From: John Jolet (john.jolet@FXFN.COM)
Date: Thu Apr 29 2004 - 14:47:47 EDT
nope, 0 for 4mm, 8mm, dlt and lto. If you watch a makesysb run with
non-zero blocksize, listen to the tape forward...then rewind...then
forward, then write...then rewind...VERY painful to behold. I forgot to
set it making a makesysb of a b50 and the 6-hour makesysb that resulted
was very embarrasing.
Robert Miller wrote:
>Don't you usually set it to 1024 for 8mm drives, but 0 for DLT's?
>
>--rm
>
>-----Original Message-----
>From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU]On Behalf Of
>John Jolet
>Sent: Thursday, April 29, 2004 10:52 AM
>To: aix-l@Princeton.EDU
>Subject: Re: Restoring file from MKSYSB (summary)
>
>
>hmm, really? I've always specified block size of zero for my
>makesysbs. Otherwise it's too slow.
>
>Stamper, Steve wrote:
>
>
>
>>Thanks for everyone's feedback. I tried everyone's suggestion (see
>>snip below) and still ended up with the same results. I then started
>>wondering if I had a bad tape so I did another MKSYSB; same results.
>>I changed the block_size between 1024 and 512; same results. I then
>>set the block_size to 0 (variable) and TADA!!! This goes against what
>>I have learned about MKSYSB tapes so I guess I need to do some research.
>>
>>Thanks everyone for your help - Steve
>>
>><snip_o_failures>
>># tctl -f /dev/rmt0 rewind
>># tctl -f /dev/rmt0.1 fsf 2
>># restore -Tvf /dev/rmt0.1
>>Please mount volume 1 on /dev/rmt0.1.
>> Press the Enter key to continue.
>>
>>restore: 0511-160 Cannot read the backup media
>> /dev/rmt0.1: There is an input or output error.
>>
>># tctl -f /dev/rmt0 rewind
>># restore -s4 -xvf /dev/rmt0.1 ./etc/motd
>>Please mount volume 1 on /dev/rmt0.1.
>> Press the Enter key to continue.
>>
>>restore: 0511-157 Cannot skip tape records.
>>#
>>
>># tctl -f /dev/rmt0 rewind
>># restore -s3 -xvf /dev/rmt0.1 ./etc/motd
>>Please mount volume 1 on /dev/rmt0.1.
>> Press the Enter key to continue.
>>
>>restore: 0511-160 Cannot read the backup media
>> /dev/rmt0.1: There is an input or output error.
>>#
>>
>># tctl -f /dev/rmt0 rewind
>># restore -s2 -xvf /dev/rmt0.1 ./etc/motd
>>Please mount volume 1 on /dev/rmt0.1.
>> Press the Enter key to continue.
>>
>>restore: 0511-262 Read an unexpected end of file.
>>#
>>
>></snip_o_failures>
>>
>>
>>
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