Michael Osburn <michael.osburn AT echostar DOT com> wrote on 02/09/2010
11:24:01
AM:
> I need to get things confirmed with management first but I think
> that doing the latest
> would work for what I need.
I can't imagine why that wouldn't work (you're saving the same info, just
a few weeks early! :) ), but sometimes management doesn't always see
things the same way.
> I did not see the "-1" option when
> looking at the archive
> host option. Do you mind sharing your script?
It's not something you'd do from the GUI: you would use it with the
archive command from the command line. I actually found it by reading the
source code back when I was trying to figure out how to do this.
The biggest disadvantage is that all of the generated files from the same
host will have the same name. If you want to keep multiple copies of the
archives you may have to either rename the files or put them into
different subdirectories. I asked that this be addressed in the BacukpPC
archive command (have it substitute the proper backup number for the -1),
but the request wasn't followed up on.
Here's the line in the backuppc user's crontab. Note that it must be run
as the backuppc user (or have some other script su it as backuppc).
04 07 * * 6 /data/BackupPC/util/cron_archive localhost 5
And here's cron_archive. It's designed for a Red Hat-based system. The
variables you might need to change are at the top. ARCHIVE_HOST_PATH is
the path to the archive host directory within BackupPC (where the archive
request file will be generated), ARCHIVE_DEST_PATH is the path to store
the generated archive, and BACKUPPC_BIN_PATH is the path to the BackupPC
command files.
#!/bin/sh
# Script to create archive of BackupPC host for OBS Backup Server 2.1
ARCHIVE_HOST_PATH=/data/BackupPC/pc/archive
ARCHIVE_DEST_PATH=/data/archive
BACKUPPC_BIN_PATH=/usr/local/BackupPC/bin
parameters() {
echo "$0 hostname par
where hostname is the host to archve and par is the percentage of
parity
Example: $0 localhost 5"
exit 1
}
if [ -z $1 ]; then
echo "You must include the hostname in the first parameter."
parameters
fi
if [ -z $2 ]; then
echo "You must include the percentage of parity in the second
parameter."
parameters
fi
echo "%ArchiveReq = (
'archiveloc' => '"${ARCHIVE_DEST_PATH}"',
'reqTime' => '946702800',
'BackupList' => [
'-1'
],
'host' => 'archive',
'parfile' => '"$2"',
'archtype' => '0',
'compression' => '/bin/cat',
'compext' => '.raw',
'HostList' => [
'"$1"'
],
'user' => 'backuppc',
'splitsize' => '0000000'
);" > ${ARCHIVE_HOST_PATH}/archiveReq.cron.$$
${BACKUPPC_BIN_PATH}/BackupPC_serverMesg archive backuppc archive
archiveReq.cron.$$
As you can see, the command generates an archive request file (which is
exactly what the BackupPC archive GUI does) and saves it in the archive
host's pc directory. The archive is set up for no splits, no compression,
and a variable amount of parity (some of my hosts are too big to generate
parity in a timely manner). If you want a different style of archive,
simply capture the archive file generated by the GUI and modify the above
information to better match your desired style of archive.
If you have further questions or comments, please feel free to ask. For
the record, the above code is released into the public domain (FWIW), but
I would appreciate it if you sent any corrections or updates my way.
Tim Massey
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