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Re: [Bacula-users] Volume corrupt?
2016-07-04 04:54:40
To get around the problem, you must do
three things:
1. Specify the volume name as -V Full-0590 on the command line.
2. Add -c <path>/bacula-sd.conf to the command line
3. After the -V Full-xxx put the name of the Device in the Device
resource that contains the path to the volume in the ArchiveDevice
directive.
That should allow bls to work. You can try first point it to a
volume that is not broken. I suggest that you start by also using
the -k option. That should list only blocks.
Even with all that, if the Volume is filled with zeros, you might
not get very far.
Simply doing a Verify Volume run periodically (e.g. once a week)
would probably be sufficient. I'll leave it to the list to help
you with that problem.
I am going to think about putting a "prototype" of such a Verify
job into the default bacula-dir.conf file. I do know that a
number of Bacula Systems enterprise customers regularly run
verifies, and a few even do "random" file restores.
Good luck on recovering something.
Best regards,
Kern
On 07/04/2016 10:42 AM, Erwan RIGOLLOT wrote:
I have try it :
bls -p Full-0590
I get this:
bls: butil.c:283-0 Could not find device
"Full-0590" in config file bacula-sd.conf.
04-juil. 10:34 bls JobId 0: Fatal error:
butil.c:169 Cannot find device "Full-0590" in config file
bacula-sd.conf.
What I have to do ?
I see a new feature in bacula 7.4: “Verify
Volume Data”
If I understand well that verifies that the
volumes are not corrupted?
Can we check all the volumes of a storage
resource ?
Thanks again
Best regards,
Hmm. It does not sound too good. I am
sorry to hear that you only find zeros everywhere. Bacula
cannot do much with zeros :-(
Still, I would suggest that you try "bls -p File" without
the bsr file. That way, it will attempt to
look at everything. If the -p option does not resolve the
missing label, use dd to copy about 300 bytes from a valid
volume. There may be something somewhere in the file that
could be useful and perhaps recovered. I am not sure that
Bacula can read through a bunch of zeros though ...
Best regards,
Kern
On 07/04/2016 09:55 AM, Erwan RIGOLLOT wrote:
Hi
Kern,
Thanks a lot for your help.
I try that:
bls -p -b /etc/bacula/read.bsr File
I get that:
Error: block_util.c:308 Volume data error at
0:0! Wanted ID: "BB02", got "". Buffer discarded.
When I use od to display file, I see only 0
everywhere in the file.
I think it is lost forever.
But, I don’t know when my files have become
corrupt ….
Thank for your help
Best regards;
The first thing to do is see what
physical size your Volume is as compared to what the
catalog thinks it is. If the volume is very small, some
one has truncated it, otherwise, probably the beginning of
the Volume was damaged either by some program or by a bad
disk block.
You might try examining the Volume with bls, and in
particular with the -p option which should make bls ignore
a number of possible error conditions. If bls can read
the volume, then you may be able to read it by running
bacula-sd with the -p option, or by using bextract ...
If the beginning of the volume has been damaged, it could
also be possible to manually copy a few bytes (probably
about 20) from some valid Volume so that Bacula or one of
the utilities can recognize it as a Bacula volume. The
whole volume label is typically between 100-200 bytes, but
only the very first few bytes are needed so that Bacula
can recognize it.
Best regards,
Kern
On 07/02/2016 12:46 PM, Erwan RIGOLLOT wrote:
Hello,
Anyone have an idea ?
Thanks
Hi all
I need help. I have to restore files
from my backup.
My bacula makes backup to volume type
file.
I get this error :
JobId 3928: Error:
block_util.c:308 Volume data error at 0:0!
Wanted ID: "BB02", got "". Buffer discarded.
JobId 3928: Warning:
acquire.c:276 Read acquire: Requested Volume "Full-0590"
on file device "File-***"
(/Backup/**/Bacula/) is not a
Bacula labeled Volume, because: ERR=block_util.c:308
Volume data error at 0:0! Wanted ID: "BB02", got
"". Buffer discarded.
Can you help me ?
Thanks
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