3 * Routines for handling mounting tapes for reading and for
6 * Kern Sibbald, August MMII
11 Copyright (C) 2000-2003 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 */
37 * If release is set, we rewind the current volume,
38 * which we no longer want, and ask the user (console)
39 * to mount the next volume.
41 * Continue trying until we get it, and then ensure
42 * that we can write on it.
44 * This routine returns a 0 only if it is REALLY
45 * impossible to get the requested Volume.
47 int mount_next_write_volume(JCR *jcr, DEVICE *dev, DEV_BLOCK *block, int release)
49 int recycle, ask, retry = 0, autochanger;
51 Dmsg0(100, "Enter mount_next_volume()\n");
55 Jmsg(jcr, M_FATAL, 0, _("Too many errors trying to mount device %s.\n"),
59 if (job_cancelled(jcr)) {
60 Jmsg(jcr, M_FATAL, 0, _("Job cancelled.\n"));
63 recycle = ask = autochanger = 0;
65 Dmsg0(100, "mount_next_volume release=1\n");
67 * First erase all memory of the current volume
69 dev->block_num = dev->file = 0;
70 dev->EndBlock = dev->EndFile = 0;
71 memset(&dev->VolCatInfo, 0, sizeof(dev->VolCatInfo));
72 memset(&jcr->VolCatInfo, 0, sizeof(jcr->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_cap(dev, CAP_ALWAYSOPEN)) {
78 if (dev_cap(dev, 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_cap(dev, 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 */
102 Dmsg0(100, "did not find next volume. Must ask.\n");
104 Dmsg2(100, "After find_next_append. Vol=%s Slot=%d\n",
105 jcr->VolCatInfo.VolCatName, jcr->VolCatInfo.Slot);
106 release = 1; /* release if we "recurse" */
109 * Get next volume and ready it for append
110 * This code ensures that the device is ready for
111 * writing. We start from the assumption that there
112 * may not be a tape mounted.
114 * If the device is a file, we create the output
115 * file. If it is a tape, we check the volume name
116 * and move the tape to the end of data.
118 * It assumes that the device is not already in use!
122 Dmsg0(100, "Enter ready_dev_for_append\n");
124 dev->state &= ~(ST_APPEND|ST_READ|ST_EOT|ST_WEOT|ST_EOF);
126 jcr->VolFirstFile = jcr->JobFiles; /* first update of Vol FileIndex */
128 int vol_label_status;
129 autochanger = autoload_device(jcr, dev, 1, NULL);
131 ask = 0; /* if autochange no need to ask sysop */
134 if (ask && !dir_ask_sysop_to_mount_next_volume(jcr, dev)) {
135 Dmsg0(100, "Error return ask_sysop ...\n");
136 return 0; /* error return */
138 Dmsg1(100, "want vol=%s\n", jcr->VolumeName);
141 for ( ; !(dev->state & ST_OPENED); ) {
143 if (dev_cap(dev, CAP_STREAM)) {
144 mode = OPEN_WRITE_ONLY;
146 mode = OPEN_READ_WRITE;
148 if (open_dev(dev, jcr->VolCatInfo.VolCatName, mode) < 0) {
149 Jmsg2(jcr, M_FATAL, 0, _("Unable to open device %s. ERR=%s\n"),
150 dev_name(dev), strerror_dev(dev));
156 * Now make sure we have the right tape mounted
160 * If we are writing to a stream device, ASSUME the volume label
163 if (dev_cap(dev, CAP_STREAM)) {
164 vol_label_status = VOL_OK;
165 create_volume_label(dev, jcr->VolumeName);
166 dev->VolHdr.LabelType = PRE_LABEL;
168 vol_label_status = read_dev_volume_label(jcr, dev, block);
170 switch (vol_label_status) {
172 Dmsg1(100, "Vol OK name=%s\n", jcr->VolumeName);
173 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
174 if (strcmp(dev->VolCatInfo.VolCatStatus, "Recycle") == 0) {
179 Dmsg1(100, "Vol NAME Error Name=%s\n", jcr->VolumeName);
181 * OK, we got a different volume mounted. First save the
182 * requested Volume info in the dev structure, then query if
183 * this volume is really OK. If not, put back the desired
184 * volume name and continue.
186 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
187 /* Check if this is a valid Volume in the pool */
188 strcpy(jcr->VolumeName, dev->VolHdr.VolName);
189 if (!dir_get_volume_info(jcr, 1)) {
190 Mmsg(&jcr->errmsg, _("Wanted Volume \"%s\".\n"
191 " Actual Volume \"%s\" not acceptable because:\n"
193 dev->VolCatInfo.VolCatName, dev->VolHdr.VolName,
194 jcr->dir_bsock->msg);
195 /* Restore desired volume name, note device info out of sync */
196 memcpy(&jcr->VolCatInfo, &dev->VolCatInfo, sizeof(jcr->VolCatInfo));
199 Dmsg1(100, "want new name=%s\n", jcr->VolumeName);
200 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
205 Dmsg1(500, "Vol NO_LABEL or IO_ERROR name=%s\n", jcr->VolumeName);
206 /* If permitted, create a label */
207 if (dev_cap(dev, CAP_LABEL)) {
208 Dmsg0(100, "Create volume label\n");
209 if (!write_volume_label_to_dev(jcr, (DEVRES *)dev->device, jcr->VolumeName,
211 Dmsg0(100, "!write_vol_label\n");
214 Jmsg(jcr, M_INFO, 0, _("Labeled new Volume \"%s\" on device %s.\n"),
215 jcr->VolumeName, dev_name(dev));
216 goto read_volume; /* read label we just wrote */
218 /* NOTE! Fall-through wanted. */
221 /* Send error message */
222 Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
224 Jmsg(jcr, M_ERROR, 0, _("Autochanger Volume \"%s\" not found in slot %d.\n\
225 Setting slot to zero in catalog.\n"),
226 jcr->VolCatInfo.VolCatName, jcr->VolCatInfo.Slot);
227 jcr->VolCatInfo.Slot = 0; /* invalidate slot */
228 Dmsg0(200, "update vol info in mount\n");
229 dir_update_volume_info(jcr, &jcr->VolCatInfo, 1); /* set slot */
231 Dmsg0(100, "Default\n");
238 * See if we have a fresh tape or tape with data.
240 * Note, if the LabelType is PRE_LABEL, it was labeled
241 * but never written. If so, rewrite the label but set as
242 * VOL_LABEL. We rewind and return the label (reconstructed)
243 * in the block so that in the case of a new tape, data can
244 * be appended just after the block label. If we are writing
245 * an second volume, the calling routine will write the label
246 * before writing the overflow block.
248 * If the tape is marked as Recycle, we rewrite the label.
250 if (dev->VolHdr.LabelType == PRE_LABEL || recycle) {
251 Dmsg1(190, "ready_for_append found freshly labeled volume. dev=%x\n", dev);
252 dev->VolHdr.LabelType = VOL_LABEL; /* set Volume label */
253 write_volume_label_to_block(jcr, dev, block);
255 * If we are not dealing with a streaming device,
256 * write the block now to ensure we have write permission.
257 * It is better to find out now rather than later.
259 if (!dev_cap(dev, CAP_STREAM)) {
260 dev->VolCatInfo.VolCatBytes = 0;
261 if (!rewind_dev(dev)) {
262 Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
263 dev_name(dev), strerror_dev(dev));
266 if (!truncate_dev(dev)) {
267 Jmsg2(jcr, M_WARNING, 0, _("Truncate error on device %s. ERR=%s\n"),
268 dev_name(dev), strerror_dev(dev));
271 /* Attempt write to check write permission */
272 if (!write_block_to_dev(jcr, dev, block)) {
273 Jmsg2(jcr, M_ERROR, 0, _("Unable to write device %s. ERR=%s\n"),
274 dev_name(dev), strerror_dev(dev));
277 if (!rewind_dev(dev)) {
278 Jmsg2(jcr, M_ERROR, 0, _("Unable to rewind device %s. ERR=%s\n"),
279 dev_name(dev), strerror_dev(dev));
283 /* Recreate a correct volume label and return it in the block */
284 write_volume_label_to_block(jcr, dev, block);
286 /* Set or reset Volume statistics */
287 dev->VolCatInfo.VolCatJobs = 0;
288 dev->VolCatInfo.VolCatFiles = 0;
289 dev->VolCatInfo.VolCatErrors = 0;
290 dev->VolCatInfo.VolCatBlocks = 0;
292 dev->VolCatInfo.VolCatMounts++;
293 dev->VolCatInfo.VolCatRecycles++;
295 dev->VolCatInfo.VolCatMounts = 1;
296 dev->VolCatInfo.VolCatRecycles = 0;
297 dev->VolCatInfo.VolCatWrites = 1;
298 dev->VolCatInfo.VolCatReads = 1;
300 strcpy(dev->VolCatInfo.VolCatStatus, "Append");
301 Dmsg0(200, "dir_update_vol_info. Set Append\n");
302 dir_update_volume_info(jcr, &dev->VolCatInfo, 1); /* indicate doing relabel */
304 Jmsg(jcr, M_INFO, 0, _("Recycled volume \"%s\" on device %s, all previous data lost.\n"),
305 jcr->VolumeName, dev_name(dev));
307 Jmsg(jcr, M_INFO, 0, _("Wrote label to prelabeled Volume \"%s\" on device %s\n"),
308 jcr->VolumeName, dev_name(dev));
313 * OK, at this point, we have a valid Bacula label, but
314 * we need to position to the end of the volume, since we are
315 * just now putting it into append mode.
317 Dmsg0(200, "Device previously written, moving to end of data\n");
318 Jmsg(jcr, M_INFO, 0, _("Volume \"%s\" previously written, moving to end of data.\n"),
321 Jmsg(jcr, M_ERROR, 0, _("Unable to position to end of data %s. ERR=%s\n"),
322 dev_name(dev), strerror_dev(dev));
323 Jmsg(jcr, M_INFO, 0, _("Marking Volume \"%s\" in Error in Catalog.\n"),
325 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
326 Dmsg0(200, "dir_update_vol_info. Set Error.\n");
327 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
330 /* *****FIXME**** we should do some checking for files too */
331 if (dev_is_tape(dev)) {
333 * Check if we are positioned on the tape at the same place
334 * that the database says we should be.
336 if (dev->VolCatInfo.VolCatFiles == dev_file(dev)) {
337 Jmsg(jcr, M_INFO, 0, _("Ready to append to end of Volume at file=%d.\n"),
340 Jmsg(jcr, M_ERROR, 0, _("I canot write on this volume because:\n\
341 The number of files mismatch! Volume=%d Catalog=%d\n"),
342 dev_file(dev), dev->VolCatInfo.VolCatFiles);
343 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
344 Dmsg0(200, "dir_update_vol_info. Set Error.\n");
345 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
349 dev->VolCatInfo.VolCatMounts++; /* Update mounts */
350 Dmsg1(200, "update volinfo mounts=%d\n", dev->VolCatInfo.VolCatMounts);
351 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
352 /* Return an empty block */
353 empty_block(block); /* we used it for reading so set for write */
355 dev->state |= ST_APPEND;
356 Dmsg0(100, "Normal return from read_dev_for_append\n");
361 int mount_next_read_volume(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
363 Dmsg2(90, "NumVolumes=%d CurVolume=%d\n", jcr->NumVolumes, jcr->CurVolume);
365 * End Of Tape -- mount next Volume (if another specified)
367 if (jcr->NumVolumes > 1 && jcr->CurVolume < jcr->NumVolumes) {
369 dev->state &= ~ST_READ;
370 if (!acquire_device_for_read(jcr, dev, block)) {
371 Emsg2(M_FATAL, 0, "Cannot open Dev=%s, Vol=%s\n", dev_name(dev),
375 return 1; /* next volume mounted */
377 Dmsg0(90, "End of Device reached.\n");