--- On Fri, 8/20/10, Loren Serfass <lorenserfass331 AT gmail DOT com> wrote:
From: Loren Serfass <lorenserfass331 AT gmail DOT com>
Subject: [BackupPC-users] set-up question: how do I avoid "Cannot open:
Permission denied" and "0 bytes"? Please help!
To: backuppc-users AT lists.sourceforge DOT net
Date: Friday, August 20, 2010, 9:50 PM
Hello,
I am a new user of this software and new to this list. Apologies for the
long email, but I want to make it clear exactly where I am in order to avoid
wasting your time with back-and-forth. Please be patient and help me, because
I have spent hours and hours following the provided instructions, reading user
forums, and experimenting. Posting this is my very last resort. If you find a
glaring gap in my knowledge or something obvious that I did wrong, I would be
overjoyed.
For background: I am working with BackupPC version 3.1.0-4, installed by
synaptic onto Debian lenny (I'd rather not install from the more recent
source). I am trying to back up my internal hard drive onto an external hard
drive which is mounted at /var/lib/backuppc.
I have read the documentation, the ssh setup instructions, and the
localhost instructions from the following websites.
http://backuppc.sourceforge.net/faq/BackupPC.html
http://backuppc.sourceforge.net/faq/ssh.html
http://backuppc.sourceforge.net/faq/localhost.html
My progress so far:
---BackupPC starts properly when run from the root account and I can log onto
the interface in a web browser. (I get "start-stop-daemon: command not found"
when I run it as the backuppc user.)
---After following instructions, the ssh seems to be set up properly, since
running "ssh -l root localhost whoami" as the backuppc user prints just "root."
(This is the test given in the ssh instructions).
---I have enabled the backuppc user to use sudo with the commands /bin/tar and
/usr/bin/rsync. I'm pretty sure these are working correctly because when I am
logged into a terminal as backuppc I can still tar a file that has -rw-------
permissions and root ownership.
---I have tried both tar and rsync as the XferMethod. I have changed the
TarClientCmd and RsyncClientCmd to use sudo. I tried to do it as described on
the localhost FAQ (though this is one of the more difficult parts for me).
---There are cpool, log, pc, pool, and trash directories in /var/lib/backuppc.
Each has permissions drwxr-x--- Each is owned by backuppc and has group
backuppc.
---I have excluded /var/lib/backuppc from the backups, and made a few other
minor changes.
HOWEVER:
When I request a full backup of localhost, I STILL get "Cannot open: Permission
denied" errors in the log file. The problem files all have -rw-------
permissions, so it seems that tar isn't working properly when run through the
program although it works fine on that type of file when run by the backuppc
user in isolation. I have been mostly starting backuppc when logged in as
root, by the way. That seems counterintuitive to me, but when I start it when
logged on the backuppc user, I get "start-stop-daemon: command not found".
Most frustrating, the log file always ends with "...full backup X complete,
2891 files, 0 bytes, 37 xferErrs (0 bad files, 0 bad shares, 37 other)". The
"0 bytes" part seems to mean that it didn't back up ANY data. And it only
takes a few seconds, so I know that it's not backing up. I get these same
problems after many backups and also after reinstalling/reconfiguring, so it's
very consistent.
Perplexingly, it seems to be trying to back up only the /etc directory. Why
isn't it doing the whole / directory? That's what I tried to set up. I just
want to back up my whole hard drive onto an external drive.
Are these problems easy to solve, or should I switch away from backuppc? If
so, could you recommend something easy?
Thank you for your time.
------------------------------------------------------------------------------
Hi Loren;
Before delving to far and sorry a back-forth question... What type of external
HDD do you have? If it is USB, what file system is it formatted with?
Allen...
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