Networker

Re: [Networker] Permission denied

2003-01-14 14:51:03
Subject: Re: [Networker] Permission denied
From: Terrence Haupt <Terrence.Haupt AT ABBOTT DOT COM>
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Date: Tue, 14 Jan 2003 13:51:14 -0600
Very good questions!  Your right... I did neglect to give the SAN
information.

I have verified that the tapes are not write protected.

The st.conf was modified many months ago and yes they all have been
reloaded.  The bit set in the st.conf is to turn off the reserve feature
(bad wording on my part sorry).

My san...  the backup san consists of rebranded STK (brocade) switches,
crossroads MDR's all are at the latest and greatest firmware.  I also have
6 of my storage nodes connected to a compaq eva also rebranded compaq
(brocade) switches.  These are also at the latest firmware (acording ot
the vendors).

The HP systems.  I have the admins looking into the kernel parameter that 
affects the scsi reservation.  This parameter is
st_ats_enabled.
This value should be set to zero.  They have not gotten back to me yet..


Terrence R. Haupt
UNIX Systems Administrator
Global Technology Solutions, Abbott Laboratories
Ph: 847-938-2375 Fax: 847-937-4160
Pager: 877-804-5379 (thaupt AT skytel DOT com)
terrence.haupt AT abbott DOT com




Davina Treiber <treiber AT HOTPOP DOT COM>
Sent by: Legato NetWorker discussion <NETWORKER AT LISTMAIL.TEMPLE DOT EDU>
01/14/2003 01:07 PM
Please respond to Legato NetWorker discussion; Please respond to Davina
Treiber


        To:     NETWORKER AT LISTMAIL.TEMPLE DOT EDU
        cc:
        Subject:        Re: [Networker] Permission denied


On Tue, 14 Jan 2003 11:42:27 -0600, Terrence Haupt
<Terrence.Haupt AT ABBOTT DOT COM> wrote:

>Ok folks...  I have a good one.

You're right, it is a tricky one.

>
>My environment
>
>Sun E450 Legato server Running Solaris 8 and Networker 6.1.1 (with
updated
>nsrmmd binaries)
>
>I have many clients and storage nodes 2 jukeboxes a STK 9740 and STK L700
>all with DLT7000 drives.
>
>The L700 has 6 of its drives shared using DDS
>
>The shared nodes are 9 solaris 8 machines and 2 HPUX 11 machines. (all
are
>6.1.1 with updated binaries)
>
>When labeling a tape I get the following error but the label completes
>successfully...
>
>Verifying label, error opening: Permission denied.

Sometimes a permission denied message can mean that the tape is write
protected. I don't think this is the case here since you see the message
on
read rather than write, but is it worth checking.

I think you're right to suspect reserve/release issues though.

>
>When I try to mount a tape manually i get the same error and the tape
>ejects.
>
>When legato tries to use the drive it gets the same error and then the
>tape is stuck in the drive until i manually reach in and pull it out.  I
>checked each drive on each storage node using mt -f status some of the
>drives come back as  write protected or reserved. others do not...  i
manually went out and
>tried to mt -f release each drive and still get these errors...  Has
>anyone ran across this before?
>
>
>Side notes.
>In my st.conf i have set the no reserve bit I have not however set it in
>the stdef.h (but that's used for building your own dev files right?)
>I have also restarted networker on each of the affected storage nodes and
>the server.

First point - have you restarted the server/storage nodes since changing
the
st.conf? It will need a reboot or at the very least a reload of the st
module to pick up any changes.

Second point - I would have thought that you would want to be turning on
reserve/release here, not turning it off. What about the HP machines, are
they using reserve/release? (Sorry I'm not as well up on this aspect of
HP-UX, so don't know how this would be done).

Third point - this is on a SAN right? You haven't given any info about
what
the SAN hardware is. Is the firmware up to date? I remember a couple of
years ago there was a bug in the firmware of Crossroads FC/SCSI routers
that
prevented releases from getting through - could you be seeing something
similar to this?

Hope this is some small help.

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