fresh tape or tape with data.
267 * Note, if the LabelType is PRE_LABEL, it was labeled
268 * but never written. If so, rewrite the label but set as
269 * VOL_LABEL. We rewind and return the label (reconstructed)
270 * in the block so that in the case of a new tape, data can
271 * be appended just after the block label. If we are writing
272 * an second volume, the calling routine will write the label
273 * before writing the overflow block.
275 * If the tape is marked as Recycle, we rewrite the label.
277 if (dev->VolHdr.LabelType == PRE_LABEL || recycle) {
278 Dmsg1(190, "ready_for_append found freshly labeled volume. dev=%x\n", dev);
279 dev->VolHdr.LabelType = VOL_LABEL; /* set Volume label */
280 write_volume_label_to_block(jcr, dev, block);
282 * Write the block now to ensure we have write permission.
283 * It is better to find out now rather than later.
285 dev->VolCatInfo.VolCatBytes = 0;
286 if (!rewind_dev(dev)) {
287 Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
288 dev_name(dev), strerror_dev(dev));
291 if (!truncate_dev(dev)) {
292 Jmsg2(jcr, M_WARNING, 0, _("Truncate error on device %s. ERR=%s\n"),
293 dev_name(dev), strerror_dev(dev));
296 if (!write_block_to_dev(dev, block)) {
297 Jmsg2(jcr, M_ERROR, 0, _("Unable to write device %s. ERR=%s\n"),
298 dev_name(dev), strerror_dev(dev));
301 if (!rewind_dev(dev)) {
302 Jmsg2(jcr, M_ERROR, 0, _("Unable to rewind device %s. ERR=%s\n"),
303 dev_name(dev), strerror_dev(dev));
306 /* Recreate a correct volume label and return it in the block */
307 write_volume_label_to_block(jcr, dev, block);
308 dev->VolCatInfo.VolCatJobs = 1;
309 dev->VolCatInfo.VolCatFiles = 1;
310 dev->VolCatInfo.VolCatErrors = 0;
311 dev->VolCatInfo.VolCatBlocks = 1;
313 dev->VolCatInfo.VolCatMounts++;
314 dev->VolCatInfo.VolCatRecycles++;
316 dev->VolCatInfo.VolCatMounts = 1;
317 dev->VolCatInfo.VolCatRecycles = 0;
318 dev->VolCatInfo.VolCatWrites = 1;
319 dev->VolCatInfo.VolCatReads = 1;
321 strcpy(dev->VolCatInfo.VolCatStatus, "Append");
322 Dmsg0(100, "dir_update_vol_info. Set Append\n");
323 dir_update_volume_info(jcr, &dev->VolCatInfo, 1); /* indicate doing relabel */
325 Jmsg(jcr, M_INFO, 0, _("Recycled volume %s on device %s, all previous data lost.\n"),
326 jcr->VolumeName, dev_name(dev));
328 Jmsg(jcr, M_INFO, 0, _("Wrote label to prelabeled Volume %s on device %s\n"),
329 jcr->VolumeName, dev_name(dev));
334 * OK, at this point, we have a valid Bacula label, but
335 * we need to position to the end of the volume, since we are
336 * just now putting it into append mode.
338 Dmsg0(200, "Device previously written, moving to end of data\n");
339 Jmsg(jcr, M_INFO, 0, _("Volume %s previously written, moving to end of data.\n"),
342 Jmsg(jcr, M_ERROR, 0, _("Unable to position to end of data %s. ERR=%s\n"),
343 dev_name(dev), strerror_dev(dev));
344 Jmsg(jcr, M_INFO, 0, _("Marking Volume %s in Error in Catalog.\n"),
346 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
347 Dmsg0(100, "dir_update_vol_info. Set Error.\n");
348 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
351 /* *****FIXME**** we should do some checking for files too */
352 if (dev_is_tape(dev)) {
353 Jmsg(jcr, M_INFO, 0, _("Ready to append to end of Volume at file=%d.\n"), dev_file(dev));
355 * Check if we are positioned on the tape at the same place
356 * that the database says we should be.
358 if (dev->VolCatInfo.VolCatFiles != dev_file(dev) + 1) {
359 /* ****FIXME**** this should refuse to write on tape */
360 Jmsg(jcr, M_ERROR, 0, _("Hey! Num files mismatch! Volume=%d Catalog=%d\n"),
361 dev_file(dev)+1, dev->VolCatInfo.VolCatFiles);
364 /* Update Volume Info -- will be written at end of Job */
365 dev->VolCatInfo.VolCatMounts++; /* Update mounts */
366 dev->VolCatInfo.VolCatJobs++;
367 /* Return an empty block */
368 empty_block(block); /* we used it for reading so set for write */
370 dev->state |= ST_APPEND;
371 Dmsg0(100, "Normal return from read_dev_for_append\n");
376 int mount_next_read_volume(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
378 Dmsg2(90, "NumVolumes=%d CurVolume=%d\n", jcr->NumVolumes, jcr->CurVolume);
380 * End Of Tape -- mount next Volume (if another specified)
382 if (jcr->NumVolumes > 1 && jcr->CurVolume < jcr->NumVolumes) {
383 VOL_LIST *vol = jcr->VolList;
384 /* Find next Volume */
386 for (int i=1; i<jcr->CurVolume; i++) {
389 pm_strcpy(&jcr->VolumeName, vol->VolumeName);
390 Dmsg1(400, "There is another volume %s.\n", jcr->VolumeName);
393 dev->state &= ~ST_READ;
394 if (!acquire_device_for_read(jcr, dev, block)) {
395 Emsg2(M_FATAL, 0, "Cannot open Dev=%s, Vol=%s\n", dev_name(dev),
399 return 1; /* next volume mounted */
401 Dmsg0(90, "End of Device reached.\n");
407 * Edit codes into ChangerCommand
409 * %a = archive device name
410 * %c = changer device name
419 * omsg = edited output message
420 * imsg = input string containing edit codes (%x)
421 * cmd = command string (load, unload, ...)
424 static char *edit_device_codes(JCR *jcr, char *omsg, char *imsg, char *cmd)
431 Dmsg1(200, "edit_device_codes: %s\n", imsg);
432 for (p=imsg; *p; p++) {
439 str = jcr->device->dev->dev_name;
442 str = NPRT(jcr->device->changer_name);
448 sprintf(add, "%d", jcr->VolCatInfo.Slot - 1);
452 sprintf(add, "%d", jcr->VolCatInfo.Slot);
455 case 'j': /* Job name */
459 str = NPRT(jcr->VolumeName);
462 str = NPRT(jcr->client_name);
477 Dmsg1(200, "add_str %s\n", str);
478 pm_strcat(&omsg, (char *)str);
479 Dmsg1(200, "omsg=%s\n", omsg);