List, Does anyone here know how to tell a Quantum DLT 7000 SCSI tape drive to turn on hardware compression under Linux (for use with "tar" and the like)? I have tried "mt compression 1" and "mt setdensity 0x85" and "mt defdensity 0x85", but none of them seem to have any affect. At least, they do not appear to. It takes the same amount of time and same number of tapes to backup the same data set, regardless of settings. I would imagine *some* variation with compression turned on, even if the data does not compress well (indeed, in that case, it is supposed to take *longer*).
The drive is inside a tape changer, so looking at the front-panel LEDs is difficult. :-) I am hoping someone here has played around with hardware data compression under Linux before. Or under any Unix, for that matter. Information on this is proving scarce. System information: Red Hat Linux 6.2 Linux kernel 2.2.19 GNU C library (glibc) 2.1.3 mt-st version 0.5b advTHANKSance -- Ben Scott | Net Technologies, Inc. | 978-462-8795 Network Engineer | Salisbury, MA, USA | 866-NTI-LINUX (684-5468) [EMAIL PROTECTED] | http://www.ntilinux.com | Fax: 978-499-7839 ***************************************************************** To unsubscribe from this list, send mail to [EMAIL PROTECTED] with the text 'unsubscribe gnhlug' in the message body. *****************************************************************
