* 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) 2002-2005 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
#include "bacula.h" /* pull in global headers */
#include "stored.h" /* pull in Storage Deamon headers */
-static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+static int can_reserve_drive(DCR *dcr);
+
+/*
+ * 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)
+{
+ 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;
+ if (dev) {
+ dcr->device = dev->device;
+ }
+ dcr->block = new_block(dev);
+ dcr->rec = new_record();
+ dcr->spool_fd = -1;
+ dcr->max_spool_size = dev->device->max_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 */
+ }
+ 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
-/*********************************************************************
- * Acquire device for reading. We permit (for the moment)
- * only one reader. We read the Volume label from the block and
+/*
+ * 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 we reserved the device, we must decrement the
+ * number of writers.
+ */
+ if (dcr->reserved_device) {
+ lock_device(dev);
+ dev->num_writers--;
+ if (dev->num_writers < 0) {
+ Jmsg1(dcr->jcr, M_ERROR, 0, _("Hey! num_writers=%d!!!!\n"), dev->num_writers);
+ dev->num_writers = 0;
+ dcr->reserved_device = false;
+ }
+ unlock_device(dev);
+ }
+
+ /* 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(dcr);
+}
+
+
+/*
+ * We "reserve" the drive by setting the ST_READ bit. No one else
+ * should touch the drive until that is cleared.
+ * This allows the DIR to "reserve" the device before actually
+ * starting the job. If the device is not available, the DIR
+ * can wait (to be implemented 1/05).
+ */
+bool reserve_device_for_read(DCR *dcr)
+{
+ DEVICE *dev = dcr->dev;
+ JCR *jcr = dcr->jcr;
+ bool first;
+
+ ASSERT(dcr);
+
+ dev->block(BST_DOING_ACQUIRE);
+
+ Mmsg(jcr->errmsg, _("Device %s is BLOCKED due to user unmount.\n"),
+ dev->print_name());
+ for (first=true; device_is_unmounted(dev); first=false) {
+ dev->unblock();
+ if (!wait_for_device(dcr, jcr->errmsg, first)) {
+ return false;
+ }
+ dev->block(BST_DOING_ACQUIRE);
+ }
+
+ Mmsg2(jcr->errmsg, _("Device %s is busy. Job %d canceled.\n"),
+ dev->print_name(), jcr->JobId);
+ for (first=true; dev->is_busy(); first=false) {
+ dev->unblock();
+ if (!wait_for_device(dcr, jcr->errmsg, first)) {
+ return false;
+ }
+ dev->block(BST_DOING_ACQUIRE);
+ }
+
+ dev->clear_append();
+ dev->set_read();
+ dev->unblock();
+ return true;
+}
+
+
+/*********************************************************************
+ * 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)
+DCR *acquire_device_for_read(DCR *dcr)
{
- int stat = 0;
- int tape_previously_mounted;
+ 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;
-
- lock_device(dev);
- block_device(dev, BST_DOING_ACQUIRE);
- unlock_device(dev);
-
- tape_previously_mounted = (dev->state & ST_READ) || (dev->state & ST_APPEND);
+ bool try_autochanger = true;
+ int i;
+ int vol_label_status;
+
+ dev->block(BST_DOING_ACQUIRE);
- if (dev->state & ST_READ || dev->num_writers > 0) {
- Jmsg1(jcr, M_FATAL, 0, _("Device %s is busy. Job canceled.\n"), dev_name(dev));
+ 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;
}
/* Find next Volume, if any */
vol = jcr->VolList;
if (!vol) {
- Jmsg(jcr, M_FATAL, 0, _("No volumes specified. Job canceled.\n"));
+ Jmsg(jcr, M_FATAL, 0, _("No volumes specified. Job %d canceled.\n"), jcr->JobId);
goto get_out;
}
jcr->CurVolume++;
- for (int i=1; i<jcr->CurVolume; i++) {
+ 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));
+
+ init_device_wait_timers(dcr);
+
+ tape_previously_mounted = dev->can_read() ||
+ dev->can_append() ||
+ dev->is_labeled();
+ tape_initially_mounted = tape_previously_mounted;
+
- for (int i=0; i<5; i++) {
+ /* 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);
+ }
+
+ dev->num_parts = dcr->VolCatInfo.VolCatParts;
+
+ for (i=0; i<5; i++) {
+ dev->clear_labeled(); /* force reread of label */
if (job_canceled(jcr)) {
- Mmsg0(&dev->errmsg, _("Job canceled.\n"));
+ 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, 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));
+ for ( ; !dev->is_open(); ) {
+ Dmsg1(120, "bstored: open vol=%s\n", dcr->VolumeName);
+ if (open_dev(dev, dcr->VolumeName, OPEN_READ_ONLY) < 0) {
+ if (dev->dev_errno == EIO) { /* no tape loaded */
+ Jmsg3(jcr, M_WARNING, 0, _("Open device %s Volume \"%s\" failed: ERR=%s\n"),
+ dev->print_name(), dcr->VolumeName, strerror_dev(dev));
+ goto default_path;
+ }
+
+ /* If we have a dvd that requires mount,
+ * we need to try to open the label, so the info can be reported
+ * if a wrong volume has been mounted. */
+ if (dev->is_dvd() && (dcr->VolCatInfo.VolCatParts > 0)) {
+ break;
+ }
+
+ Jmsg3(jcr, M_FATAL, 0, _("Open device %s Volume \"%s\" failed: ERR=%s\n"),
+ dev->print_name(), dcr->VolumeName, strerror_dev(dev));
goto get_out;
}
- Dmsg1(129, "open_dev %s OK\n", dev_name(dev));
+ Dmsg1(129, "open_dev %s OK\n", dev->print_name());
+ }
+
+ if (dev->is_dvd()) {
+ vol_label_status = read_dev_volume_label_guess(dcr, 0);
+ } else {
+ vol_label_status = read_dev_volume_label(dcr);
}
- dev->state &= ~ST_LABEL; /* force reread of label */
+
Dmsg0(200, "calling read-vol-label\n");
- switch (read_dev_volume_label(jcr, dev, block)) {
+ switch (vol_label_status) {
case VOL_OK:
- stat = 1;
+ vol_ok = true;
+ memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
break; /* got it */
case VOL_IO_ERROR:
/*
* error messages when nothing is mounted.
*/
if (tape_previously_mounted) {
- Jmsg(jcr, M_WARNING, 0, "%s", jcr->errmsg);
+ 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 */
default:
- Jmsg(jcr, M_WARNING, 0, "%s", jcr->errmsg);
+ Jmsg1(jcr, M_WARNING, 0, "%s", jcr->errmsg);
default_path:
- tape_previously_mounted = 1;
- 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);
+ 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_cap(dev, CAP_REQMOUNT)) {
+ force_close_dev(dev);
}
+
/* Call autochanger only once unless ask_sysop called */
- if (!autochanger) {
+ if (try_autochanger) {
+ int stat;
Dmsg2(200, "calling autoload Vol=%s Slot=%d\n",
- jcr->VolumeName, jcr->VolCatInfo.Slot);
- if ((autochanger=autoload_device(jcr, dev, 0, NULL))) {
- continue;
+ 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)) {
+ if (!dir_ask_sysop_to_mount_volume(dcr)) {
goto get_out; /* error return */
}
- autochanger = 0; /* permit using autochanger again */
+ try_autochanger = true; /* permit using autochanger again */
continue; /* try reading again */
} /* end switch */
break;
} /* end for loop */
- if (stat == 0) {
- Jmsg1(jcr, M_FATAL, 0, _("Too many errors trying to mount device \"%s\".\n"),
- dev_name(dev));
+ if (!vol_ok) {
+ Jmsg1(jcr, M_FATAL, 0, _("Too many errors trying to mount device %s.\n"),
+ dev->print_name());
goto get_out;
}
- dev->state |= ST_READ;
- 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));
- 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);
- }
+ dcr->VolumeName, dev->print_name());
get_out:
- P(dev->mutex);
- unblock_device(dev);
- V(dev->mutex);
- return stat;
+ dev->unblock();
+ if (!vol_ok) {
+ free_dcr(dcr);
+ dcr = NULL;
+ }
+ return dcr;
+}
+
+/*
+ * We reserve the device for appending by incrementing the
+ * reserved_device. We do virtually all the same work that
+ * is done in acquire_device_for_append(), but we do
+ * not attempt to mount the device. This routine allows
+ * the DIR to reserve multiple devices before *really*
+ * starting the job. It also permits the SD to refuse
+ * certain devices (not up, ...).
+ *
+ * Note, in reserving a device, if the device is for the
+ * same pool and the same pool type, then it is acceptable.
+ * The Media Type has already been checked. If we are
+ * the first tor reserve the device, we put the pool
+ * name and pool type in the device record.
+ */
+bool reserve_device_for_append(DCR *dcr)
+{
+ JCR *jcr = dcr->jcr;
+ DEVICE *dev = dcr->dev;
+ bool ok = false;
+ bool first;
+
+ ASSERT(dcr);
+ dev->block(BST_DOING_ACQUIRE);
+
+ Mmsg2(jcr->errmsg, _("Device %s is busy reading. Job %d canceled.\n"),
+ dev->print_name(), jcr->JobId);
+ for (first=true; dev->can_read(); first=false) {
+ dev->unblock();
+ if (!wait_for_device(dcr, jcr->errmsg, first)) {
+ return false;
+ }
+ dev->block(BST_DOING_ACQUIRE);
+ }
+
+
+ Mmsg(jcr->errmsg, _("Device %s is BLOCKED due to user unmount.\n"),
+ dev->print_name());
+ for (first=true; device_is_unmounted(dev); first=false) {
+ dev->unblock();
+ if (!wait_for_device(dcr, jcr->errmsg, first)) {
+ return false;
+ }
+ dev->block(BST_DOING_ACQUIRE);
+ }
+
+ Dmsg1(190, "reserve_append device is %s\n", dev_is_tape(dev)?"tape":"disk");
+
+ for ( ;; ) {
+ switch (can_reserve_drive(dcr)) {
+ case 0:
+ /* ****FIXME**** Make wait */
+ goto bail_out;
+ case -1:
+ goto bail_out; /* error */
+ default:
+ break; /* OK, reserve drive */
+ }
+ break;
+ }
+
+
+ dev->reserved_device++;
+ dcr->reserved_device = true;
+ ok = true;
+
+bail_out:
+ dev->unblock();
+ return ok;
+}
+
+/*
+ * Returns: 1 if drive can be reserved
+ * 0 if we should wait
+ * -1 on error
+ */
+static int can_reserve_drive(DCR *dcr)
+{
+ DEVICE *dev = dcr->dev;
+ JCR *jcr = dcr->jcr;
+ /*
+ * First handle the case that the drive is not yet in append mode
+ */
+ if (!dev->can_append() && dev->num_writers == 0) {
+ /* Now check if there are any reservations on the drive */
+ if (dev->reserved_device) {
+ /* Yes, now check if we want the same Pool and pool type */
+ if (strcmp(dev->pool_name, dcr->pool_name) == 0 &&
+ strcmp(dev->pool_type, dcr->pool_type) == 0) {
+ /* OK, compatible device */
+ } else {
+ /* Drive not suitable for us */
+ Jmsg(jcr, M_WARNING, 0, _("Device %s is busy writing on another Volume.\n"), dev->print_name());
+ return 0; /* wait */
+ }
+ } else {
+ /* Device is available but not yet reserved, reserve it for us */
+ bstrncpy(dev->pool_name, dcr->pool_name, sizeof(dev->pool_name));
+ bstrncpy(dev->pool_type, dcr->pool_type, sizeof(dev->pool_type));
+ dev->PoolId = dcr->PoolId;
+ }
+ return 1; /* reserve drive */
+ }
+
+ /*
+ * Now check if the device is in append mode
+ */
+ if (dev->can_append() || dev->num_writers > 0) {
+ Dmsg0(190, "device already in append.\n");
+ /* Yes, now check if we want the same Pool and pool type */
+ if (strcmp(dev->pool_name, dcr->pool_name) == 0 &&
+ strcmp(dev->pool_type, dcr->pool_type) == 0) {
+ /* OK, compatible device */
+ } else {
+ /* Drive not suitable for us */
+ Jmsg(jcr, M_WARNING, 0, _("Device %s is busy writing on another Volume.\n"), dev->print_name());
+ return 0; /* wait */
+ }
+ } else {
+ Pmsg0(000, "Logic error!!!! Should not get here.\n");
+ Jmsg0(jcr, M_FATAL, 0, _("Logic error!!!! Should not get here.\n"));
+ return -1; /* error, should not get here */
+ }
+ return 1; /* reserve drive */
}
/*
* 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.
*/
-DEVICE * 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;
- DEVICE *rtn_dev = NULL;
+ bool release = false;
+ bool recycle = false;
+ bool do_mount = false;
+ DEVICE *dev = dcr->dev;
+ JCR *jcr = dcr->jcr;
- lock_device(dev);
- block_device(dev, BST_DOING_ACQUIRE);
- unlock_device(dev);
- P(mutex); /* lock all devices */
+ dev->block(BST_DOING_ACQUIRE);
Dmsg1(190, "acquire_append device is %s\n", dev_is_tape(dev)?"tape":"disk");
-
- if (dev->state & ST_APPEND) {
- /*
- * Device already in append mode
+ if (dcr->reserved_device) {
+ dev->reserved_device--;
+ dcr->reserved_device = false;
+ }
+
+ /*
+ * With the reservation system, this should not happen
+ */
+ if (dev->can_read()) {
+ Jmsg(jcr, M_FATAL, 0, _("Device %s is busy reading.\n"), dev->print_name());
+ goto get_out;
+ }
+
+ 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
*/
- pm_strcpy(&jcr->VolumeName, dev->VolHdr.VolName);
- 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 & 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;
- }
+ bstrncpy(dcr->VolumeName, dev->VolHdr.VolName, sizeof(dcr->VolumeName));
+ if (!dir_get_volume_info(dcr, GET_VOL_INFO_FOR_WRITE) &&
+ !(dir_find_next_appendable_volume(dcr) &&
+ strcmp(dev->VolHdr.VolName, dcr->VolumeName) == 0)) { /* wrong tape mounted */
+ Dmsg0(190, "Wrong tape mounted.\n");
+ if (dev->num_writers != 0 || dev->reserved_device) {
+ Jmsg(jcr, M_FATAL, 0, _("Device %s is busy writing on another Volume.\n"), dev->print_name());
+ goto get_out;
}
/* Wrong tape mounted, release it, then fall through to get correct one */
- release = 1;
- do_mount = 1;
- }
- } else {
+ 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\""
+ " because it is in use by another job.\n"));
+ 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 & 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 = 1;
+ do_mount = true;
}
- 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));
+ if (do_mount || recycle) {
+ 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->print_name());
+ }
goto get_out;
}
}
- 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));
- }
+ 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 */
- rtn_dev = dev; /* return device */
+ goto ok_out;
+/*
+ * If we jump here, it is an error return because
+ * rtn_dev will still be NULL
+ */
get_out:
- P(dev->mutex);
- unblock_device(dev);
- V(dev->mutex);
- V(mutex); /* unlock other threads */
- return rtn_dev;
+ free_dcr(dcr);
+ dcr = NULL;
+ok_out:
+ dev->unblock();
+ return dcr;
}
/*
* the device remains open.
*
*/
-int release_device(JCR *jcr, DEVICE *dev)
+bool release_device(DCR *dcr)
{
+ bool ok = true;
+ JCR *jcr = dcr->jcr;
+ DEVICE *dev = dcr->dev;
+
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)) {
- offline_or_rewind_dev(dev);
- close_dev(dev);
- }
+
+ /* if device is reserved, job never started, so release the reserve here */
+ if (dcr->reserved_device) {
+ 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) {
dev->num_writers--;
Dmsg1(100, "There are %d writers in release_device\n", dev->num_writers);
- if (dev->num_writers == 0) {
- /* If we have fully acquired the tape */
- if (dev->state & ST_LABEL) {
- Dmsg0(100, "dir_create_jobmedia_record. Release\n");
- dir_create_jobmedia_record(jcr);
- if (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(200, "dir_update_vol_info. Release0\n");
- dir_update_volume_info(jcr, &dev->VolCatInfo, 0); /* send Volume info to Director */
+ if (dev->is_labeled()) {
+ Dmsg0(100, "dir_create_jobmedia_record. Release\n");
+ if (!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);
+ ok = false;
}
-
- if (!dev_is_tape(dev) || !dev_cap(dev, CAP_ALWAYSOPEN)) {
- offline_or_rewind_dev(dev);
- close_dev(dev);
+ /* If no more writers, write an EOF */
+ if (!dev->num_writers && dev_can_write(dev)) {
+ weof_dev(dev, 1);
+ write_ansi_ibm_labels(dcr, ANSI_EOF_LABEL, dev->VolHdr.VolName);
}
- } else if (dev->state & ST_LABEL) {
- 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 */
+ /* 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 */
+ Dmsg0(100, "==== write ansi eof label \n");
}
+
} 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
+ * has failed, since the device is not in read mode and
+ * there are no writers.
+ */
}
- detach_jcr_from_device(dev, jcr);
- if (dev->prev && !(dev->state & ST_READ) && dev->num_writers == 0) {
- P(mutex);
- unlock_device(dev);
- dev->prev->next = dev->next; /* dechain */
- term_dev(dev);
- V(mutex);
- } else {
- unlock_device(dev);
+
+ /* 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_dev(dev);
}
- return 1;
+
+ /* 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, "");
+ 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);
+ free_dcr(dcr);
+ jcr->dcr = NULL;
+ pthread_cond_broadcast(&wait_device_release);
+ return ok;
}
projects / bacula / bacula / blobdiff