+/*
+ Bacula® - The Network Backup Solution
+
+ Copyright (C) 2000-2012 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 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 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 Kern Sibbald.
+ The licensor of Bacula is the Free Software Foundation Europe
+ (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
+ Switzerland, email:ftf@fsfeurope.org.
+*/
/*
*
* Higher Level Device routines.
* Obviously, no zzz_dev() is allowed to call
* a www_device() or everything falls apart.
*
- * Concerning the routines lock_device() and block_device()
+ * Concerning the routines dev->r_lock()() and block_device()
* see the end of this module for details. In general,
* blocking a device leaves it in a state where all threads
* other than the current thread block when they attempt to
*
* Version $Id$
*/
-/*
- Copyright (C) 2000-2005 Kern Sibbald
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- 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
- the file LICENSE for additional details.
-
- */
#include "bacula.h" /* pull in global headers */
#include "stored.h" /* pull in Storage Deamon headers */
* We enter with device locked, and
* exit with device locked.
*
- * Note, we are called only from one place in block.c
+ * Note, we are called only from one place in block.c for the daemons.
+ * The btape utility calls it from btape.c.
*
* Returns: true on success
* false on failure
*/
-bool fixup_device_block_write_error(DCR *dcr)
+bool fixup_device_block_write_error(DCR *dcr, int retries)
{
char PrevVolName[MAX_NAME_LENGTH];
DEV_BLOCK *label_blk;
char dt[MAX_TIME_LENGTH];
JCR *jcr = dcr->jcr;
DEVICE *dev = dcr->dev;
+ int blocked = dev->blocked(); /* save any previous blocked status */
+ bool ok = false;
wait_time = time(NULL);
- Dmsg0(100, "Enter fixup_device_block_write_error\n");
+ Dmsg0(100, "=== Enter fixup_device_block_write_error\n");
+ /*
+ * If we are blocked at entry, unblock it, and set our own block status
+ */
+ if (blocked != BST_NOT_BLOCKED) {
+ unblock_device(dev);
+ }
block_device(dev, BST_DOING_ACQUIRE);
- /* Unlock, but leave BLOCKED */
- unlock_device(dev);
- bstrncpy(PrevVolName, dev->VolCatInfo.VolCatName, sizeof(PrevVolName));
+ /* Continue unlocked, but leave BLOCKED */
+ dev->Unlock();
+
+ bstrncpy(PrevVolName, dev->getVolCatName(), sizeof(PrevVolName));
bstrncpy(dev->VolHdr.PrevVolumeName, PrevVolName, sizeof(dev->VolHdr.PrevVolumeName));
label_blk = new_block(dev);
edit_uint64_with_commas(dev->VolCatInfo.VolCatBlocks, b2),
bstrftime(dt, sizeof(dt), time(NULL)));
- if (!mount_next_write_volume(dcr, 1)) {
+ Dmsg1(050, "set_unload dev=%s\n", dev->print_name());
+ dev->set_unload();
+ if (!dcr->mount_next_write_volume()) {
free_block(label_blk);
dcr->block = block;
- P(dev->mutex);
- unblock_device(dev);
- return false; /* device locked */
+ dev->Lock();
+ goto bail_out;
}
- P(dev->mutex); /* lock again */
+ Dmsg2(050, "must_unload=%d dev=%s\n", dev->must_unload(), dev->print_name());
+ dev->Lock(); /* lock again */
+
+ dev->VolCatInfo.VolCatJobs++; /* increment number of jobs on vol */
+ dir_update_volume_info(dcr, false, false); /* send Volume info to Director */
Jmsg(jcr, M_INFO, 0, _("New volume \"%s\" mounted on device %s at %s.\n"),
dcr->VolumeName, dev->print_name(), bstrftime(dt, sizeof(dt), time(NULL)));
* empty label_blk, and nothing will be written.
*/
Dmsg0(190, "write label block to dev\n");
- if (!write_block_to_dev(dcr)) {
+ if (!dcr->write_block_to_dev()) {
berrno be;
Pmsg1(0, _("write_block_to_device Volume label failed. ERR=%s"),
- be.strerror(dev->dev_errno));
+ be.bstrerror(dev->dev_errno));
free_block(label_blk);
dcr->block = block;
- unblock_device(dev);
- return false; /* device locked */
+ goto bail_out;
}
free_block(label_blk);
dcr->block = block;
/*
* Walk through all attached jcrs indicating the volume has changed
*/
- Dmsg1(100, "Walk attached dcrs. Volume=%s\n", dev->VolCatInfo.VolCatName);
+ Dmsg1(100, "Notify vol change. Volume=%s\n", dev->getVolCatName());
DCR *mdcr;
foreach_dlist(mdcr, dev->attached_dcrs) {
JCR *mjcr = mdcr->jcr;
/* Write overflow block to device */
Dmsg0(190, "Write overflow block to dev\n");
- if (!write_block_to_dev(dcr)) {
+ if (!dcr->write_block_to_dev()) {
berrno be;
- Pmsg1(0, _("write_block_to_device overflow block failed. ERR=%s"),
- be.strerror(dev->dev_errno));
- unblock_device(dev);
- return false; /* device locked */
+ Dmsg1(0, _("write_block_to_device overflow block failed. ERR=%s"),
+ be.bstrerror(dev->dev_errno));
+ /* Note: recursive call */
+ if (retries-- <= 0 || !fixup_device_block_write_error(dcr, retries)) {
+ Jmsg2(jcr, M_FATAL, 0,
+ _("Catastrophic error. Cannot write overflow block to device %s. ERR=%s"),
+ dev->print_name(), be.bstrerror(dev->dev_errno));
+ goto bail_out;
+ }
}
+ ok = true;
+bail_out:
+ /*
+ * At this point, the device is locked and blocked.
+ * Unblock the device, restore any entry blocked condition, then
+ * return leaving the device locked (as it was on entry).
+ */
unblock_device(dev);
- return true; /* device locked */
+ if (blocked != BST_NOT_BLOCKED) {
+ block_device(dev, blocked);
+ }
+ return ok; /* device locked */
+}
+
+void set_start_vol_position(DCR *dcr)
+{
+ DEVICE *dev = dcr->dev;
+ /* Set new start position */
+ if (dev->is_tape()) {
+ dcr->StartBlock = dev->block_num;
+ dcr->StartFile = dev->file;
+ } else {
+ dcr->StartBlock = (uint32_t)dev->file_addr;
+ dcr->StartFile = (uint32_t)(dev->file_addr >> 32);
+ }
}
/*
void set_new_volume_parameters(DCR *dcr)
{
JCR *jcr = dcr->jcr;
- DEVICE *dev = dcr->dev;
if (dcr->NewVol && !dir_get_volume_info(dcr, GET_VOL_INFO_FOR_WRITE)) {
Jmsg1(jcr, M_ERROR, 0, "%s", jcr->errmsg);
}
- /* Set new start/end positions */
- if (dev->is_tape()) {
- dcr->StartBlock = dev->block_num;
- dcr->StartFile = dev->file;
- } else {
- dcr->StartBlock = (uint32_t)dev->file_addr;
- dcr->StartFile = (uint32_t)(dev->file_addr >> 32);
- }
- /* Reset indicies */
- dcr->VolFirstIndex = 0;
- dcr->VolLastIndex = 0;
- jcr->NumVolumes++;
+ set_new_file_parameters(dcr);
+ jcr->NumWriteVolumes++;
dcr->NewVol = false;
- dcr->WroteVol = false;
}
/*
*/
void set_new_file_parameters(DCR *dcr)
{
- DEVICE *dev = dcr->dev;
+ set_start_vol_position(dcr);
- /* Set new start/end positions */
- if (dev->is_tape()) {
- dcr->StartBlock = dev->block_num;
- dcr->StartFile = dev->file;
- } else {
- dcr->StartBlock = (uint32_t)dev->file_addr;
- dcr->StartFile = (uint32_t)(dev->file_addr >> 32);
- }
/* Reset indicies */
dcr->VolFirstIndex = 0;
dcr->VolLastIndex = 0;
return false;
}
- lock_device(dev);
+ dev->rLock();
/* Defer opening files */
if (!dev->is_tape()) {
}
int mode;
- if (dev_cap(dev, CAP_STREAM)) {
+ if (dev->has_cap(CAP_STREAM)) {
mode = OPEN_WRITE_ONLY;
} else {
mode = OPEN_READ_ONLY;
}
Dmsg0(129, "Opening device.\n");
- if (dev->open(dcr, mode) < 0) {
+ if (!dev->open(dcr, mode)) {
Emsg1(M_FATAL, 0, _("dev open failed: %s\n"), dev->errmsg);
ok = false;
goto bail_out;
Dmsg1(129, "open dev %s OK\n", dev->print_name());
bail_out:
- unlock_device(dev);
+ dev->Unlock();
return ok;
}
DEVICE *dev = dcr->dev;
/* Open device */
int mode;
- if (dev_cap(dev, CAP_STREAM)) {
+ if (dev->has_cap(CAP_STREAM)) {
mode = OPEN_WRITE_ONLY;
} else {
mode = OPEN_READ_WRITE;
}
- if (dev->open(dcr, mode) < 0) {
+ if (!dev->open(dcr, mode)) {
/* If polling, ignore the error */
/* If DVD, also ignore the error, very often you cannot open the device
* (when there is no DVD, or when the one inserted is a wrong one) */
}
return true;
}
-
-
-
-void dev_lock(DEVICE *dev)
-{
- int errstat;
- if ((errstat=rwl_writelock(&dev->lock))) {
- Emsg1(M_ABORT, 0, _("Device write lock failure. ERR=%s\n"), strerror(errstat));
- }
-}
-
-void dev_unlock(DEVICE *dev)
-{
- int errstat;
- if ((errstat=rwl_writeunlock(&dev->lock))) {
- Emsg1(M_ABORT, 0, _("Device write unlock failure. ERR=%s\n"), strerror(errstat));
- }
-}
-
-/*
- * When dev_blocked is set, all threads EXCEPT thread with id no_wait_id
- * must wait. The no_wait_id thread is out obtaining a new volume
- * and preparing the label.
- */
-void _lock_device(const char *file, int line, DEVICE *dev)
-{
- int stat;
- Dmsg3(500, "lock %d from %s:%d\n", dev->dev_blocked, file, line);
- P(dev->mutex);
- if (dev->dev_blocked && !pthread_equal(dev->no_wait_id, pthread_self())) {
- dev->num_waiting++; /* indicate that I am waiting */
- while (dev->dev_blocked) {
- if ((stat = pthread_cond_wait(&dev->wait, &dev->mutex)) != 0) {
- V(dev->mutex);
- Emsg1(M_ABORT, 0, _("pthread_cond_wait failure. ERR=%s\n"),
- strerror(stat));
- }
- }
- dev->num_waiting--; /* no longer waiting */
- }
-}
-
-/*
- * Check if the device is blocked or not
- */
-bool is_device_unmounted(DEVICE *dev)
-{
- bool stat;
- int blocked = dev->dev_blocked;
- stat = (blocked == BST_UNMOUNTED) ||
- (blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP);
- return stat;
-}
-
-void _unlock_device(const char *file, int line, DEVICE *dev)
-{
- Dmsg2(500, "unlock from %s:%d\n", file, line);
- V(dev->mutex);
-}
-
-/*
- * Block all other threads from using the device
- * Device must already be locked. After this call,
- * the device is blocked to any thread calling lock_device(),
- * but the device is not locked (i.e. no P on device). Also,
- * the current thread can do slip through the lock_device()
- * calls without blocking.
- */
-void _block_device(const char *file, int line, DEVICE *dev, int state)
-{
- Dmsg3(500, "block set %d from %s:%d\n", state, file, line);
- ASSERT(dev->get_blocked() == BST_NOT_BLOCKED);
- dev->set_blocked(state); /* make other threads wait */
- dev->no_wait_id = pthread_self(); /* allow us to continue */
-}
-
-
-
-/*
- * Unblock the device, and wake up anyone who went to sleep.
- */
-void _unblock_device(const char *file, int line, DEVICE *dev)
-{
- Dmsg3(500, "unblock %s from %s:%d\n", dev->print_blocked(), file, line);
- ASSERT(dev->dev_blocked);
- dev->set_blocked(BST_NOT_BLOCKED);
- dev->no_wait_id = 0;
- if (dev->num_waiting > 0) {
- pthread_cond_broadcast(&dev->wait); /* wake them up */
- }
-}
-
-/*
- * Enter with device locked and blocked
- * Exit with device unlocked and blocked by us.
- */
-void _steal_device_lock(const char *file, int line, DEVICE *dev, bsteal_lock_t *hold, int state)
-{
-
- Dmsg3(400, "steal lock. old=%s from %s:%d\n", dev->print_blocked(),
- file, line);
- hold->dev_blocked = dev->get_blocked();
- hold->dev_prev_blocked = dev->dev_prev_blocked;
- hold->no_wait_id = dev->no_wait_id;
- dev->set_blocked(state);
- Dmsg1(400, "steal lock. new=%s\n", dev->print_blocked());
- dev->no_wait_id = pthread_self();
- V(dev->mutex);
-}
-
-/*
- * Enter with device blocked by us but not locked
- * Exit with device locked, and blocked by previous owner
- */
-void _give_back_device_lock(const char *file, int line, DEVICE *dev, bsteal_lock_t *hold)
-{
- Dmsg3(400, "return lock. old=%s from %s:%d\n",
- dev->print_blocked(), file, line);
- P(dev->mutex);
- dev->dev_blocked = hold->dev_blocked;
- dev->dev_prev_blocked = hold->dev_prev_blocked;
- dev->no_wait_id = hold->no_wait_id;
- Dmsg1(400, "return lock. new=%s\n", dev->print_blocked());
- if (dev->num_waiting > 0) {
- pthread_cond_broadcast(&dev->wait); /* wake them up */
- }
-}
projects / bacula / bacula / blobdiff