[LU-2896] IR enabled MGS don't able to register old OST

Thu, 7 Mar 2013 00:08:49 +0000

Xyratex port IR patch from upstream to own code and see MGS don't able to register old OST in new MGS, with EINVAL.

collecting logs point to
mgs_handle_target_reg function and code

        /* Do not support unregistering right now. */
        if (opc != LDD_F_OPC_REG)
                GOTO(out_nolock, rc = -EINVAL);

in case 2.1 OST (or any pre IR target) don't set any flag from list

#define LDD_F_OPC_REG   0x10000000
#define LDD_F_OPC_UNREG 0x20000000
#define LDD_F_OPC_READY 0x40000000
#define LDD_F_OPC_MASK  0xf0000000

at own side and opc is zero. that broke target to be register.

PS. did you have interoperability testing for IR ?

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