Hello all, I have a new 3par array that uber-stripes everything before you even create a LUN. The short story is...striping at the VXVM level does not buy you additional performance (if you have a single 3PAR array). I have some volumes that are on 4 column stripes (hardware RAID5 on the array) and I would like to move these volumes to the new 3PAR array. But vxassist doesn't want to let me mirror a plex made of 4 subdisks to a plex made of 1 subdisk, or so I am guessing.
Does anyone know of a way to mirror, migrate or evacuate a 4 column striped volume to a single plex and single subdisk? Here's a snapshot: [12:07:53][r...@nfs08:/]# vxprint -htg epmnfsdg DG NAME NCONFIG NLOG MINORS GROUP-ID ST NAME STATE DM_CNT SPARE_CNT APPVOL_CNT DM NAME DEVICE TYPE PRIVLEN PUBLEN STATE RV NAME RLINK_CNT KSTATE STATE PRIMARY DATAVOLS SRL RL NAME RVG KSTATE STATE REM_HOST REM_DG REM_RLNK CO NAME CACHEVOL KSTATE STATE VT NAME RVG KSTATE STATE NVOLUME V NAME RVG/VSET/CO KSTATE STATE LENGTH READPOL PREFPLEX UTYPE PL NAME VOLUME KSTATE STATE LENGTH LAYOUT NCOL/WID MODE SD NAME PLEX DISK DISKOFFS LENGTH [COL/]OFF DEVICE MODE SV NAME PLEX VOLNAME NVOLLAYR LENGTH [COL/]OFF AM/NM MODE SC NAME PLEX CACHE DISKOFFS LENGTH [COL/]OFF DEVICE MODE DC NAME PARENTVOL LOGVOL SP NAME SNAPVOL DCO EX NAME ASSOC VC PERMS MODE STATE SR NAME KSTATE dg epmnfsdg default default 61000 1109834580.1790.nfs01 dm TESTDEV STK14_SUN3_19 auto 65535 4878540732 - dm epmnfsdg20 STK03_SUN3_1 auto 86783 1425889280 - dm epmnfsdg22 STK03_SUN3_9 auto 86783 1425889280 - dm epmnfsdg25 STK03_SUN3_19 auto 86783 1425889280 - dm epmnfsdg26 STK03_SUN3_20 auto 86783 1425889280 - v mmsc000 - ENABLED ACTIVE 14518272 SELECT mmsc000-01 fsgen pl mmsc000-01 mmsc000 ENABLED ACTIVE 14535680 STRIPE 4/64 RW sd epmnfsdg20-01 mmsc000-01 epmnfsdg20 0 3633920 0/0 STK03_SUN3_1 ENA sd epmnfsdg22-01 mmsc000-01 epmnfsdg22 0 3633920 1/0 STK03_SUN3_9 ENA sd epmnfsdg25-01 mmsc000-01 epmnfsdg25 0 3633920 2/0 STK03_SUN3_19 ENA sd epmnfsdg26-01 mmsc000-01 epmnfsdg26 0 3633920 3/0 STK03_SUN3_20 ENA [12:08:02][r...@nfs08:/]# vxassist -g epmnfsdg mirror mmsc000 alloc=TESTDEV VxVM vxassist ERROR V-5-1-437 Cannot allocate space to mirror 14518272 block volume
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