/*
Bacula® - The Network Backup Solution
- Copyright (C) 2002-2007 Free Software Foundation Europe e.V.
+ Copyright (C) 2002-2010 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 plus additions
- that are listed in the file LICENSE.
+ modify it under the terms of version three of the GNU Affero 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
+ You should have received a copy of the GNU Affero 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.
+ Bacula® is a registered trademark of Kern Sibbald.
The licensor of Bacula is the Free Software Foundation Europe
(FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
Switzerland, email:ftf@fsfeurope.org.
*
* Kern Sibbald, August MMII
*
- * Version $Id$
*/
#include "bacula.h" /* pull in global headers */
/* Forward referenced functions */
static void attach_dcr_to_dev(DCR *dcr);
+static void detach_dcr_from_dev(DCR *dcr);
+static void set_dcr_from_vol(DCR *dcr, VOL_LIST *vol);
/*********************************************************************
int vol_label_status;
int retry = 0;
- Dmsg1(50, "jcr->dcr=%p\n", jcr->dcr);
- dev->block(BST_DOING_ACQUIRE);
+ Dmsg2(950, "dcr=%p dev=%p\n", dcr, dcr->dev);
+ Dmsg2(950, "MediaType dcr=%s dev=%s\n", dcr->media_type, dev->device->media_type);
+ dev->dblock(BST_DOING_ACQUIRE);
if (dev->num_writers > 0) {
Jmsg2(jcr, M_FATAL, 0, _("Acquire read: num_writers=%d not zero. Job %d canceled.\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;
+ set_dcr_from_vol(dcr, vol);
+
+ Dmsg2(100, "Want Vol=%s Slot=%d\n", vol->VolumeName, 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.
+ *
+ * N.B. A lot of routines rely on the dcr pointer not changing
+ * read_records.c even has multiple dcrs cached, so we take care
+ * here to release all important parts of the dcr and re-acquire
+ * them such as the block pointer (size may change), but we do
+ * not release the dcr.
*/
- 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 read device. Want Media Type=\"%s\" have=\"%s\"\n"
+ " device=%s\n"),
+ dcr->media_type, dev->device->media_type, dev->print_name());
+ Dmsg3(50, "Changing read device. Want Media Type=\"%s\" have=\"%s\"\n"
+ " device=%s\n",
+ dcr->media_type, dev->device->media_type, dev->print_name());
+
+ dev->dunblock(DEV_UNLOCKED);
lock_reservations();
- jcr->dcr = NULL;
memset(&rctx, 0, sizeof(RCTX));
rctx.jcr = jcr;
+ jcr->read_dcr = dcr;
jcr->reserve_msgs = New(alist(10, not_owned_by_alist));
rctx.any_drive = true;
rctx.device_name = vol->device;
bstrncpy(store->pool_type, dcr->pool_type, sizeof(store->pool_type));
store->append = false;
rctx.store = store;
+ clean_device(dcr); /* clean up the dcr */
/*
- * Note, if search_for_device() succeeds, we get a new_dcr,
- * which we do not use except for the dev info.
+ * Search for a new device
*/
stat = search_res_for_device(rctx);
- release_msgs(jcr); /* release queued messages */
+ release_reserve_messages(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 = dcr->dev; /* get new device pointer */
+ dev->dblock(BST_DOING_ACQUIRE);
+ dcr->VolumeName[0] = 0;
+ Jmsg(jcr, M_INFO, 0, _("Media Type change. New read device %s chosen.\n"),
dev->print_name());
+ Dmsg1(50, "Media Type change. New read device %s chosen.\n", dev->print_name());
+
bstrncpy(dcr->VolumeName, vol->VolumeName, sizeof(dcr->VolumeName));
+ dcr->setVolCatName(vol->VolumeName);
bstrncpy(dcr->media_type, vol->MediaType, sizeof(dcr->media_type));
dcr->VolCatInfo.Slot = vol->Slot;
+ dcr->VolCatInfo.InChanger = vol->Slot > 0;
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;
+ Dmsg1(50, "No suitable device found to read Volume \"%s\"\n", vol->VolumeName);
goto get_out;
}
- jcr->dcr = dcr_save;
}
+ Dmsg2(400, "MediaType dcr=%s dev=%s\n", dcr->media_type, dev->device->media_type);
+
+ dev->clear_unload();
+ if (dev->vol && dev->vol->is_swapping()) {
+ dev->vol->set_slot(vol->Slot);
+ Dmsg3(100, "swapping: slot=%d Vol=%s dev=%s\n", dev->vol->get_slot(),
+ dev->vol->vol_name, dev->print_name());
+ }
init_device_wait_timers(dcr);
/* Volume info is always needed because of VolParts */
- Dmsg0(200, "dir_get_volume_info\n");
+ Dmsg1(150, "dir_get_volume_info vol=%s\n", dcr->VolumeName);
if (!dir_get_volume_info(dcr, GET_VOL_INFO_FOR_READ)) {
- Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
+ Dmsg2(150, "dir_get_vol_info failed for vol=%s: %s\n",
+ dcr->VolumeName, jcr->errmsg);
+ Jmsg1(jcr, M_WARNING, 0, "Read acquire: %s", jcr->errmsg);
}
+ dev->set_load(); /* set to load volume */
for ( ;; ) {
/* If not polling limit retries */
goto get_out; /* error return */
}
- autoload_device(dcr, 0, NULL);
+ dcr->do_unload();
+ dcr->do_swapping(false/*!is_writing*/);
+ dcr->do_load(false /*!is_writing*/);
+ set_dcr_from_vol(dcr, vol); /* refresh dcr with desired volume info */
/*
* This code ensures that the device is ready for
*/
Dmsg1(100, "bstored: open vol=%s\n", dcr->VolumeName);
if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
- Jmsg3(jcr, M_WARNING, 0, _("Read open device %s Volume \"%s\" failed: ERR=%s\n"),
- dev->print_name(), dcr->VolumeName, dev->bstrerror());
+ if (!dev->poll) {
+ 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());
+ Dmsg1(50, "opened dev %s OK\n", dev->print_name());
/* Read Volume Label */
-
- Dmsg0(200, "calling read-vol-label\n");
+ Dmsg0(50, "calling read-vol-label\n");
vol_label_status = read_dev_volume_label(dcr);
switch (vol_label_status) {
case VOL_OK:
+ Dmsg0(50, "Got correct volume.\n");
ok = true;
- memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
+ dev->VolCatInfo = dcr->VolCatInfo; /* structure assignment */
break; /* got it */
case VOL_IO_ERROR:
+ Dmsg0(50, "IO Error\n");
/*
* Send error message generated by read_dev_volume_label()
* only we really had a tape mounted. This supresses superfluous
* error messages when nothing is mounted.
*/
if (tape_previously_mounted) {
- Jmsg(jcr, M_WARNING, 0, "%s", jcr->errmsg);
+ Jmsg(jcr, M_WARNING, 0, "Read acquire: %s", jcr->errmsg);
}
goto default_path;
case VOL_NAME_ERROR:
- if (tape_initially_mounted) {
- tape_initially_mounted = false;
+ Dmsg3(50, "Vol name=%s want=%s drv=%s.\n", dev->VolHdr.VolumeName,
+ dcr->VolumeName, dev->print_name());
+ if (dev->is_volume_to_unload()) {
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));
+ dev->set_unload(); /* force unload of unwanted tape */
+ if (!unload_autochanger(dcr, -1)) {
+ /* at least free the device so we can re-open with correct volume */
+ dev->close();
+ free_volume(dev);
}
+ dev->set_load();
/* Fall through */
default:
- Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
+ Jmsg1(jcr, M_WARNING, 0, "Read acquire: %s", jcr->errmsg);
default_path:
+ Dmsg0(50, "default path\n");
tape_previously_mounted = true;
/*
*/
if (dev->requires_mount()) {
dev->close();
+ free_volume(dev);
}
/* Call autochanger only once unless ask_sysop called */
/* Mount a specific volume and no other */
Dmsg0(200, "calling dir_ask_sysop\n");
- if (!dir_ask_sysop_to_mount_volume(dcr)) {
+ if (!dir_ask_sysop_to_mount_volume(dcr, ST_READ)) {
goto get_out; /* error return */
}
- try_autochanger = true; /* permit using autochanger again */
+
+ /* Volume info is always needed because of VolParts */
+ Dmsg1(150, "dir_get_volume_info vol=%s\n", dcr->VolumeName);
+ if (!dir_get_volume_info(dcr, GET_VOL_INFO_FOR_READ)) {
+ Dmsg2(150, "dir_get_vol_info failed for vol=%s: %s\n",
+ dcr->VolumeName, jcr->errmsg);
+ Jmsg1(jcr, M_WARNING, 0, "Read acquire: %s", jcr->errmsg);
+ }
+ dev->set_load(); /* set to load volume */
+
+ try_autochanger = true; /* permit trying the autochanger again */
+
continue; /* try reading again */
} /* end switch */
break;
} /* end for loop */
+
if (!ok) {
Jmsg1(jcr, M_FATAL, 0, _("Too many errors trying to mount device %s for reading.\n"),
dev->print_name());
dcr->VolumeName, dev->print_name());
get_out:
- 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;
+ dev->dlock();
+ dcr->clear_reserved();
+ /*
+ * Normally we are blocked, but in at least one error case above
+ * we are not blocked because we unsuccessfully tried changing
+ * devices.
+ */
+ if (dev->is_blocked()) {
+ dev->dunblock(DEV_LOCKED);
+ } else {
+ dev->dunlock(); /* dunblock() unlock the device too */
}
- V(dev->mutex);
- dev->unblock();
- Dmsg1(50, "jcr->dcr=%p\n", jcr->dcr);
+ Dmsg2(950, "dcr=%p dev=%p\n", dcr, dcr->dev);
+ Dmsg2(950, "MediaType dcr=%s dev=%s\n", dcr->media_type, dev->device->media_type);
return ok;
}
-
/*
* Acquire device for writing. We permit multiple writers.
* If this is the first one, we read the label.
*/
DCR *acquire_device_for_append(DCR *dcr)
{
- bool release = false;
- bool recycle = false;
- bool do_mount = false;
DEVICE *dev = dcr->dev;
JCR *jcr = dcr->jcr;
+ bool ok = false;
+ bool have_vol = false;
init_device_wait_timers(dcr);
- dev->block(BST_DOING_ACQUIRE);
- Dmsg1(190, "acquire_append device is %s\n", dev->is_tape()?"tape":
+ P(dev->acquire_mutex); /* only one job at a time */
+ dev->dlock();
+ Dmsg1(100, "acquire_append device is %s\n", dev->is_tape()?"tape":
(dev->is_dvd()?"DVD":"disk"));
/*
goto get_out;
}
- if (dev->can_append()) {
+ dev->clear_unload();
+
+ /*
+ * have_vol defines whether or not mount_next_write_volume should
+ * ask the Director again about what Volume to use.
+ */
+ if (dev->can_append() && dcr->is_suitable_volume_mounted() &&
+ strcmp(dcr->VolCatInfo.VolCatStatus, "Recycle") != 0) {
Dmsg0(190, "device already in append.\n");
/*
- * Device already in append mode
- *
- * Check if we have the right Volume mounted
- * OK if current volume info OK
- * OK if next volume matches current volume
- * otherwise mount desired volume obtained from
- * dir_find_next_appendable_volume
- * dev->VolHdr.VolumeName is what is in the drive
- * dcr->VolumeName is what we pass into the routines, or
- * get back from the subroutines.
+ * At this point, the correct tape is already mounted, so
+ * we do not need to do mount_next_write_volume(), unless
+ * we need to recycle the tape.
*/
- bstrncpy(dcr->VolumeName, dev->VolHdr.VolumeName, sizeof(dcr->VolumeName));
- if (!dir_get_volume_info(dcr, GET_VOL_INFO_FOR_WRITE) &&
- !(dir_find_next_appendable_volume(dcr) &&
- strcmp(dev->VolHdr.VolumeName, dcr->VolumeName) == 0)) { /* wrong tape mounted */
- Dmsg2(190, "Wrong tape mounted: %s. wants:%s\n", dev->VolHdr.VolumeName,
- dcr->VolumeName);
- /* Release volume reserved by dir_find_next_appendable_volume() */
- if (dcr->VolumeName[0]) {
- free_unused_volume(dcr);
- }
- if (dev->num_writers != 0) {
- 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 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;
- }
- /* Wrong tape mounted, release it, then fall through to get correct one */
- Dmsg0(190, "Wrong tape mounted, release and try mount.\n");
- release = true;
- do_mount = true;
- } else {
- /*
- * At this point, the correct tape is already mounted, so
- * we do not need to do mount_next_write_volume(), unless
- * we need to recycle the tape.
- */
- recycle = strcmp(dcr->VolCatInfo.VolCatStatus, "Recycle") == 0;
- Dmsg1(190, "Correct tape mounted. recycle=%d\n", recycle);
- if (recycle && dev->num_writers != 0) {
- Jmsg(jcr, M_FATAL, 0, _("Cannot recycle volume \"%s\""
- " on device %s because it is in use by another job.\n"),
- dev->VolHdr.VolumeName, dev->print_name());
- goto get_out;
- }
- if (dev->num_writers == 0) {
- memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
- }
- }
- } else {
- /* Not already in append mode, so mount the device */
- Dmsg0(190, "Not in append mode, try mount.\n");
- ASSERT(dev->num_writers == 0);
- do_mount = true;
+ if (dev->num_writers == 0) {
+ dev->VolCatInfo = dcr->VolCatInfo; /* structure assignment */
+ }
+ have_vol = dcr->is_tape_position_ok();
}
- if (do_mount || recycle) {
- Dmsg0(190, "Do mount_next_write_vol\n");
- bool mounted = mount_next_write_volume(dcr, release);
- if (!mounted) {
+ if (!have_vol) {
+ dev->r_dlock(true);
+ block_device(dev, BST_DOING_ACQUIRE);
+ dev->dunlock();
+ Dmsg1(190, "jid=%u Do mount_next_write_vol\n", (uint32_t)jcr->JobId);
+ if (!dcr->mount_next_write_volume()) {
if (!job_canceled(jcr)) {
/* Reduce "noise" -- don't print if job canceled */
Jmsg(jcr, M_FATAL, 0, _("Could not ready device %s for append.\n"),
Dmsg1(200, "Could not ready device %s for append.\n",
dev->print_name());
}
+ dev->dlock();
+ unblock_device(dev);
goto get_out;
}
Dmsg2(190, "Output pos=%u:%u\n", dcr->dev->file, dcr->dev->block_num);
+ dev->dlock();
+ unblock_device(dev);
}
dev->num_writers++; /* we are now a writer */
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--;
- Dmsg2(100, "Dec reserve=%d dev=%s\n", dev->reserved_device, dev->print_name());
- dcr->reserved_device = false;
- }
- V(dev->mutex);
- dev->unblock();
- return dcr;
+ Dmsg4(100, "=== nwriters=%d nres=%d vcatjob=%d dev=%s\n",
+ dev->num_writers, dev->num_reserved(), dev->VolCatInfo.VolCatJobs,
+ dev->print_name());
+ dir_update_volume_info(dcr, false, false); /* send Volume info to Director */
+ ok = true;
-/*
- * Error return
- */
get_out:
- 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;
- }
- V(dev->mutex);
- dev->unblock();
- return NULL;
+ dcr->clear_reserved();
+ dev->dunlock();
+ V(dev->acquire_mutex);
+ return ok ? dcr : 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.
+ * Note, if we were spooling, we may enter with the device blocked.
+ * We unblock at the end, only if it was us who blocked the
+ * device.
*
*/
bool release_device(DCR *dcr)
JCR *jcr = dcr->jcr;
DEVICE *dev = dcr->dev;
bool ok = true;
+ char tbuf[100];
+ int was_blocked = BST_NOT_BLOCKED;
- /* lock only if not already locked by this thread */
- if (!dcr->dev_locked) {
- lock_device(dev);
+ dev->dlock();
+ if (!dev->is_blocked()) {
+ block_device(dev, BST_RELEASING);
+ } else {
+ was_blocked = dev->blocked();
+ dev->set_blocked(BST_RELEASING);
}
+ lock_volumes();
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--;
- Dmsg2(100, "Dec reserve=%d dev=%s\n", dev->reserved_device, dev->print_name());
- dcr->reserved_device = false;
- }
+ dcr->clear_reserved();
if (dev->can_read()) {
+ VOLUME_CAT_INFO *vol = &dev->VolCatInfo;
dev->clear_read(); /* clear read bit */
- Dmsg0(100, "dir_update_vol_info. Release0\n");
- dir_update_volume_info(dcr, false); /* send Volume info to Director */
-
+ Dmsg2(150, "dir_update_vol_info. label=%d Vol=%s\n",
+ dev->is_labeled(), vol->VolCatName);
+ if (dev->is_labeled() && vol->VolCatName[0] != 0) {
+ dir_update_volume_info(dcr, false, false); /* send Volume info to Director */
+ remove_read_volume(jcr, dcr->VolumeName);
+ volume_unused(dcr);
+ }
} else if (dev->num_writers > 0) {
/*
* Note if WEOT is set, we are at the end of the tape
dev->num_writers--;
Dmsg1(100, "There are %d writers in release_device\n", dev->num_writers);
if (dev->is_labeled()) {
- Dmsg0(100, "dir_create_jobmedia_record. Release\n");
+ Dmsg2(200, "dir_create_jobmedia. Release vol=%s dev=%s\n",
+ dev->getVolCatName(), dev->print_name());
if (!dev->at_weot() && !dir_create_jobmedia_record(dcr)) {
- Jmsg(jcr, M_FATAL, 0, _("Could not create JobMedia record for Volume=\"%s\" Job=%s\n"),
- dcr->VolCatInfo.VolCatName, jcr->Job);
+ Jmsg2(jcr, M_FATAL, 0, _("Could not create JobMedia record for Volume=\"%s\" Job=%s\n"),
+ dcr->getVolCatName(), jcr->Job);
}
- /* If no more writers, write an EOF */
+ /* If no more writers, and no errors, and wrote something, write an EOF */
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 */
/* 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 */
+ dir_update_volume_info(dcr, false, false); /* send Volume info to Director */
+ Dmsg2(200, "dir_update_vol_info. Release vol=%s dev=%s\n",
+ dev->getVolCatName(), dev->print_name());
+ }
+ if (dev->num_writers == 0) { /* if not being used */
+ volume_unused(dcr); /* we obviously are not using the volume */
}
}
* has failed, since the device is not in read mode and
* there are no writers. It was probably reserved.
*/
+ volume_unused(dcr);
}
+ Dmsg3(100, "%d writers, %d reserve, dev=%s\n", dev->num_writers, dev->num_reserved(),
+ dev->print_name());
/* If no writers, close if file or !CAP_ALWAYS_OPEN */
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();
+ free_volume(dev);
}
/* Fire off Alert command and include any output */
char line[MAXSTRING];
alert = get_pool_memory(PM_FNAME);
alert = edit_device_codes(dcr, alert, dcr->device->alert_command, "");
- bpipe = open_bpipe(alert, 0, "r");
+ /* Wait maximum 5 minutes */
+ bpipe = open_bpipe(alert, 60 * 5, "r");
if (bpipe) {
while (fgets(line, sizeof(line), bpipe->rfd)) {
Jmsg(jcr, M_ALERT, 0, _("Alert: %s"), line);
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);
}
- dcr->dev_locked = false; /* set no longer locked */
- unlock_device(dev);
- if (jcr->read_dcr == dcr) {
- jcr->read_dcr = NULL;
+ pthread_cond_broadcast(&dev->wait_next_vol);
+ Dmsg2(100, "JobId=%u broadcast wait_device_release at %s\n",
+ (uint32_t)jcr->JobId, bstrftimes(tbuf, sizeof(tbuf), (utime_t)time(NULL)));
+ pthread_cond_broadcast(&wait_device_release);
+ unlock_volumes();
+
+ /*
+ * If we are the thread that blocked the device, then unblock it
+ */
+ if (pthread_equal(dev->no_wait_id, pthread_self())) {
+ dev->dunblock(true);
+ } else {
+ /* Otherwise, reset the prior block status and unlock */
+ dev->set_blocked(was_blocked);
+ dev->dunlock();
}
- if (jcr->dcr == dcr) {
- jcr->dcr = NULL;
+
+ if (dcr->keep_dcr) {
+ detach_dcr_from_dev(dcr);
+ } else {
+ free_dcr(dcr);
}
- free_dcr(dcr);
+ Dmsg2(100, "===== Device %s released by JobId=%u\n", dev->print_name(),
+ (uint32_t)jcr->JobId);
+ return ok;
+}
+
+/*
+ * Clean up the device for reuse without freeing the memory
+ */
+bool clean_device(DCR *dcr)
+{
+ bool ok;
+ dcr->keep_dcr = true; /* do not free the dcr */
+ ok = release_device(dcr);
+ dcr->keep_dcr = false;
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) {
+ int errstat;
+ dcr = (DCR *)malloc(sizeof(DCR));
+ memset(dcr, 0, sizeof(DCR));
+ dcr->tid = pthread_self();
+ dcr->spool_fd = -1;
+ if ((errstat = pthread_mutex_init(&dcr->m_mutex, NULL)) != 0) {
+ berrno be;
+ dev->dev_errno = errstat;
+ Mmsg1(dev->errmsg, _("Unable to init mutex: ERR=%s\n"), be.bstrerror(errstat));
+ Jmsg0(jcr, M_ERROR_TERM, 0, dev->errmsg);
+ }
+ }
+ 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();
- dcr->max_job_spool_size = dev->device->max_job_spool_size;
+ if (dcr->attached_to_dev) {
+ detach_dcr_from_dev(dcr);
+ }
+ /* Use job spoolsize prior to device spoolsize */
+ if (jcr->spool_size) {
+ dcr->max_job_spool_size = jcr->spool_size;
+ } else {
+ 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;
}
* 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.
+ *
+ * Note, this code will be turned on when we can write to multiple
+ * dcrs at the same time.
*/
#ifdef needed
static void remove_dcr_from_dcrs(DCR *dcr)
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) {
+ DEVICE *dev;
+ JCR *jcr;
+
+ P(dcr->m_mutex);
+ dev = dcr->dev;
+ jcr = dcr->jcr;
+ if (jcr) Dmsg1(500, "JobId=%u enter attach_dcr_to_dev\n", (uint32_t)jcr->JobId);
+ /* ***FIXME*** return error if dev not initiated */
+ if (!dcr->attached_to_dev && dev->initiated && jcr && jcr->getJobType() != JT_SYSTEM) {
+ dev->dlock();
dev->attached_dcrs->append(dcr); /* attach dcr to device */
+ dev->dunlock();
dcr->attached_to_dev = true;
+ Dmsg1(500, "JobId=%u attach_dcr_to_dev\n", (uint32_t)jcr->JobId);
}
+ V(dcr->m_mutex);
}
-void detach_dcr_from_dev(DCR *dcr)
+/*
+ * DCR is locked before calling this routine
+ */
+static void locked_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);
- }
+ Dmsg0(500, "Enter detach_dcr_from_dev\n"); /* jcr is NULL in some cases */
/* Detach this dcr only if attached */
- if (dcr->attached_to_dev) {
+ if (dcr->attached_to_dev && dev) {
+ dcr->unreserve_device();
+ dev->dlock();
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 */
+ dev->dunlock();
}
- 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);
+ dcr->attached_to_dev = false;
+}
+
+
+static void detach_dcr_from_dev(DCR *dcr)
+{
+ P(dcr->m_mutex);
+ locked_detach_dcr_from_dev(dcr);
+ V(dcr->m_mutex);
}
/*
*/
void free_dcr(DCR *dcr)
{
- JCR *jcr = dcr->jcr;
+ JCR *jcr;
- if (dcr->dev) {
- detach_dcr_from_dev(dcr);
- }
+ P(dcr->m_mutex);
+ jcr = dcr->jcr;
+ locked_detach_dcr_from_dev(dcr);
if (dcr->block) {
free_block(dcr->block);
if (jcr && jcr->dcr == dcr) {
jcr->dcr = NULL;
}
+ if (jcr && jcr->read_dcr == dcr) {
+ jcr->read_dcr = NULL;
+ }
+ V(dcr->m_mutex);
+ pthread_mutex_destroy(&dcr->m_mutex);
free(dcr);
}
+
+static void set_dcr_from_vol(DCR *dcr, VOL_LIST *vol)
+{
+ /*
+ * Note, if we want to be able to work from a .bsr file only
+ * for disaster recovery, we must "simulate" reading the catalog
+ */
+ bstrncpy(dcr->VolumeName, vol->VolumeName, sizeof(dcr->VolumeName));
+ dcr->setVolCatName(vol->VolumeName);
+ bstrncpy(dcr->media_type, vol->MediaType, sizeof(dcr->media_type));
+ dcr->VolCatInfo.Slot = vol->Slot;
+ dcr->VolCatInfo.InChanger = vol->Slot > 0;
+}