3 * Bacula Director -- next_vol -- handles finding the next
4 * volume for append. Split out of catreq.c August MMIII
5 * catalog request from the Storage daemon.
7 * Kern Sibbald, March MMI
12 Copyright (C) 2001-2004 Kern Sibbald and John Walker
14 This program is free software; you can redistribute it and/or
15 modify it under the terms of the GNU General Public License as
16 published by the Free Software Foundation; either version 2 of
17 the License, or (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 General Public License for more details.
24 You should have received a copy of the GNU General Public
25 License along with this program; if not, write to the Free
26 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
40 * MEDIA_DBR mr (zeroed out)
41 * create -- whether or not to create a new volume
43 int find_next_volume_for_append(JCR *jcr, MEDIA_DBR *mr, bool create)
48 STORE *store = jcr->store;
50 mr->PoolId = jcr->PoolId;
51 bstrncpy(mr->MediaType, store->media_type, sizeof(mr->MediaType));
52 Dmsg2(120, "CatReq FindMedia: Id=%d, MediaType=%s\n", mr->PoolId, mr->MediaType);
54 * If we are using an Autochanger, restrict Volume
55 * search to the Autochanger on the first pass
57 InChanger = store->autochanger;
59 * Find the Next Volume for Append
63 bstrncpy(mr->VolStatus, "Append", sizeof(mr->VolStatus)); /* want only appendable volumes */
65 * 1. Look for volume with "Append" status.
67 ok = db_find_next_volume(jcr, jcr->db, 1, InChanger, mr);
68 Dmsg2(100, "catreq after find_next_vol ok=%d FW=%d\n", ok, mr->FirstWritten);
71 * 2. Try finding a recycled volume
73 ok = find_recycled_volume(jcr, InChanger, mr);
74 Dmsg2(100, "find_recycled_volume %d FW=%d\n", ok, mr->FirstWritten);
77 * 3. Try recycling any purged volume
79 ok = recycle_oldest_purged_volume(jcr, InChanger, mr);
82 * 4. Try pruning Volumes
85 ok = recycle_oldest_purged_volume(jcr, InChanger, mr);
89 continue; /* retry again accepting any volume */
92 Dmsg2(200, "find_recycled_volume2 %d FW=%d\n", ok, mr->FirstWritten);
95 * 5. Try "creating" a new Volume
97 ok = newVolume(jcr, mr);
103 * Look at more drastic ways to find an Appendable Volume
105 if (!ok && (jcr->pool->purge_oldest_volume ||
106 jcr->pool->recycle_oldest_volume)) {
107 Dmsg2(200, "No next volume found. PurgeOldest=%d\n RecyleOldest=%d",
108 jcr->pool->purge_oldest_volume, jcr->pool->recycle_oldest_volume);
109 /* Find oldest volume to recycle */
110 ok = db_find_next_volume(jcr, jcr->db, -1, InChanger, mr);
111 Dmsg1(400, "Find oldest=%d\n", ok);
114 Dmsg0(400, "Try purge.\n");
116 * 5. Try to purging oldest volume only if not UA calling us.
118 ua = new_ua_context(jcr);
119 if (jcr->pool->purge_oldest_volume && create) {
120 Jmsg(jcr, M_INFO, 0, _("Purging oldest volume \"%s\"\n"), mr->VolumeName);
121 ok = purge_jobs_from_volume(ua, mr);
123 * 5. or try recycling the oldest volume
125 } else if (jcr->pool->recycle_oldest_volume) {
126 Jmsg(jcr, M_INFO, 0, _("Pruning oldest volume \"%s\"\n"), mr->VolumeName);
127 ok = prune_volume(ua, mr);
131 ok = recycle_volume(jcr, mr);
132 Dmsg1(400, "Recycle after purge oldest=%d\n", ok);
137 Dmsg2(100, "VolJobs=%d FirstWritten=%d\n", mr->VolJobs, mr->FirstWritten);
139 /* If we can use the volume, check if it is expired */
140 if (has_volume_expired(jcr, mr)) {
141 if (retry++ < 200) { /* sanity check */
142 continue; /* try again from the top */
144 Jmsg(jcr, M_ERROR, 0, _(
145 "We seem to be looping trying to find the next volume. I give up.\n"));
156 * Check if any time limits or use limits have expired
157 * if so, set the VolStatus appropriately.
159 bool has_volume_expired(JCR *jcr, MEDIA_DBR *mr)
161 bool expired = false;
163 * Check limits and expirations if "Append" and it has been used
164 * i.e. mr->VolJobs > 0
167 if (strcmp(mr->VolStatus, "Append") == 0 && mr->VolJobs > 0) {
168 /* First handle Max Volume Bytes */
169 if ((mr->MaxVolBytes > 0 && mr->VolBytes >= mr->MaxVolBytes)) {
170 Jmsg(jcr, M_INFO, 0, _("Max Volume bytes exceeded. "
171 "Marking Volume \"%s\" as Full.\n"), mr->VolumeName);
172 bstrncpy(mr->VolStatus, "Full", sizeof(mr->VolStatus));
175 /* Now see if Volume should only be used once */
176 } else if (mr->VolBytes > 0 && jcr->pool->use_volume_once) {
177 Jmsg(jcr, M_INFO, 0, _("Volume used once. "
178 "Marking Volume \"%s\" as Used.\n"), mr->VolumeName);
179 bstrncpy(mr->VolStatus, "Used", sizeof(mr->VolStatus));
182 /* Now see if Max Jobs written to volume */
183 } else if (mr->MaxVolJobs > 0 && mr->MaxVolJobs <= mr->VolJobs) {
184 Jmsg(jcr, M_INFO, 0, _("Max Volume jobs exceeded. "
185 "Marking Volume \"%s\" as Used.\n"), mr->VolumeName);
186 bstrncpy(mr->VolStatus, "Used", sizeof(mr->VolStatus));
189 /* Now see if Max Files written to volume */
190 } else if (mr->MaxVolFiles > 0 && mr->MaxVolFiles <= mr->VolFiles) {
191 Jmsg(jcr, M_INFO, 0, _("Max Volume files exceeded. "
192 "Marking Volume \"%s\" as Used.\n"), mr->VolumeName);
193 bstrncpy(mr->VolStatus, "Used", sizeof(mr->VolStatus));
196 /* Finally, check Use duration expiration */
197 } else if (mr->VolUseDuration > 0) {
198 utime_t now = time(NULL);
199 /* See if Vol Use has expired */
200 if (mr->VolUseDuration <= (now - mr->FirstWritten)) {
201 Jmsg(jcr, M_INFO, 0, _("Max configured use duration exceeded. "
202 "Marking Volume \"%s\" as Used.\n"), mr->VolumeName);
203 bstrncpy(mr->VolStatus, "Used", sizeof(mr->VolStatus));
209 /* Need to update media */
210 if (!db_update_media_record(jcr, jcr->db, mr)) {
211 Jmsg(jcr, M_ERROR, 0, _("Catalog error updating volume \"%s\". ERR=%s"),
212 mr->VolumeName, db_strerror(jcr->db));
219 * Try hard to recycle the current volume
221 * Returns: on failure - reason = NULL
222 * on success - reason - pointer to reason
224 void check_if_volume_valid_or_recyclable(JCR *jcr, MEDIA_DBR *mr, const char **reason)
230 /* Check if a duration or limit has expired */
231 if (has_volume_expired(jcr, mr)) {
232 *reason = "volume has expired";
233 /* Keep going because we may be able to recycle volume */
237 * Now see if we can use the volume as is
239 if (strcmp(mr->VolStatus, "Append") == 0 ||
240 strcmp(mr->VolStatus, "Recycle") == 0) {
246 * Check if the Volume is already marked for recycling
248 if (strcmp(mr->VolStatus, "Purged") == 0) {
249 if (recycle_volume(jcr, mr)) {
250 Jmsg(jcr, M_INFO, 0, "Recycled current volume \"%s\"\n", mr->VolumeName);
254 /* In principle this shouldn't happen */
255 *reason = "and recycling of current volume failed";
260 /* At this point, the volume is not valid for writing */
261 *reason = "but should be Append, Purged or Recycle";
264 * What we're trying to do here is see if the current volume is
265 * "recyclable" - ie. if we prune all expired jobs off it, is
266 * it now possible to reuse it for the job that it is currently
269 if ((mr->LastWritten + mr->VolRetention) < (utime_t)time(NULL)
270 && mr->Recycle && jcr->pool->recycle_current_volume
271 && (strcmp(mr->VolStatus, "Full") == 0 ||
272 strcmp(mr->VolStatus, "Used") == 0)) {
274 * Attempt prune of current volume to see if we can
275 * recycle it for use.
279 ua = new_ua_context(jcr);
280 ok = prune_volume(ua, mr);
284 /* If fully purged, recycle current volume */
285 if (recycle_volume(jcr, mr)) {
286 Jmsg(jcr, M_INFO, 0, "Recycled current volume \"%s\"\n", mr->VolumeName);
289 *reason = "but should be Append, Purged or Recycle (recycling of the "
290 "current volume failed)";
293 *reason = "but should be Append, Purged or Recycle (cannot automatically "
294 "recycle current volume, as it still contains unpruned data)";