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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: Timeout values for SCSI requestsUsually timeouts are set and enforced by the (class) driver at initiator. Julo "Lakshmi Ramasubramanian" <nramas@windows.microsoft.com> on 28-06-2001 21:13:13 Please respond to "Lakshmi Ramasubramanian" <nramas@windows.microsoft.com> To: Julian Satran/Haifa/IBM@IBMIL cc: Subject: RE: Timeout values for SCSI requests Julian, I agree transport timeouts should be fixed based on round trip delays, etc. But I was refering to the timeout value to be set by the target driver when it sends the scsi command to the device - I mean, the timer starts ticking after the scsi layer on the target has sent the command to the device. As you know this'd depend on the device type, command, etc. Thanks! -lakshmi -----Original Message----- From: julian_satran@il.ibm.com [mailto:julian_satran@il.ibm.com] Sent: Thursday, June 28, 2001 6:06 AM To: Lakshmi Ramasubramanian Subject: Re: Timeout values for SCSI requests Lakshmi, It was felt that execution timeouts are beyond the scope of iSCSI and transport timeouts should be determined dynamically based on the measured round trip delays. Julo "Lakshmi Ramasubramanian" <nramas@windows.microsoft.com> on 27-06-2001 20:32:05 Please respond to "Lakshmi Ramasubramanian" <nramas@windows.microsoft.com> To: Julian Satran/Haifa/IBM@IBMIL, ips@ece.cmu.edu cc: Subject: Timeout values for SCSI requests iSCSI structures for SCSI commands do not have fields to indicate timeout values for various commands. Only CDBs can be sent across. Do we expect the target driver to determine the required timeout value based on the CDB Opcode? Or, is there a way for the initiator to explicitly indicate the timeout values? Thanks! -lakshmi
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