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тАО04-01-2009 10:56 AM
тАО04-01-2009 10:56 AM
magic number is invalid
Hello,
Have an issue with an LTO-2 tape drive. It can read/write to its own tapes without issue. However when trying to read those tapes in other LTO-2/3 drives I get the following message(s):
ftio -gv /dev/rmt/19m > tapeindex
ftio: error reading tape header : Error 0
# ftio -itvc /dev/rmt/19m > tapeindex
ftio: error reading tape header : magic number is invalid
ftio: please mount tape 1, then hit return
Tapes created on other drives are able to be read by this one.
Could this be a Firmware or a tape head alignment issue?
Have an issue with an LTO-2 tape drive. It can read/write to its own tapes without issue. However when trying to read those tapes in other LTO-2/3 drives I get the following message(s):
ftio -gv /dev/rmt/19m > tapeindex
ftio: error reading tape header : Error 0
# ftio -itvc /dev/rmt/19m > tapeindex
ftio: error reading tape header : magic number is invalid
ftio: please mount tape 1, then hit return
Tapes created on other drives are able to be read by this one.
Could this be a Firmware or a tape head alignment issue?
3 REPLIES 3
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тАО04-01-2009 11:40 AM
тАО04-01-2009 11:40 AM
Re: magic number is invalid
both tapes on same machine?
if different machines, are they the same OS?
if different OSes, what are they?
have you tried other utilities (such as tar) and was that successful?
have you tried tape created elsewhere on the drive you believe has issues (i.e. create a ftio tape on /dev/tmy/19m and try and read it on the problem drive)?
if different machines, are they the same OS?
if different OSes, what are they?
have you tried other utilities (such as tar) and was that successful?
have you tried tape created elsewhere on the drive you believe has issues (i.e. create a ftio tape on /dev/tmy/19m and try and read it on the problem drive)?
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тАО04-03-2009 08:23 AM
тАО04-03-2009 08:23 AM
Re: magic number is invalid
what is the output of:
#ll /dev/tmy/19*
Are you using the right device file?
see this post:
http://forums13.itrc.hp.com/service/forums/questionanswer.do?threadId=759637&admit=109447627+1238775640572+28353475
#ll /dev/tmy/19*
Are you using the right device file?
see this post:
http://forums13.itrc.hp.com/service/forums/questionanswer.do?threadId=759637&admit=109447627+1238775640572+28353475
****
Unix operates with beer.
Unix operates with beer.
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тАО04-03-2009 08:29 AM
тАО04-03-2009 08:29 AM
Re: magic number is invalid
you could inspect the tape with the "other" drives with this commands:
dd if= bs=1 count=100 | od -bc
I think the error message means that there is a compatibility problem here. see this:
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=118187
dd if=
I think the error message means that there is a compatibility problem here. see this:
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=118187
****
Unix operates with beer.
Unix operates with beer.
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