Hello. I have serious trouble with two HP DAT drives (both DAT 40 drives, one single tape drive, one 6-slot autoloader SureStore 40x6i).
Both trouble making systems are SMP machine (two Intel PIII/866 CPUs) with SymbiosLogic SCSI controler. Both tape drives have the following parameters: Physical blocksize: 1024 EOT model: 1 file mark Compression: DCLZ As backup software I use afbackup 3.3.7pl2. Since we moved from FreeBSD 4.6 to 4.6.2-p2 or towards FreeBSD 4.7-RC, FreeBSD and afbackup seem to fall into serious trouble. First the system with the autoloader: At the end of a tape, tape changes couldn't be performed anymore and the kernel log is full of this message: (sa0:sym1:0:5:0): Invalid request. Fixed block device requests must be a multiple of 1024 bytes (sa0:sym1:0:5:0): tape is now frozen- use an OFFLINE, REWIND or MTEOM command to clear this state. The loader displays shows a status of: Semi Loaded - then Loading - Then Semi Loaded ... And I get error messages on the console from afbackup that it expects tape 2 but have tape 1. After doing this pseudochanging the cassette a whole night, at the end, when doing a ktrace -p PID the autoloader status display showed up this: EOTMark not found. The switches of the Autoloader and of the single tape drive are switched to the recommended PC-style config. When power off and power on an 'mt status' displays a block size of 1024, like this: root: /root: mt status Mode Density Blocksize bpi Compression Current: 0x26:DDS-4 1024 bytes 97000 DCLZ ---------available modes--------- 0: 0x26:DDS-4 1024 bytes 97000 DCLZ 1: 0x26:DDS-4 1024 bytes 97000 DCLZ 2: 0x26:DDS-4 1024 bytes 97000 DCLZ 3: 0x26:DDS-4 1024 bytes 97000 DCLZ --------------------------------- Current Driver State: at rest. --------------------------------- File Number: 0 Record Number: 0 Residual Count 0 The same on the single tape drive. FreeBSd 4.6-RELEASE and afbackup 3.3.7 did not show up this problem. I do not know whether these problems are hardware or software related, but watching that massive kernel low level errors suspects me the kernel and/or sa driver. Does anyone has a glue how to fix this? What blocksize should I switch the tape drives to? Any ideas? I feel really confused about this. At this moment the last inserted tape is stuck in the autoloader and could be only freed by pressing 5 seconds the eject button for emergency eject. No 'mt rewoffl' works ... Any email appreciated ... Thansk in advance, Oliver -- MfG O. Hartmann [EMAIL PROTECTED] ------------------------------------------------------------------ IT-Administration des Institutes fuer Physik der Atmosphaere (IPA) ------------------------------------------------------------------ Johannes Gutenberg Universitaet Mainz Becherweg 21 55099 Mainz Tel: +496131/3924662 (Maschinenraum) Tel: +496131/3924144 (Buero) FAX: +496131/3923532 To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-questions" in the body of the message
