geoff@edm.uucp (Geoff Coleman) (08/01/90)
Help Is there a known problem with RS6000s running either Golden Code or 9013 when using cpio with a 150Mbyte cartridge tape. We are experiencing semi-duplicatable problems with this combination on our machines. By semi I mean that we can get reads and writes to fail on the same tape with the same data set but not always in the same place. We are using cpio -idumvcB to read in the tapes and it seems to get out of sync between cpio and the tape handler. If we use dd with bs=65536 it seems to work more consistently for reading in from tape. On output we use "cpio -ocvB" and get a write error part way into the tape (usually > 60000 blocks but not a repeatable number with the same tape). Any help in this matter would be appreciated Geoff Coleman Unexsys Systems
kevin@msa3b.UUCP (Kevin P. Kleinfelter) (08/02/90)
geoff@edm.uucp (Geoff Coleman) writes: > Help >Is there a known problem with RS6000s running either Golden Code or >9013 when using cpio with a 150Mbyte cartridge tape. We are experiencing >semi-duplicatable problems with this combination on our machines. > By semi I mean that we can get reads and writes to fail on the same >tape with the same data set but not always in the same place. We are >using cpio -idumvcB to read in the tapes and it seems to get out of sync >between cpio and the tape handler. If we use dd with bs=65536 it seems to >work more consistently for reading in from tape. > On output we use "cpio -ocvB" and get a write error part way into the >tape (usually > 60000 blocks but not a repeatable number with the same tape). Interesting...we are on Golden Code, and I have made two QIC tapes on another machine (an AT&T 3B2); both failed in ABOUT the same place. Since the 3B2 we have has been around a while, I though it was probably the culprit. In our case it occurs well into a LARGE tape. -- Kevin Kleinfelter @ Dun and Bradstreet Software, Inc (404) 239-2347 {emory,gatech}!nanovx!msa3b!kevin "Don't hold your finger on the button if the motor ain't goin' roundy-roundy."
35002_3025@uwovax.uwo.ca (08/06/90)
In article <1990Aug1.033440.9706@edm.uucp>, geoff@edm.uucp (Geoff Coleman) writes: > > Help > Is there a known problem with RS6000s running either Golden Code or > 9013 when using cpio with a 150Mbyte cartridge tape. We are experiencing > semi-duplicatable problems with this combination on our machines. > By semi I mean that we can get reads and writes to fail on the same > tape with the same data set but not always in the same place. We are > using cpio -idumvcB to read in the tapes and it seems to get out of sync > between cpio and the tape handler. If we use dd with bs=65536 it seems to > work more consistently for reading in from tape. > On output we use "cpio -ocvB" and get a write error part way into the > tape (usually > 60000 blocks but not a repeatable number with the same tape). > > > Any help in this matter would be appreciated > > Geoff Coleman > Unexsys Systems -- I had similar problems on an RT hooked into a UPS - not enough amperage to handle all of the components, so the tape drive browned out... Kevin-john Conway ...a librarian from hell... School of Library and Information Science University of Western Ontario London Canada "...deviants from the norm..." "My ideas may be silly, but I'm not. I'm positively skewed!" 35002_3025@uwovax.uwo.ca conway@uwovax.bitnet kjc@uwovax.bitnet