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) 2001-2005 Kern Sibbald
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,
36 * mr.PoolId must be set
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 bstrncpy(mr->MediaType, store->media_type, sizeof(mr->MediaType));
51 Dmsg2(100, "CatReq FindMedia: Id=%d, MediaType=%s\n", (int)mr->PoolId, mr->MediaType);
53 * If we are using an Autochanger, restrict Volume
54 * search to the Autochanger on the first pass
56 InChanger = store->autochanger;
58 * Find the Next Volume for Append
62 bstrncpy(mr->VolStatus, "Append", sizeof(mr->VolStatus)); /* want only appendable volumes */
64 * 1. Look for volume with "Append" status.
66 ok = db_find_next_volume(jcr, jcr->db, 1, InChanger, mr);
67 Dmsg2(100, "catreq after find_next_vol ok=%d FW=%d\n", ok, mr->FirstWritten);
70 * 2. Try finding a recycled volume
72 ok = find_recycled_volume(jcr, InChanger, mr);
73 Dmsg2(100, "find_recycled_volume %d FW=%d\n", ok, mr->FirstWritten);
76 * 3. Try recycling any purged volume
78 ok = recycle_oldest_purged_volume(jcr, InChanger, mr);
81 * 4. Try pruning Volumes
84 ok = recycle_oldest_purged_volume(jcr, InChanger, mr);
88 continue; /* retry again accepting any volume */
91 Dmsg2(200, "find_recycled_volume2 %d FW=%d\n", ok, mr->FirstWritten);
94 * 5. Try "creating" a new Volume
96 ok = newVolume(jcr, mr);
105 char ed1[50], ed2[50];
107 * 6. Try pulling a volume from the Scratch pool
109 memset(&pr, 0, sizeof(pr));
110 bstrncpy(pr.Name, "Scratch", sizeof(pr.Name));
111 if (db_get_pool_record(jcr, jcr->db, &pr)) {
112 memset(&smr, 0, sizeof(smr));
113 smr.PoolId = pr.PoolId;
114 bstrncpy(smr.VolStatus, "Append", sizeof(smr.VolStatus)); /* want only appendable volumes */
115 bstrncpy(smr.MediaType, mr->MediaType, sizeof(smr.MediaType));
116 if (db_find_next_volume(jcr, jcr->db, 1, InChanger, &smr)) {
117 query = get_pool_memory(PM_MESSAGE);
119 Mmsg(query, "UPDATE Media SET PoolId=%s WHERE MediaId=%s",
120 edit_int64(mr->PoolId, ed1),
121 edit_int64(smr.MediaId, ed2));
122 ok = db_sql_query(jcr->db, query, NULL, NULL);
124 /* Set new Pool Id in smr record, then copy it to mr */
125 smr.PoolId = mr->PoolId;
126 memcpy(mr, &smr, sizeof(MEDIA_DBR));
131 * Look at more drastic ways to find an Appendable Volume
133 if (!ok && (jcr->pool->purge_oldest_volume ||
134 jcr->pool->recycle_oldest_volume)) {
135 Dmsg2(200, "No next volume found. PurgeOldest=%d\n RecyleOldest=%d",
136 jcr->pool->purge_oldest_volume, jcr->pool->recycle_oldest_volume);
137 /* Find oldest volume to recycle */
138 ok = db_find_next_volume(jcr, jcr->db, -1, InChanger, mr);
139 Dmsg1(400, "Find oldest=%d\n", ok);
142 Dmsg0(400, "Try purge.\n");
144 * 5. Try to purging oldest volume only if not UA calling us.
146 ua = new_ua_context(jcr);
147 if (jcr->pool->purge_oldest_volume && create) {
148 Jmsg(jcr, M_INFO, 0, _("Purging oldest volume \"%s\"\n"), mr->VolumeName);
149 ok = purge_jobs_from_volume(ua, mr);
151 * 5. or try recycling the oldest volume
153 } else if (jcr->pool->recycle_oldest_volume) {
154 Jmsg(jcr, M_INFO, 0, _("Pruning oldest volume \"%s\"\n"), mr->VolumeName);
155 ok = prune_volume(ua, mr);
159 ok = recycle_volume(jcr, mr);
160 Dmsg1(400, "Recycle after purge oldest=%d\n", ok);
165 Dmsg2(100, "VolJobs=%d FirstWritten=%d\n", mr->VolJobs, mr->FirstWritten);
167 /* If we can use the volume, check if it is expired */
168 if (has_volume_expired(jcr, mr)) {
169 if (retry++ < 200) { /* sanity check */
170 continue; /* try again from the top */
172 Jmsg(jcr, M_ERROR, 0, _(
173 "We seem to be looping trying to find the next volume. I give up.\n"));
184 * Check if any time limits or use limits have expired
185 * if so, set the VolStatus appropriately.
187 bool has_volume_expired(JCR *jcr, MEDIA_DBR *mr)
189 bool expired = false;
191 * Check limits and expirations if "Append" and it has been used
192 * i.e. mr->VolJobs > 0
195 if (strcmp(mr->VolStatus, "Append") == 0 && mr->VolJobs > 0) {
196 /* First handle Max Volume Bytes */
197 if ((mr->MaxVolBytes > 0 && mr->VolBytes >= mr->MaxVolBytes)) {
198 Jmsg(jcr, M_INFO, 0, _("Max Volume bytes exceeded. "
199 "Marking Volume \"%s\" as Full.\n"), mr->VolumeName);
200 bstrncpy(mr->VolStatus, "Full", sizeof(mr->VolStatus));
203 /* Now see if Volume should only be used once */
204 } else if (mr->VolBytes > 0 && jcr->pool->use_volume_once) {
205 Jmsg(jcr, M_INFO, 0, _("Volume used once. "
206 "Marking Volume \"%s\" as Used.\n"), mr->VolumeName);
207 bstrncpy(mr->VolStatus, "Used", sizeof(mr->VolStatus));
210 /* Now see if Max Jobs written to volume */
211 } else if (mr->MaxVolJobs > 0 && mr->MaxVolJobs <= mr->VolJobs) {
212 Jmsg(jcr, M_INFO, 0, _("Max Volume jobs exceeded. "
213 "Marking Volume \"%s\" as Used.\n"), mr->VolumeName);
214 bstrncpy(mr->VolStatus, "Used", sizeof(mr->VolStatus));
217 /* Now see if Max Files written to volume */
218 } else if (mr->MaxVolFiles > 0 && mr->MaxVolFiles <= mr->VolFiles) {
219 Jmsg(jcr, M_INFO, 0, _("Max Volume files exceeded. "
220 "Marking Volume \"%s\" as Used.\n"), mr->VolumeName);
221 bstrncpy(mr->VolStatus, "Used", sizeof(mr->VolStatus));
224 /* Finally, check Use duration expiration */
225 } else if (mr->VolUseDuration > 0) {
226 utime_t now = time(NULL);
227 /* See if Vol Use has expired */
228 if (mr->VolUseDuration <= (now - mr->FirstWritten)) {
229 Jmsg(jcr, M_INFO, 0, _("Max configured use duration exceeded. "
230 "Marking Volume \"%s\" as Used.\n"), mr->VolumeName);
231 bstrncpy(mr->VolStatus, "Used", sizeof(mr->VolStatus));
237 /* Need to update media */
238 if (!db_update_media_record(jcr, jcr->db, mr)) {
239 Jmsg(jcr, M_ERROR, 0, _("Catalog error updating volume \"%s\". ERR=%s"),
240 mr->VolumeName, db_strerror(jcr->db));
247 * Try hard to recycle the current volume
249 * Returns: on failure - reason = NULL
250 * on success - reason - pointer to reason
252 void check_if_volume_valid_or_recyclable(JCR *jcr, MEDIA_DBR *mr, const char **reason)
258 /* Check if a duration or limit has expired */
259 if (has_volume_expired(jcr, mr)) {
260 *reason = "volume has expired";
261 /* Keep going because we may be able to recycle volume */
265 * Now see if we can use the volume as is
267 if (strcmp(mr->VolStatus, "Append") == 0 ||
268 strcmp(mr->VolStatus, "Recycle") == 0) {
274 * Check if the Volume is already marked for recycling
276 if (strcmp(mr->VolStatus, "Purged") == 0) {
277 if (recycle_volume(jcr, mr)) {
278 Jmsg(jcr, M_INFO, 0, "Recycled current volume \"%s\"\n", mr->VolumeName);
282 /* In principle this shouldn't happen */
283 *reason = "and recycling of current volume failed";
288 /* At this point, the volume is not valid for writing */
289 *reason = "but should be Append, Purged or Recycle";
292 * What we're trying to do here is see if the current volume is
293 * "recyclable" - ie. if we prune all expired jobs off it, is
294 * it now possible to reuse it for the job that it is currently
297 if ((mr->LastWritten + mr->VolRetention) < (utime_t)time(NULL)
298 && mr->Recycle && jcr->pool->recycle_current_volume
299 && (strcmp(mr->VolStatus, "Full") == 0 ||
300 strcmp(mr->VolStatus, "Used") == 0)) {
302 * Attempt prune of current volume to see if we can
303 * recycle it for use.
307 ua = new_ua_context(jcr);
308 ok = prune_volume(ua, mr);
312 /* If fully purged, recycle current volume */
313 if (recycle_volume(jcr, mr)) {
314 Jmsg(jcr, M_INFO, 0, "Recycled current volume \"%s\"\n", mr->VolumeName);
317 *reason = "but should be Append, Purged or Recycle (recycling of the "
318 "current volume failed)";
321 *reason = "but should be Append, Purged or Recycle (cannot automatically "
322 "recycle current volume, as it still contains unpruned data)";