Chris Horn writes:
> I have been trouble getting BackupPC to do a proper tar incremental
> backup. The problem seems to be with tar and the $incrDate format.
> my setup is all on localhost, with no SSH, or other remote access.
>
> Here is some sample log output:
>
> ----- SNIPPET OF LOG -----
>
> Contents of file /var/lib/backuppc/pc/localhost/XferLOG.93.z, modified
> 2005-08-08\ 12:31:15
>
> Running: /usr/bin/sudo /usr/local/bin/backuppc-tar -v -f - -C /bin --totals
> --newer='2005-08-02 19:00:00' .
> Xfer PIDs are now 11565,11564
> /bin/tar: Substituting 1901-12-13 15:45:52 for unknown date format
> `\'2005-08-02'
> /bin/tar: 19\:00\:00': Cannot stat: No such file or directory
> Total bytes written: 3164160 (3.1MiB, 2.1MiB/s)
> /bin/tar: Error exit delayed from previous errors
> Tar exited with error 512 () status
> create 755 0/0 0 .
> pool 755 0/0 625228 bash
> pool 755 0/0 4 rbash
> pool 755 0/0 4 sh
> pool 755 0/0 13848 readlink
> pool 755 0/0 11036 run-parts
> pool 755 0/0 5620 tempfile
> pool 755 0/0 5576 mktemp
> pool 755 0/0 31404 chgrp
>
> ----- END SNIPPET OF LOG -----
>
> As you can see, the tar command is confused by the date format. Here I've
> modified the $Conf{TarIncrArgs} to put the date in single quotes. The
> specific
> modification I made was to make the define look like this:
>
> $Conf{TarIncrArgs} = '--newer=\'$incrDate\' $fileList';
The quotes won't do the right thing because BackupPC doesn't
use a shell to execute these commands.
> This was because when I just used:
>
> $Conf{TarIncrArgs} = '--newer=$incrDate $fileList';
>
> The error log looked like something along these lines:
>
> /bin/tar: Treating date `2005-08-02' as 2005-08-02 00:00:00 + 0 nanoseconds
> /bin/tar: 19\:00\:00: Cannot stat: No such file or directory
>
> Which led me to believe that the tar command was treating the hour portion of
> the date as a file argument.
Perhaps the issue is with /usr/local/bin/backuppc-tar. Is this a
perl or shell script, or just a renamed gnu tar binary?
If it a shell script then it is probably re-breaking args at
whitespace. If so, you need $incrDate+ instead of $incrDate.
Craig
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