remote tape with ontape (dd command) fail after op
A user backing up IDS 9.21 on Solaris with ontape to a remote tape drive (TAPEDEV gestion:/dev/rmt/2) suddenly got "dd: /dev/rmt/2u: open: Permission denied" after OpenSSH was installed on the tape host, even though manual rsh/dd commands still worked. Suggestions in the thread: test a remote dd directly against /dev/rmt/2 to rule out device permission problems, note that ontape runs as whichever user invokes it (not root), and run it via su informix -c. The poster fixed a separate root rsh issue via .rhosts but called it a false trail; no resolution to the actual ontape/dd failure is recorded.
Auto-generated by DrWatson from the posts below — may be imperfect; read the full thread.
Hi:
Until now I had been archiving our database with ontape throught remote tape
connecting to another host called gestion.
The onconfig parameter is:
TAPEDEV gestion:/dev/rmt/2
Yesterday I install openssh in gestion (the tape host) and now I get dd:
Permission denied when execute ontape command from another host that not
have openssh installed.
Database host: Informix Dynamic Server 9.21.UC5 Solaris 8 without openssh.
Tape host: Solaris 7 with openssh.
$ ontape -s -L 1Please mount tape 1 on gestion:/dev/rmt/2u and press Return to continue ...
Remote tape report:
dd: /dev/rmt/2u: open: Permission denied
could not write archive tape.
Any remote command with dd works without problems:
$ rsh gestion "dd if=/var/tmp/graficos_1999.txt" >
/var/tmp/graficos_1999.txt89+1 records in
89+1 records out
But ontape doesnt. dd fail with Permission denied.
What can I do?
Uninstall on tape host?
Install openssh on database host sent backup correctly?
Please help,
Thanks in advance.
Guillermo Gómez Valcárcel
Madrid, Spain.
I want to add more information fruits of in-depth investigation.
When execute remote command as Informix:
$ rsh gestion echo testTest
When execute as root
wot02# rsh gestion echo test
permission denied
Are ontape dd commands launched as user root?
I will try to config openssh to get permission to root.
Guillermo.
-----Mensaje original-----
De: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] En nombre de
Guillermo Gómez Valcárcel
Enviado el: jueves, 13 de marzo de 2008 14:17
Para: ids@iiug.org
Asunto: remote tape with ontape (dd command) fail afte.... [11596]
Hi:
Until now I had been archiving our database with ontape throught remote tape
connecting to another host called gestion.
The onconfig parameter is:
TAPEDEV gestion:/dev/rmt/2
Yesterday I install openssh in gestion (the tape host) and now I get dd:
Permission denied when execute ontape command from another host that not
have openssh installed.
Database host: Informix Dynamic Server 9.21.UC5 Solaris 8 without openssh.
Tape host: Solaris 7 with openssh.
$ ontape -s -L 1Please mount tape 1 on gestion:/dev/rmt/2u and press Return to continue ...
Remote tape report:
dd: /dev/rmt/2u: open: Permission denied
could not write archive tape.
Any remote command with dd works without problems:
$ rsh gestion "dd if=/var/tmp/graficos_1999.txt" >
/var/tmp/graficos_1999.txt89+1 records in
89+1 records out
But ontape doesn t. dd fail with Permission denied.
What can I do?
Uninstall on tape host?
Install openssh on database host sent backup correctly?
Please help,
Thanks in advance.
Guillermo Gsmez Valcarcel
Madrid, Spain.
****************************************************************************
***
Forum Note: Use "Reply" to post a response in the discussion forum.
Guillermo Gómez Valcárcel wrote:
> Hi:
>
> Until now I had been archiving our database with ontape throught remote tape
> connecting to another host called gestion.
>
> The onconfig parameter is:
> TAPEDEV gestion:/dev/rmt/2
>
> Yesterday I install openssh in gestion (the tape host) and now I get dd:
> Permission denied when execute ontape command from another host that not
> have openssh installed.
>
> Database host: Informix Dynamic Server 9.21.UC5 Solaris 8 without openssh.
> Tape host: Solaris 7 with openssh.
>
> $ ontape -s -L 1> Please mount tape 1 on gestion:/dev/rmt/2u and press Return to continue ...
> Remote tape report:
> dd: /dev/rmt/2u: open: Permission denied
> could not write archive tape.
>
> Any remote command with dd works without problems:
>
> $ rsh gestion "dd if=/var/tmp/graficos_1999.txt" >
> /var/tmp/graficos_1999.txt> 89+1 records in
> 89+1 records out
>
Did you try a remote dd to/from /dev/rmt/2? Maybe there is really a
privs or operational problem with that device.
Art S. Kagel
Oninit
> But ontape doesnt. dd fail with Permission denied.
>
> What can I do?
> Uninstall on tape host?
> Install openssh on database host sent backup correctly?
>
> Please help,
> Thanks in advance.
>
> Guillermo Gómez Valcárcel
> Madrid, Spain.
>
================================================================================
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Please access the attached hyperlink for an important electronic
communications disclaimer:
http://www.oninit.com/home/disclaimer.php
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===========
Guillermo Gómez Valcárcel wrote:
> I want to add more information fruits of in-depth investigation.
>
> When execute remote command as Informix:
> $ rsh gestion echo test> Test
>
> When execute as root
> wot02# rsh gestion echo test
> permission denied
>
> Are ontape dd commands launched as user root?
> I will try to config openssh to get permission to root.
>
Ontape is started by whatever user runs it.
Art S. Kagel
Oninit
> Guillermo.
>
> -----Mensaje original-----
> De: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] En nombre de
> Guillermo Gómez Valcárcel
> Enviado el: jueves, 13 de marzo de 2008 14:17
> Para: ids@iiug.org
> Asunto: remote tape with ontape (dd command) fail afte.... [11596]
>
> Hi:
>
> Until now I had been archiving our database with ontape throught remote tape
>
> connecting to another host called gestion.
>
> The onconfig parameter is:
> TAPEDEV gestion:/dev/rmt/2
>
> Yesterday I install openssh in gestion (the tape host) and now I get dd:
> Permission denied when execute ontape command from another host that not
> have openssh installed.
>
> Database host: Informix Dynamic Server 9.21.UC5 Solaris 8 without openssh.
>
> Tape host: Solaris 7 with openssh.
>
> $ ontape -s -L 1> Please mount tape 1 on gestion:/dev/rmt/2u and press Return to continue ...
> Remote tape report:
> dd: /dev/rmt/2u: open: Permission denied
> could not write archive tape.
>
> Any remote command with dd works without problems:
>
> $ rsh gestion "dd if=/var/tmp/graficos_1999.txt" >
> /var/tmp/graficos_1999.txt> 89+1 records in
> 89+1 records out
>
> But ontape doesn t. dd fail with Permission denied.
>
> What can I do?
> Uninstall on tape host?
> Install openssh on database host sent backup correctly?
>
> Please help,
> Thanks in advance.
>
> Guillermo Gsmez Valcarcel
> Madrid, Spain.
>
> ****************************************************************************
> ***
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>
>
*******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>
> ------------------------------------------------------------------------
>
> See you at the IIUG Informix 2008 Conference
> The Power Conference for Informix Professionals
> April 27 - 30, 2008 Marriott Overland Park (Kansas City), Kansas
> http://www.iiug.org/conf
> Registration Now Open!!
================================================================================
===========
Please access the attached hyperlink for an important electronic
communications disclaimer:
http://www.oninit.com/home/disclaimer.php
================================================================================
===========
If your ontape command is in a script, you could try
su informix -c ontape
Works for us.
----- Original Message -----
From: "Guillermo Gómez Valcárcel" <guillermo.gomez@grafia.es>
To: <ids@iiug.org>
Sent: Thursday, March 13, 2008 8:35 AM
Subject: RE: remote tape with ontape (dd command) fail .... [11598]
>I want to add more information fruits of in-depth investigation.
>
> When execute remote command as Informix:
> $ rsh gestion echo test> Test
>
> When execute as root
> wot02# rsh gestion echo test
> permission denied
>
> Are ontape dd commands launched as user root?
> I will try to config openssh to get permission to root.
>
> Guillermo.
>
> -----Mensaje original-----
> De: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] En nombre de
> Guillermo Gómez Valcárcel
> Enviado el: jueves, 13 de marzo de 2008 14:17
> Para: ids@iiug.org
> Asunto: remote tape with ontape (dd command) fail afte.... [11596]
>
> Hi:
>
> Until now I had been archiving our database with ontape throught remote
> tape
>
> connecting to another host called gestion.
>
> The onconfig parameter is:
> TAPEDEV gestion:/dev/rmt/2
>
> Yesterday I install openssh in gestion (the tape host) and now I get dd:
> Permission denied when execute ontape command from another host that not
> have openssh installed.
>
> Database host: Informix Dynamic Server 9.21.UC5 Solaris 8 without
> openssh.
>
> Tape host: Solaris 7 with openssh.
>
> $ ontape -s -L 1> Please mount tape 1 on gestion:/dev/rmt/2u and press Return to continue
> ...
> Remote tape report:
> dd: /dev/rmt/2u: open: Permission denied
> could not write archive tape.
>
> Any remote command with dd works without problems:
>
> $ rsh gestion "dd if=/var/tmp/graficos_1999.txt" >
> /var/tmp/graficos_1999.txt> 89+1 records in
> 89+1 records out
>
> But ontape doesn t. dd fail with Permission denied.
>
> What can I do?
> Uninstall on tape host?
> Install openssh on database host sent backup correctly?
>
> Please help,
> Thanks in advance.
>
> Guillermo Gsmez Valcarcel
> Madrid, Spain.
>
> ****************************************************************************
> ***
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>
>
*******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>
--------------------------------------------------------------------------------
> See you at the IIUG Informix 2008 Conference
> The Power Conference for Informix Professionals
> April 27 - 30, 2008 Marriott Overland Park (Kansas City), Kansas
> http://www.iiug.org/conf
> Registration Now Open!!
I solved the permission denied of root remote command adding remote host to
the .rhosts file of user root. False trail!
The source of problem has to do with the post installation openssh.
I take 6 years backing up my Informix database this way without problems.
My key of the question is:
After install openssh on the tape host,
Why dd shell commands works and ontape dd commands doesn't?
Thanks for all responses.
Guillermo.
-----Mensaje original-----
De: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] En nombre de Art S.
Kagel (Oninit)
Enviado el: jueves, 13 de marzo de 2008 14:43
Para: ids@iiug.org
Asunto: Re: remote tape with ontape (dd command) fail .... [11601]
Guillermo Gsmez Valcarcel wrote:
> I want to add more information fruits of in-depth investigation.
>
> When execute remote command as Informix:
> $ rsh gestion echo test> Test
>
> When execute as root
> wot02# rsh gestion echo test
> permission denied
>
> Are ontape dd commands launched as user root?
> I will try to config openssh to get permission to root.
>
Ontape is started by whatever user runs it.
Art S. Kagel
Oninit
> Guillermo.
>
> -----Mensaje original-----
> De: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] En nombre de
> Guillermo Gsmez Valcarcel
> Enviado el: jueves, 13 de marzo de 2008 14:17
> Para: ids@iiug.org
> Asunto: remote tape with ontape (dd command) fail afte.... [11596]
>
> Hi:
>
> Until now I had been archiving our database with ontape throught remote
tape
>
> connecting to another host called gestion.
>
> The onconfig parameter is:
> TAPEDEV gestion:/dev/rmt/2
>
> Yesterday I install openssh in gestion (the tape host) and now I get dd:
> Permission denied when execute ontape command from another host that not
> have openssh installed.
>
> Database host: Informix Dynamic Server 9.21.UC5 Solaris 8 without
openssh.
>
> Tape host: Solaris 7 with openssh.
>
> $ ontape -s -L 1> Please mount tape 1 on gestion:/dev/rmt/2u and press Return to continue
...
> Remote tape report:
> dd: /dev/rmt/2u: open: Permission denied
> could not write archive tape.
>
> Any remote command with dd works without problems:
>
> $ rsh gestion "dd if=/var/tmp/graficos_1999.txt" >
> /var/tmp/graficos_1999.txt> 89+1 records in
> 89+1 records out
>
> But ontape doesn t. dd fail with Permission denied.
>
> What can I do?
> Uninstall on tape host?
> Install openssh on database host sent backup correctly?
>
> Please help,
> Thanks in advance.
>
> Guillermo Gsmez Valcarcel
> Madrid, Spain.
>
>
****************************************************************************
> ***
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>
>
****************************************************************************
***
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>
> ------------------------------------------------------------------------
>
> See you at the IIUG Informix 2008 Conference
> The Power Conference for Informix Professionals
> April 27 - 30, 2008 Marriott Overland Park (Kansas City), Kansas
> http://www.iiug.org/conf
> Registration Now Open!!
============================================================================
===============
Please access the attached hyperlink for an important electronic
communications disclaimer:
http://www.oninit.com/home/disclaimer.php
============================================================================
===============
****************************************************************************
***
Forum Note: Use "Reply" to post a response in the discussion forum.