Re: ISCSI: CmdSN in non-leading login

["Julian Satran" <Julian_Satran@il.ibm.com>]

John,

Here is the text I suggest for 9.12.8

CmdSN

CmdSN is either the initial command sequence number of a session (for the first Login request of a session - the "leading" login) or the command sequence number in the command stream if the login is for a new connection in an existing session.

Examples:

- A leading login phase - if the leading login carries the CmdSN 123 all other login requests in the same login phase carry the CmdSN 123 and the first non-immediate command in FullFeaturePhase also carries the CmdSN 123.

- A non-leading login phase - the current CmdSN at the time the first login on the connection is issued is 500 - the login request carries CmdSN=500 the second login request carries a CmdSN not lower than 500 (higher if non-immediate requests where issued in the session between the first and the second request in the new login phase) etc..

If the login request is a leading login request the target MUST use the value presented in CmdSN as the target value for ExpCmdSN.

Regards,
Julo