Messages in this thread | | | From | (Bob_Tracy) | Subject | Re: SCSI Tape Corruption - update | Date | Thu, 12 Apr 2001 07:43:43 -0500 (CDT) |
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lomarcan@tin.it wrote: > It seems that the tape is written incorrectly. I wrote some large file > (300MB) > and read it back four time. The read copies are all the same. They differ > from the original only in 32 consecutive bytes (the replaced values SEEM > random). Of course, 32 bytes in 300MB tar.gz files are TOO MUCH to be > accepted :)
Several years ago I ran into a problem with similar symptoms on an old Adaptec AHA-154X controller. Files (and most certainly "file systems" if I had persisted) on my hard disk were getting corrupted in random places with constant length strings of garbage. This turned out to be an inappropriate setting for the AHA1542_SCATTER constant: it *was* 16, and setting it to 8 fixed my problem. I'd look for a similar "#define" in the header file for your SCSI device driver and try cutting the value by half. Why "half"? No justification other than it worked for me, and it's a power-of-two kind of thing that hardware seems to like :-).
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