have you tried other options other than 'u'?
how about 'c'?


from st(7D):


<snip>

/dev/rmt/[0- 127][l,m,h,u,c][b][n]

where l,m,h,u,c specifies the density (low, medium, high, ultra/compressed),
b the optional BSD behavior (see mtio(7I)),
and n the optional no rewind behavior.
For example, /dev/rmt/0lbn specifies unit 0,
low density, BSD behavior, and no rewind.



<snip>





I think if you don't say 'c' you  may not be using compression






|-----Original Message-----
|From: veritas-bu-admin AT mailman.eng.auburn DOT edu
|[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Noel
|Lindsay Hunt
|Sent: Sunday, December 09, 2001 2:23 AM
|To: Veritas BU
|Subject: [Veritas-bu] Tape capacity
|
|
|I am having big problems writing to a Quantum DLT4000.
|This drive is attached to an Ultra 2 which was running a
|set of dump scripts using ufsdump, writing to the `ultra'
|compressed device, `/dev/rmt/0ubn', dumping roughly 41Gb,
|well within the capacity of the compression device.
|
|This machine has now become a media server, and the
|storage unit is this drive, using the same device file,
|but NetBackup is exiting after writing something less
|than 40Gb. The bptm log file even shows it reads EOM from
|the tape (unless I am sorely mistaken). I can't
|understand what is happening. As far as I can see this
|shouldn't happen. Has anyone any experience with this
|problem?
|_______________________________________________
|Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
|http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
|
|