Hmm, so the error would suggest that the block size of the device has
been changed or the tape was moved to another device with a different
block size. I am very sure the block size was never changed on this
server at all, however I do have an autochanger with 2 tape devices so
maybe those are mismatched. I'll have a look.

Thanks

Nico


On Wed, 2006-08-16 at 09:37 -0400, Greggs, Dana wrote:
> The block size does depend on the device and is maintained by the tape.
> When your format/re-label a tape it is formatted with whatever block
> size you have configured for the device. If in July you re-labeled a
> tape and your device was configured for a block size of 64KB but you
> decided to change the block size to 128KB in August then you would
> encounter the error you mentioned in your post. 
> 
> Only change the block size on your tape device if you need to do a
> recovery from the tape with the smaller block size otherwise do a label
> no mount and it will be formatted with the "current" block size which
> seems to be 64KB. 
> 
> 
> Thanks,
> 
> Dana
> 
> -----Original Message-----
> From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT 
> EDU]
> On Behalf Of Nico De Ranter
> Sent: Wednesday, August 16, 2006 9:12 AM
> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Subject: Re: Not all tapes are fully used
> 
> That's what I meant. If Networker somehow decided the tape isn't worth
> writing it should flag it as bad (and of course move on to the next
> tape) so the next time it won't be reused either.
> 
> Unfortunately I cannot find anything in the logs that would indicate why
> it's giving up on the tape. However the following message keeps popping
> up every once in a while (but NOT for all tapes that have only been
> partialy used):
> 
> daemon.001:08/10/06 13:13:06 nsrd: media notice: Volume "4640" on device
> "/dev/rmt/5hbn": Block size is 32768 bytes not 65536 bytes. Verify the
> device configuration. Tape positioning by record is disabled.
> 
> Shouldn't the block size depend on the device, not the tape? In that
> case why doesn't he complain about this for *every* tape?
> 
> Can I safely change the block size settings without invalidating all my
> existing tapes (the manual seems to suggest that's not possible)
> 
> Nico
> 

-- 
Nico De Ranter
Senior System Administrator
Sony Service Center (NSCE)
The Corporate Village, Da Vincilaan 7-D1
B-1935 Zaventem, Belgium
Telephone: +32 (0)2 700 86 41 Fax: +32 (0)2 700 86 22

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