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);
101 Dmsg1(100, "autoload_dev returns %d\n", autochanger);
104 * If we autochanged to correct Volume or (we have not just
105 * released the Volume AND we can automount) we go ahead
106 * and read the label. If there is no tape in the drive,
107 * we will err, recurse and ask the operator the next time.
109 if (autochanger || (!release && dev_is_tape(dev) && dev_cap(dev, CAP_AUTOMOUNT))) {
110 ask = 0; /* don't ask SYSOP this time */
113 release = 1; /* release next time if we "recurse" */
116 if (ask && !dir_ask_sysop_to_mount_next_volume(jcr, dev)) {
117 Dmsg0(100, "Error return ask_sysop ...\n");
118 return 0; /* error return */
120 Dmsg1(100, "want vol=%s\n", jcr->VolumeName);
123 if (!(dev->state & ST_OPENED)) {
125 if (dev_cap(dev, CAP_STREAM)) {
126 mode = OPEN_WRITE_ONLY;
128 mode = OPEN_READ_WRITE;
130 if (open_dev(dev, jcr->VolCatInfo.VolCatName, mode) < 0) {
131 Jmsg2(jcr, M_FATAL, 0, _("Unable to open device %s. ERR=%s\n"),
132 dev_name(dev), strerror_dev(dev));
138 * Now make sure we have the right tape mounted
142 * If we are writing to a stream device, ASSUME the volume label
145 if (dev_cap(dev, CAP_STREAM)) {
146 vol_label_status = VOL_OK;
147 create_volume_label(dev, jcr->VolumeName, "Default");
148 dev->VolHdr.LabelType = PRE_LABEL;
150 vol_label_status = read_dev_volume_label(jcr, dev, block);
153 * At this point, dev->VolCatInfo has what is in the drive, if anything,
154 * and jcr->VolCatInfo has what the Director wants.
156 switch (vol_label_status) {
158 Dmsg1(100, "Vol OK name=%s\n", jcr->VolumeName);
159 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
160 if (strcmp(dev->VolCatInfo.VolCatStatus, "Recycle") == 0) {
163 break; /* got a Volume */
165 VOLUME_CAT_INFO VolCatInfo;
167 Dmsg1(100, "Vol NAME Error Name=%s\n", jcr->VolumeName);
169 * OK, we got a different volume mounted. First save the
170 * requested Volume info (jcr) structure, then query if
171 * this volume is really OK. If not, put back the desired
172 * volume name and continue.
174 memcpy(&VolCatInfo, &jcr->VolCatInfo, sizeof(jcr->VolCatInfo));
175 /* Check if this is a valid Volume in the pool */
176 pm_strcpy(&jcr->VolumeName, dev->VolHdr.VolName);
177 if (!dir_get_volume_info(jcr, GET_VOL_INFO_FOR_WRITE)) {
178 Mmsg(&jcr->errmsg, _("Director wanted Volume \"%s\".\n"
179 " Current Volume \"%s\" not acceptable because:\n"
181 VolCatInfo.VolCatName, dev->VolHdr.VolName,
182 jcr->dir_bsock->msg);
183 /* Restore desired volume name, note device info out of sync */
184 memcpy(&jcr->VolCatInfo, &VolCatInfo, sizeof(jcr->VolCatInfo));
187 Dmsg1(100, "want new name=%s\n", jcr->VolumeName);
188 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(dev->VolCatInfo));
189 if (strcmp(dev->VolCatInfo.VolCatStatus, "Recycle") == 0) {
192 break; /* got a Volume */
194 * At this point, we assume we have a blank tape mounted.
199 * If permitted, we label the device, make sure we can do
200 * it by checking that the VolCatBytes is zero => not labeled.
202 if (dev_cap(dev, CAP_LABEL) && dev->VolCatInfo.VolCatBytes == 0) {
203 Dmsg0(100, "Create volume label\n");
204 if (!write_volume_label_to_dev(jcr, (DEVRES *)dev->device, jcr->VolumeName,
206 Dmsg0(100, "!write_vol_label\n");
209 Dmsg0(200, "dir_update_vol_info. Set Append\n");
210 memcpy(&dev->VolCatInfo, &jcr->VolCatInfo, sizeof(dev->VolCatInfo));
211 dir_update_volume_info(jcr, &dev->VolCatInfo, 1); /* indicate tape labeled */
212 Jmsg(jcr, M_INFO, 0, _("Labeled new Volume \"%s\" on device %s.\n"),
213 jcr->VolumeName, dev_name(dev));
214 goto read_volume; /* read label we just wrote */
216 /* NOTE! Fall-through wanted. */
220 /* Send error message */
221 Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
222 Dmsg0(100, "Default\n");
230 * See if we have a fresh tape or tape with data.
232 * Note, if the LabelType is PRE_LABEL, it was labeled
233 * but never written. If so, rewrite the label but set as
234 * VOL_LABEL. We rewind and return the label (reconstructed)
235 * in the block so that in the case of a new tape, data can
236 * be appended just after the block label. If we are writing
237 * an second volume, the calling routine will write the label
238 * before writing the overflow block.
240 * If the tape is marked as Recycle, we rewrite the label.
242 if (dev->VolHdr.LabelType == PRE_LABEL || recycle) {
243 Dmsg1(190, "ready_for_append found freshly labeled volume. dev=%x\n", dev);
244 dev->VolHdr.LabelType = VOL_LABEL; /* set Volume label */
245 write_volume_label_to_block(jcr, dev, block);
247 * If we are not dealing with a streaming device,
248 * write the block now to ensure we have write permission.
249 * It is better to find out now rather than later.
251 if (!dev_cap(dev, CAP_STREAM)) {
252 if (!rewind_dev(dev)) {
253 Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
254 dev_name(dev), strerror_dev(dev));
257 if (!truncate_dev(dev)) {
258 Jmsg2(jcr, M_WARNING, 0, _("Truncate error on device %s. ERR=%s\n"),
259 dev_name(dev), strerror_dev(dev));
262 /* Attempt write to check write permission */
263 if (!write_block_to_dev(jcr, dev, block)) {
264 Jmsg2(jcr, M_ERROR, 0, _("Unable to write device %s. ERR=%s\n"),
265 dev_name(dev), strerror_dev(dev));
268 if (!rewind_dev(dev)) {
269 Jmsg2(jcr, M_ERROR, 0, _("Unable to rewind device %s. ERR=%s\n"),
270 dev_name(dev), strerror_dev(dev));
274 /* Recreate a correct volume label and return it in the block */
275 write_volume_label_to_block(jcr, dev, block);
277 /* Set or reset Volume statistics */
278 dev->VolCatInfo.VolCatJobs = 0;
279 dev->VolCatInfo.VolCatFiles = 0;
280 dev->VolCatInfo.VolCatBytes = 0;
281 dev->VolCatInfo.VolCatErrors = 0;
282 dev->VolCatInfo.VolCatBlocks = 0;
283 dev->VolCatInfo.VolCatRBytes = 0;
285 dev->VolCatInfo.VolCatMounts++;
286 dev->VolCatInfo.VolCatRecycles++;
288 dev->VolCatInfo.VolCatMounts = 1;
289 dev->VolCatInfo.VolCatRecycles = 0;
290 dev->VolCatInfo.VolCatWrites = 1;
291 dev->VolCatInfo.VolCatReads = 1;
293 Dmsg0(200, "dir_update_vol_info. Set Append\n");
294 dir_update_volume_info(jcr, &dev->VolCatInfo, 1); /* indicate doing relabel */
296 Jmsg(jcr, M_INFO, 0, _("Recycled volume \"%s\" on device %s, all previous data lost.\n"),
297 jcr->VolumeName, dev_name(dev));
299 Jmsg(jcr, M_INFO, 0, _("Wrote label to prelabeled Volume \"%s\" on device %s\n"),
300 jcr->VolumeName, dev_name(dev));
305 * OK, at this point, we have a valid Bacula label, but
306 * we need to position to the end of the volume, since we are
307 * just now putting it into append mode.
309 Dmsg0(200, "Device previously written, moving to end of data\n");
310 Jmsg(jcr, M_INFO, 0, _("Volume \"%s\" previously written, moving to end of data.\n"),
313 Jmsg(jcr, M_ERROR, 0, _("Unable to position to end of data %s. ERR=%s\n"),
314 dev_name(dev), strerror_dev(dev));
315 Jmsg(jcr, M_INFO, 0, _("Marking Volume \"%s\" in Error in Catalog.\n"),
317 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
318 Dmsg0(200, "dir_update_vol_info. Set Error.\n");
319 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
322 /* *****FIXME**** we should do some checking for files too */
323 if (dev_is_tape(dev)) {
325 * Check if we are positioned on the tape at the same place
326 * that the database says we should be.
328 if (dev->VolCatInfo.VolCatFiles == dev_file(dev)) {
329 Jmsg(jcr, M_INFO, 0, _("Ready to append to end of Volume at file=%d.\n"),
332 Jmsg(jcr, M_ERROR, 0, _("I canot write on this volume because:\n\
333 The number of files mismatch! Volume=%u Catalog=%u\n"),
334 dev_file(dev), dev->VolCatInfo.VolCatFiles);
335 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
336 Dmsg0(200, "dir_update_vol_info. Set Error.\n");
337 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
341 dev->VolCatInfo.VolCatMounts++; /* Update mounts */
342 Dmsg1(200, "update volinfo mounts=%d\n", dev->VolCatInfo.VolCatMounts);
343 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
344 /* Return an empty block */
345 empty_block(block); /* we used it for reading so set for write */
347 dev->state |= ST_APPEND;
348 Dmsg0(100, "Normal return from read_dev_for_append\n");
353 int mount_next_read_volume(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
355 Dmsg2(90, "NumVolumes=%d CurVolume=%d\n", jcr->NumVolumes, jcr->CurVolume);
357 * End Of Tape -- mount next Volume (if another specified)
359 if (jcr->NumVolumes > 1 && jcr->CurVolume < jcr->NumVolumes) {
361 dev->state &= ~ST_READ;
362 if (!acquire_device_for_read(jcr, dev, block)) {
363 Jmsg2(jcr, M_FATAL, 0, "Cannot open Dev=%s, Vol=%s\n", dev_name(dev),
367 return 1; /* next volume mounted */
369 Dmsg0(90, "End of Device reached.\n");
374 * Either because we are going to hang a new volume, or because
375 * of explicit user request, we release the current volume.
377 void release_volume(JCR *jcr, DEVICE *dev)
381 Jmsg0(jcr, M_ERROR, 0, "Hey!!!!! WroteVol non-zero !!!!!\n");
384 * First erase all memory of the current volume
386 dev->block_num = dev->file = 0;
387 dev->EndBlock = dev->EndFile = 0;
388 memset(&dev->VolCatInfo, 0, sizeof(dev->VolCatInfo));
389 memset(&jcr->VolCatInfo, 0, sizeof(jcr->VolCatInfo));
390 memset(&dev->VolHdr, 0, sizeof(dev->VolHdr));
391 dev->state &= ~ST_LABEL; /* label not yet read */
392 jcr->VolumeName[0] = 0;
394 if ((dev->state & ST_OPENED) &&
395 (!dev_is_tape(dev) || !dev_cap(dev, CAP_ALWAYSOPEN))) {
396 offline_or_rewind_dev(dev);
400 /* If we have not closed the device, then at least rewind the tape */
401 if (dev->state & ST_OPENED) {
402 offline_or_rewind_dev(dev);