On 12/08/11 19:03, Michael Leone wrote:
> I'm trying to do a restore, and I am seeing messages on the NMC about 
> "media error, Recorded Entity Not Found", and then I see errors about the 
> blocksize is 32768 not 131072 bytes (which is odd, since this is the same 
> server and hardware that created the tape ... (altho it may have been 
> Win2003 when the tape was created, and is now Win2008). Then I see CRC 
> errors ...
> 
> I never (deliberately) changed the blocksize, so this is news to me ...
> 
> I was able do a "nsrck -L7" from this tape, to rebuild the index that I 
> want, but can't restore the actual data.
> 
> How best to resolve this? Not knowing when the blocksize changed, I don't 
> want to set it to something that will make more current tapes unreadable 
> (this tape is from 2010-03). Is it possible to specify the blocksize on an 
> as-needed-per-job basis? (I'm assuming I can only do that from the command 
> line).
> 

This is probably NOT a block size error. The block size message is most
likely a symptom of a failure to read the tape. It could be caused by
hardware problems on the tape drive, SAN issues, or a corrupted tape.
The CRC errors also point to this.

To sign off this list, send email to listserv AT listserv.temple DOT edu and 
type "signoff networker" in the body of the email. Please write to 
networker-request AT listserv.temple DOT edu if you have any problems with this 
list. You can access the archives at 
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER