SCSI Phase Mismatch

[Pete Des Moulins]

I have an RP7410 and I get the following message, from time-to-time:

SCSI: Unhandled phase mismatch (MESG_IN_PHASE) -- lbolt: 52692, dev: cb022..


The message details are very extensive

Any ideas, anyone ?

[Stephen Keane]

It usually means that a driver is trying to negotiate a wide data transfer on a device that doesn't support them. Without a bit more of the error message it's difficult to tell more.

[Stephen Keane]

What does ioscan give you?

device major cb(hex) = 203 dec = (normally) sctl/ctl, which doesn't tell you much. Minor number 022002 looks like a tape drive. Have you recently connected a SCSI device to the server?

[Robert-Jan Goossens · Accepted solution]

Hi Pete,

Check this doc from the database.

http://www5.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000074945034

Document description: "I/O system hang" panic during boot process
Document id: CMTKBCA00001478

Regards,
Robert-Jan