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 if (strcmp(dev->VolCatInfo.VolCatStatus, "Recycle") == 0) {
191 break; /* got a Volume */
195 Dmsg1(500, "Vol NO_LABEL or IO_ERROR name=%s\n", jcr->VolumeName);
196 /* If permitted, create a label */
197 if (dev_cap(dev, CAP_LABEL)) {
198 Dmsg0(100, "Create volume label\n");
199 if (!write_volume_label_to_dev(jcr, (DEVRES *)dev->device, jcr->VolumeName,
201 Dmsg0(100, "!write_vol_label\n");
204 Jmsg(jcr, M_INFO, 0, _("Labeled new Volume \"%s\" on device %s.\n"),
205 jcr->VolumeName, dev_name(dev));
206 goto read_volume; /* read label we just wrote */
208 /* NOTE! Fall-through wanted. */
211 /* Send error message */
212 Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
213 Dmsg0(100, "Default\n");
221 * See if we have a fresh tape or tape with data.
223 * Note, if the LabelType is PRE_LABEL, it was labeled
224 * but never written. If so, rewrite the label but set as
225 * VOL_LABEL. We rewind and return the label (reconstructed)
226 * in the block so that in the case of a new tape, data can
227 * be appended just after the block label. If we are writing
228 * an second volume, the calling routine will write the label
229 * before writing the overflow block.
231 * If the tape is marked as Recycle, we rewrite the label.
233 if (dev->VolHdr.LabelType == PRE_LABEL || recycle) {
234 Dmsg1(190, "ready_for_append found freshly labeled volume. dev=%x\n", dev);
235 dev->VolHdr.LabelType = VOL_LABEL; /* set Volume label */
236 write_volume_label_to_block(jcr, dev, block);
238 * If we are not dealing with a streaming device,
239 * write the block now to ensure we have write permission.
240 * It is better to find out now rather than later.
242 if (!dev_cap(dev, CAP_STREAM)) {
243 dev->VolCatInfo.VolCatBytes = 0;
244 if (!rewind_dev(dev)) {
245 Jmsg2(jcr, M_WARNING, 0, _("Rewind error on device %s. ERR=%s\n"),
246 dev_name(dev), strerror_dev(dev));
249 if (!truncate_dev(dev)) {
250 Jmsg2(jcr, M_WARNING, 0, _("Truncate error on device %s. ERR=%s\n"),
251 dev_name(dev), strerror_dev(dev));
254 /* Attempt write to check write permission */
255 if (!write_block_to_dev(jcr, dev, block)) {
256 Jmsg2(jcr, M_ERROR, 0, _("Unable to write device %s. ERR=%s\n"),
257 dev_name(dev), strerror_dev(dev));
260 if (!rewind_dev(dev)) {
261 Jmsg2(jcr, M_ERROR, 0, _("Unable to rewind device %s. ERR=%s\n"),
262 dev_name(dev), strerror_dev(dev));
266 /* Recreate a correct volume label and return it in the block */
267 write_volume_label_to_block(jcr, dev, block);
269 /* Set or reset Volume statistics */
270 dev->VolCatInfo.VolCatJobs = 0;
271 dev->VolCatInfo.VolCatFiles = 0;
272 dev->VolCatInfo.VolCatErrors = 0;
273 dev->VolCatInfo.VolCatBlocks = 0;
274 dev->VolCatInfo.VolCatRBytes = 0;
276 dev->VolCatInfo.VolCatMounts++;
277 dev->VolCatInfo.VolCatRecycles++;
279 dev->VolCatInfo.VolCatMounts = 1;
280 dev->VolCatInfo.VolCatRecycles = 0;
281 dev->VolCatInfo.VolCatWrites = 1;
282 dev->VolCatInfo.VolCatReads = 1;
284 strcpy(dev->VolCatInfo.VolCatStatus, "Append");
285 Dmsg0(200, "dir_update_vol_info. Set Append\n");
286 dir_update_volume_info(jcr, &dev->VolCatInfo, 1); /* indicate doing relabel */
288 Jmsg(jcr, M_INFO, 0, _("Recycled volume \"%s\" on device %s, all previous data lost.\n"),
289 jcr->VolumeName, dev_name(dev));
291 Jmsg(jcr, M_INFO, 0, _("Wrote label to prelabeled Volume \"%s\" on device %s\n"),
292 jcr->VolumeName, dev_name(dev));
297 * OK, at this point, we have a valid Bacula label, but
298 * we need to position to the end of the volume, since we are
299 * just now putting it into append mode.
301 Dmsg0(200, "Device previously written, moving to end of data\n");
302 Jmsg(jcr, M_INFO, 0, _("Volume \"%s\" previously written, moving to end of data.\n"),
305 Jmsg(jcr, M_ERROR, 0, _("Unable to position to end of data %s. ERR=%s\n"),
306 dev_name(dev), strerror_dev(dev));
307 Jmsg(jcr, M_INFO, 0, _("Marking Volume \"%s\" in Error in Catalog.\n"),
309 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
310 Dmsg0(200, "dir_update_vol_info. Set Error.\n");
311 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
314 /* *****FIXME**** we should do some checking for files too */
315 if (dev_is_tape(dev)) {
317 * Check if we are positioned on the tape at the same place
318 * that the database says we should be.
320 if (dev->VolCatInfo.VolCatFiles == dev_file(dev)) {
321 Jmsg(jcr, M_INFO, 0, _("Ready to append to end of Volume at file=%d.\n"),
324 Jmsg(jcr, M_ERROR, 0, _("I canot write on this volume because:\n\
325 The number of files mismatch! Volume=%u Catalog=%u\n"),
326 dev_file(dev), dev->VolCatInfo.VolCatFiles);
327 strcpy(dev->VolCatInfo.VolCatStatus, "Error");
328 Dmsg0(200, "dir_update_vol_info. Set Error.\n");
329 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
333 dev->VolCatInfo.VolCatMounts++; /* Update mounts */
334 Dmsg1(200, "update volinfo mounts=%d\n", dev->VolCatInfo.VolCatMounts);
335 dir_update_volume_info(jcr, &dev->VolCatInfo, 0);
336 /* Return an empty block */
337 empty_block(block); /* we used it for reading so set for write */
339 dev->state |= ST_APPEND;
340 Dmsg0(100, "Normal return from read_dev_for_append\n");
345 int mount_next_read_volume(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
347 Dmsg2(90, "NumVolumes=%d CurVolume=%d\n", jcr->NumVolumes, jcr->CurVolume);
349 * End Of Tape -- mount next Volume (if another specified)
351 if (jcr->NumVolumes > 1 && jcr->CurVolume < jcr->NumVolumes) {
353 dev->state &= ~ST_READ;
354 if (!acquire_device_for_read(jcr, dev, block)) {
355 Jmsg2(jcr, M_FATAL, 0, "Cannot open Dev=%s, Vol=%s\n", dev_name(dev),
359 return 1; /* next volume mounted */
361 Dmsg0(90, "End of Device reached.\n");
366 * Either because we are going to hang a new volume, or because
367 * of explicit user request, we release the current volume.
369 void release_volume(JCR *jcr, DEVICE *dev)
373 Jmsg0(jcr, M_ERROR, 0, "Hey!!!!! WroteVol non-zero !!!!!\n");
376 * First erase all memory of the current volume
378 dev->block_num = dev->file = 0;
379 dev->EndBlock = dev->EndFile = 0;
380 memset(&dev->VolCatInfo, 0, sizeof(dev->VolCatInfo));
381 memset(&jcr->VolCatInfo, 0, sizeof(jcr->VolCatInfo));
382 memset(&dev->VolHdr, 0, sizeof(dev->VolHdr));
383 dev->state &= ~ST_LABEL; /* label not yet read */
384 jcr->VolumeName[0] = 0;
386 if (!dev_is_tape(dev) || !dev_cap(dev, CAP_ALWAYSOPEN)) {
387 offline_or_rewind_dev(dev);
391 /* If we have not closed the device, then at least rewind the tape */
392 if (dev->state & ST_OPENED) {
393 offline_or_rewind_dev(dev);