Re: SCSI Kernel Problem - BAD

Simon Shapiro (
Thu, 14 Mar 1996 18:58:56 -0600 (CST)

Hi "Leonard N. Zubkoff"; On 14-Mar-96 you wrote:

> I ran into this same problem back in December, and eventually tracked down my


I read with great interest. As my background in I/O systems involves much RDMS
and other monstrosities, I shiver at the though of a disk driver re-ordering I/O
Can cause corruption real fast. It is a real problem as it must be done for
perfromance problems. You raise an interesting point with starvation on a disk.
Your solution is very clever. I think the SCSI protocol has a hole in it.
namely timeouts. No way to predict these. I still feel uncomfortable with the
way Linux queues and handles Disk Requests. To many holes. Too many dependenci
on timeouts.

Sincerely Yours,
(Sent on 03/14/96, 18:58:56)
Simon Shapiro i-Connect.Net, a Division of iConnect Corp.
Shimon@i-Connect.Net 13455 SW Allen Blvd., Suite 140 Beaverton OR 97008