For future reference for others on the mailing list who might try a similar procedure in the future I also received a useful response from Matt Hallmark which points out that you also need to keep the target portal group tags the same for *nix/esx hosts.

On Thu, Jan 7, 2010 at 8:39 AM, Matt Hallmark matt@cosmictoaster.comwrote:

You will run into trouble, with all *nix/esx hosts if the iSCSI Target Portal Group tag(s) change.

goliath> iscsi tpgroup show TPGTag Name Member Interfaces 1 e0a_old (none) 1004 e3a_default e3a 1005 e3b_default e3b 2000 VIF_e0_AC_default VIF_e0_AC 2001 VIF_e0_BD_default VIF_e0_BD

Those are changable, but would require an iSCSI maintenance window to complete.

Matt

Romeo