+/*
+ Bacula® - The Network Backup Solution
+
+ Copyright (C) 2002-2007 Free Software Foundation Europe e.V.
+
+ 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 and included
+ 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.
+
+ 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.
+
+ 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.
+*/
/*
* Routines to acquire and release a device for read/write
*
*
* Version $Id$
*/
-/*
- Copyright (C) 2002-2006 Kern Sibbald
-
- 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.
-
- 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.
-
- */
#include "bacula.h" /* pull in global headers */
#include "stored.h" /* pull in Storage Deamon headers */
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));
* 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);
+ Dmsg2(50, "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;
+ Jmsg3(jcr, M_INFO, 0, _("Changing device. Want Media Type=\"%s\" have=\"%s\"\n"
+ " device=%s\n"),
+ dcr->media_type, dev->device->media_type, dev->print_name());
lock_reservations();
jcr->dcr = NULL;
memset(&rctx, 0, sizeof(RCTX));
rctx.store = store;
/*
- * Note, if search_for_device() succeeds, we get a new_dcr,
+ * 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();
+ DCR *ndcr = jcr->read_dcr;
+ dev->unblock(dev_unlocked);
detach_dcr_from_dev(dcr); /* release old device */
/* Copy important info from the new dcr */
- dev = dcr->dev = new_dcr->dev;
+ dev = dcr->dev = ndcr->dev;
jcr->read_dcr = dcr;
- dcr->device = new_dcr->device;
+ dcr->device = ndcr->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);
+ ndcr->VolumeName[0] = 0;
+ free_dcr(ndcr);
dev->block(BST_DOING_ACQUIRE);
Jmsg(jcr, M_INFO, 0, _("Media Type change. New device %s chosen.\n"),
dev->print_name());
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 */
- Dmsg1(000, "Device %s is busy.\n", vol->device);
+ 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"),
}
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 */
}
break;
} /* end for loop */
if (!ok) {
- Jmsg1(jcr, M_FATAL, 0, _("Too many errors trying to mount device %s.\n"),
+ 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:
- P(dev->mutex);
+ dev->dlock();
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;
}
- V(dev->mutex);
- dev->unblock();
+ dev->unblock(dev_locked);
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;
}
dcr->VolumeName);
/* Release volume reserved by dir_find_next_appendable_volume() */
if (dcr->VolumeName[0]) {
- free_unused_volume(dcr);
+ volume_unused(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;
}
if (dev->num_writers == 0) {
memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
}
+
+ /*
+ * Insanity check
+ *
+ * Check to see if the tape position as defined by the OS is
+ * the same as our concept. If it is not, we bail out, because
+ * it means the user has probably manually rewound the tape.
+ * Note, we check only if num_writers == 0, but this code will
+ * also work fine for any number of writers. If num_writers > 0,
+ * we probably should cancel all jobs using this device, or
+ * perhaps even abort the SD, or at a minimum, mark the tape
+ * in error. Another strategy with num_writers == 0, would be
+ * to rewind the tape and do a new eod() request.
+ */
+ if (dev->is_tape() && dev->num_writers == 0) {
+ int32_t file = dev->get_os_tape_file();
+ if (file >= 0 && file != (int32_t)dev->get_file()) {
+ Jmsg(jcr, M_FATAL, 0, _("Invalid tape position on volume \"%s\""
+ " on device %s. Expected %d, got %d\n"),
+ dev->VolHdr.VolumeName, dev->print_name(), dev->get_file(), file);
+ goto get_out;
+ }
+ }
}
} else {
/* Not already in append mode, so mount the device */
}
dev->num_writers++; /* we are now a writer */
- if (jcr->NumVolumes == 0) {
- jcr->NumVolumes = 1;
+ if (jcr->NumWriteVolumes == 0) {
+ jcr->NumWriteVolumes = 1;
}
- P(dev->mutex);
+ dev->VolCatInfo.VolCatJobs++; /* increment number of jobs on vol */
+ dir_update_volume_info(dcr, false); /* send Volume info to Director */
+ dev->dlock();
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;
}
- V(dev->mutex);
- dev->unblock();
+ dev->unblock(dev_locked);
return dcr;
/*
* Error return
*/
get_out:
- P(dev->mutex);
+ dev->dlock();
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;
}
- V(dev->mutex);
- dev->unblock();
+ dev->unblock(dev_locked);
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)
{
DEVICE *dev = dcr->dev;
bool ok = true;
- lock_device(dev);
+ /* lock only if not already locked by this thread */
+ if (!dcr->dev_locked) {
+ dev->r_dlock();
+ }
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 (dev->can_read()) {
dev->clear_read(); /* clear read bit */
-
- /******FIXME**** send read volume usage statistics to director */
+ Dmsg0(100, "dir_update_vol_info. Release0\n");
+ dir_update_volume_info(dcr, false); /* send Volume info to Director */
} else if (dev->num_writers > 0) {
/*
dcr->VolCatInfo.VolCatName, jcr->Job);
}
/* If no more writers, write an EOF */
- if (!dev->num_writers && dev->can_write()) {
+ 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();
}
if (status != 0) {
berrno be;
Jmsg(jcr, M_ALERT, 0, _("3997 Bad alert command: %s: ERR=%s.\n"),
- alert, be.strerror(status));
+ alert, be.bstrerror(status));
}
Dmsg1(400, "alert status=%d\n", status);
free_pool_memory(alert);
}
- unlock_device(dev);
+ pthread_cond_broadcast(&dev->wait_next_vol);
+ Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)jcr->JobId);
+ pthread_cond_broadcast(&wait_device_release);
+ dcr->dev_locked = false; /* set no longer locked */
+ dev->dunlock();
if (jcr->read_dcr == dcr) {
jcr->read_dcr = NULL;
}
jcr->dcr = NULL;
}
free_dcr(dcr);
+ Dmsg2(100, "===== Device %s released by JobId=%u\n", dev->print_name(),
+ (uint32_t)jcr->JobId);
return ok;
}
/*
* Create a new Device Control Record and attach
* it to the device (if this is a real job).
+ * Note, this has been updated so that it can be called first
+ * without a DEVICE, then a second or third time with a DEVICE,
+ * and each time, it should cleanup and point to the new device.
+ * This should facilitate switching devices.
+ * Note, each dcr must point to the controlling job (jcr). However,
+ * a job can have multiple dcrs, so we must not store in the jcr's
+ * structure as previously. The higher level routine must store
+ * this dcr in the right place
+ *
*/
-DCR *new_dcr(JCR *jcr, DEVICE *dev)
+DCR *new_dcr(JCR *jcr, DCR *dcr, DEVICE *dev)
{
- DCR *dcr = (DCR *)malloc(sizeof(DCR));
- memset(dcr, 0, sizeof(DCR));
- dcr->jcr = jcr;
+ if (!dcr) {
+ dcr = (DCR *)malloc(sizeof(DCR));
+ memset(dcr, 0, sizeof(DCR));
+ dcr->tid = pthread_self();
+ dcr->spool_fd = -1;
+ }
+ dcr->jcr = jcr; /* point back to jcr */
+ /* Set device information, possibly change device */
if (dev) {
- dcr->dev = dev;
- dcr->device = dev->device;
+ if (dcr->block) {
+ free_block(dcr->block);
+ }
dcr->block = new_block(dev);
+ if (dcr->rec) {
+ free_record(dcr->rec);
+ }
dcr->rec = new_record();
+ if (dcr->attached_to_dev) {
+ detach_dcr_from_dev(dcr);
+ }
dcr->max_job_spool_size = dev->device->max_job_spool_size;
+ dcr->device = dev->device;
+ dcr->dev = dev;
attach_dcr_to_dev(dcr);
}
- dcr->spool_fd = -1;
return dcr;
}
DEVICE *dev = dcr->dev;
JCR *jcr = dcr->jcr;
- if (!dcr->attached_to_dev && dev->is_open() && jcr && jcr->JobType != JT_SYSTEM) {
+ if (jcr) Dmsg1(500, "JobId=%u enter attach_dcr_to_dev\n", (uint32_t)jcr->JobId);
+ if (!dcr->attached_to_dev && dev->initiated && jcr && jcr->JobType != JT_SYSTEM) {
dev->attached_dcrs->append(dcr); /* attach dcr to device */
dcr->attached_to_dev = true;
+ Dmsg1(500, "JobId=%u attach_dcr_to_dev\n", (uint32_t)jcr->JobId);
}
}
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);
- }
+ Dmsg1(500, "JobId=%u enter detach_dcr_from_dev\n", (uint32_t)dcr->jcr->JobId);
/* Detach this dcr only if attached */
- if (dcr->attached_to_dev) {
+ if (dcr->attached_to_dev && dcr->dev) {
+ unreserve_device(dcr);
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);
}
/*
*/
void free_dcr(DCR *dcr)
{
+ JCR *jcr = dcr->jcr;
detach_dcr_from_dev(dcr);
if (dcr->rec) {
free_record(dcr->rec);
}
- if (dcr->jcr) {
- dcr->jcr->dcr = NULL;
+ if (jcr && jcr->dcr == dcr) {
+ jcr->dcr = NULL;
}
free(dcr);
}