One correction on my last posting. We are using only one dual channel
SCSI Adaptec card, not two. So two of the LTO drives use one channel.
The other two drives and the picker use the other channel.

George Sinclair wrote:
>
> Hello,
>
> I recently attempted to recover a file under the /export/home file
> system on client: client1. The recovery worked, but NetWorker initially
> complained with a decode block error as follows:
>
> Tue 17:35:33 rd=snode:/dev/nst2 mounted LTO Ultrium tape FUL362
> Tue 17:35:35 client1:/export/home (11/24/02) starting read from FUL362
> of 22 KB
> Tue 17:36:59 media notice: Volume "FUL362" on device
> "rd=snode:/dev/nst2": Cannot decode block. Verify the device
> configuration. Tape positioning by record is disabled.
> Tue 17:38:48 client1:/export/home (11/24/02) done reading 22 KB
>
> I thought the recovery had failed, but then I noticed just after this
> message, NetWorker was rewinding and then seeking forward x number of
> records. At some point the message window indicated it was reading data
> and the file recovered just fine. I checked the messages and daemon.log
> files on the primary server (server) and there is no more information
> than that posted above.
>
> Here are the specs on our systems:
> We are running 6.1.1.Build.238 on both our primary server (server) under
> Solaris 2.8 (uname shows: SunOS server 5.8 Generic_108528-05 sun4u sparc
> SUNW,Ultra-1) and on our storage node server (snode) under Linux Red Hat
> 7.3 (uname shows: Linux snode 2.4.18-17.7.xbigmem #1 SMP Tue Oct 8
> 12:07:59 EDT 2002 i686 unknown). The storage node server (snode) is
> running a StorageTek L80 LTO tape library with four LTO drives. The
> client in question (client1) was recovering the data from an LTO tape on
> the storage node server's LTO library. The primary server uses a DLT
> tape library, attached to itself, but that was not a factor in this
> recovery. The LTO tape library uses two SCSI cables to connect to the
> storage node server via two dual channel Ultra160 Adaptec 39160 PCI SCSI
> cards. Two drives use one channel, the picker and the other two drives
> use the other channel.
>
> Would greatly appreciate any response on this error and what I can or
> should do about it.
>
> Thanks.
>
> George
> George.Sinclair AT noaa DOT gov
>
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