On 01/13 08:51 , David Rotger wrote:
> I use the web interface, when I restore a TAR localhost bakcup, in the
> status section I see:
>
> localhost <http://rfserver2/backuppc/index.cgi?host=localhost> restore
> root 2016-01-13
> 20:00 2016-01-13 19:53
> BackupPC_tarCreate failed
Ok, now's the time to learn to use the command line tools to troubleshoot
problems with BackupPC. The BackupPC_tarCreate command is actually this:
backuppc@archivist-2:~$ /usr/share/backuppc/bin/BackupPC_tarCreate --help
/usr/share/backuppc/bin/BackupPC_tarCreate version [unknown] calling
Getopt::Std::getopts (version 1.07 [paranoid]),
running under Perl version 5.18.2.
Usage: BackupPC_tarCreate [-OPTIONS [-MORE_OPTIONS]] [--] [PROGRAM_ARG1 ...]
The following single-character options are accepted:
With arguments: -e -h -n -p -r -s -b -w
Boolean (without arguments): -L -l -t
Options may be merged together. -- stops processing of options.
Space is not required between options and their arguments.
[Now continuing due to backward compatibility and excessive paranoia.
See 'perldoc Getopt::Std' about $Getopt::Std::STANDARD_HELP_VERSION.]
usage: /usr/share/backuppc/bin/BackupPC_tarCreate [options]
files/directories...
Required options:
-h host host from which the tar archive is created
-n dumpNum dump number from which the tar archive is created
A negative number means relative to the end (eg -1
means the most recent dump, -2 2nd most recent etc).
-s shareName share name from which the tar archive is created
Other options:
-t print summary totals
-r pathRemove path prefix that will be replaced with pathAdd
-p pathAdd new path prefix
-b BLOCKS output write buffer size in 512-byte blocks (default
20; same as tar)
-w readBufSz buffer size for reading files (default 1048576 = 1MB)
-e charset charset for encoding file names (default: value of
$Conf{ClientCharset} when backup was done)
-l just print a file listing; don't generate an archive
-L just print a detailed file listing; don't generate an
archive
So an actual command would look something like this below, where:
-h localhost == the host to restore from
-n -1 == the most recent backup (or you could look at the list of backup
numbers in the web interface to find the backup from a particular date)
-s / == the share to restore from (in the case of a Windows box it might be
'cDrive' or something like that)
/ == the files to restore. in this case, all the files from the root
directory onward
/usr/share/backuppc/bin/BackupPC_tarCreate -h localhost -n -1 -s / /
Note however that this will dump the tar stream straight to STDOUT (i.e.
your terminal). So you'll have to redirect that or stream it elsewhere.
Here's an example of creating a tarball in your current directory (make sure
there's enough space first, using 'df -h').
/usr/share/backuppc/bin/BackupPC_tarCreate \
-h localhost -n -1 -s / / > localhost_restore-2016-01-13.tar
I stuck the '\' in there just because your mail client may wrap lines, and I
wanted to be clear that this is all one line of command.
Or if you'd like to move the backup across the network, you can pipe the
output of BackupPC_tarCreate through netcat and move it to some other
machine without having to put it on the local disk first.
/usr/share/backuppc/bin/BackupPC_tarCreate \
-h localhost -n -1 -s / / | nc host.example.com 8888
On the receiving side, you'd have a netcat process listening and piping the
output to tar, which in the example below will dump the files out onto the
filesystem in the current directory.
nc -l 8888 | tar xvpf -
Experiment with all these a bit, and see what errors you get when you try to
run a really simple restore command like this:
/usr/share/backuppc/bin/BackupPC_tarCreate \
-h localhost -n -1 -s / /etc > /dev/null
To be clear, you don't have to break the above into two lines, and you don't
need the '\' if you don't break it into two lines, that's just for clarity
since I don't know how your mail client will format that line. Also the
redirection to /dev/null is just so your screen and filesystem don't get
filled up while you figure out what may be wrong. If you like you can
redirect to a file.
Sorry if some of this is very low-level, I don't know what your skill level
is.
--
Carl Soderstrom
Systems Administrator
Real-Time Enterprises
www.real-time.com
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