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_canceled(jcr)) {
60 Jmsg(jcr, M_FATAL, 0, _("Job canceled.\n"));
63 recycle = ask = autochanger = 0;
65 Dmsg0(100, "mount_next_volume release=1\n");
66 release_volume(jcr, dev);
67 ask = 1; /* ask operator to mount tape */
71 * Get Director's idea of what tape we should have mounted.
73 if (!dir_find_next_appendable_volume(jcr) &&
74 !dir_ask_sysop_to_mount_next_volume(jcr, dev)) {
77 Dmsg2(100, "After find_next_append. Vol=%s Slot=%d\n",
78 jcr->VolCatInfo.VolCatName, jcr->VolCatInfo.Slot);
81 * Get next volume and ready it for append
82 * This code ensures that the device is ready for
83 * writing. We start from the assumption that there
84 * may not be a tape mounted.
86 * If the device is a file, we create the output
87 * file. If it is a tape, we check the volume name
88 * and move the tape to the end of data.
90 * It assumes that the device is not already in use!
94 Dmsg0(100, "Enter ready_dev_for_append\n");
96 dev->state &= ~(ST_APPEND|ST_READ|ST_EOT|ST_WEOT|ST_EOF);
100 autochanger = autoload_device(jcr, dev, 1, NULL);
103 * If we autochanged to correct Volume or (we have not just
104 * released the Volume AND we can automount) we go ahead
105 * and read the label. If there is no tape in the drive,
106 * we will err, recurse and ask the operator the next time.
108 if (autochanger || (!release && dev_is_tape(dev) && dev_cap(dev, CAP_AUTOMOUNT))) {
109 ask = 0; /* don't ask SYSOP this time */
112 release = 1; /* release next time if we "recurse" */
115 if (ask && !dir_ask_sysop_to_mount_next_volume(jcr, dev)) {
116 Dmsg0(100, "Error return ask_sysop ...\n");
117 return 0; /* error return */
119 Dmsg1(100, "want vol=%s\n", jcr->VolumeName);
122 if (!(dev->state & ST_OPENED)) {
124 if (dev_cap(dev, CAP_STREAM)) {
125 mode = OPEN_WRITE_ONLY;
127 mode = OPEN_READ_WRITE;
129 if (open_dev(dev, jcr->VolCatInfo.VolCatName, mode) < 0) {
130 Jmsg2(jcr, M_FATAL, 0, _("Unable to open device %s. ERR=%s\n"),
131 dev_name(dev), strerror_dev(dev));
137 * Now make sure we have the right tape mounted
141 * If we are writing to a stream device, ASSUME the volume label
144 if (dev_cap(dev, CAP_STREAM)) {
145 vol_label_status = VOL_OK;
146 create_volume_label(dev, jcr->VolumeName, "Default");
147 dev->VolHdr.LabelType = PRE_LABEL;
149 vol_label_status = read_dev_volume_label(jcr, dev, block);
152 * At this point, dev->VolCatInfo has what is in the drive, if anything,
153 * and jcr->VolCatInfo has what the Director wants.
155 switch (vol_label_status) {
157 Dmsg1(100, "Vol OK name=%s\n", jcr->VolumeName);
158 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
159 if (strcmp(dev->VolCatInfo.VolCatStatus, "Recycle") == 0) {
162 break; /* got a Volume */
164 VOLUME_CAT_INFO VolCatInfo;
166 Dmsg1(100, "Vol NAME Error Name=%s\n", jcr->VolumeName);
168 * OK, we got a different volume mounted. First save the
169 * requested Volume info (jcr) structure, then query if
170 * this volume is really OK. If not, put back the desired
171 * volume name and continue.
173 memcpy(&VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
174 /* Check if this is a valid Volume in the pool */
175 pm_strcpy(&jcr->VolumeName, dev->VolHdr.VolName);
176 if (!dir_get_volume_info(jcr, GET_VOL_INFO_FOR_WRITE)) {
177 Mmsg(&jcr->errmsg, _("Director wanted Volume \"%s\".\n"
178 " Current Volume \"%s\" not acceptable because:\n"
180 VolCatInfo.VolCatName, dev->VolHdr.VolName,
181 jcr->dir_bsock->msg);
182 /* Restore desired volume name, note device info out of sync */
183 memcpy(&jcr->VolCatInfo, &VolCatInfo, sizeof(jcr->VolCatInfo));
186 Dmsg1(100, "want new name=%s\n", jcr->VolumeName);
187 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
188 if (strcmp(dev->VolCatInfo.VolCatStatus, "Recycle") == 0) {
191 break; /* got a Volume */
193 * At this point, we assume we have a blank tape mounted.
197 Dmsg1(500, "Vol NO_LABEL or IO_ERROR name=%s\n", jcr->VolumeName);
198 /* If permitted, create a label */
199 if (dev_cap(dev, CAP_LABEL)) {
200 Dmsg0(100, "Create volume label\n");
201 /* ***FIXME*** ask for label name */
202 if (!write_volume_label_to_dev(jcr, (DEVRES *)dev->device, jcr->VolumeName,
204 Dmsg0(100, "!write_vol_label\n");
207 Jmsg(jcr, M_INFO, 0, _("Labeled new Volume \"%s\" on device %s.\n"),
208 jcr->VolumeName, dev_name(dev));
209 goto read_volume; /* read label we just wrote */
211 /* NOTE! Fall-through wanted. */
215 /* Send error message */
216 Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
217 Dmsg0(100, "Default\n");
225 * See if we have a fresh tape or tape with data.
227 * Note, if the LabelType is PRE_LABEL, it was labeled
228 * but never written. If so, rewrite the label but set as
229 * VOL_LABEL. We rewind and return the label (reconstructed)
230 * in the block so that in the case of a new tape, data can
231 * be appended just after the block label. If we are writing
232 * an second volume, the calling routine will write the label
233 * before writing the overflow block.
235 * If the tape is marked as Recycle, we rewrite the label.
237 if (dev->VolHdr.LabelType == PRE_LABEL || recycle) {
238 Dmsg1(190, "ready_for_append found freshly labeled volume. dev=%x\n", dev);
239 dev->VolHdr.LabelType = VOL_LABEL; /* set Volume label */
240 write_volume_label_to_block(jcr, dev, block);
242 * If we are not dealing with a streaming device,
243 * write the block now to ensure we have write permission.
244 * It is better to find out now rather than later.
246 if (!dev_cap(dev, CAP_STREAM)) {
247 dev->VolCatInfo.VolCatBytes = 0;
248 if (!rewind_dev(dev)) {
249 Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
250 dev_name(dev), strerror_dev(dev));
253 if (!truncate_dev(dev)) {
254 Jmsg2(jcr, M_WARNING, 0, _("Truncate error on device %s. ERR=%s\n"),
255 dev_name(dev), strerror_dev(dev));
258 /* Attempt write to check write permission */
259 if (!write_block_to_dev(jcr, dev, block)) {
260 Jmsg2(jcr, M_ERROR, 0, _("Unable to write device %s. ERR=%s\n"),
261 dev_name(dev), strerror_dev(dev));
264 if (!rewind_dev(dev)) {
265 Jmsg2(jcr, M_ERROR, 0, _("Unable to rewind device %s. ERR=%s\n"),
266 dev_name(dev), strerror_dev(dev));
270 /* Recreate a correct volume label and return it in the block */
271 write_volume_label_to_block(jcr, dev, block);
273 /* Set or reset Volume statistics */
274 dev->VolCatInfo.VolCatJobs = 0;
275 dev->VolCatInfo.VolCatFiles = 0;
276 dev->VolCatInfo.VolCatErrors = 0;
277 dev->VolCatInfo.VolCatBlocks = 0;
278 dev->VolCatInfo.VolCatRBytes = 0;
280 dev->VolCatInfo.VolCatMounts++;
281 dev->VolCatInfo.VolCatRecycles++;
283 dev->VolCatInfo.VolCatMounts = 1;
284 dev->VolCatInfo.VolCatRecycles = 0;
285 dev->VolCatInfo.VolCatWrites = 1;
286 dev->VolCatInfo.VolCatReads = 1;
288 bstrncpy(dev->VolCatInfo.VolCatStatus, "Append", sizeof(dev->VolCatInfo.VolCatStatus));
289 Dmsg0(200, "dir_update_vol_info. Set Append\n");
290 dir_update_volume_info(jcr, &dev->VolCatInfo, 1); /* indicate doing relabel */
292 Jmsg(jcr, M_INFO, 0, _("Recycled volume \"%s\" on device %s, all previous data lost.\n"),
293 jcr->VolumeName, dev_name(dev));
295 Jmsg(jcr, M_INFO, 0, _("Wrote label to prelabeled Volume \"%s\" on device %s\n"),
296 jcr->VolumeName, dev_name(dev));
301 * OK, at this point, we have a valid Bacula label, but
302 * we need to position to the end of the volume, since we are
303 * just now putting it into append mode.
305 Dmsg0(200, "Device previously written, moving to end of data\n");
306 Jmsg(jcr, M_INFO, 0, _("Volume \"%s\" previously written, moving to end of data.\n"),
309 Jmsg(jcr, M_ERROR, 0, _("Unable to position to end of data %s. ERR=%s\n"),
310 dev_name(dev), strerror_dev(dev));
311 Jmsg(jcr, M_INFO, 0, _("Marking Volume \"%s\" in Error in Catalog.\n"),
313 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
314 Dmsg0(200, "dir_update_vol_info. Set Error.\n");
315 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
318 /* *****FIXME**** we should do some checking for files too */
319 if (dev_is_tape(dev)) {
321 * Check if we are positioned on the tape at the same place
322 * that the database says we should be.
324 if (dev->VolCatInfo.VolCatFiles == dev_file(dev)) {
325 Jmsg(jcr, M_INFO, 0, _("Ready to append to end of Volume at file=%d.\n"),
328 Jmsg(jcr, M_ERROR, 0, _("I canot write on this volume because:\n\
329 The number of files mismatch! Volume=%u Catalog=%u\n"),
330 dev_file(dev), dev->VolCatInfo.VolCatFiles);
331 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
332 Dmsg0(200, "dir_update_vol_info. Set Error.\n");
333 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
337 dev->VolCatInfo.VolCatMounts++; /* Update mounts */
338 Dmsg1(200, "update volinfo mounts=%d\n", dev->VolCatInfo.VolCatMounts);
339 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
340 /* Return an empty block */
341 empty_block(block); /* we used it for reading so set for write */
343 dev->state |= ST_APPEND;
344 Dmsg0(100, "Normal return from read_dev_for_append\n");
349 int mount_next_read_volume(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
351 Dmsg2(90, "NumVolumes=%d CurVolume=%d\n", jcr->NumVolumes, jcr->CurVolume);
353 * End Of Tape -- mount next Volume (if another specified)
355 if (jcr->NumVolumes > 1 && jcr->CurVolume < jcr->NumVolumes) {
357 dev->state &= ~ST_READ;
358 if (!acquire_device_for_read(jcr, dev, block)) {
359 Jmsg2(jcr, M_FATAL, 0, "Cannot open Dev=%s, Vol=%s\n", dev_name(dev),
363 return 1; /* next volume mounted */
365 Dmsg0(90, "End of Device reached.\n");
370 * Either because we are going to hang a new volume, or because
371 * of explicit user request, we release the current volume.
373 void release_volume(JCR *jcr, DEVICE *dev)
377 Jmsg0(jcr, M_ERROR, 0, "Hey!!!!! WroteVol non-zero !!!!!\n");
380 * First erase all memory of the current volume
382 dev->block_num = dev->file = 0;
383 dev->EndBlock = dev->EndFile = 0;
384 memset(&dev->VolCatInfo, 0, sizeof(dev->VolCatInfo));
385 memset(&jcr->VolCatInfo, 0, sizeof(jcr->VolCatInfo));
386 memset(&dev->VolHdr, 0, sizeof(dev->VolHdr));
387 dev->state &= ~ST_LABEL; /* label not yet read */
388 jcr->VolumeName[0] = 0;
390 if ((dev->state & ST_OPENED) &&
391 (!dev_is_tape(dev) || !dev_cap(dev, CAP_ALWAYSOPEN))) {
392 offline_or_rewind_dev(dev);
396 /* If we have not closed the device, then at least rewind the tape */
397 if (dev->state & ST_OPENED) {
398 offline_or_rewind_dev(dev);