Amanda-Users

Re: Permission denied errors

2002-09-28 00:36:40
Subject: Re: Permission denied errors
From: Vijay <vijayb AT ooty.tenet.res DOT in>
To: amanda-users AT amanda DOT org
Date: Sat, 28 Sep 2002 09:40:08 +0530
try restarting nfs and try mounting again from the client.
hopfully this should work.

vijay


On Friday 27 September 2002 07:26 pm, you wrote:
> no_root_squash doesn't seem to work.  Should the machine be re-booted
> for the change to take effect?  Your help is appreciated.
>
> Thanks,
> Ashwin.
>
> Frank Smith wrote:
> > --On Friday, September 20, 2002 11:43:51 -0400 Ashwin Bijur
> >
> > <abijur AT craft-tech DOT com> wrote:
> >> We use amanda 2.4.2p2 on Red Hat Linux 7.3.  We have nfs mounted a
> >> directory on the amanda server called /xtreme23/scratch.  Some of the
> >> subdirectories and files under the scratch directory have permission
> >> 600.  The /etc/exports file on the xtreme23
> >> machine has the scratch directory exported with read and write
> >> permissions (/scratch *(rw)).  When we run amanda, we get an error
> >> message saying "Permission Denied" for these files.  Now as
> >> user=amanda and group=disk, we should be able to backup these
> >> files.  What are we doing wrong?
> >
> > I'm assuming you are using tar (since I don't think you can use dump
> > on an NFS mount).  Amanda uses the runtar wrapper script, which is
> > suid root so that tar can run as root (since tar accesses via the
> > filesystem it has to run as root to access all the files).
> >  Most OS's map NFS access requests from UID 0 (root) to nobody
> > or some other non-root user for security reasons.  You probably
> > need to change your export options on xtreme23 to include the
> > no_root_squash option (or whatever its called on the NFS server's
> > OS) for the export to the Amanda server so that root on the Amanda
> > server has root access to /xtreme23/scratch, so tar can see all of
> > the files.
> >
> > Frank
> >
> >> Thanks in advance,
> >> Ashwin Bijur
> >> Assistant Systems Administrator.
> >
> > --
> > Frank Smith
> > fsmith AT hoovers DOT com
> > Systems Administrator                                     Voice:
> > 512-374-4673
> > Hoover's Online                                             Fax:
> > 512-374-4501

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