Re: crontab use in chroot 32-bit environment ?

["James D. Freels" <freelsjd@ornl.gov>]

More specifically, here is my problem:

Under 32-bit chroot environment, I issue the command to backup my system(s) using amanda:

/usr/bin/amdump new

and all works as expected.

Under the 64-bit environment, I issue the following command

dchroot -c ia32 /usr/bin/amdump new

However, the command fails and the system hangs and behaves in exactly the same manner that it would fail as if the command were run in 64-bit native mode.  Note, I have submitted a bug report to this effect under the amanda-server package.  What I am trying to do, in effect, is a work around to this bug.

What I would like to do is set this up so that I do not have to run amdump interactively in order to work, i.e. crontab from the 64-bit environment.

I suspect that amdump must be subsequently calling something from the 64-bit; i.e., by entering dchroot, do all subsequent calls to executables remain in the chroot environment ?

On Wed, 2005-11-09 at 11:47 -0500, Lennart Sorensen wrote:
> On Wed, Nov 09, 2005 at 11:02:13AM -0500, James D. Freels wrote:
> > I set up a crontab for user backup (to run amanda) in the chroot 32-bit
> > environment.  It does not seem to run.  Is it a requirement to run
> > crontab from the 64-bit home environment and then include the 32-bit
> > instructions within that crontab  (from root) ?  There are some bugs in
> > the ananda-server package that require it to run in 32-bit mode.  I am
> > getting ready to submit a bug report about this.
>
> Normally there are no daemons running in the chroot, since well the init
> scripts are never run for the chroot.
>
> You can certainly add things to cron in the main system that runs chroot
> things.  Something like this might work:
>
> 1 2 * * * dchroot -options command
>
> With appropriate dchroot setup and options for running the command in
> the chroot.
>
> The crond doesn't know about the chroot, and the crond in the chroot
> isn't running, so your system is behaving normally.
>
> Len Sorensen

-- 
James D. Freels, Ph.D.
Oak Ridge National Laboratory
freelsjd@ornl.gov