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SubjectRe: IDE tape and SMP

I have back checked the ide-driver parts that are pre-me and post-me,
that is 2.1.121 and 2.1.122. In both cases using an offboard IDE
controller (Promise Ultra/33) and calling tape commands via
generic 'tar' commands "tar cvvf /dev/ht0".

Everything seems functional under SMP.......at 2.1.123/124/125 there
appears to be a hang and DSC timeout. I am hunting through the changes
in the driver after 2.1.122 and deeper SMP/IO-APIC changes. If there is
nothing in the ide-driver updates in 2.1.123/124/125/126 that 2.1.122 can
not handle and ide-2.1.125/126 runs in 2.1.122, then I am left to conclude
it is out side.
Since there are reports that UP ide-tape is functional and behaving
(not verified personally), there may be bigger issues to follow-up.

I recall that there are some new ADAPTEC SMP problems that have popped up
lately. These may be totally unrelated issues, but if they are having
timing faults also, there may be a crossover effect.

Cheers,
Andre Hedrick
The IDE-FNG for Linux
The APC UPS Specialist for Linux

http://www.dyer.vanderbilt.edu/server/udma/
http://www.dyer.vanderbilt.edu/server/apcupsd/ SUSPENDED








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