Re: [patch for playing] Patch to support 4000 disks and maintain

Joel Becker
2003-04-11T19:06:22Z

On Fri, Apr 11, 2003 at 11:12:32AM -0700, Patrick Mansfield wrote:
> I'm trying to pull the current multi-path patch up to 2.5.66 (ouch).

I wasn't aware of this work. This is very interesting. Two
questions:

1) When does it failover? Meaning, if I I/O to a disk, but someone
yanks the fibrechannel plug. Does your multipath wait for a SCSI
timeout to redirect the I/O?

2) If so, have you considered trapping loop up/down events to handle
such a case? Real users of multipath tech do not want to wait 90s for
failover.

Joel

--

"Win95 file and print sharing are for relatively friendly nets."
- Paul Leach, Microsoft

Joel Becker
Senior Member of Technical Staff
Oracle Corporation
E-mail: joel.becker@oracle.com
Phone: (650) 506-8127