On Mon, 19 May 2003 08:18:57 -0400, Marc Levitan <marc.levitan AT PFPC DOT COM>
wrote:

>I have 4 storage nodes using Dynamic Drive Sharing.
>Everything was working properly for a while.  The storage nodes directly
>accessed the tape drives across the SAN.
>
>Now, everything is NOT working.  When I try to access the drives across the
>SAN I get read open errors and I/O errors.  The tapes then get stuck in the
>drives and I have to manually move them and perform a reset and inventory
>on the library.
>
>I looked at the inquire command and the tape drives are listed but they are
>not mapped to a device path.
>
>I believe that this is the issue.
>I think that I could do a   rm /dev/rmt*  and a reboot -- -r to pick up the
>drive mappings, but what happens the next time the server reboots?
>
>Something in my configuration must  have changed.  Maybe st.conf or
>lpfc.conf???
>
>Has anyone experienced this and have a solution?
>I would like to configure persistent bindings so that the config will stay
>the same after server reboots.
>
>Networker Server is Solaris 8, Networker 6.1
>Networker Client is Solaris 6 and Solaris 8 all Networker 6.1

Persistent binding is absolutely the right solution here. All SAN
implementions for tape devices should always use persistent bindings. I
would never do it any other way. The only exception is where the OS
mappings make it unnecessary, e.g. when using AIX.

You will find it quite simple to set up persistent binding using lputil,
and you will wish you did it earlier.

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