What is the target device type ? If a target supports REC, but does not support Sequence retransmission (i.e., RETRY bit=0 in PRLI response), then it's probably a disk device.
REC for general usage (i.e., for more devices than just tape) was added a while ago to allow for polling of the Exchange (i.e., QUERY TASK). ...Dave -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Zou, Yi Sent: Friday, November 12, 2010 2:41 PM To: [email protected] Subject: [Open-FCoE] Question regaring REC and SRR in libfc/fc_fcp Hi, I have noticed that in one of my testing where the target supports REC but does not support RETRY in PRLI reply. In this case, fc_fcp_srr() is never really sending SRR but just goes to fc_fcp_retry_cmd() directly since FC_RP_FLAGS_RETRY of the rport is not set. I understand that no RETRY does not mean no REC from FCP-3 spec, so we can't disable REC because of no RETRY, but for us, in this case, we got REC accepted, but we are not able to send SRR, does that mean we want to fail the I/O at that point already? I am also not sure if it is common for target to support REC but no RETRY. Thanks, yi _______________________________________________ devel mailing list [email protected] http://www.open-fcoe.org/mailman/listinfo/devel _______________________________________________ devel mailing list [email protected] http://www.open-fcoe.org/mailman/listinfo/devel
