I'm moving this message over to bacula-devel which is more appropriate
for discussing the changes.
Other comments below
-----Original Message-----
From: Ruben Lopez [mailto:r.lopez < at > br...]
Sent: 14 March 2007 14:56
To: Richard Mortimer
Cc: bacula-users < at > li...
Subject: Re: [Bacula-users] Bacula is not asking for DVDs
Hi Richard,
I will try to modify bacula by myself.
Excellent.
If I make any progress I will
send you a patch Could you give me any advice on where to
start looking
at the code to concentrate on this problem?
Good question. You probably need to get a decent debug log from
the SD to get a good idea as to what the problem is (-d 200 is
probably ok). The log snippet that you posted suggested that it
was trying to write to the DVD when it failed. That is probably
too late to catch the error and fail gracefully and any fix is
likely to be needed in the mount code.
The place to start is probably in src/stored/mount.c the
mount_next_write_volume function is what will fail gracefully
and ask the sysop to mount a new volume (look for
dir_ask_sysop_to_mount_volume(dcr) around line 89 and line 161).
I think that it will be try_autolabel that actually fails when
there is no DVD.
Basically I suggest that you get the SD debug log and look for
any messages from mount_next_write_volume and try_autolabel.
Another thing to look for is a call to the freespace command.
That is probably a good place to hook into if no disk is present.
As for the fix I suspect that dvd-handler needs to be modified
to return a well known error code/string from the freespace
command. Then the bit around mount/autolabel needs modifying to
not let bacula start writing/labelling a volume if no disk is
present.
Richard
Could this be solved
directly in the dvd-handler script or should I modify the bacula core?
Thanks a lot!
Richard Mortimer wrote:
Hi,
-----Original Message-----
From: bacula-users-bounces < at > li...
[mailto:bacula-users-bounces < at > li...] On Behalf
Of Ruben Lopez
Sent: 14 March 2007 10:45
To: bacula-users < at > li...
Subject: Re: [Bacula-users] Bacula is not asking for DVDs
I'm still blocked with this problem, does anybody know at least if
bacula should ask me for DVD's or if the DVD must be inserted
into the
drive before issuing the backup job?
It looks like you found a corner case that never got tested. I
have tested extensively with DVDs (blank and used) in the drive
and all works but I probably never tested without a DVD in the
drive.
You should be able to get working by inserting a DVD before starting
a backup and ensuring that there is always a DVD in the
drive. As for
your error it looks like we need to add a bit of code to catch the
no DVD in drive case. I don't have time to do that at the moment so
I suggest that you log a bug on
http://bugs.bacula.org so that it
does not get forgotten.
Regards
Richard
Thanks
Ruben Lopez wrote:
Hi,
We have bacula running quite well, and it's doing backups
to tape and
disk seamlessly. But when trying to use DVD's we have found
a problem,
we tried leaving the DVD drive empty, to test if bacula
asks for a DVD,
and we get this message instead:
08-Mar 10:59 wks188-sd: test-dvd-Job.2007-03-08_10.59.08
Fatal error:
dvd.c:263 Error writing part 1 to the DVD: ERR=Error while
writing part
file: Cannot get media info from dvd+rw-mediainfo || errno
= 0 (Success)
I tried the dvd-handler directly and in fact it gives the
same message:
Cannot get media info from dvd+rw-mediainfo || errno = 0 (Success)
dvd+rw-mediainfo /dev/hdc says this:
INQUIRY: [HL-DT-ST][DVDRAM GSA-4167B][DL11]
GET [CURRENT] CONFIGURATION:
no media mounted, exiting...
And exits with an exit status of 1 (not 0), which makes
dvd-handler fail
also.
I've the patched version of dvd+rw-tools, although it
doesn't really
matter because the patch only affects growisofs.
This is my device configuration:
Device {
Name = "DVD-Writer"
Media Type = DVD
Archive Device = /dev/hdc
LabelMedia = yes; # lets Bacula label
unlabeled media
Random Access = Yes;
AutomaticMount = yes; # when device
opened, read it
RemovableMedia = yes;
AlwaysOpen = no;
MaximumPartSize = 800M;
RequiresMount = yes;
MountPoint = /media/disk;
MountCommand = "/bin/mount -t iso9660 -o ro %a %m";
UnmountCommand = "/bin/umount %m";
SpoolDirectory = /disks/wks188d1/temp;
WritePartCommand = "/etc/bacula/dvd-handler %a write %e %v"
FreeSpaceCommand = "/etc/bacula/dvd-handler %a free"
}
And this is my pool configuration:
Pool {
Name = "DVD_CD"
LabelFormat = CD
Pool Type = Backup
AutoPrune = no
Recycle = no
}
Any idea?
Thanks in advance.
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