/*
* Mount a DVD device, then scan to find out how many parts
* there are.
*/
int find_num_dvd_parts(DCR *dcr)
{
DEVICE *dev = dcr->dev;
int num_parts = 0;
if (!dev->is_dvd()) {
return 0;
}
if (dev->mount(1)) {
DIR* dp;
struct dirent *entry, *result;
int name_max;
int len = strlen(dcr->getVolCatName());
/* Now count the number of parts */
name_max = pathconf(".", _PC_NAME_MAX);
if (name_max < 1024) {
name_max = 1024;
}
if (!(dp = opendir(dev->device->mount_point))) {
berrno be;
dev->dev_errno = errno;
Dmsg3(29, "find_num_dvd_parts: failed to open dir %s (dev=%s), ERR=%s\n",
dev->device->mount_point, dev->print_name(), be.bstrerror());
goto get_out;
}
entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
Dmsg1(100, "Looking for Vol=%s\n", dcr->getVolCatName());
for ( ;; ) {
int flen;
bool ignore;
if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
dev->dev_errno = EIO;
Dmsg2(129, "find_num_dvd_parts: failed to find suitable file in dir %s (dev=%s)\n",
dev->device->mount_point, dev->print_name());
break;
}
flen = strlen(result->d_name);
ignore = true;
if (flen >= len) {
result->d_name[len] = 0;
if (strcmp(dcr->getVolCatName(), result->d_name) == 0) {
num_parts++;
Dmsg1(100, "find_num_dvd_parts: found part: %s\n", result->d_name);
ignore = false;
}
}
if (ignore) {
Dmsg2(129, "find_num_dvd_parts: ignoring %s in %s\n",
result->d_name, dev->device->mount_point);
}
}
free(entry);
closedir(dp);
Dmsg1(29, "find_num_dvd_parts = %d\n", num_parts);
}
get_out:
dev->set_freespace_ok();
if (dev->is_mounted()) {
dev->unmount(0);
}
return num_parts;
}
/*
* Note!!!! Part numbers now begin at 1. The part number is
* suppressed from the first part, which is just the Volume
* name. Each subsequent part is the Volumename.partnumber.
*
* Write a part (Vol, Vol.2, ...) from the spool to the DVD
* This routine does not update the part number, so normally, you
* should call open_next_part()
*
* It is also called from truncate_dvd to "blank" the medium, as
* well as from block.c when the DVD is full to write the last part.
*/
bool dvd_write_part(DCR *dcr)
{
DEVICE *dev = dcr->dev;
POOL_MEM archive_name(PM_FNAME);
/*
* Don't write empty part files.
* This is only useful when growisofs does not support write beyond
* the 4GB boundary.
* Example :
* - 3.9 GB on the volume, dvd-freespace reports 0.4 GB free
* - Write 0.2 GB on the volume, Bacula thinks it could still
* append data, it creates a new empty part.
* - dvd-freespace reports 0 GB free, as the 4GB boundary has
* been crossed
* - Bacula thinks he must finish to write to the device, so it
* tries to write the last part (0-byte), but dvd-writepart fails...
*
* There is one exception: when recycling a volume, we write a blank part
* file, so, then, we need to accept to write it.
*/
if (dev->part_size == 0 && !dev->truncating) {
Dmsg2(29, "dvd_write_part: device is %s, won't write blank part %d\n", dev->print_name(), dev->part);
/* Delete spool file */
make_spooled_dvd_filename(dev, archive_name);
unlink(archive_name.c_str());
dev->set_part_spooled(false);
Dmsg1(29, "========= unlink(%s)\n", archive_name.c_str());
Dsm_check(400);
return true;
}
POOL_MEM ocmd(PM_FNAME);
POOL_MEM results(PM_MESSAGE);
char* icmd;
int status;
int timeout;
char ed1[50];
dev->clear_freespace_ok(); /* need to update freespace */
Dsm_check(400);
Dmsg3(29, "dvd_write_part: device is %s, part is %d, is_mounted=%d\n", dev->print_name(), dev->part, dev->is_mounted());
icmd = dev->device->write_part_command;
dev->edit_mount_codes(ocmd, icmd);
/*
* original line follows
* timeout = dev->max_open_wait + (dev->max_part_size/(1350*1024/2));
* I modified this for a longer timeout; pre-formatting, blanking and
* writing can take quite a while
*/
/* Explanation of the timeout value, when writing the first part,
* by Arno Lehmann :
* 9 GB, write speed 1x: 6990 seconds (almost 2 hours...)
* Overhead: 900 seconds (starting, initializing, finalizing,probably
* reloading 15 minutes)
* Sum: 15780.
* A reasonable last-exit timeout would be 16000 seconds. Quite long -
* almost 4.5 hours, but hopefully, that timeout will only ever be needed
* in case of a serious emergency.
*/
if (dev->part == 1) {
timeout = 16000;
} else {
timeout = dev->max_open_wait + (dev->part_size/(1350*1024/4));
}
Dmsg2(20, "Write part: cmd=%s timeout=%d\n", ocmd.c_str(), timeout);
status = run_program_full_output(ocmd.c_str(), timeout, results.addr());
Dmsg2(20, "Write part status=%d result=%s\n", status, results.c_str());
dev->blank_dvd = false;
if (status != 0) {
Jmsg2(dcr->jcr, M_FATAL, 0, _("Error writing part %d to the DVD: ERR=%s\n"),
dev->part, results.c_str());
Mmsg1(dev->errmsg, _("Error while writing current part to the DVD: %s"),
results.c_str());
Dmsg1(100, "%s\n", dev->errmsg);
dev->dev_errno = EIO;
if (!dev->truncating) {
dcr->mark_volume_in_error();
}
Dsm_check(400);
return false;
}
Jmsg(dcr->jcr, M_INFO, 0, _("Part %d (%lld bytes) written to DVD.\n"), dev->part, dev->part_size);
Dmsg3(400, "dvd_write_part: Part %d (%lld bytes) written to DVD\nResults: %s\n",
dev->part, dev->part_size, results.c_str());
dev->num_dvd_parts++; /* there is now one more part on DVD */
dev->VolCatInfo.VolCatParts = dev->num_dvd_parts;
dcr->VolCatInfo.VolCatParts = dev->num_dvd_parts;
Dmsg1(100, "Update num_parts=%d\n", dev->num_dvd_parts);
/* Delete spool file */
make_spooled_dvd_filename(dev, archive_name);
unlink(archive_name.c_str());
dev->set_part_spooled(false);
Dmsg1(29, "========= unlink(%s)\n", archive_name.c_str());
Dsm_check(400);
/* growisofs umounted the device, so remount it (it will update the free space) */
dev->clear_mounted();
dev->mount(1);
Jmsg(dcr->jcr, M_INFO, 0, _("Remaining free space %s on %s\n"),
edit_uint64_with_commas(dev->free_space, ed1), dev->print_name());
Dsm_check(400);
return true;
}