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);
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 break; /* got a Volume */
192 Dmsg1(500, "Vol NO_LABEL or IO_ERROR name=%s\n", jcr->VolumeName);
193 /* If permitted, create a label */
194 if (dev_cap(dev, CAP_LABEL)) {
195 Dmsg0(100, "Create volume label\n");
196 if (!write_volume_label_to_dev(jcr, (DEVRES *)dev->device, jcr->VolumeName,
198 Dmsg0(100, "!write_vol_label\n");
201 Jmsg(jcr, M_INFO, 0, _("Labeled new Volume \"%s\" on device %s.\n"),
202 jcr->VolumeName, dev_name(dev));
203 goto read_volume; /* read label we just wrote */
205 /* NOTE! Fall-through wanted. */
208 /* Send error message */
209 Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
210 Dmsg0(100, "Default\n");
218 * See if we have a fresh tape or tape with data.
220 * Note, if the LabelType is PRE_LABEL, it was labeled
221 * but never written. If so, rewrite the label but set as
222 * VOL_LABEL. We rewind and return the label (reconstructed)
223 * in the block so that in the case of a new tape, data can
224 * be appended just after the block label. If we are writing
225 * an second volume, the calling routine will write the label
226 * before writing the overflow block.
228 * If the tape is marked as Recycle, we rewrite the label.
230 if (dev->VolHdr.LabelType == PRE_LABEL || recycle) {
231 Dmsg1(190, "ready_for_append found freshly labeled volume. dev=%x\n", dev);
232 dev->VolHdr.LabelType = VOL_LABEL; /* set Volume label */
233 write_volume_label_to_block(jcr, dev, block);
235 * If we are not dealing with a streaming device,
236 * write the block now to ensure we have write permission.
237 * It is better to find out now rather than later.
239 if (!dev_cap(dev, CAP_STREAM)) {
240 dev->VolCatInfo.VolCatBytes = 0;
241 if (!rewind_dev(dev)) {
242 Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
243 dev_name(dev), strerror_dev(dev));
246 if (!truncate_dev(dev)) {
247 Jmsg2(jcr, M_WARNING, 0, _("Truncate error on device %s. ERR=%s\n"),
248 dev_name(dev), strerror_dev(dev));
251 /* Attempt write to check write permission */
252 if (!write_block_to_dev(jcr, dev, block)) {
253 Jmsg2(jcr, M_ERROR, 0, _("Unable to write device %s. ERR=%s\n"),
254 dev_name(dev), strerror_dev(dev));
257 if (!rewind_dev(dev)) {
258 Jmsg2(jcr, M_ERROR, 0, _("Unable to rewind device %s. ERR=%s\n"),
259 dev_name(dev), strerror_dev(dev));
263 /* Recreate a correct volume label and return it in the block */
264 write_volume_label_to_block(jcr, dev, block);
266 /* Set or reset Volume statistics */
267 dev->VolCatInfo.VolCatJobs = 0;
268 dev->VolCatInfo.VolCatFiles = 0;
269 dev->VolCatInfo.VolCatErrors = 0;
270 dev->VolCatInfo.VolCatBlocks = 0;
271 dev->VolCatInfo.VolCatRBytes = 0;
273 dev->VolCatInfo.VolCatMounts++;
274 dev->VolCatInfo.VolCatRecycles++;
276 dev->VolCatInfo.VolCatMounts = 1;
277 dev->VolCatInfo.VolCatRecycles = 0;
278 dev->VolCatInfo.VolCatWrites = 1;
279 dev->VolCatInfo.VolCatReads = 1;
281 strcpy(dev->VolCatInfo.VolCatStatus, "Append");
282 Dmsg0(200, "dir_update_vol_info. Set Append\n");
283 dir_update_volume_info(jcr, &dev->VolCatInfo, 1); /* indicate doing relabel */
285 Jmsg(jcr, M_INFO, 0, _("Recycled volume \"%s\" on device %s, all previous data lost.\n"),
286 jcr->VolumeName, dev_name(dev));
288 Jmsg(jcr, M_INFO, 0, _("Wrote label to prelabeled Volume \"%s\" on device %s\n"),
289 jcr->VolumeName, dev_name(dev));
294 * OK, at this point, we have a valid Bacula label, but
295 * we need to position to the end of the volume, since we are
296 * just now putting it into append mode.
298 Dmsg0(200, "Device previously written, moving to end of data\n");
299 Jmsg(jcr, M_INFO, 0, _("Volume \"%s\" previously written, moving to end of data.\n"),
302 Jmsg(jcr, M_ERROR, 0, _("Unable to position to end of data %s. ERR=%s\n"),
303 dev_name(dev), strerror_dev(dev));
304 Jmsg(jcr, M_INFO, 0, _("Marking Volume \"%s\" in Error in Catalog.\n"),
306 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
307 Dmsg0(200, "dir_update_vol_info. Set Error.\n");
308 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
311 /* *****FIXME**** we should do some checking for files too */
312 if (dev_is_tape(dev)) {
314 * Check if we are positioned on the tape at the same place
315 * that the database says we should be.
317 if (dev->VolCatInfo.VolCatFiles == dev_file(dev)) {
318 Jmsg(jcr, M_INFO, 0, _("Ready to append to end of Volume at file=%d.\n"),
321 Jmsg(jcr, M_ERROR, 0, _("I canot write on this volume because:\n\
322 The number of files mismatch! Volume=%u Catalog=%u\n"),
323 dev_file(dev), dev->VolCatInfo.VolCatFiles);
324 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
325 Dmsg0(200, "dir_update_vol_info. Set Error.\n");
326 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
330 dev->VolCatInfo.VolCatMounts++; /* Update mounts */
331 Dmsg1(200, "update volinfo mounts=%d\n", dev->VolCatInfo.VolCatMounts);
332 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
333 /* Return an empty block */
334 empty_block(block); /* we used it for reading so set for write */
336 dev->state |= ST_APPEND;
337 Dmsg0(100, "Normal return from read_dev_for_append\n");
342 int mount_next_read_volume(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
344 Dmsg2(90, "NumVolumes=%d CurVolume=%d\n", jcr->NumVolumes, jcr->CurVolume);
346 * End Of Tape -- mount next Volume (if another specified)
348 if (jcr->NumVolumes > 1 && jcr->CurVolume < jcr->NumVolumes) {
350 dev->state &= ~ST_READ;
351 if (!acquire_device_for_read(jcr, dev, block)) {
352 Jmsg2(jcr, M_FATAL, 0, "Cannot open Dev=%s, Vol=%s\n", dev_name(dev),
356 return 1; /* next volume mounted */
358 Dmsg0(90, "End of Device reached.\n");
363 * Either because we are going to hang a new volume, or because
364 * of explicit user request, we release the current volume.
366 void release_volume(JCR *jcr, DEVICE *dev)
370 Jmsg0(jcr, M_ERROR, 0, "Hey!!!!! WroteVol non-zero !!!!!\n");
373 * First erase all memory of the current volume
375 dev->block_num = dev->file = 0;
376 dev->EndBlock = dev->EndFile = 0;
377 memset(&dev->VolCatInfo, 0, sizeof(dev->VolCatInfo));
378 memset(&jcr->VolCatInfo, 0, sizeof(jcr->VolCatInfo));
379 memset(&dev->VolHdr, 0, sizeof(dev->VolHdr));
380 dev->state &= ~ST_LABEL; /* label not yet read */
381 jcr->VolumeName[0] = 0;
383 if (!dev_is_tape(dev) || !dev_cap(dev, CAP_ALWAYSOPEN)) {
384 offline_or_rewind_dev(dev);
388 /* If we have not closed the device, then at least rewind the tape */
389 if (dev->state & ST_OPENED) {
390 offline_or_rewind_dev(dev);