/*
- Bacula® - The Network Backup Solution
-
- Copyright (C) 2000-2007 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 two of the GNU General Public
- License as published by the Free Software Foundation plus additions
- that are listed 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., 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.
+ Bacula(R) - The Network Backup Solution
+
+ Copyright (C) 2000-2017 Kern Sibbald
+
+ The original author of Bacula is Kern Sibbald, with contributions
+ from many others, a complete list can be found in the file AUTHORS.
+
+ You may use this file and others of this release according to the
+ license defined in the LICENSE file, which includes the Affero General
+ Public License, v3.0 ("AGPLv3") and some additional permissions and
+ terms pursuant to its AGPLv3 Section 7.
+
+ This notice must be preserved when any source code is
+ conveyed and/or propagated.
+
+ Bacula(R) is a registered trademark of Kern Sibbald.
*/
/*
*
* Obviously, no zzz_dev() is allowed to call
* a www_device() or everything falls apart.
*
- * Concerning the routines dev->r_lock()() and block_device()
+ * Concerning the routines dev->rLock()() 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
*
* Kern Sibbald, MM, MMI
*
- * Version $Id$
*/
#include "bacula.h" /* pull in global headers */
#include "stored.h" /* pull in Storage Deamon headers */
-#ifdef SD_DEBUG_LOCK
-const int dbglvl = 0;
-#else
-const int dbglvl = 500;
-#endif
-
-
/* Forward referenced functions */
/*
* We enter with device locked, and
* exit with device locked.
*
- * Note, we are called only from one place in block.c for the daemons.
+ * 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;
DEV_BLOCK *block = dcr->block;
+ DEV_BLOCK *ameta_block = dcr->ameta_block;
+ DEV_BLOCK *adata_block = dcr->adata_block;
char b1[30], b2[30];
time_t wait_time;
char dt[MAX_TIME_LENGTH];
JCR *jcr = dcr->jcr;
- DEVICE *dev = dcr->dev;
+ DEVICE *dev;
+ int blocked; /* save any previous blocked status */
+ bool ok = false;
+ bool save_adata = dcr->dev->adata;
+
+ Enter(100);
+ if (save_adata) {
+ dcr->set_ameta(); /* switch to working with ameta */
+ }
+ dev = dcr->dev;
+ blocked = dev->blocked();
wait_time = time(NULL);
- 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 */
- dev->dunlock();
- 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);
- dcr->block = label_blk;
+ /* create temporary block, that will be released at the end, current blocks
+ * have been saved in local DEV_BLOCK above and will be restored before to
+ * leave the function
+ */
+ dev->new_dcr_blocks(dcr);
/* Inform User about end of medium */
Jmsg(jcr, M_INFO, 0, _("End of medium on Volume \"%s\" Bytes=%s Blocks=%s at %s.\n"),
edit_uint64_with_commas(dev->VolCatInfo.VolCatBlocks, b2),
bstrftime(dt, sizeof(dt), time(NULL)));
- if (!mount_next_write_volume(dcr, 1)) {
- free_block(label_blk);
+ Dmsg1(150, "set_unload dev=%s\n", dev->print_name());
+ dev->set_unload();
+
+ /* Clear DCR Start/End Block/File positions */
+ dcr->VolFirstIndex = dcr->VolLastIndex = 0;
+ dcr->StartAddr = dcr->EndAddr = 0;
+ dcr->VolMediaId = 0;
+ dcr->WroteVol = false;
+
+ if (!dcr->mount_next_write_volume()) {
+ dev->free_dcr_blocks(dcr);
dcr->block = block;
- dev->dlock();
- unblock_device(dev);
- return false; /* device locked */
+ dcr->ameta_block = ameta_block;
+ dcr->adata_block = adata_block;
+ dev->Lock();
+ goto bail_out;
}
- dev->dlock(); /* lock again */
+ Dmsg2(150, "must_unload=%d dev=%s\n", dev->must_unload(), dev->print_name());
+
+ dev->notify_newvol_in_attached_dcrs(dcr->VolumeName);
+ dev->Lock(); /* lock again */
dev->VolCatInfo.VolCatJobs++; /* increment number of jobs on vol */
- dir_update_volume_info(dcr, false); /* send Volume info to Director */
+ if (!dir_update_volume_info(dcr, false, false)) { /* send Volume info to Director */
+ goto bail_out;
+ }
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));
- free_block(label_blk);
+ be.bstrerror(dev->dev_errno));
+ dev->free_dcr_blocks(dcr);
dcr->block = block;
- unblock_device(dev);
- return false; /* device locked */
+ dcr->ameta_block = ameta_block;
+ dcr->adata_block = adata_block;
+ goto bail_out;
}
- free_block(label_blk);
+ dev->free_dcr_blocks(dcr);
dcr->block = block;
-
- /*
- * Walk through all attached jcrs indicating the volume has changed
- */
- Dmsg1(100, "Walk attached dcrs. Volume=%s\n", dev->VolCatInfo.VolCatName);
- DCR *mdcr;
- foreach_dlist(mdcr, dev->attached_dcrs) {
- JCR *mjcr = mdcr->jcr;
- if (mjcr->JobId == 0) {
- continue; /* ignore console */
- }
- mdcr->NewVol = true;
- if (jcr != mjcr) {
- bstrncpy(mdcr->VolumeName, dcr->VolumeName, sizeof(mdcr->VolumeName));
- }
- }
+ dcr->ameta_block = ameta_block;
+ dcr->adata_block = adata_block;
/* Clear NewVol now because dir_get_volume_info() already done */
jcr->dcr->NewVol = false;
/* Write overflow block to device */
Dmsg0(190, "Write overflow block to dev\n");
- if (!write_block_to_dev(dcr)) {
+ if (save_adata) {
+ dcr->set_adata(); /* try to write block we entered with */
+ }
+ 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:
+ if (save_adata) {
+ dcr->set_ameta(); /* Do unblock ... on ameta */
+ }
+ /*
+ * 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);
+ }
+ if (save_adata) {
+ dcr->set_adata(); /* switch back to what we entered with */
+ }
+ return ok; /* device locked */
+}
+
+void set_start_vol_position(DCR *dcr)
+{
+ DEVICE *dev = dcr->dev;
+ /* Set new start position */
+ if (dev->is_tape()) {
+ dcr->StartAddr = dcr->EndAddr = dev->get_full_addr();
+ } else {
+ if (dev->adata) {
+ dev = dcr->ameta_dev;
+ }
+ /*
+ * Note: we only update the DCR values for ameta blocks
+ * because all the indexing (JobMedia) is done with
+ * ameta blocks/records, which may point to adata.
+ */
+ dcr->StartAddr = dcr->EndAddr = dev->get_full_addr();
+ }
}
/*
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);
+ Dmsg1(40, "set_new_volume_parameters dev=%s\n", dcr->dev->print_name());
+ if (dcr->NewVol) {
+ while (dcr->VolumeName[0] == 0) {
+ int retries = 5;
+ wait_for_device(dcr, retries);
+ }
+ if (dir_get_volume_info(dcr, dcr->VolumeName, GET_VOL_INFO_FOR_WRITE)) {
+ dcr->dev->clear_wait();
+ } else {
+ Dmsg1(40, "getvolinfo failed. No new Vol: %s", jcr->errmsg);
+ }
}
- /* Reset indicies */
- dcr->VolFirstIndex = 0;
- dcr->VolLastIndex = 0;
+ 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 */
+ Dmsg3(1000, "Reset indices Vol=%s were: FI=%d LI=%d\n", dcr->VolumeName,
+ dcr->VolFirstIndex, dcr->VolLastIndex);
dcr->VolFirstIndex = 0;
dcr->VolLastIndex = 0;
dcr->NewFile = false;
return false;
}
- dev->r_dlock();
+ dev->rLock(false);
/* Defer opening files */
if (!dev->is_tape()) {
goto bail_out;
}
- int mode;
- 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) {
- Emsg1(M_FATAL, 0, _("dev open failed: %s\n"), dev->errmsg);
+ if (!dev->open_device(dcr, OPEN_READ_ONLY)) {
+ Jmsg1(NULL, 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:
- dev->dunlock();
+ dev->rUnlock();
return ok;
}
-
-/*
- * Make sure device is open, if not do so
- */
-bool open_device(DCR *dcr)
-{
- DEVICE *dev = dcr->dev;
- /* Open device */
- int mode;
- if (dev->has_cap(CAP_STREAM)) {
- mode = OPEN_WRITE_ONLY;
- } else {
- mode = OPEN_READ_WRITE;
- }
- if (dev->open(dcr, mode) < 0) {
- /* 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) */
- if (!dev->poll && !dev->is_dvd() && !dev->is_removable()) {
- Jmsg2(dcr->jcr, M_FATAL, 0, _("Unable to open device %s: ERR=%s\n"),
- dev->print_name(), dev->bstrerror());
- Pmsg2(000, _("Unable to open archive %s: ERR=%s\n"),
- dev->print_name(), dev->bstrerror());
- }
- return false;
- }
- return true;
-}
-
-/*
- * Find which JobId corresponds to the current thread
- */
-uint32_t get_jobid_from_tid()
-{
- JCR *jcr;
- uint32_t JobId = 0;
- foreach_jcr(jcr) {
- if (pthread_equal(jcr->my_thread_id, pthread_self())) {
- JobId = (uint32_t)jcr->JobId;
- break;
- }
- }
- endeach_jcr(jcr);
- return JobId;
-}
-
-/*
- * Check if the device is blocked or not
- */
-bool is_device_unmounted(DEVICE *dev)
-{
- bool stat;
- int blocked = dev->blocked();
- stat = (blocked == BST_UNMOUNTED) ||
- (blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP);
- return stat;
-}
-
-void DEVICE::_dlock(const char *file, int line)
-{
- Dmsg4(sd_dbglvl, "dlock from %s:%d precnt=%d JobId=%u\n", file, line,
- m_count, get_jobid_from_tid());
- /* Note, this *really* should be protected by a mutex, but
- * since it is only debug code we don't worry too much.
- */
- if (m_count > 0 && pthread_equal(m_pid, pthread_self())) {
- Dmsg2(sd_dbglvl, "DEADLOCK !!!!!!!!!! from %s:%d\n", file, line);
- }
- P(m_mutex);
- m_pid = pthread_self();
- m_count++;
-}
-
-void DEVICE::_dunlock(const char *file, int line)
-{
- m_count--;
- Dmsg4(sd_dbglvl, "dunlock from %s:%d postcnt=%d JobId=%u\n", file, line,
- m_count, get_jobid_from_tid());
- V(m_mutex);
-}
-
-#ifdef SD_DEBUG_LOCK
-void DEVICE::_r_dunlock(const char *file, int line)
-{
- this->_dunlock(file, line);
-}
-#else
-void DEVICE::r_dunlock()
-{
- this->dunlock();
-}
-#endif
-
-
-/*
- * This is a recursive lock that checks if the device is blocked.
- *
- * When 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.
- */
-#ifdef SD_DEBUG_LOCK
-void DEVICE::_r_dlock(const char *file, int line)
-#else
-void DEVICE::r_dlock()
-#endif
-{
- int stat;
-#ifdef SD_DEBUG_LOCK
- Dmsg4(dbglvl, "r_dlock blked=%s from %s:%d JobId=%u\n", this->print_blocked(),
- file, line, get_jobid_from_tid());
-#else
- Dmsg1dbglvl, "reclock blked=%s\n", this->print_blocked());
-#endif
- this->dlock();
- if (this->blocked() && !pthread_equal(this->no_wait_id, pthread_self())) {
- this->num_waiting++; /* indicate that I am waiting */
- while (this->blocked()) {
- Dmsg3(dbglvl, "r_dlock blked=%s no_wait=%p me=%p\n", this->print_blocked(),
- this->no_wait_id, pthread_self());
- if ((stat = pthread_cond_wait(&this->wait, &m_mutex)) != 0) {
- berrno be;
- this->dunlock();
- Emsg1(M_ABORT, 0, _("pthread_cond_wait failure. ERR=%s\n"),
- be.strerror(stat));
- }
- }
- this->num_waiting--; /* no longer waiting */
- }
-}
-
-/*
- * Block all other threads from using the device
- * Device must already be locked. After this call,
- * the device is blocked to any thread calling dev->r_lock(),
- * but the device is not locked (i.e. no P on device). Also,
- * the current thread can do slip through the dev->r_lock()
- * calls without blocking.
- */
-void _block_device(const char *file, int line, DEVICE *dev, int state)
-{
- Dmsg3(dbglvl, "block set %d from %s:%d\n", state, file, line);
-
- ASSERT(dev->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.
- * Enter: device locked
- * Exit: device locked
- */
-void _unblock_device(const char *file, int line, DEVICE *dev)
-{
- Dmsg3(dbglvl, "unblock %s from %s:%d\n", dev->print_blocked(), file, line);
- ASSERT(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(dbglvl, "steal lock. old=%s from %s:%d\n", dev->print_blocked(),
- file, line);
- hold->dev_blocked = dev->blocked();
- hold->dev_prev_blocked = dev->dev_prev_blocked;
- hold->no_wait_id = dev->no_wait_id;
- dev->set_blocked(state);
- Dmsg1(dbglvl, "steal lock. new=%s\n", dev->print_blocked());
- dev->no_wait_id = pthread_self();
- dev->dunlock();
-}
-
-/*
- * 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(dbglvl, "return lock. old=%s from %s:%d\n",
- dev->print_blocked(), file, line);
- dev->dlock();
- dev->set_blocked(hold->dev_blocked);
- dev->dev_prev_blocked = hold->dev_prev_blocked;
- dev->no_wait_id = hold->no_wait_id;
- Dmsg1(dbglvl, "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