* 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
+ 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 as
- published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
+ 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 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.
+ 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 */
-static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
-
-DCR *new_dcr(JCR *jcr, DEVICE *dev)
-{
- if (jcr && jcr->dcr) {
- return jcr->dcr;
- }
- DCR *dcr = (DCR *)malloc(sizeof(DCR));
- memset(dcr, 0, sizeof(DCR));
- if (jcr) {
- jcr->dcr = dcr;
- }
- dcr->jcr = jcr;
- dcr->dev = dev;
- dcr->block = new_block(dev);
- dcr->record = new_record();
- dcr->spool_fd = -1;
- dcr->max_spool_size = dev->device->max_spool_size;
- return dcr;
-}
-
-void free_dcr(DCR *dcr)
-{
- if (dcr->block) {
- free_block(dcr->block);
- }
- if (dcr->record) {
- free_record(dcr->record);
- }
- if (dcr->jcr) {
- dcr->jcr->dcr = NULL;
- }
- free(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
*/
-DCR *acquire_device_for_read(JCR *jcr)
+DCR *acquire_device_for_read(DCR *dcr)
{
+ DEVICE *dev = dcr->dev;
+ JCR *jcr = dcr->jcr;
bool vol_ok = false;
bool tape_previously_mounted;
bool tape_initially_mounted;
VOL_LIST *vol;
- int autochanger = 0;
+ bool try_autochanger = true;
int i;
- DCR *dcr = jcr->dcr;
- DEVICE *dev;
+ int vol_label_status;
+ int retry = 0;
- /* Called for each volume */
- if (!dcr) {
- dcr = new_dcr(jcr, jcr->device->dev);
- }
- dev = dcr->dev;
- if (device_is_unmounted(dev)) {
- Jmsg(jcr, M_WARNING, 0, _("device %s is BLOCKED due to user unmount.\n"),
- dev_name(dev));
- }
- lock_device(dev);
- block_device(dev, BST_DOING_ACQUIRE);
- unlock_device(dev);
+ dev->block(BST_DOING_ACQUIRE);
- init_dev_wait_timers(dev);
- if (dev_state(dev, ST_READ) || dev->num_writers > 0) {
- Jmsg2(jcr, M_FATAL, 0, _("Device %s is busy. Job %d canceled.\n"),
- dev_name(dev), jcr->JobId);
+ if (dev->num_writers > 0) {
+ Jmsg2(jcr, M_FATAL, 0, _("Num_writers=%d not zero. Job %d canceled.\n"),
+ dev->num_writers, jcr->JobId);
goto get_out;
}
- tape_previously_mounted = dev_state(dev, ST_READ) ||
- dev_state(dev, ST_APPEND) ||
- dev_state(dev, ST_LABEL);
- tape_initially_mounted = tape_previously_mounted;
-
/* Find next Volume, if any */
vol = jcr->VolList;
if (!vol) {
for (i=1; i<jcr->CurVolume; i++) {
vol = vol->next;
}
- pm_strcpy(&jcr->VolumeName, vol->VolumeName);
+ if (!vol) {
+ goto get_out; /* should not happen */
+ }
bstrncpy(dcr->VolumeName, vol->VolumeName, sizeof(dcr->VolumeName));
- for (i=0; i<5; i++) {
+ 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 */
+ Dmsg0(200, "dir_get_volume_info\n");
+ if (!dir_get_volume_info(dcr, GET_VOL_INFO_FOR_READ)) {
+ Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
+ }
+
+ 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);
- goto get_out; /* error return */
+ Mmsg1(dev->errmsg, _("Job %d canceled.\n"), jcr->JobId);
+ goto get_out; /* error return */
}
/*
* 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, dcr->VolumeName, OPEN_READ_ONLY) < 0) {
- Jmsg(jcr, M_FATAL, 0, _("Open device %s volume %s failed, ERR=%s\n"),
- dev_name(dev), dcr->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->dev_errno == EIO) { /* no tape loaded */
+ Jmsg3(jcr, M_WARNING, 0, _("Read 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, _("Read open device %s Volume \"%s\" failed: ERR=%s\n"),
+ dev->print_name(), dcr->VolumeName, strerror_dev(dev));
+ goto get_out;
}
- /****FIXME***** do not reread label if ioctl() says we are
- * correctly possitioned. Possibly have way user can turn
- * this optimization (to be implemented) off.
- */
- dcr->dev->state &= ~ST_LABEL; /* force reread of label */
+ Dmsg1(100, "opened dev %s OK\n", dev->print_name());
+
+ /* Read Volume Label */
+
Dmsg0(200, "calling read-vol-label\n");
- switch (read_dev_volume_label(jcr, dev, dcr->block)) {
+ vol_label_status = read_dev_volume_label(dcr);
+ switch (vol_label_status) {
case VOL_OK:
- vol_ok = true;
- break; /* got it */
+ vol_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;
+ /*
+ * 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;
- }
- /* Fall through */
+ 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));
+ }
+ /* Fall through */
default:
- Jmsg(jcr, M_WARNING, 0, "%s", jcr->errmsg);
+ Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
default_path:
- tape_previously_mounted = true;
- Dmsg0(200, "dir_get_volume_info\n");
- if (!dir_get_volume_info(jcr, GET_VOL_INFO_FOR_READ)) {
- Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
- }
- /* Call autochanger only once unless ask_sysop called */
- if (!autochanger) {
- int stat;
+ tape_previously_mounted = true;
+
+ /* If the device requires mount, close it, so the device can be ejected.
+ * FIXME: This should perhaps be done for all devices. */
+ if (dev->requires_mount()) {
+ force_close_device(dev);
+ }
+
+ /* 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);
- stat = autoload_device(jcr, dev, 0, NULL);
- if (stat > 0) {
- autochanger = 1;
- continue;
- }
- }
- /* Mount a specific volume and no other */
+ dcr->VolumeName, dcr->VolCatInfo.Slot);
+ stat = autoload_device(dcr, 0, NULL);
+ if (stat > 0) {
+ try_autochanger = false;
+ continue; /* try reading volume mounted */
+ }
+ }
+
+ /* 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 */
- }
- autochanger = 0; /* permit using autochanger again */
- continue; /* try reading again */
+ if (!dir_ask_sysop_to_mount_volume(dcr)) {
+ goto get_out; /* error return */
+ }
+ try_autochanger = true; /* permit using autochanger again */
+ continue; /* try reading again */
} /* end switch */
break;
} /* end for loop */
if (!vol_ok) {
- Jmsg1(jcr, M_FATAL, 0, _("Too many errors trying to mount device \"%s\".\n"),
- dev_name(dev));
+ Jmsg1(jcr, M_FATAL, 0, _("Too many errors trying to mount device %s.\n"),
+ dev->print_name());
goto get_out;
}
- dev->state &= ~ST_APPEND; /* clear any previous append mode */
- dev->state |= ST_READ; /* set read mode */
- attach_jcr_to_device(dev, jcr); /* attach jcr to device */
+ 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"),
- jcr->VolumeName, dev_name(dev));
+ dcr->VolumeName, dev->print_name());
get_out:
- P(dev->mutex);
- unblock_device(dev);
- V(dev->mutex);
- if (!vol_ok) {
- free_dcr(dcr);
- 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;
}
+ V(dev->mutex);
+ dev->unblock();
+ Dmsg1(000, "jcr->dcr=%p\n", jcr->dcr);
return dcr;
}
+
/*
* Acquire device for writing. We permit multiple writers.
* If this is the first one, we read the label.
*
* Returns: NULL if failed for any reason
- * dev if successful (may change if new dev opened)
- * This routine must be single threaded because we may create
- * multiple devices (for files), thus we have our own mutex
- * on top of the device mutex.
+ * dcr if successful.
+ * Note, normally reserve_device_for_append() is called
+ * before this routine.
*/
-DCR *acquire_device_for_append(JCR *jcr)
+DCR *acquire_device_for_append(DCR *dcr)
{
- int release = 0;
+ bool release = false;
bool recycle = false;
bool do_mount = false;
- DCR *dcr;
- DEVICE *dev = jcr->device->dev;
+ DEVICE *dev = dcr->dev;
+ JCR *jcr = dcr->jcr;
+
+ init_device_wait_timers(dcr);
- dcr = new_dcr(jcr, dev);
- if (device_is_unmounted(dev)) {
- Jmsg(jcr, M_WARNING, 0, _("device %s is BLOCKED due to user unmount.\n"),
- dev_name(dev));
+ dev->block(BST_DOING_ACQUIRE);
+ Dmsg1(190, "acquire_append device is %s\n", dev->is_tape()?"tape":
+ (dev->is_dvd()?"DVD":"disk"));
+
+ /*
+ * 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());
+ goto get_out;
}
- lock_device(dev);
- block_device(dev, BST_DOING_ACQUIRE);
- unlock_device(dev);
- P(mutex); /* lock all devices */
- Dmsg1(190, "acquire_append device is %s\n", dev_is_tape(dev)?"tape":"disk");
-
- if (dev_state(dev, ST_APPEND)) {
- /*
- * Device already in append mode
+ if (dev->can_append()) {
+ Dmsg0(190, "device already in append.\n");
+ /*
+ * Device already in append mode
*
- * Check if we have the right Volume mounted
+ * 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.
*/
- pm_strcpy(&jcr->VolumeName, dev->VolHdr.VolName);
- bstrncpy(dcr->VolumeName, dev->VolHdr.VolName, sizeof(dcr->VolumeName));
- if (!dir_get_volume_info(jcr, GET_VOL_INFO_FOR_WRITE) &&
- !(dir_find_next_appendable_volume(jcr) &&
- strcmp(dev->VolHdr.VolName, jcr->VolumeName) == 0)) { /* wrong tape mounted */
- if (dev->num_writers != 0) {
- DEVICE *d = ((DEVRES *)dev->device)->dev;
- uint32_t open_vols = 0;
- for ( ; d; d=d->next) {
- open_vols++;
- }
- if (dev_state(dev, ST_FILE) && dev->max_open_vols > open_vols) {
- d = init_dev(NULL, (DEVRES *)dev->device); /* init new device */
- d->prev = dev; /* chain in new device */
- d->next = dev->next;
- dev->next = d;
- /* Release old device */
- P(dev->mutex);
- unblock_device(dev);
- V(dev->mutex);
- /* Make new device current device and lock it */
- dev = d;
- lock_device(dev);
- block_device(dev, BST_DOING_ACQUIRE);
- unlock_device(dev);
- } else {
- 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 = true;
+ 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 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",
+ 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(jcr->VolCatInfo.VolCatStatus, "Recycle") == 0;
- if (recycle && dev->num_writers != 0) {
+ /*
+ * 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\""
- " because it is in use by another job.\n"));
- goto get_out;
- }
- }
- } else {
+ " 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 */
- if (dev_state(dev, ST_READ)) {
- Jmsg(jcr, M_FATAL, 0, _("Device %s is busy reading.\n"), dev_name(dev));
- goto get_out;
- }
+ Dmsg0(190, "Not in append mode, try mount.\n");
ASSERT(dev->num_writers == 0);
do_mount = true;
}
if (do_mount || recycle) {
- if (!mount_next_write_volume(jcr, dev, dcr->block, release)) {
- if (!job_canceled(jcr)) {
+ Dmsg0(190, "Do mount_next_write_vol\n");
+ bool mounted = mount_next_write_volume(dcr, release);
+ if (!mounted) {
+ 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_name(dev));
- }
- goto get_out;
+ 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;
}
}
- dev->num_writers++;
+ dev->num_writers++; /* we are now a writer */
if (jcr->NumVolumes == 0) {
jcr->NumVolumes = 1;
}
- attach_jcr_to_device(dev, jcr); /* attach jcr to device */
- goto ok_out;
+ P(dev->mutex);
+ if (dcr->reserved_device) {
+ dev->reserved_device--;
+ Dmsg1(100, "Dec reserve=%d\n", dev->reserved_device);
+ dcr->reserved_device = false;
+ }
+ V(dev->mutex);
+ dev->unblock();
+ return dcr;
/*
- * If we jump here, it is an error return because
- * rtn_dev will still be NULL
+ * Error return
*/
get_out:
- free_dcr(dcr);
- dcr = NULL;
-ok_out:
- P(dev->mutex);
- unblock_device(dev);
+ P(dev->mutex);
+ if (dcr->reserved_device) {
+ dev->reserved_device--;
+ Dmsg1(100, "Dec reserve=%d\n", dev->reserved_device);
+ dcr->reserved_device = false;
+ }
V(dev->mutex);
- V(mutex); /* unlock other threads */
- return dcr;
+ free_dcr(dcr);
+ dev->unblock();
+ return NULL;
}
/*
* the device remains open.
*
*/
-int release_device(JCR *jcr)
+bool release_device(DCR *dcr)
{
- DEVICE *dev = jcr->dcr->dev;
+ JCR *jcr = dcr->jcr;
+ DEVICE *dev = dcr->dev;
+ bool ok = true;
+
lock_device(dev);
- Dmsg1(100, "release_device device is %s\n", dev_is_tape(dev)?"tape":"disk");
- if (dev_state(dev, ST_READ)) {
- dev->state &= ~ST_READ; /* clear read bit */
- if (!dev_is_tape(dev) || !dev_cap(dev, CAP_ALWAYSOPEN)) {
- offline_or_rewind_dev(dev);
- close_dev(dev);
- }
+ Dmsg1(100, "release_device device is %s\n", 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);
+ dcr->reserved_device = false;
+ }
+
+ if (dev->can_read()) {
+ dev->clear_read(); /* clear read bit */
+
/******FIXME**** send read volume usage statistics to director */
} 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--;
Dmsg1(100, "There are %d writers in release_device\n", dev->num_writers);
- if (dev_state(dev, ST_LABEL)) {
+ if (dev->is_labeled()) {
Dmsg0(100, "dir_create_jobmedia_record. Release\n");
- if (!dir_create_jobmedia_record(jcr)) {
- Jmsg(jcr, M_ERROR, 0, _("Could not create JobMedia record for Volume=\"%s\" Job=%s\n"),
- jcr->VolCatInfo.VolCatName, jcr->Job);
- }
- /* If no more writers, write an EOF */
- if (!dev->num_writers && dev_can_write(dev)) {
- 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(100, "dir_update_vol_info. Release0\n");
- dir_update_volume_info(jcr, dev, 0); /* send Volume info to Director */
+ 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, write an EOF */
+ if (!dev->num_writers && dev->can_write()) {
+ weof_dev(dev, 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 (!dev->num_writers && (!dev_is_tape(dev) || !dev_cap(dev, CAP_ALWAYSOPEN))) {
- offline_or_rewind_dev(dev);
- close_dev(dev);
- }
} else {
- Jmsg2(jcr, M_ERROR, 0, _("BAD ERROR: release_device %s, Volume \"%s\" not in use.\n"),
- dev_name(dev), NPRT(jcr->VolumeName));
+ /*
+ * 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.
+ */
}
- detach_jcr_from_device(dev, jcr);
- if (dev->prev && !dev_state(dev, ST_READ) && !dev->num_writers) {
- P(mutex);
- unlock_device(dev);
- dev->prev->next = dev->next; /* dechain */
- term_dev(dev);
- V(mutex);
- } else {
+
+ /* If no writers, close if file or !CAP_ALWAYS_OPEN */
+ if (dev->num_writers == 0 && (!dev->is_tape() || !dev_cap(dev, CAP_ALWAYSOPEN))) {
+ offline_or_rewind_dev(dev);
+ close_device(dev);
+ }
+
+ /* 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 {
+ status = errno;
+ }
+ if (status != 0) {
+ berrno be;
+ Jmsg(jcr, M_ALERT, 0, _("3997 Bad alert command: %s: ERR=%s.\n"),
+ alert, be.strerror(status));
+ }
+
+ Dmsg1(400, "alert status=%d\n", status);
+ free_pool_memory(alert);
+ }
+ unlock_device(dev);
+ if (jcr->read_dcr == dcr) {
+ jcr->read_dcr = NULL;
+ }
+ 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 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;
+}
+
+/*
+ * 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;
+
+ if (dcr->reserved_device) {
+ 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);
}
- free_dcr(jcr->dcr);
- jcr->dcr = NULL;
- return 1;
+
+ /* 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);
}
projects / bacula / bacula / blobdiff