edwin@cs.ruu.nl (Edwin Kremer) (12/17/90)
Hello all, I was wondering if someone would care to enlighten a somewhat strange behaviour of the DAT drive in our HP9000/375 running HP-UX 7.0... The documentation that came with the DAT was not very helpful in installing it -- an earlier discussion in this newsgroup was! Contributions to that discussion (around the 30th of June) came from Munir Mallal, Linas Petras and Jim Rogers (all @hp.com); thanks guys! Here's how I set up the device files for the DAT: crw------- 1 root sys 54 0x0d0502 Dec 16 16:11 /dev/rmt/0m crw------- 1 root sys 54 0x0d0503 Dec 15 17:19 /dev/rmt/0mn Every now and then I decide to unload the tape from my workstation (instead of walking to our computer room) by issueing the command: # mt -t /dev/rmt/0m offl The unit starts playing around with the tape for a couple of seconds, then ejects the tape. So far, so good. However, everytime I do this, I get this message in "/usr/adm/messages" via "dmegs -": SCSI: Status bytes: 70 0 2 0 0 0 0 b 0 0 0 0 3a 0 0 0 1 0 0 SCSI (dev 0xd0500) sense key: Not_ready Load operation requested sense_code: Medium not present SCSI: CCL error: 1 status Looks like the driver tries to reload the tape (or put the unit on-line) immediately after unloading it and then discovers that the tape is not in the drive. Is this a bug in the 'scsitape' driver??? I'm not really worried about this because it seems to function well after all, but if it isn't serious, I'd prefer the driver to be quiet. Too many for-your-information-only-messages (not to mention the "Unit Attention -- Medium Changed" messages from the rewritable optical drive :-]) in "/usr/adm/messages" are a nuisance: you'll overlook the serious ones!! BTW, although I have the DAT for only two weeks now, I *love* it already!! thanks for your time, --[ Edwin ]-- -- Edwin Kremer (SysAdm), Dept. of Computer Science, Utrecht University Padualaan 14, P.O. Box 80.089, 3508 TB Utrecht, The Netherlands Telephone: +31-30-534104 | UUCP: ...!uunet!mcsun!hp4nl!ruuinf!edwin Telefax : +31-30-513791 | Email: edwin@cs.ruu.nl [131.211.80.5]
paulp@hpfcdc.HP.COM (Paul Perlmutter) (12/17/90)
> I ... unload the tape from my workstation ... by issueing the command:
# mt -t /dev/rmt/0m offl
The unit ejects the tape. ... However, everytime I do this,
I get this message in "/usr/adm/messages" via "dmegs -":
SCSI: Status bytes: 70 0 2 0 0 0 0 b 0 0 0 0 3a 0 0 0 1 0 0
SCSI (dev 0xd0500) sense key: Not_ready
Load operation requested
sense_code: Medium not present
SCSI: CCL error: 1 status
This is a bug in the 7.0 DAT driver. It can be safely ignored.
The reason? After the tape is successfully ejected, the driver during
the tape "close" routine will issue a reposition command to the
non-cartridge and the request fails. Other than the spurious error
message, no other action occurs, thus you can forget the message.