-/*
- *
- * block.c -- tape block handling functions
- *
- * Kern Sibbald, March MMI
- * added BB02 format October MMII
- *
- * Version $Id$
- *
- */
/*
Bacula® - The Network Backup Solution
- Copyright (C) 2001-2007 Free Software Foundation Europe e.V.
+ Copyright (C) 2001-2012 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 two of the GNU General Public
- License as published by the Free Software Foundation plus additions
- that are listed in the file LICENSE.
+ 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 General Public License
+ 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 John Walker.
+ 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.
*/
+/*
+ *
+ * block.c -- tape block handling functions
+ *
+ * Kern Sibbald, March MMI
+ * added BB02 format October MMII
+ *
+ */
#include "bacula.h"
* in the buffer should have already been reserved by
* init_block.
*/
-void ser_block_header(DEV_BLOCK *block)
+static void ser_block_header(DEV_BLOCK *block, bool do_checksum)
{
ser_declare;
uint32_t CheckSum = 0;
}
/* Checksum whole block except for the checksum */
- CheckSum = bcrc32((uint8_t *)block->buf+BLKHDR_CS_LENGTH,
- block_len-BLKHDR_CS_LENGTH);
+ if (do_checksum) {
+ CheckSum = bcrc32((uint8_t *)block->buf+BLKHDR_CS_LENGTH,
+ block_len-BLKHDR_CS_LENGTH);
+ }
Dmsg1(1390, "ser_bloc_header: checksum=%x\n", CheckSum);
ser_begin(block->buf, BLKHDR2_LENGTH);
ser_uint32(CheckSum); /* now add checksum to block header */
dev->dev_errno = EIO;
Mmsg4(dev->errmsg, _("Volume data error at %u:%u! Wanted ID: \"%s\", got \"%s\". Buffer discarded.\n"),
dev->file, dev->block_num, BLKHDR2_ID, Id);
+ Dmsg1(50, "%s", dev->errmsg);
if (block->read_errors == 0 || verbose >= 2) {
Jmsg(jcr, M_ERROR, 0, "%s", dev->errmsg);
}
block->BlockNumber = BlockNumber;
Dmsg3(390, "Read binbuf = %d %d block_len=%d\n", block->binbuf,
bhl, block_len);
- if (block_len <= block->read_len) {
+ if (block_len <= block->read_len && dev->do_checksum()) {
BlockCheckSum = bcrc32((uint8_t *)block->buf+BLKHDR_CS_LENGTH,
block_len-BLKHDR_CS_LENGTH);
if (BlockCheckSum != CheckSum) {
* : false on failure
*
*/
-bool write_block_to_device(DCR *dcr)
+bool DCR::write_block_to_device()
{
bool stat = true;
- DEVICE *dev = dcr->dev;
- JCR *jcr = dcr->jcr;
+ DCR *dcr = this;
if (dcr->spooling) {
stat = write_block_to_spool_file(dcr);
return stat;
}
- if (!dcr->dev_locked) { /* device already locked? */
+ if (!dcr->is_dev_locked()) { /* device already locked? */
+ /* note, do not change this to dcr->r_dlock */
dev->r_dlock(); /* no, lock it */
}
/* Create a jobmedia record for this job */
if (!dir_create_jobmedia_record(dcr)) {
dev->dev_errno = EIO;
- Jmsg(jcr, M_FATAL, 0, _("Could not create JobMedia record for Volume=\"%s\" Job=%s\n"),
- dcr->VolCatInfo.VolCatName, jcr->Job);
+ Jmsg2(jcr, M_FATAL, 0, _("Could not create JobMedia record for Volume=\"%s\" Job=%s\n"),
+ dcr->getVolCatName(), jcr->Job);
set_new_volume_parameters(dcr);
stat = false;
goto bail_out;
if (dcr->NewVol) {
/* Note, setting a new volume also handles any pending new file */
set_new_volume_parameters(dcr);
- dcr->NewFile = false; /* this handled for new file too */
} else {
set_new_file_parameters(dcr);
}
}
- if (!write_block_to_dev(dcr)) {
- if (job_canceled(jcr) || jcr->JobType == JT_SYSTEM) {
+ if (!dcr->write_block_to_dev()) {
+ if (job_canceled(jcr) || jcr->getJobType() == JT_SYSTEM) {
stat = false;
} else {
stat = fixup_device_block_write_error(dcr);
}
bail_out:
- if (!dcr->dev_locked) { /* did we lock dev above? */
+ if (!dcr->is_dev_locked()) { /* did we lock dev above? */
+ /* note, do not change this to dcr->dunlock */
dev->dunlock(); /* unlock it now */
}
return stat;
* Returns: true on success or EOT
* false on hard error
*/
-bool write_block_to_dev(DCR *dcr)
+bool DCR::write_block_to_dev()
{
ssize_t stat = 0;
uint32_t wlen; /* length to write */
int hit_max1, hit_max2;
bool ok = true;
- DEVICE *dev = dcr->dev;
- JCR *jcr = dcr->jcr;
- DEV_BLOCK *block = dcr->block;
+ DCR *dcr = this;
#ifdef NO_TAPE_WRITE_TEST
empty_block(block);
return true;
#endif
+ if (job_canceled(jcr)) {
+ return false;
+ }
+
ASSERT(block->binbuf == ((uint32_t) (block->bufp - block->buf)));
- ASSERT(dev->is_open());
+
+ wlen = block->binbuf;
+ if (wlen <= WRITE_BLKHDR_LENGTH) { /* Does block have data in it? */
+ Dmsg0(100, "return write_block_to_dev no data to write\n");
+ return true;
+ }
/* dump_block(block, "before write"); */
if (dev->at_weot()) {
Dmsg0(100, "return write_block_to_dev with ST_WEOT\n");
dev->dev_errno = ENOSPC;
- Jmsg(jcr, M_FATAL, 0, _("Cannot write block. Device at EOM.\n"));
+ Jmsg1(jcr, M_FATAL, 0, _("Cannot write block. Device at EOM. dev=%s\n"), dev->print_name());
return false;
}
if (!dev->can_append()) {
dev->dev_errno = EIO;
- Jmsg(jcr, M_FATAL, 0, _("Attempt to write on read-only Volume.\n"));
+ Jmsg1(jcr, M_FATAL, 0, _("Attempt to write on read-only Volume. dev=%s\n"), dev->print_name());
return false;
}
- wlen = block->binbuf;
- if (wlen <= WRITE_BLKHDR_LENGTH) { /* Does block have data in it? */
- Dmsg0(100, "return write_block_to_dev no data to write\n");
- return true;
+
+ if (!dev->is_open()) {
+ Jmsg1(jcr, M_FATAL, 0, _("Attempt to write on closed device=%s\n"), dev->print_name());
+ return false;
}
/*
* Clear to the end of the buffer if it is not full,
}
}
- ser_block_header(block);
+ ser_block_header(block, dev->do_checksum());
/* Limit maximum Volume size to value specified by user */
hit_max1 = (dev->max_volume_size > 0) &&
dev->file_size = 0; /* reset file size */
if (!dev->weof(1)) { /* write eof */
- Dmsg0(190, "WEOF error in max file size.\n");
+ Dmsg0(50, "WEOF error in max file size.\n");
Jmsg(jcr, M_FATAL, 0, _("Unable to write EOF. ERR=%s\n"),
dev->bstrerror());
terminate_writing_volume(dcr);
}
if (dev->dev_errno == ENOSPC) {
Jmsg(jcr, M_INFO, 0, _("End of Volume \"%s\" at %u:%u on device %s. Write of %u bytes got %d.\n"),
- dev->VolCatInfo.VolCatName,
+ dev->getVolCatName(),
dev->file, dev->block_num, dev->print_name(), wlen, stat);
}
- Dmsg7(100, "=== Write error. fd=%d size=%u rtn=%d dev_blk=%d blk_blk=%d errno=%d: ERR=%s\n",
- dev->fd(), wlen, stat, dev->block_num, block->BlockNumber,
- dev->dev_errno, strerror(dev->dev_errno));
+ if (debug_level >= 100) {
+ berrno be;
+ Dmsg7(100, "=== Write error. fd=%d size=%u rtn=%d dev_blk=%d blk_blk=%d errno=%d: ERR=%s\n",
+ dev->fd(), wlen, stat, dev->block_num, block->BlockNumber,
+ dev->dev_errno, be.bstrerror(dev->dev_errno));
+ }
ok = terminate_writing_volume(dcr);
if (!ok && !forge_on) {
dev->VolCatInfo.VolCatBlocks++;
dev->EndBlock = dev->block_num;
dev->EndFile = dev->file;
+ dev->LastBlock = block->BlockNumber;
block->BlockNumber++;
/* Update dcr values */
dev->block_num = dcr->EndBlock;
dev->file = dcr->EndFile;
}
+ dcr->VolMediaId = dev->VolCatInfo.VolMediaId;
if (dcr->VolFirstIndex == 0 && block->FirstIndex > 0) {
dcr->VolFirstIndex = block->FirstIndex;
}
DEV_BLOCK *lblock = new_block(dev);
/* Note, this can destroy dev->errmsg */
dcr->block = lblock;
- if (!read_block_from_dev(dcr, NO_BLOCK_NUMBER_CHECK)) {
+ if (!dcr->read_block_from_dev(NO_BLOCK_NUMBER_CHECK)) {
Jmsg(jcr, M_ERROR, 0, _("Re-read last block at EOT failed. ERR=%s"),
dev->errmsg);
} else {
* If we wrote block and the block numbers don't agree
* we have a possible problem.
*/
- if (lblock->VolSessionId == block->VolSessionId &&
- lblock->BlockNumber+1 != block->BlockNumber) {
- Jmsg(jcr, M_ERROR, 0, _(
-"Re-read of last block OK, but block numbers differ. Last block=%u Current block=%u.\n"),
- lblock->BlockNumber, block->BlockNumber);
+ if (lblock->BlockNumber != dev->LastBlock) {
+ if (dev->LastBlock > (lblock->BlockNumber + 1)) {
+ Jmsg(jcr, M_FATAL, 0, _(
+"Re-read of last block: block numbers differ by more than one.\n"
+"Probable tape misconfiguration and data loss. Read block=%u Want block=%u.\n"),
+ lblock->BlockNumber, dev->LastBlock);
+ } else {
+ Jmsg(jcr, M_ERROR, 0, _(
+"Re-read of last block OK, but block numbers differ. Read block=%u Want block=%u.\n"),
+ lblock->BlockNumber, dev->LastBlock);
+ }
} else {
Jmsg(jcr, M_INFO, 0, _("Re-read of last block succeeded.\n"));
}
#endif
}
+/*
+ * If this routine is called, we do our bookkeeping and
+ * then assure that the volume will not be written any
+ * more.
+ */
static bool terminate_writing_volume(DCR *dcr)
{
DEVICE *dev = dcr->dev;
/* Create a JobMedia record to indicated end of tape */
dev->VolCatInfo.VolCatFiles = dev->file;
if (!dir_create_jobmedia_record(dcr)) {
- Dmsg0(190, "Error from create JobMedia\n");
+ Dmsg0(50, "Error from create JobMedia\n");
dev->dev_errno = EIO;
- Jmsg(dcr->jcr, M_FATAL, 0, _("Could not create JobMedia record for Volume=\"%s\" Job=%s\n"),
- dcr->VolCatInfo.VolCatName, dcr->jcr->Job);
+ Jmsg2(dcr->jcr, M_FATAL, 0, _("Could not create JobMedia record for Volume=\"%s\" Job=%s\n"),
+ dcr->getVolCatName(), dcr->jcr->Job);
ok = false;
- goto bail_out;
}
dcr->block->write_failed = true;
if (!dev->weof(1)) { /* end the tape */
Jmsg(dcr->jcr, M_ERROR, 0, _("Error writing final EOF to tape. This Volume may not be readable.\n"
"%s"), dev->errmsg);
ok = false;
- Dmsg0(100, "WEOF error.\n");
+ Dmsg0(50, "Error writing final EOF to volume.\n");
}
if (ok) {
ok = write_ansi_ibm_labels(dcr, ANSI_EOV_LABEL, dev->VolHdr.VolumeName);
dev->VolCatInfo.VolCatParts = dev->num_dvd_parts;
}
- if (!dir_update_volume_info(dcr, false)) {
+ if (!dir_update_volume_info(dcr, false, true)) {
ok = false;
+ Dmsg0(50, "Error updating volume info.\n");
}
- Dmsg1(100, "dir_update_volume_info terminate writing -- %s\n", ok?"OK":"ERROR");
+ Dmsg1(50, "dir_update_volume_info terminate writing -- %s\n", ok?"OK":"ERROR");
/*
* Walk through all attached dcrs setting flag to call
dev->VolCatInfo.VolCatErrors++;
/* This may not be fatal since we already wrote an EOF */
Jmsg(dcr->jcr, M_ERROR, 0, "%s", dev->errmsg);
+ Dmsg0(50, "Writing second EOF failed.\n");
}
-bail_out:
+
dev->set_ateot(); /* no more writing this tape */
- Dmsg1(100, "Leave terminate_writing_volume -- %s\n", ok?"OK":"ERROR");
+ Dmsg1(50, "*** Leave terminate_writing_volume -- %s\n", ok?"OK":"ERROR");
return ok;
}
/* Create a JobMedia record so restore can seek */
if (!dir_create_jobmedia_record(dcr)) {
- Dmsg0(190, "Error from create_job_media.\n");
+ Dmsg0(50, "Error from create_job_media.\n");
dev->dev_errno = EIO;
- Jmsg(jcr, M_FATAL, 0, _("Could not create JobMedia record for Volume=\"%s\" Job=%s\n"),
- dcr->VolCatInfo.VolCatName, jcr->Job);
+ Jmsg2(jcr, M_FATAL, 0, _("Could not create JobMedia record for Volume=\"%s\" Job=%s\n"),
+ dcr->getVolCatName(), jcr->Job);
terminate_writing_volume(dcr);
dev->dev_errno = EIO;
return false;
}
dev->VolCatInfo.VolCatFiles = dev->file;
- if (!dir_update_volume_info(dcr, false)) {
- Dmsg0(190, "Error from update_vol_info.\n");
+ if (!dir_update_volume_info(dcr, false, false)) {
+ Dmsg0(50, "Error from update_vol_info.\n");
terminate_writing_volume(dcr);
dev->dev_errno = EIO;
return false;
dev->VolCatInfo.VolCatParts = dev->num_dvd_parts;
- if (!dir_update_volume_info(dcr, false)) {
+ if (!dir_update_volume_info(dcr, false, false)) {
Dmsg0(190, "Error from update_vol_info.\n");
dev->dev_errno = EIO;
return false;
Dmsg1(100, "Cannot get free space on the device ERR=%s.\n", dev->errmsg);
Jmsg(jcr, M_FATAL, 0, _("End of Volume \"%s\" at %u:%u on device %s "
"(part_size=%s, free_space=%s, free_space_errno=%d, errmsg=%s).\n"),
- dev->VolCatInfo.VolCatName,
+ dev->getVolCatName(),
dev->file, dev->block_num, dev->print_name(),
edit_uint64_with_commas(dev->part_size, ed1), edit_uint64_with_commas(dev->free_space, ed2),
dev->free_space_errno, dev->errmsg);
Dmsg0(100, "==== Just enough free space on the device to write the current part...\n");
Jmsg(jcr, M_INFO, 0, _("End of Volume \"%s\" at %u:%u on device %s "
"(part_size=%s, free_space=%s, free_space_errno=%d).\n"),
- dev->VolCatInfo.VolCatName,
+ dev->getVolCatName(),
dev->file, dev->block_num, dev->print_name(),
edit_uint64_with_commas(dev->part_size, ed1), edit_uint64_with_commas(dev->free_space, ed2),
dev->free_space_errno);
* Read block with locking
*
*/
-bool read_block_from_device(DCR *dcr, bool check_block_numbers)
+bool DCR::read_block_from_device(bool check_block_numbers)
{
bool ok;
- DEVICE *dev = dcr->dev;
+
Dmsg0(250, "Enter read_block_from_device\n");
dev->r_dlock();
- ok = read_block_from_dev(dcr, check_block_numbers);
+ ok = read_block_from_dev(check_block_numbers);
dev->dunlock();
Dmsg0(250, "Leave read_block_from_device\n");
return ok;
* the block header. For a file, the block may be partially
* or completely in the current buffer.
*/
-bool read_block_from_dev(DCR *dcr, bool check_block_numbers)
+bool DCR::read_block_from_dev(bool check_block_numbers)
{
ssize_t stat;
int looping;
- uint32_t BlockNumber;
int retry;
- JCR *jcr = dcr->jcr;
- DEVICE *dev = dcr->dev;
- DEV_BLOCK *block = dcr->block;
+ DCR *dcr = this;
- ASSERT(dev->is_open());
+ if (job_canceled(jcr)) {
+ return false;
+ }
if (dev->at_eot()) {
return false;
looping = 0;
Dmsg1(250, "Full read in read_block_from_device() len=%d\n",
block->buf_len);
+
+// ASSERT(dev->is_open());
+
reread:
if (looping > 1) {
dev->dev_errno = EIO;
return false;
}
-// #define lots_of_debug
-#ifdef lots_of_debug
- if (dev->at_eof() && dev->is_dvd()) {
- Dmsg1(100, "file_size=%u\n",(unsigned int)dev->file_size);
- Dmsg1(100, "file_addr=%u\n",(unsigned int)dev->file_addr);
- Dmsg1(100, "lseek=%u\n",(unsigned int)lseek(dev->fd(), 0, SEEK_CUR));
- Dmsg1(100, "part_start=%u\n",(unsigned int)dev->part_start);
- Dmsg1(100, "part_size=%u\n", (unsigned int)dev->part_size);
- Dmsg2(100, "part=%u num_dvd_parts=%u\n", dev->part, dev->num_dvd_parts);
- Dmsg1(100, "VolCatInfo.VolCatParts=%u\n", (unsigned int)dev->VolCatInfo.VolCatParts);
- Dmsg3(100, "Tests : %d %d %d\n", (dev->VolCatInfo.VolCatParts > 0),
- ((dev->file_addr-dev->part_start) == dev->part_size),
- (dev->part <= dev->VolCatInfo.VolCatParts));
- }
-#endif
-
/* Check for DVD part file end */
if (dev->at_eof() && dev->is_dvd() && dev->num_dvd_parts > 0 &&
dev->part <= dev->num_dvd_parts) {
dev->set_ateof();
return false; /* return eof */
}
+
/* Continue here for successful read */
+
block->read_len = stat; /* save length read */
+ if (block->read_len == 80 &&
+ (dcr->VolCatInfo.LabelType != B_BACULA_LABEL ||
+ dcr->device->label_type != B_BACULA_LABEL)) {
+ /* ***FIXME*** should check label */
+ Dmsg2(100, "Ignore 80 byte ANSI label at %u:%u\n", dev->file, dev->block_num);
+ dev->clear_eof();
+ goto reread; /* skip ANSI/IBM label */
+ }
+
if (block->read_len < BLKHDR2_LENGTH) {
dev->dev_errno = EIO;
Mmsg4(dev->errmsg, _("Volume data error at %u:%u! Very short block of %d bytes on device %s discarded.\n"),
return false; /* return error */
}
- BlockNumber = block->BlockNumber + 1;
+// BlockNumber = block->BlockNumber + 1;
if (!unser_block_header(jcr, dev, block)) {
if (forge_on) {
dev->file_addr += block->read_len;
dcr->EndBlock = dev->EndBlock;
dcr->EndFile = dev->EndFile;
} else {
- uint64_t addr = dev->file_addr + block->read_len - 1;
+ /* We need to take care about a short block in EndBlock/File
+ * computation
+ */
+ uint32_t len = MIN(block->read_len, block->block_len);
+ uint64_t addr = dev->file_addr + len - 1;
dcr->EndBlock = (uint32_t)addr;
dcr->EndFile = (uint32_t)(addr >> 32);
- dev->block_num = dcr->EndBlock;
- dev->file = dcr->EndFile;
+ dev->block_num = dev->EndBlock = dcr->EndBlock;
+ dev->file = dev->EndFile = dcr->EndFile;
}
+ dcr->VolMediaId = dev->VolCatInfo.VolMediaId;
dev->file_addr += block->read_len;
dev->file_size += block->read_len;