Date: Tue, 5 Dec 2000 09:37:40 -0800 (PST) From: "Scott B. Gale" <scott@doheny.beach.net> To: questions@FreeBSD.ORG Cc: Dan Busarow <dan@dpcsys.com> Subject: rdump to Travan 8GB Cartridge Message-ID: <Pine.BSF.4.21.0012041724570.30253-100000@doheny.beach.net>
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Maybe someone out there has run into this problem before. I am trying to to use rdump to backup a file system on one machine to a SCSI tape drive on another machine on the same network. The first machine (whose files I'm backing up) is running FreeBSD 4.1. The second (which has the SCSI tape drive) is running FreeBSD 2.2.8. The tape is a Travan 8GB Cartridge (4GB uncompressed). The tape specifications are as follows according to the manufacturer: Travan 8 GB Product Specifications: Specification Travan 8GB Cartridge UPC: 0-51111-46214 Capacity Uncompressed: 4 GB Compressed: 8 GB Data Transfer Rate* Uncompressed: 567 KB/second Tape Length: 740 ft. Tape Coercivity: 900 Oe Tracks: 72 Tested at: 50,800 ftpi Preformatted: QIC-170 My first attempt was to compose the following command: /sbin/rdump -0dsfu 50800 740 root@fs.myco.com:/dev/rst0 /dev/rad0a The density and tape length parameters were rejected as invalid and no parameters I could come up with worked. If I left the parameters out the program predicted it would take scores of tapes to complete the backup when two tapes should be able to handle the 6 gigabytes I'm trying to backup. I decided to try the "autosize" -a switch and came up with this command: /sbin/rdump -0au -f root@fs.myco.com:/dev/rst0 /dev/ad0s1f But it always returns the following results even with different tapes: DUMP: 62.91% done, finished in 1:07 DUMP: write: Input/output error DUMP: write error 3988030 blocks into volume 1 DUMP: Do you want to restart?: ("yes" or "no") Judging from the amount of progress I'd say that the tape is simply at its end, the tape itself is good. I've also tried splitting up the parameters various ways (e.g., -0 -a -f /dev/rst0) and specifying the slice to backup by different names (e.g., /usr instead of /dev/ad0s1f) but have had no success. If anyone has had success with rdumping to Travan 8GB tapes I'd sure appreciate it if they let me know how they did it! Thanks in advance for any replies, Scott B. Gale Dana Point Communications To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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