Hi,
Rob Owens wrote on 19.11.2007 at 09:15:44 [Re: [BackupPC-users] BUPC data on
external h.d. produces link errors]:
> Wayne Wynn wrote:
> > I have BackupPC (BUPC) running on an Ubuntu Gutsy (7.10) box. The
> > Filesystem is on a 37 GB SCSI RAID array and the BUPC data is on a 160
^^^^^^^^^^^^^
> > GB external SATA drive.
what exactly did you do? Mount the partition somewhere? Symlink something?
> > When the localhost is backed up, it appears successful except for a lot
> > of link errors. My searching so far seems to have led to the conclusion
> > that these errors are because the SATA drive and the Filesystem drive
> > use different file systems: ext3 and ext2.
> >
> > 1. Is that true?
No.
> [...] supposedly ext2 can be converted to
> ext3 without losing or moving your data.
'tune2fs -j'. See the man page. You probably have to unmount the file system
(though I'm not positive about that), which may be difficult for / or /usr
or /var. You can mount an ext3 FS as ext2 if you need to use a non-ext3-aware
kernel at some point for some reason, if that is what you're worried about.
You should just make sure the FS was cleanly unmounted after last being
mounted (as ext3).
> > 2. If so, will making the external SATA drive ext2 solve the problem?
No.
> > 3. What alternative solutions are there? (E.g., moving /var/lib/Backuppc
> > to the external drive? How?)
Well, the whole of /var/lib/Backuppc needs to be on *one* file system. Most
simple solution: mount your destination partition on /var/lib/Backuppc
*before* installing BackupPC. If the backups you have done so far aren't
important, I suggest you start over, because you probably won't be able to
clean up the effects of the link failures, i.e. pooling won't work for the
backup(s) you have done so far. The data should probably be ok, but it will
consume more space than it should until these backups expire. No future
backup would re-use any of the files stored so far.
If you are going to start over, it will probably suffice to stop the daemon,
make /var/lib/Backuppc an empty directory on the SATA drive, owned by the
backuppc user (or whatever user the daemon is running as), and then restart
the daemon. It should re-create any directories it needs.
If you want to keep the backups you've done so far, you'll need to copy
things or move them around on the SATA disk, depending on where they are
now. If you can't figure out what you need to do, you'll need to describe in
more detail what your situation is now.
Regards,
Holger
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