Mpgroup

mpgroups

a new feature in OVM for SPARC 3.2 is to see which path is used in a mpgroup configuration from which LDOM and also to chance that path, perhaps to spread the workload around multiple I/O domains.

root@prim-dom # ldm list-bindings serverld1 | awk '/DISK/ {print;getline;print;getline;print;getline;print;getline;print;getline;print}'
DISK
    NAME             VOLUME                      TOUT ID   DEVICE  SERVER         MPGROUP
    ld1-hdd0       ld1-vol0@primary-vds           0    disk@0  primary        ld1-mg0
        PORT   MPGROUP VOLUME              MPGROUP SERVER STATE
        0      ld1-vol0@primary-vds      primary        active
        1      ld1-vol0@iodom-vds        io-domain      standby
root@prim-dom #
root@prim-dom #
root@prim-dom # ldm set-vdisk volume=ld1-vol0@iodom-vds ld1-hdd0 serverld1
root@prim-dom # ldm list-bindings serverld1 | awk '/DISK/ {print;getline;print;getline;print;getline;print;getline;print;getline;print}'
DISK
    NAME             VOLUME                      TOUT ID   DEVICE  SERVER         MPGROUP
    ld1-hdd0       ld1-vol0@iodom-vds             0    disk@0  io-domain      ld1-mg0
        PORT   MPGROUP VOLUME              MPGROUP SERVER STATE
        1      ld1-vol0@iodom-vds        io-domain      active
        0      ld1-vol0@primary-vds      primary        standby
root@prim-dom # ldm set-vdisk volume=ld1-vol0@primary-vds ld1-hdd0 serverld1
root@prim-dom #
root@prim-dom # ldm list-bindings serverld1 | awk '/DISK/ {print;getline;print;getline;print;getline;print;getline;print;getline;print}'
DISK
    NAME             VOLUME                      TOUT ID   DEVICE  SERVER         MPGROUP
    ld1-hdd0       ld1-vol0@primary-vds           0    disk@0  primary        ld1-mg0
        PORT   MPGROUP VOLUME              MPGROUP SERVER STATE
        0      ld1-vol0@primary-vds      primary        active
        1      ld1-vol0@iodom-vds        io-domain      standby
root@prim-dom #