Messages in this thread | | | Subject | Re: Problems even with 512 block size MOs | Date | Wed, 2 May 2001 18:53:37 +0100 (BST) | From | Alan Cox <> |
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> Copying a 6.5 MByte file with cp returns nearly immediately on the > commandline, but umount nearly takes forever. Maximum rate detected by > xosview during umount was about 30 kByte. > > I have similar behaviour on another machine and with different disk. However > I don't get any "dmesg" output despite the "CONFIG_SCSI_LOGGING=y" option on > both machines.
That sounds like it isnt queueing multiple commands at a time. M/O has an erase/write sequence so you want to queue large blocks otherwise its two rotations per I/O
> Are all my MO disks rotten? Are the MO drives broken? Are my SCSI adapters > broken? Or is there a bug in the SCSI layer?
SCSI layer or scsi driver I suspect.
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