Re: [BackupPC-users] UID/GID of restored files out of sync with those on server

[Andy <an...@be...>]

Andy wrote:

> The UIDs and GIDs from the restored directory appear to be out of sync 
> with those of the original directory.
> 
> Have I done something wrong, or should I be concerned that there is a 
> problem with the meta-data stored in BackupPC? 

I am the OP. Having just run a full backup and done some further 
analysis I am replying to my own message with additional information.

Below I include a sample from the XFER log for the most recent backup:

   create d 700     103/0        4096 var/spool/postfix/active
   create d 700     103/0        4096 var/spool/postfix/corrupt
   create d 700     103/0        4096 var/spool/postfix/defer
   create d 700     103/0        4096 var/spool/postfix/deferred
   create d 755       0/0        4096 var/spool/postfix/etc
   create d 700     103/0        4096 var/spool/postfix/flush
   create d 700     103/0        4096 var/spool/postfix/hold
   create d 700     103/0        4096 var/spool/postfix/incoming
   create d 755       0/0        4096 var/spool/postfix/lib
   create d1730   103/106        4096 var/spool/postfix/maildrop
   create d 755     103/0        4096 var/spool/postfix/pid
   create d 700     103/0        4096 var/spool/postfix/private
   create d2710   103/106        4096 var/spool/postfix/public
   create d 700     103/0        4096 var/spool/postfix/saved
   create d 700     103/0        4096 var/spool/postfix/trace
   create d 755       0/0        4096 var/spool/postfix/usr

And a directory listing, this time using ls -lan to show numeric UIDs 
and GIDs:

   ~# ls /var/spool/postfix -lan

   drwx------  18 103   0 4096 Apr 18  2005 active
   drwx------  18 103   0 4096 Jul 25 04:00 bounce
   drwx------   2 103   0 4096 Apr 15  2005 corrupt
   drwx------  18 103   0 4096 Jun 14 17:14 defer
   drwx------  18 103   0 4096 Jun 14 17:14 deferred
   drwxr-xr-x   2   0   0 4096 Oct 31 17:16 etc
   drwx------   9 103   0 4096 Oct 25 15:51 flush
   drwx------   2 103   0 4096 Apr 15  2005 hold
   drwx------  18 103   0 4096 Dec  2 15:53 incoming
   drwxr-xr-x   2   0   0 4096 Oct 31 17:16 lib
   drwx-wx--T   2 103 106 4096 Dec  2 06:36 maildrop
   drwxr-xr-x   2 103   0 4096 Oct 31 17:17 pid
   drwx------   2 103   0 4096 Oct 31 17:16 private
   drwx--s---   2 103 106 4096 Oct 31 17:16 public
   drwx------   2 103   0 4096 Apr 15  2005 saved
   drwx------   2 103   0 4096 Apr 15  2005 trace
   drwxr-xr-x   3   0   0 4096 Apr 15  2005 usr

I see that the UIDs and GIDs recorded in the XFER log match those from 
the directory listing. Great.

I have downloaded and restored the tar archive from the most recent 
backup, this time using the -p option to preserve permissions:

   ~# tar xpvf restore.tar

Yet when I list the restored directory I still see differing UIDs and GIDs:

   ~# ls /root/postfix -lan

   drwx------  18 105   0 4096 Dec  2 16:01 active
   drwx------  18 105   0 4096 Dec  2 16:01 bounce
   drwx------   2 105   0 4096 Apr 15  2005 corrupt
   drwx------  18 105   0 4096 Dec  2 16:01 defer
   drwx------  18 105   0 4096 Dec  2 16:01 deferred
   drwxr-xr-x   2   0   0 4096 Dec  2 16:01 etc
   drwx------   9 105   0 4096 Dec  2 16:01 flush
   drwx------   2 105   0 4096 Apr 15  2005 hold
   drwx------  18 105   0 4096 Dec  2 16:01 incoming
   drwxr-xr-x   2   0   0 4096 Dec  2 16:01 lib
   drwx-wx--T   2 105 107 4096 Dec  2 06:36 maildrop
   drwxr-xr-x   2 105   0 4096 Dec  2 16:01 pid
   drwx------   2 105   0 4096 Oct 31 17:16 private
   -rw-------   1   0   0 1024 Dec  2 13:54 prng_exch
   drwx--s---   2 105 107 4096 Dec  2 16:01 public
   drwx------   2 105   0 4096 Apr 15  2005 saved
   drwx------   2 105   0 4096 Apr 15  2005 trace
   drwxr-xr-x   3   0   0 4096 Dec  2 16:01 usr

I dont understand why. If this is the result of my own stupidity then 
please feel free to point it out.

Otherwise, does anyone have any suggestions?

Thanks, Andy