Messages in this thread |  | | Date | Tue, 8 May 2001 09:12:32 +0200 (CEST) | From | Geert Uytterhoeven <> | Subject | Re: SCSI Tape corruption - update |
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On Mon, 7 May 2001, Lorenzo Marcantonio wrote: > On Mon, 7 May 2001, Rob Turk wrote: > > Have you ruled out hardware failures? There's been a few isolated reports > > That tape drive (Sony SDT-9000, less than 2 years of service) works > perfectly on Windows NT (were it was before) and even on Linux 2.2 > > Also the cartridge was brand new.
In the mean time I down/upgraded to 2.2.17 on my PPC box (CHRP LongTrail, Sym53c875, HP C5136A DDS1) and I can confirm that the problem does not happen under 2.2.17 neither.
My experiences: - reading works fine, writing doesn't - 2.2.x works fine, 2.4.x doesn't (at least since 2.4.0-test1-ac10) - hardware compression doesn't matter - I have a sym53c875, Lorenzo has an Adaptec, so most likely it's not a SCSI hardware driver bug - I have a PPC, Lorenzo doesn't, so it's not CPU-specific - corruption is always a block of 32 bytes being replaced by 32 bytes from the previous tape block (depending on block size!) (approx. 6 errors per 256 MB)
Lorenzo, can you please investigate the exact nature of the corruption on your system? - How many successive bytes are corrupted? - Where do the corrupted data come from?
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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