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AIX
Change the Block size of AIX 6.1
Post 302331989 by bakunin on Tuesday 7th of July 2009 08:48:42 PM
07-07-2009
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LEARN ABOUT ULTRIX
tz
tz(4) Kernel Interfaces Manual tz(4) Name tz - SCSI magnetic tape interface Syntax VAX NCR 5380: adapter uba0 at nexus? controller scsi0 at uba0 csr 0x200c0080 vector szintr tape tz0 at scsi0 drive 0 VAX DEC SII: adapter ibus0 at nexus? controller sii0 at ibus? vector sii_intr tape tz0 at sii0 drive 0 RISC DEC SII: adapter ibus0 at nexus? controller sii0 at ibus? vector sii_intr tape tz0 at sii0 drive 0 RISC DEC KZQ: adapter uba0 at nexus? controller kzq0 at ibus? csr 0761300vector sii_intr tape tz0 at kzq0 drive 0 RISC NCR ASC: adapter ibus0 at nexus? controller asc0 at ibus? vector ascintr tape tz0 at asc0 drive 0 Description The SCSI tape driver provides a standard tape drive interface as described in This is a driver for any Digital SCSI tape device. For the TZK10 QIC format tape drive, the densities supported are QIC-24 (read only) block size of 512 byte blocks, QIC-120, and QIC-150 read/write block size of 512 byte blocks, and QIC-320 read/write block size of 1024 byte blocks. With QIC format style tapes all reads and writes must be in multiple of the block size. This is a requirement of fixed block tape drives because record boundaries are not pre- served. The QIC densities are selected using the following special device names: QIC-24 Fixed block size. QIC-120 Fixed block size. QIC-150 Fixed block size. QIC-320 Fixed block size. With all fixed block tape devices a of a file to the tape must be padded out. An example of this is a of which has a size of approximately 3800 bytes. dd if=/etc/gettytab of=/dev/rmt0h bs=10k conv=sync or dd if=/etc/gettytab of=/dev/rmt0l bs=512 conv=sync The option of pads the output to block size. This driver also supports n-buffered reads and writes to the raw tape interface (used with streaming tape drives). See for further details. Tape Support TZ30, TZK50, TLZ04, TSZ05, TKZ08, TZK10 Diagnostics All diagnostic messages are sent to the error logger subsystem. Files See Also mtio(4), nbuf(4), SCSI(4), MAKEDEV(8), uerf(8), tapex(8) Guide to the Error Logger tz(4)