2 * Subroutines to handle waiting for operator intervention
3 * or waiting for a Device to be released
5 * Code for wait_for_sysop() pulled from askdir.c
7 * Kern Sibbald, March 2005
12 Copyright (C) 2000-2005 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
16 version 2 as amended with additional clauses defined in the
17 file LICENSE in the main source directory.
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
22 the file LICENSE for additional details.
26 #include "bacula.h" /* pull in global headers */
27 #include "stored.h" /* pull in Storage Deamon headers */
29 //static bool double_jcr_wait_time(JCR *jcr);
33 * Wait for SysOp to mount a tape on a specific device
35 * Returns: status from pthread_cond_timedwait()
37 int wait_for_sysop(DCR *dcr)
41 struct timespec timeout;
42 time_t last_heartbeat = 0;
43 time_t first_start = time(NULL);
47 DEVICE *dev = dcr->dev;
51 Dmsg1(100, "Enter blocked=%s\n", dev->print_blocked());
52 unmounted = is_device_unmounted(dev);
56 * Wait requested time (dev->rem_wait_sec). However, we also wake up every
57 * HB_TIME seconds and send a heartbeat to the FD and the Director
58 * to keep stateful firewalls from closing them down while waiting
61 add_wait = dev->rem_wait_sec;
62 if (me->heartbeat_interval && add_wait > me->heartbeat_interval) {
63 add_wait = me->heartbeat_interval;
65 /* If the user did not unmount the tape and we are polling, ensure
66 * that we poll at the correct interval.
68 if (!unmounted && dev->vol_poll_interval && add_wait > dev->vol_poll_interval) {
69 add_wait = dev->vol_poll_interval;
73 Dmsg1(400, "blocked=%s\n", dev->print_blocked());
74 dev->dev_prev_blocked = dev->dev_blocked;
75 dev->set_blocked(BST_WAITING_FOR_SYSOP); /* indicate waiting for mount */
78 for ( ; !job_canceled(jcr); ) {
81 gettimeofday(&tv, &tz);
82 timeout.tv_nsec = tv.tv_usec * 1000;
83 timeout.tv_sec = tv.tv_sec + add_wait;
85 Dmsg3(400, "I'm going to sleep on device %s. HB=%d wait=%d\n", dev->print_name(),
86 (int)me->heartbeat_interval, dev->wait_sec);
88 /* Wait required time */
89 stat = pthread_cond_timedwait(&dev->wait_next_vol, &dev->mutex, &timeout);
90 Dmsg2(400, "Wokeup from sleep on device stat=%d blocked=%s\n", stat,
91 dev->print_blocked());
94 dev->rem_wait_sec -= (now - start);
96 /* Note, this always triggers the first time. We want that. */
97 if (me->heartbeat_interval) {
98 if (now - last_heartbeat >= me->heartbeat_interval) {
100 if (jcr->file_bsock) {
101 bnet_sig(jcr->file_bsock, BNET_HEARTBEAT);
102 Dmsg0(400, "Send heartbeat to FD.\n");
104 if (jcr->dir_bsock) {
105 bnet_sig(jcr->dir_bsock, BNET_HEARTBEAT);
107 last_heartbeat = now;
112 * Check if user unmounted the device while we were waiting
114 unmounted = is_device_unmounted(dev);
116 if (stat != ETIMEDOUT) { /* we blocked the device */
117 break; /* on error return */
119 if (dev->rem_wait_sec <= 0) { /* on exceeding wait time return */
120 Dmsg0(400, "Exceed wait time.\n");
124 if (!unmounted && dev->vol_poll_interval &&
125 (now - first_start >= dev->vol_poll_interval)) {
126 Dmsg1(400, "In wait blocked=%s\n", dev->print_blocked());
127 dev->poll = true; /* returning a poll event */
131 * Check if user mounted the device while we were waiting
133 if (dev->get_blocked() == BST_MOUNT) { /* mount request ? */
138 add_wait = dev->wait_sec - (now - start);
142 if (me->heartbeat_interval && add_wait > me->heartbeat_interval) {
143 add_wait = me->heartbeat_interval;
148 dev->set_blocked(dev->dev_prev_blocked); /* restore entry state */
149 Dmsg1(400, "set %s\n", dev->print_blocked());
151 Dmsg1(400, "Exit blocked=%s\n", dev->print_blocked());
158 * Wait for any device to be released, then we return, so
159 * higher level code can rescan possible devices.
161 * Returns: true if a device has changed state
162 * false if the total wait time has expired.
164 bool wait_for_device(JCR *jcr, bool first)
168 struct timespec timeout;
171 const int wait_time = 10 * 60; /* wait 10 minutes */
173 Dmsg0(100, "Enter wait_for_device\n");
174 P(device_release_mutex);
177 Jmsg(jcr, M_MOUNT, 0, _("Job %s waiting to reserve a device.\n"), jcr->Job);
180 gettimeofday(&tv, &tz);
181 timeout.tv_nsec = tv.tv_usec * 1000;
182 timeout.tv_sec = tv.tv_sec + wait_time;
184 Dmsg0(100, "I'm going to wait for a device.\n");
186 /* Wait required time */
187 stat = pthread_cond_timedwait(&wait_device_release, &device_release_mutex, &timeout);
188 Dmsg1(100, "Wokeup from sleep on device stat=%d\n", stat);
191 V(device_release_mutex);
192 Dmsg1(100, "Return from wait_device ok=%d\n", ok);
198 * The jcr timers are used for waiting on any device *
199 * Returns: true if time doubled
200 * false if max time expired
202 static bool double_jcr_wait_time(JCR *jcr)
204 jcr->wait_sec *= 2; /* double wait time */
205 if (jcr->wait_sec > jcr->max_wait) { /* but not longer than maxtime */
206 jcr->wait_sec = jcr->max_wait;
209 jcr->rem_wait_sec = jcr->wait_sec;
210 if (jcr->num_wait >= jcr->max_num_wait) {