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
- 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 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->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->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;
}
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--;
+ dev->reserved_device--;
+ Dmsg1(200, "Dec reserve=%d\n", dev->reserved_device);
+ dcr->reserved_device = false;
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);
}
if (dcr->jcr) {
dcr->jcr->dcr = NULL;
}
+ free_unused_volume(dcr); /* free unused vols attached to this dcr */
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.
- */
-bool reserve_device_for_read(DCR *dcr)
-{
- DEVICE *dev = dcr->dev;
- JCR *jcr = dcr->jcr;
- bool ok = false;
-
- ASSERT(dcr);
-
- dev->block(BST_DOING_ACQUIRE);
-
- if (device_is_unmounted(dev)) {
- Mmsg(jcr->errmsg, _("Device %s is BLOCKED due to user unmount.\n"),
- dev->print_name());
- goto bail_out;
- }
-
- if (dev->is_busy()) {
- Mmsg1(jcr->errmsg, _("Device %s is busy.\n"),
- dev->print_name());
- goto bail_out;
- }
-
- dev->clear_append();
- dev->set_read();
- ok = true;
-
-bail_out:
- dev->unblock();
- return ok;
-}
-
-
/*********************************************************************
* Acquire device for reading.
* The drive should have previously been reserved by calling
init_device_wait_timers(dcr);
- tape_previously_mounted = dev->can_read() ||
- dev->can_append() ||
+ tape_previously_mounted = dev->can_read() || dev->can_append() ||
dev->is_labeled();
tape_initially_mounted = tape_previously_mounted;
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)) {
* reading. If it is a file, it opens it.
* If it is a tape, it checks the volume name
*/
- 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(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, _("Open device %s Volume \"%s\" failed (EIO): ERR=%s\n"),
+ dev->print_name(), dcr->VolumeName, strerror_dev(dev));
+ goto default_path;
}
- Dmsg1(129, "open_dev %s OK\n", dev->print_name());
+
+ 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(100, "opened 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);
- }
+ /* Read Volume Label */
Dmsg0(200, "calling read-vol-label\n");
+ vol_label_status = read_dev_volume_label(dcr);
switch (vol_label_status) {
case VOL_OK:
vol_ok = 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);
+ if (dev->requires_mount()) {
+ force_close_device(dev);
}
/* Call autochanger only once unless ask_sysop called */
get_out:
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;
-
- ASSERT(dcr);
-
- dev->block(BST_DOING_ACQUIRE);
-
- if (dev->can_read()) {
- Mmsg1(jcr->errmsg, _("Device %s is busy reading.\n"), dev->print_name());
- goto bail_out;
- }
-
- if (device_is_unmounted(dev)) {
- Mmsg(jcr->errmsg, _("Device %s is BLOCKED due to user unmount.\n"), dev->print_name());
- goto bail_out;
- }
-
- Dmsg1(190, "reserve_append device is %s\n", dev->is_tape()?"tape":"disk");
-
- if (can_reserve_drive(dcr) != 1) {
- Mmsg1(jcr->errmsg, _("Device %s is busy writing on another Volume.\n"), dev->print_name());
- goto bail_out;
- }
-
- 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 */
- 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));
- }
- return 1; /* reserve drive */
- }
-
- /*
- * Check if device in append mode with no writers (i.e. available)
- */
- if (dev->can_append() && dev->num_writers == 0) {
- /* 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));
- return 1;
- }
-
- /*
- * Now check if the device is in append mode with writers (i.e.
- * available if pool is the same).
- */
- 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 */
-}
/*
* Acquire device for writing. We permit multiple writers.
init_device_wait_timers(dcr);
dev->block(BST_DOING_ACQUIRE);
- Dmsg1(190, "acquire_append device is %s\n", dev->is_tape()?"tape":"disk");
+ Dmsg1(190, "acquire_append device is %s\n", dev->is_tape()?"tape":
+ (dev->is_dvd()?"DVD":"disk"));
if (dcr->reserved_device) {
dev->reserved_device--;
+ Dmsg1(200, "Dec reserve=%d\n", 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());
+ 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;
}
* 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.
*/
- bstrncpy(dcr->VolumeName, dev->VolHdr.VolName, sizeof(dcr->VolumeName));
+ 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.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());
+ 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 */
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.VolName, dev->print_name());
+ 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");
/* 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;
}
JCR *jcr = dcr->jcr;
DEVICE *dev = dcr->dev;
bool ok = true;
+ bool was_reading = false;
lock_device(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(200, "Dec reserve=%d\n", dev->reserved_device);
dcr->reserved_device = false;
}
if (dev->can_read()) {
dev->clear_read(); /* clear read bit */
+ was_reading = true;
/******FIXME**** send read volume usage statistics to director */
/* 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.VolName);
+ write_ansi_ibm_labels(dcr, ANSI_EOF_LABEL, dev->VolHdr.VolumeName);
}
if (!dev->at_weot()) {
dev->VolCatInfo.VolCatFiles = dev->file; /* set number of files */
/* 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);
+ close_device(dev);
}
/* Fire off Alert command and include any output */
}
unlock_device(dev);
free_dcr(dcr);
- jcr->dcr = NULL;
+ if (was_reading) {
+ jcr->read_dcr = NULL;
+ } else {
+ jcr->dcr = NULL;
+ }
pthread_cond_broadcast(&wait_device_release);
return ok;
}
projects / bacula / bacula / blobdiff