* Version $Id$
*/
/*
- Copyright (C) 2002-2006 Kern Sibbald
+ Bacula® - The Network Backup Solution
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- version 2 as amended with additional clauses defined in the
- file LICENSE in the main source directory.
+ Copyright (C) 2002-2007 Free Software Foundation Europe e.V.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- the file LICENSE for additional details.
+ The main author of Bacula is Kern Sibbald, with contributions from
+ many others, a complete list can be found in the file AUTHORS.
+ This program is Free Software; you can redistribute it and/or
+ modify it under the terms of version two of the GNU General Public
+ License as published by the Free Software Foundation plus additions
+ that are listed in the file LICENSE.
- */
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
-#include "bacula.h" /* pull in global headers */
-#include "stored.h" /* pull in Storage Deamon headers */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
-/*
- * Create a new Device Control Record and attach
- * it to the device (if this is a real job).
- */
-DCR *new_dcr(JCR *jcr, DEVICE *dev)
-{
- DCR *dcr = (DCR *)malloc(sizeof(DCR));
- memset(dcr, 0, sizeof(DCR));
- dcr->jcr = jcr;
- if (dev) {
- dcr->dev = dev;
- dcr->device = dev->device;
- dcr->block = new_block(dev);
- dcr->rec = new_record();
- dcr->max_job_spool_size = dev->device->max_job_spool_size;
- /* Attach this dcr only if dev is initialized */
- if (dev->fd != 0 && jcr && jcr->JobType != JT_SYSTEM) {
- dev->attached_dcrs->append(dcr); /* attach dcr to device */
-// jcr->dcrs->append(dcr); /* put dcr in list for Job */
- }
- }
- dcr->spool_fd = -1;
- return dcr;
-}
+ Bacula® is a registered trademark of John Walker.
+ The licensor of Bacula is the Free Software Foundation Europe
+ (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
+ Switzerland, email:ftf@fsfeurope.org.
+*/
-/*
- * Search the dcrs list for the given dcr. If it is found,
- * as it should be, then remove it. Also zap the jcr pointer
- * to the dcr if it is the same one.
- */
-#ifdef needed
-static void remove_dcr_from_dcrs(DCR *dcr)
-{
- JCR *jcr = dcr->jcr;
- if (jcr->dcrs) {
- int i = 0;
- DCR *ldcr;
- int num = jcr->dcrs->size();
- for (i=0; i < num; i++) {
- ldcr = (DCR *)jcr->dcrs->get(i);
- if (ldcr == dcr) {
- jcr->dcrs->remove(i);
- if (jcr->dcr == dcr) {
- jcr->dcr = NULL;
- }
- }
- }
- }
-}
-#endif
-
-/*
- * Free up all aspects of the given dcr -- i.e. dechain it,
- * release allocated memory, zap pointers, ...
- */
-void free_dcr(DCR *dcr)
-{
- JCR *jcr = dcr->jcr;
- DEVICE *dev = dcr->dev;
+#include "bacula.h" /* pull in global headers */
+#include "stored.h" /* pull in Storage Deamon headers */
- if (dcr->reserved_device) {
- lock_device(dev);
- dev->reserved_device--;
- /* If we set read mode in reserving, remove it */
- if (dev->can_read()) {
- dev->clear_read();
- }
- Dmsg1(100, "Dec reserve=%d\n", dev->reserved_device);
- dcr->reserved_device = false;
- if (dev->num_writers < 0) {
- Jmsg1(dcr->jcr, M_ERROR, 0, _("Hey! num_writers=%d!!!!\n"), dev->num_writers);
- dev->num_writers = 0;
- }
- unlock_device(dev);
- }
+/* Forward referenced functions */
+static void attach_dcr_to_dev(DCR *dcr);
- /* Detach this dcr only if the dev is initialized */
- if (dev->fd != 0 && jcr && jcr->JobType != JT_SYSTEM) {
- dev->attached_dcrs->remove(dcr); /* detach dcr from device */
-// remove_dcr_from_dcrs(dcr); /* remove dcr from jcr list */
- }
- if (dcr->block) {
- free_block(dcr->block);
- }
- if (dcr->rec) {
- free_record(dcr->rec);
- }
- if (dcr->jcr) {
- dcr->jcr->dcr = NULL;
- }
- free_unused_volume(dcr); /* free unused vols attached to this dcr */
- free(dcr);
- pthread_cond_broadcast(&dev->wait_next_vol);
- pthread_cond_broadcast(&wait_device_release);
-}
/*********************************************************************
* Acquire device for reading.
* Returns: NULL if failed for any reason
* dcr if successful
*/
-DCR *acquire_device_for_read(DCR *dcr)
+bool acquire_device_for_read(DCR *dcr)
{
DEVICE *dev = dcr->dev;
JCR *jcr = dcr->jcr;
- bool vol_ok = false;
+ bool ok = false;
bool tape_previously_mounted;
bool tape_initially_mounted;
VOL_LIST *vol;
bool try_autochanger = true;
int i;
int vol_label_status;
+ int retry = 0;
+ Dmsg1(50, "jcr->dcr=%p\n", jcr->dcr);
dev->block(BST_DOING_ACQUIRE);
if (dev->num_writers > 0) {
- Jmsg2(jcr, M_FATAL, 0, _("Num_writers=%d not zero. Job %d canceled.\n"),
+ Jmsg2(jcr, M_FATAL, 0, _("Acquire read: num_writers=%d not zero. Job %d canceled.\n"),
dev->num_writers, jcr->JobId);
goto get_out;
}
/* Find next Volume, if any */
vol = jcr->VolList;
if (!vol) {
- Jmsg(jcr, M_FATAL, 0, _("No volumes specified. Job %d canceled.\n"), jcr->JobId);
+ char ed1[50];
+ Jmsg(jcr, M_FATAL, 0, _("No volumes specified for reading. Job %s canceled.\n"),
+ edit_int64(jcr->JobId, ed1));
goto get_out;
}
- jcr->CurVolume++;
- for (i=1; i<jcr->CurVolume; i++) {
+ jcr->CurReadVolume++;
+ for (i=1; i<jcr->CurReadVolume; i++) {
vol = vol->next;
}
if (!vol) {
+ Jmsg(jcr, M_FATAL, 0, _("Logic error: no next volume to read. Numvol=%d Curvol=%d\n"),
+ jcr->NumReadVolumes, jcr->CurReadVolume);
goto get_out; /* should not happen */
}
bstrncpy(dcr->VolumeName, vol->VolumeName, sizeof(dcr->VolumeName));
+ bstrncpy(dcr->media_type, vol->MediaType, sizeof(dcr->media_type));
+ dcr->VolCatInfo.Slot = vol->Slot;
+
+ /*
+ * If the MediaType requested for this volume is not the
+ * same as the current drive, we attempt to find the same
+ * device that was used to write the orginal volume. If
+ * found, we switch to using that device.
+ */
+ Dmsg2(100, "MediaType dcr=%s dev=%s\n", dcr->media_type, dev->device->media_type);
+ if (dcr->media_type[0] && strcmp(dcr->media_type, dev->device->media_type) != 0) {
+ RCTX rctx;
+ DIRSTORE *store;
+ int stat;
+ DCR *dcr_save = jcr->dcr;
+
+ lock_reservations();
+ jcr->dcr = NULL;
+ memset(&rctx, 0, sizeof(RCTX));
+ rctx.jcr = jcr;
+ jcr->reserve_msgs = New(alist(10, not_owned_by_alist));
+ rctx.any_drive = true;
+ rctx.device_name = vol->device;
+ store = new DIRSTORE;
+ memset(store, 0, sizeof(DIRSTORE));
+ store->name[0] = 0; /* No dir name */
+ bstrncpy(store->media_type, vol->MediaType, sizeof(store->media_type));
+ bstrncpy(store->pool_name, dcr->pool_name, sizeof(store->pool_name));
+ bstrncpy(store->pool_type, dcr->pool_type, sizeof(store->pool_type));
+ store->append = false;
+ rctx.store = store;
+
+ /*
+ * Note, if search_for_device() succeeds, we get a new_dcr,
+ * which we do not use except for the dev info.
+ */
+ stat = search_res_for_device(rctx);
+ release_msgs(jcr); /* release queued messages */
+ unlock_reservations();
+ if (stat == 1) {
+ DCR *new_dcr = jcr->read_dcr;
+ dev->unblock();
+ detach_dcr_from_dev(dcr); /* release old device */
+ /* Copy important info from the new dcr */
+ dev = dcr->dev = new_dcr->dev;
+ jcr->read_dcr = dcr;
+ dcr->device = new_dcr->device;
+ dcr->max_job_spool_size = dcr->device->max_job_spool_size;
+ attach_dcr_to_dev(dcr);
+ new_dcr->VolumeName[0] = 0;
+ free_dcr(new_dcr);
+ dev->block(BST_DOING_ACQUIRE);
+ Jmsg(jcr, M_INFO, 0, _("Media Type change. New device %s chosen.\n"),
+ dev->print_name());
+ bstrncpy(dcr->VolumeName, vol->VolumeName, sizeof(dcr->VolumeName));
+ bstrncpy(dcr->media_type, vol->MediaType, sizeof(dcr->media_type));
+ dcr->VolCatInfo.Slot = vol->Slot;
+ bstrncpy(dcr->pool_name, store->pool_name, sizeof(dcr->pool_name));
+ bstrncpy(dcr->pool_type, store->pool_type, sizeof(dcr->pool_type));
+ } else if (stat == 0) { /* device busy */
+ Pmsg1(000, "Device %s is busy.\n", vol->device);
+ } else {
+ /* error */
+ Jmsg1(jcr, M_FATAL, 0, _("No suitable device found to read Volume \"%s\"\n"),
+ vol->VolumeName);
+ jcr->dcr = dcr_save;
+ goto get_out;
+ }
+ jcr->dcr = dcr_save;
+ }
+
init_device_wait_timers(dcr);
Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
}
- for (i=0; i<5; i++) {
+ for ( ;; ) {
+ /* If not polling limit retries */
+ if (!dev->poll && retry++ > 10) {
+ break;
+ }
dev->clear_labeled(); /* force reread of label */
if (job_canceled(jcr)) {
- Mmsg1(dev->errmsg, _("Job %d canceled.\n"), jcr->JobId);
+ char ed1[50];
+ Mmsg1(dev->errmsg, _("Job %s canceled.\n"), edit_int64(jcr->JobId, ed1));
+ Jmsg(jcr, M_INFO, 0, dev->errmsg);
goto get_out; /* error return */
}
+
+ autoload_device(dcr, 0, NULL);
+
/*
* This code ensures that the device is ready for
* reading. If it is a file, it opens it.
*/
Dmsg1(100, "bstored: open vol=%s\n", dcr->VolumeName);
if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
- if (dev->dev_errno == EIO) { /* no tape loaded */
- Jmsg3(jcr, M_WARNING, 0, _("Open device %s Volume \"%s\" failed (EIO): ERR=%s\n"),
- dev->print_name(), dcr->VolumeName, strerror_dev(dev));
- goto default_path;
- }
-
- Jmsg3(jcr, M_FATAL, 0, _("Open device %s Volume \"%s\" failed: ERR=%s\n"),
- dev->print_name(), dcr->VolumeName, strerror_dev(dev));
- goto get_out;
+ Jmsg3(jcr, M_WARNING, 0, _("Read open device %s Volume \"%s\" failed: ERR=%s\n"),
+ dev->print_name(), dcr->VolumeName, dev->bstrerror());
+ goto default_path;
}
Dmsg1(100, "opened dev %s OK\n", dev->print_name());
vol_label_status = read_dev_volume_label(dcr);
switch (vol_label_status) {
case VOL_OK:
- vol_ok = true;
+ ok = true;
memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
break; /* got it */
case VOL_IO_ERROR:
tape_initially_mounted = false;
goto default_path;
}
+ /* If polling and got a previous bad name, ignore it */
+ if (dev->poll && strcmp(dev->BadVolName, dev->VolHdr.VolumeName) == 0) {
+ goto default_path;
+ } else {
+ bstrncpy(dev->BadVolName, dev->VolHdr.VolumeName, sizeof(dev->BadVolName));
+ }
/* Fall through */
default:
Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
} /* end switch */
break;
} /* end for loop */
- if (!vol_ok) {
- Jmsg1(jcr, M_FATAL, 0, _("Too many errors trying to mount device %s.\n"),
+ if (!ok) {
+ Jmsg1(jcr, M_FATAL, 0, _("Too many errors trying to mount device %s for reading.\n"),
dev->print_name());
goto get_out;
}
dcr->VolumeName, dev->print_name());
get_out:
- dev->unblock();
- if (!vol_ok) {
- dcr = NULL;
+ P(dev->mutex);
+ if (dcr->reserved_device) {
+ dev->reserved_device--;
+ Dmsg2(100, "Dec reserve=%d dev=%s\n", dev->reserved_device, dev->print_name());
+ dcr->reserved_device = false;
}
- return dcr;
+ V(dev->mutex);
+ dev->unblock();
+ Dmsg1(50, "jcr->dcr=%p\n", jcr->dcr);
+ return ok;
}
* With the reservation system, this should not happen
*/
if (dev->can_read()) {
- Jmsg1(jcr, M_FATAL, 0, _("Device %s is busy reading.\n"), dev->print_name());
- Dmsg1(200, "Device %s is busy reading.\n", dev->print_name());
+ Jmsg1(jcr, M_FATAL, 0, _("Want to append, but device %s is busy reading.\n"), dev->print_name());
+ Dmsg1(200, "Want to append but device %s is busy reading.\n", dev->print_name());
goto get_out;
}
free_unused_volume(dcr);
}
if (dev->num_writers != 0) {
- Jmsg3(jcr, M_FATAL, 0, _("Wanted Volume \"%s\", but device %s is busy writing on \"%s\" .\n"),
+ Jmsg3(jcr, M_FATAL, 0, _("Wanted to append to Volume \"%s\", but device %s is busy writing on \"%s\" .\n"),
dcr->VolumeName, dev->print_name(), dev->VolHdr.VolumeName);
- Dmsg3(200, "Wanted Volume \"%s\", but device %s is busy writing on \"%s\" .\n",
+ Dmsg3(200, "Wanted to append to Volume \"%s\", but device %s is busy writing on \"%s\" .\n",
dcr->VolumeName, dev->print_name(), dev->VolHdr.VolumeName);
goto get_out;
}
}
goto get_out;
}
+ Dmsg2(190, "Output pos=%u:%u\n", dcr->dev->file, dcr->dev->block_num);
}
dev->num_writers++; /* we are now a writer */
- if (jcr->NumVolumes == 0) {
- jcr->NumVolumes = 1;
+ if (jcr->NumWriteVolumes == 0) {
+ jcr->NumWriteVolumes = 1;
}
+ dev->VolCatInfo.VolCatJobs++; /* increment number of jobs on vol */
+ dir_update_volume_info(dcr, false); /* send Volume info to Director */
P(dev->mutex);
if (dcr->reserved_device) {
dev->reserved_device--;
- Dmsg1(100, "Dec reserve=%d\n", dev->reserved_device);
+ Dmsg2(100, "Dec reserve=%d dev=%s\n", dev->reserved_device, dev->print_name());
dcr->reserved_device = false;
}
V(dev->mutex);
P(dev->mutex);
if (dcr->reserved_device) {
dev->reserved_device--;
- Dmsg1(100, "Dec reserve=%d\n", dev->reserved_device);
+ Dmsg2(100, "Dec reserve=%d dev=%s\n", dev->reserved_device, dev->print_name());
dcr->reserved_device = false;
}
V(dev->mutex);
- free_dcr(dcr);
dev->unblock();
return NULL;
}
+
/*
* This job is done, so release the device. From a Unix standpoint,
* the device remains open.
*
+ * Note, if we are spooling, we may enter with the device locked.
+ * However, in all cases, unlock the device when leaving.
+ *
*/
bool release_device(DCR *dcr)
{
JCR *jcr = dcr->jcr;
DEVICE *dev = dcr->dev;
bool ok = true;
- bool was_reading = false;
- lock_device(dev);
- Dmsg1(100, "release_device device is %s\n", dev->is_tape()?"tape":"disk");
+ /* lock only if not already locked by this thread */
+ if (!dcr->dev_locked) {
+ lock_device(dev);
+ }
+ Dmsg2(100, "release_device device %s is %s\n", dev->print_name(), dev->is_tape()?"tape":"disk");
/* if device is reserved, job never started, so release the reserve here */
if (dcr->reserved_device) {
dev->reserved_device--;
- Dmsg1(100, "Dec reserve=%d\n", dev->reserved_device);
+ Dmsg2(100, "Dec reserve=%d dev=%s\n", dev->reserved_device, dev->print_name());
dcr->reserved_device = false;
}
if (dev->can_read()) {
dev->clear_read(); /* clear read bit */
- was_reading = true;
/******FIXME**** send read volume usage statistics to director */
dcr->VolCatInfo.VolCatName, jcr->Job);
}
/* If no more writers, write an EOF */
- if (!dev->num_writers && dev->can_write()) {
- weof_dev(dev, 1);
+ if (!dev->num_writers && dev->can_write() && dev->block_num > 0) {
+ dev->weof(1);
write_ansi_ibm_labels(dcr, ANSI_EOF_LABEL, dev->VolHdr.VolumeName);
}
if (!dev->at_weot()) {
dev->VolCatInfo.VolCatFiles = dev->file; /* set number of files */
- dev->VolCatInfo.VolCatJobs++; /* increment number of jobs */
/* Note! do volume update before close, which zaps VolCatInfo */
Dmsg0(100, "dir_update_vol_info. Release0\n");
dir_update_volume_info(dcr, false); /* send Volume info to Director */
}
/* If no writers, close if file or !CAP_ALWAYS_OPEN */
- if (dev->num_writers == 0 && (!dev->is_tape() || !dev_cap(dev, CAP_ALWAYSOPEN))) {
+ if (dev->num_writers == 0 && (!dev->is_tape() || !dev->has_cap(CAP_ALWAYSOPEN))) {
+ dvd_remove_empty_part(dcr); /* get rid of any empty spool part */
dev->close();
}
Dmsg1(400, "alert status=%d\n", status);
free_pool_memory(alert);
}
+ dcr->dev_locked = false; /* set no longer locked */
unlock_device(dev);
- free_dcr(dcr);
- if (was_reading) {
+ if (jcr->read_dcr == dcr) {
jcr->read_dcr = NULL;
- } else {
+ }
+ if (jcr->dcr == dcr) {
jcr->dcr = NULL;
}
+ free_dcr(dcr);
return ok;
}
+
+/*
+ * Create a new Device Control Record and attach
+ * it to the device (if this is a real job).
+ */
+DCR *new_dcr(JCR *jcr, DEVICE *dev)
+{
+ DCR *dcr = (DCR *)malloc(sizeof(DCR));
+ memset(dcr, 0, sizeof(DCR));
+ dcr->jcr = jcr;
+ if (dev) {
+ dcr->dev = dev;
+ dcr->device = dev->device;
+ dcr->block = new_block(dev);
+ dcr->rec = new_record();
+ dcr->max_job_spool_size = dev->device->max_job_spool_size;
+ attach_dcr_to_dev(dcr);
+ }
+ dcr->spool_fd = -1;
+ return dcr;
+}
+
+/*
+ * Search the dcrs list for the given dcr. If it is found,
+ * as it should be, then remove it. Also zap the jcr pointer
+ * to the dcr if it is the same one.
+ */
+#ifdef needed
+static void remove_dcr_from_dcrs(DCR *dcr)
+{
+ JCR *jcr = dcr->jcr;
+ if (jcr->dcrs) {
+ int i = 0;
+ DCR *ldcr;
+ int num = jcr->dcrs->size();
+ for (i=0; i < num; i++) {
+ ldcr = (DCR *)jcr->dcrs->get(i);
+ if (ldcr == dcr) {
+ jcr->dcrs->remove(i);
+ if (jcr->dcr == dcr) {
+ jcr->dcr = NULL;
+ }
+ }
+ }
+ }
+}
+#endif
+
+static void attach_dcr_to_dev(DCR *dcr)
+{
+ DEVICE *dev = dcr->dev;
+ JCR *jcr = dcr->jcr;
+
+ if (!dcr->attached_to_dev && dev->is_open() && jcr && jcr->JobType != JT_SYSTEM) {
+ dev->attached_dcrs->append(dcr); /* attach dcr to device */
+ dcr->attached_to_dev = true;
+ }
+}
+
+void detach_dcr_from_dev(DCR *dcr)
+{
+ DEVICE *dev = dcr->dev;
+
+ if (dcr->reserved_device) {
+ dcr->reserved_device = false;
+ lock_device(dev);
+ dev->reserved_device--;
+ Dmsg2(100, "Dec reserve=%d dev=%s\n", dev->reserved_device, dev->print_name());
+ dcr->reserved_device = false;
+ /* If we set read mode in reserving, remove it */
+ if (dev->can_read()) {
+ dev->clear_read();
+ }
+ if (dev->num_writers < 0) {
+ Jmsg1(dcr->jcr, M_ERROR, 0, _("Hey! num_writers=%d!!!!\n"), dev->num_writers);
+ dev->num_writers = 0;
+ }
+ unlock_device(dev);
+ }
+
+ /* Detach this dcr only if attached */
+ if (dcr->attached_to_dev) {
+ dcr->dev->attached_dcrs->remove(dcr); /* detach dcr from device */
+ dcr->attached_to_dev = false;
+// remove_dcr_from_dcrs(dcr); /* remove dcr from jcr list */
+ }
+ free_unused_volume(dcr); /* free unused vols attached to this dcr */
+ pthread_cond_broadcast(&dcr->dev->wait_next_vol);
+ pthread_cond_broadcast(&wait_device_release);
+}
+
+/*
+ * Free up all aspects of the given dcr -- i.e. dechain it,
+ * release allocated memory, zap pointers, ...
+ */
+void free_dcr(DCR *dcr)
+{
+ JCR *jcr = dcr->jcr;
+
+ if (dcr->dev) {
+ detach_dcr_from_dev(dcr);
+ }
+
+ if (dcr->block) {
+ free_block(dcr->block);
+ }
+ if (dcr->rec) {
+ free_record(dcr->rec);
+ }
+ if (jcr && jcr->dcr == dcr) {
+ jcr->dcr = NULL;
+ }
+ free(dcr);
+}
projects / bacula / bacula / blobdiff