/*
- * Routines to acquire and release a device for read/write
- *
- * Kern Sibbald, August MMII
- *
- * Version $Id$
- */
-/*
- Copyright (C) 2002-2003 Kern Sibbald and John Walker
+ 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 as
- published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
+ Copyright (C) 2002-2008 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
+ 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., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA.
+ 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
+ *
+ * Kern Sibbald, August MMII
+ *
+ * Version $Id$
*/
#include "bacula.h" /* pull in global headers */
#include "stored.h" /* pull in Storage Deamon headers */
+/* Forward referenced functions */
+static void attach_dcr_to_dev(DCR *dcr);
+
-/*********************************************************************
- * Acquire device for reading. We permit (for the moment)
- * only one reader. We read the Volume label from the block and
+/*********************************************************************
+ * Acquire device for reading.
+ * The drive should have previously been reserved by calling
+ * reserve_device_for_read(). We read the Volume label from the block and
* leave the block pointers just after the label.
*
- * Returns: 0 if failed for any reason
- * 1 if successful
+ * Returns: NULL if failed for any reason
+ * dcr if successful
*/
-int acquire_device_for_read(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
+bool acquire_device_for_read(DCR *dcr)
{
- int stat = 0;
- int tape_previously_mounted;
+ DEVICE *dev = dcr->dev;
+ JCR *jcr = dcr->jcr;
+ 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(950, "jcr->dcr=%p\n", jcr->dcr);
+ dev->dblock(BST_DOING_ACQUIRE);
- lock_device(dev);
- block_device(dev, BST_DOING_ACQUIRE);
- unlock_device(dev);
-
- tape_previously_mounted = (dev->state & ST_READ) || (dev->state & ST_APPEND);
-
- if (dev->state & ST_READ || dev->num_writers > 0) {
- Jmsg1(jcr, M_FATAL, 0, _("Device %s is busy. Job cancelled.\n"), dev_name(dev));
+ if (dev->num_writers > 0) {
+ 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 cancelled.\n"));
+ 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 (int i=1; i<jcr->CurVolume; i++) {
+ jcr->CurReadVolume++;
+ for (i=1; i<jcr->CurReadVolume; i++) {
vol = vol->next;
}
- pm_strcpy(&jcr->VolumeName, vol->VolumeName);
+ 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 */
+ }
+ /*
+ * 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));
+ bstrncpy(dcr->VolCatInfo.VolCatName, vol->VolumeName, sizeof(dcr->VolCatInfo.VolCatName));
+ bstrncpy(dcr->media_type, vol->MediaType, sizeof(dcr->media_type));
+ dcr->VolCatInfo.Slot = vol->Slot;
+ dcr->VolCatInfo.InChanger = vol->Slot > 0;
+
+ /*
+ * 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(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;
+
+ 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());
+ Dmsg3(50, "Changing 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();
+ 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;
+ clean_device(dcr); /* clean up the dcr */
+
+ /*
+ * Search for a new device
+ */
+ stat = search_res_for_device(rctx);
+ release_reserve_messages(jcr); /* release queued messages */
+ unlock_reservations();
+
+ if (stat == 1) {
+ 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 device %s chosen.\n"),
+ dev->print_name());
+ Dmsg1(50, "Media Type change. New device %s chosen.\n", dev->print_name());
- for (;;) {
- if (job_cancelled(jcr)) {
- Mmsg0(&dev->errmsg, _("Job cancelled.\n"));
- goto get_out; /* error return */
+ bstrncpy(dcr->VolumeName, vol->VolumeName, sizeof(dcr->VolumeName));
+ bstrncpy(dcr->VolCatInfo.VolCatName, vol->VolumeName, sizeof(dcr->VolCatInfo.VolCatName));
+ 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 {
+ /* error */
+ Jmsg1(jcr, M_FATAL, 0, _("No suitable device found to read Volume \"%s\"\n"),
+ vol->VolumeName);
+ Dmsg1(50, "No suitable device found to read Volume \"%s\"\n", vol->VolumeName);
+ goto get_out;
}
+ }
+
+ if (reserve_volume(dcr, dcr->VolumeName) == NULL) {
+ Dmsg2(100, "Could not reserve volume %s on %s\n", dcr->VolumeName,
+ dcr->dev->print_name());
+ Jmsg2(jcr, M_FATAL, 0, _("Could not reserve volume %s on %s\n"), dcr->VolumeName,
+ dcr->dev->print_name());
+ goto get_out;
+ }
+ 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);
+
+ tape_previously_mounted = dev->can_read() || dev->can_append() ||
+ dev->is_labeled();
+ tape_initially_mounted = tape_previously_mounted;
+
+
+ /* 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)) {
+ Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
+ }
+ dev->set_load(); /* set to load volume */
+
+ for ( ;; ) {
+ /* If not polling limit retries */
+ if (!dev->poll && retry++ > 10) {
+ break;
+ }
+ dev->clear_labeled(); /* force reread of label */
+ if (job_canceled(jcr)) {
+ 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 */
+ }
+
+ dcr->do_swapping(false/*is_writing*/);
+
/*
* This code ensures that the device is ready for
* reading. If it is a file, it opens it.
- * If it is a tape, it checks the volume name
+ * If it is a tape, it checks the volume name
*/
- for ( ; !(dev->state & ST_OPENED); ) {
- Dmsg1(120, "bstored: open vol=%s\n", jcr->VolumeName);
- if (open_dev(dev, jcr->VolumeName, READ_ONLY) < 0) {
- Jmsg(jcr, M_FATAL, 0, _("Open device %s volume %s failed, ERR=%s\n"),
- dev_name(dev), jcr->VolumeName, strerror_dev(dev));
- goto get_out;
- }
- Dmsg1(129, "open_dev %s OK\n", dev_name(dev));
+ Dmsg1(100, "bstored: open vol=%s\n", dcr->VolumeName);
+ if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
+ 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;
}
- dev->state &= ~ST_LABEL; /* force reread of label */
- Dmsg0(200, "calling read-vol-label\n");
- switch (read_dev_volume_label(jcr, dev, block)) {
- case VOL_OK:
- break; /* got it */
- case VOL_IO_ERROR:
- /*
- * 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) {
- Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
- }
- goto default_path;
- default:
- Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
+ Dmsg1(50, "opened dev %s OK\n", dev->print_name());
+
+ /* Read Volume Label */
+ Dmsg0(50, "calling read-vol-label\n");
+ vol_label_status = read_dev_volume_label(dcr);
+ switch (vol_label_status) {
+ case VOL_OK:
+ ok = true;
+ memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
+ break; /* got it */
+ case VOL_IO_ERROR:
+ /*
+ * 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);
+ }
+ goto default_path;
+ case VOL_NAME_ERROR:
+ if (tape_initially_mounted) {
+ 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));
+ }
+ if (!unload_autochanger(dcr, -1)) {
+ /* at least free the device so we can re-open with correct volume */
+ dev->close();
+ }
+ /* Fall through */
+ default:
+ Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
default_path:
- tape_previously_mounted = 0;
- Dmsg0(200, "dir_get_volume_info\n");
- if (!dir_get_volume_info(jcr, 0)) {
- Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
- }
+ tape_previously_mounted = true;
+
+ /*
+ * If the device requires mount, close it, so the device can be ejected.
+ */
+ if (dev->requires_mount()) {
+ dev->close();
+ }
+
+ /* Call autochanger only once unless ask_sysop called */
+ if (try_autochanger) {
+ int stat;
Dmsg2(200, "calling autoload Vol=%s Slot=%d\n",
- jcr->VolumeName, jcr->VolCatInfo.Slot);
- if (autoload_device(jcr, dev, 0, NULL)) {
- continue;
- }
- /* Mount a specific volume and no other */
- Dmsg0(200, "calling dir_ask_sysop\n");
- if (!dir_ask_sysop_to_mount_volume(jcr, dev)) {
- goto get_out; /* error return */
- }
- continue; /* try reading again */
- }
+ dcr->VolumeName, dcr->VolCatInfo.Slot);
+ stat = autoload_device(dcr, 0, NULL);
+ if (stat > 0) {
+ try_autochanger = false;
+ continue; /* try reading volume mounted */
+ }
+ /* Try closing and re-opening */
+ dev->close();
+ dev->clear_unload();
+ if (dev->open(dcr, OPEN_READ_ONLY) >= 0) {
+ continue;
+ }
+ 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());
+ }
+ }
+
+ /* Mount a specific volume and no other */
+ Dmsg0(200, "calling dir_ask_sysop\n");
+ if (!dir_ask_sysop_to_mount_volume(dcr, ST_READ)) {
+ goto get_out; /* error return */
+ }
+ try_autochanger = true; /* permit using 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());
+ goto get_out;
}
- dev->state |= ST_READ;
- attach_jcr_to_device(dev, jcr); /* attach jcr to device */
- stat = 1; /* good return */
- if ((dev->state & ST_TAPE) && vol->start_file > 0) {
- Dmsg1(200, "====== Got start_file = %d\n", vol->start_file);
- Jmsg(jcr, M_INFO, 0, _("Forward spacing to file %d.\n"), vol->start_file);
- fsf_dev(dev, vol->start_file);
- }
+ dev->clear_append();
+ dev->set_read();
+ set_jcr_job_status(jcr, JS_Running);
+ dir_send_job_status(jcr);
+ Jmsg(jcr, M_INFO, 0, _("Ready to read from volume \"%s\" on device %s.\n"),
+ dcr->VolumeName, dev->print_name());
get_out:
- P(dev->mutex);
- unblock_device(dev);
- V(dev->mutex);
- return stat;
+ 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);
+ }
+ Dmsg1(950, "jcr->dcr=%p\n", jcr->dcr);
+ return ok;
}
+
/*
* Acquire device for writing. We permit multiple writers.
* If this is the first one, we read the label.
*
- * Returns: 0 if failed for any reason
- * 1 if successful
+ * Returns: NULL if failed for any reason
+ * dcr if successful.
+ * Note, normally reserve_device_for_append() is called
+ * before this routine.
*/
-int acquire_device_for_append(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
+DCR *acquire_device_for_append(DCR *dcr)
{
- int release = 0;
- int do_mount = 0;
- int stat = 0;
+ DEVICE *dev = dcr->dev;
+ JCR *jcr = dcr->jcr;
+ bool ok = false;
+ bool have_vol = false;
- lock_device(dev);
- block_device(dev, BST_DOING_ACQUIRE);
- unlock_device(dev);
- Dmsg1(190, "acquire_append device is %s\n", dev_is_tape(dev)?"tape":"disk");
+ init_device_wait_timers(dcr);
+ dev->dblock(BST_DOING_ACQUIRE);
+ Dmsg1(100, "acquire_append device is %s\n", dev->is_tape()?"tape":
+ (dev->is_dvd()?"DVD":"disk"));
- if (dev->state & ST_APPEND) {
- /*
- * 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
+ /*
+ * With the reservation system, this should not happen
+ */
+ if (dev->can_read()) {
+ 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;
+ }
+
+ /*
+ * 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");
+ /*
+ * 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.
*/
- strcpy(jcr->VolumeName, dev->VolHdr.VolName);
- if (!dir_get_volume_info(jcr, 1) ||
- !(dir_find_next_appendable_volume(jcr) &&
- strcmp(dev->VolHdr.VolName, jcr->VolumeName) == 0)) { /* wrong tape mounted */
- if (dev->num_writers != 0) {
- /*
- * ***FIXME*** add multiple writers here if permitted
- * find end of dev chain
- * dev->next = init_dev(NULL, dev->device);
- * ...
- */
- Jmsg(jcr, M_FATAL, 0, _("Device %s is busy writing on another Volume.\n"), dev_name(dev));
- goto get_out;
- }
- /* Wrong tape mounted, release it, then fall through to get correct one */
- release = 1;
- do_mount = 1;
- }
- } else {
- /* Not already in append mode, so mount the device */
- if (dev->state & ST_READ) {
- Jmsg(jcr, M_FATAL, 0, _("Device %s is busy reading.\n"), dev_name(dev));
- goto get_out;
- }
- ASSERT(dev->num_writers == 0);
- do_mount = 1;
+ if (dev->num_writers == 0) {
+ memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
+ }
+ have_vol = dcr->is_tape_position_ok();
}
- if (do_mount) {
- if (!mount_next_write_volume(jcr, dev, block, release)) {
- Jmsg(jcr, M_FATAL, 0, _("Could not ready device %s for append.\n"),
- dev_name(dev));
- goto get_out;
+ if (!have_vol) {
+ 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"),
+ dev->print_name());
+ Dmsg1(200, "Could not ready device %s for append.\n",
+ dev->print_name());
+ }
+ goto get_out;
}
+ Dmsg2(190, "Output pos=%u:%u\n", dcr->dev->file, dcr->dev->block_num);
}
- dev->num_writers++;
- if (dev->num_writers > 1) {
- Dmsg2(100, "Hey!!!! There are %d writers on device %s\n", dev->num_writers,
- dev_name(dev));
- }
- if (jcr->NumVolumes == 0) {
- jcr->NumVolumes = 1;
+ dev->num_writers++; /* we are now a writer */
+ if (jcr->NumWriteVolumes == 0) {
+ jcr->NumWriteVolumes = 1;
}
- attach_jcr_to_device(dev, jcr); /* attach jcr to device */
- stat = 1; /* good return */
+ dev->VolCatInfo.VolCatJobs++; /* increment number of jobs on vol */
+ dir_update_volume_info(dcr, false, false); /* send Volume info to Director */
+ ok = true;
get_out:
- P(dev->mutex);
- unblock_device(dev);
- V(dev->mutex);
- return stat;
+ dev->dlock();
+ dcr->clear_reserved();
+ dev->dunblock(DEV_LOCKED);
+ 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.
+ *
*/
-int release_device(JCR *jcr, DEVICE *dev)
+bool release_device(DCR *dcr)
{
- lock_device(dev);
- Dmsg1(100, "release_device device is %s\n", dev_is_tape(dev)?"tape":"disk");
- if (dev->state & ST_READ) {
- dev->state &= ~ST_READ; /* clear read bit */
- if (!dev_is_tape(dev) || !dev_cap(dev, CAP_ALWAYSOPEN)) {
- if (dev_cap(dev, CAP_OFFLINEUNMOUNT)) {
- offline_dev(dev);
- }
- close_dev(dev);
- }
- /******FIXME**** send read volume usage statistics to director */
+ JCR *jcr = dcr->jcr;
+ DEVICE *dev = dcr->dev;
+ bool ok = true;
+ char tbuf[100];
+
+ /* lock only if not already locked by this thread */
+ if (!dcr->is_dev_locked()) {
+ dev->r_dlock();
+ }
+ 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 */
+ dcr->clear_reserved();
+
+ if (dev->can_read()) {
+ dev->clear_read(); /* clear read bit */
+ Dmsg0(100, "dir_update_vol_info. Release0\n");
+ dir_update_volume_info(dcr, false, false); /* send Volume info to Director */
+ volume_unused(dcr);
} else if (dev->num_writers > 0) {
+ /*
+ * Note if WEOT is set, we are at the end of the tape
+ * and may not be positioned correctly, so the
+ * job_media_record and update_vol_info have already been
+ * done, which means we skip them here.
+ */
dev->num_writers--;
- if (dev->state & ST_TAPE) {
- jcr->EndBlock = dev->EndBlock;
- jcr->EndFile = dev->EndFile;
- Dmsg2(200, "Release device: EndFile=%u EndBlock=%u\n", jcr->EndFile, jcr->EndBlock);
- } else {
- jcr->EndBlock = (uint32_t)dev->file_addr;
- jcr->EndFile = (uint32_t)(dev->file_addr >> 32);
- }
Dmsg1(100, "There are %d writers in release_device\n", dev->num_writers);
- if (dev->num_writers == 0) {
- Dmsg0(100, "dir_create_jobmedia_record. Release\n");
- dir_create_jobmedia_record(jcr);
- weof_dev(dev, 1);
- 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(200, "dir_update_vol_info. Release0\n");
- dir_update_volume_info(jcr, &dev->VolCatInfo, 0); /* send Volume info to Director */
-
- if (!dev_is_tape(dev) || !dev_cap(dev, CAP_ALWAYSOPEN)) {
- if (dev_cap(dev, CAP_OFFLINEUNMOUNT)) {
- offline_dev(dev);
- }
- close_dev(dev);
- }
+ if (dev->is_labeled()) {
+ Dmsg2(200, "dir_create_jobmedia. Release vol=%s dev=%s\n",
+ dev->VolCatInfo.VolCatName, 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);
+ }
+ /* 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 */
+ 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->VolCatInfo.VolCatName, dev->print_name());
+ }
+ if (dev->num_writers == 0) { /* if not being used */
+ volume_unused(dcr); /* we obviously are not using the volume */
+ }
+ }
+
+ } else {
+ /*
+ * If we reach here, it is most likely because the job
+ * has failed, since the device is not in read mode and
+ * there are no writers. It was probably reserved.
+ */
+ volume_unused(dcr);
+ }
+ unlock_volumes();
+ Dmsg3(100, "%d writers, %d reserve, dev=%s\n", dev->num_writers, dev->num_reserved(),
+ dev->print_name());
+ debug_list_volumes("acquire:release_device()");
+
+
+ /* 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();
+ }
+
+ /* Fire off Alert command and include any output */
+ if (!job_canceled(jcr) && dcr->device->alert_command) {
+ POOLMEM *alert;
+ int status = 1;
+ BPIPE *bpipe;
+ 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");
+ if (bpipe) {
+ while (fgets(line, sizeof(line), bpipe->rfd)) {
+ Jmsg(jcr, M_ALERT, 0, _("Alert: %s"), line);
+ }
+ status = close_bpipe(bpipe);
} else {
- Dmsg0(100, "dir_create_jobmedia_record. Release\n");
- dir_create_jobmedia_record(jcr);
- Dmsg0(200, "dir_update_vol_info. Release1\n");
- dev->VolCatInfo.VolCatFiles = dev->file; /* set number of files */
- dev->VolCatInfo.VolCatJobs++; /* increment number of jobs */
- dir_update_volume_info(jcr, &dev->VolCatInfo, 0); /* send Volume info to Director */
+ status = errno;
}
+ if (status != 0) {
+ berrno be;
+ Jmsg(jcr, M_ALERT, 0, _("3997 Bad alert command: %s: ERR=%s.\n"),
+ alert, be.bstrerror(status));
+ }
+
+ Dmsg1(400, "alert status=%d\n", status);
+ free_pool_memory(alert);
+ }
+ 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);
+ dev->dunlock();
+ if (dcr->keep_dcr) {
+ detach_dcr_from_dev(dcr);
} else {
- Jmsg2(jcr, M_ERROR, 0, _("BAD ERROR: release_device %s, Volume %s not in use.\n"),
- dev_name(dev), NPRT(jcr->VolumeName));
+ if (jcr->read_dcr == dcr) {
+ jcr->read_dcr = NULL;
+ }
+ if (jcr->dcr == dcr) {
+ jcr->dcr = NULL;
+ }
+ 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, DCR *dcr, DEVICE *dev)
+{
+ 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) {
+ 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);
+ }
+ /* 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);
+ }
+ 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)
+{
+ 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 (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;
+ 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 && dev) {
+ dev->dlock();
+ dcr->unreserve_device();
+ 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 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;
+
+ 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;
}
- detach_jcr_from_device(dev, jcr);
- unlock_device(dev);
- return 1;
+ free(dcr);
}
projects / bacula / bacula / blobdiff