[rear-users] backup up to a local file

Jeremy Laidman jlaidman at rebel-it.com.au
Thu Jan 15 00:24:40 CET 2015

I don't know that you're doing anything wrong as such, but I'm no expert in
this.  I suspect a work-around is to make sure BACKUP_URL is not on the
root filesystem, such has having /home on its own filesystem, or (assuming
sufficient RAM) setting BACKUP_URL=file:///tmp/rear-localhost.iso, or
having the target on a network-mounted filesystem.

This error message comes from 40_automatic_exclude_recreate.sh.  It think
what it's trying to do is to avoid including the output ISO as part of the


On 15 January 2015 at 00:19, JB <general at itpsg.com> wrote:

> I'm successfully using rear for USB backup and it's working really well!
> I'm super happy with it.  So far it's simpler to setup and get working then
> Mondo which I'm coming from since it still has major issues on Fedora 20
> and rear seems to be really distribution agnostic which is excellent, so
> thank you so much for the great software.
> However, I'm having problems making a backup of my system and storing it
> to a local file.  I need the backup to be manged as an ISO file and it will
> not necessarily always be written to DVD, but it might.  I keep getting
> this error:
> Relax-and-Recover 1.16.1 / Git
> Using log file: /var/log/rear/rear-localhost.log
> ERROR: Making backup on / is forbidden. Use an external device!
> Aborting due to an error, check /var/log/rear/rear-localhost.log for
> details
> Terminated
> Here is my /etc/rear/local.conf file:
> BACKUP_URL=file:///home/testuser/backups/rear-localhost.iso
> ISO_DIR=/home/testuser/backups/
> '/home/testuser/backups/' '/sys' '/root/.ssh/known_hosts'
> '/root/.ssh/known_hosts2' '/root/.ccache' '/home/testuser/.ccache'
> '/home/testuser/.ssh/known_hosts' '/home/testuser/.ssh/known_hosts2'
> '/dev' '/selinux' '/var/cache/ccache' 'var/cache/yum' '/usr/local/src'
> '/usr/share/doc' '/var/log/messages' '/var/log/maillog'
> '/var/log/Xorg.0.log' '/var/log/Xorg.0.log.old' '/var/log/secure'
> '/usr/src/kernels' '/sys' '/dev' '/proc' )
> What am I doing wrong here?
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