More tests [Was: Problem with read blocking for a long time on /dev/scd1]

From: Greg Stark (gsstark@MIT.EDU)
Date: Sun Dec 22 2002 - 11:13:14 EST

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I've done some more tests:

The problem still occurs with straight ide drivers, no ide-scsi

The problem still occurs with 2.4.20-ac2

I removed extraneous llseek syscalls from libdvdread, it's now reading purely
sequentially and still failing. I doubt an llseek to the current location even
gets through to the driver but I figured I would remove another variable.

Question: Does the readahead parameter in hdparm affect accesses to the raw
/dev/hdd device? Does it affect atapi cdrom access?

-- greg

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