Error Message

[root@HOST]:/ #vxprint  -htg ORALOG_DG
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 ORALOG_DG default   default  7000     1440529753.103.HOST

dm emc1_03a4    emc1_04b7    auto     65536    419348128 -

v  LVOL01       -            DISABLED ACTIVE   207618048 SELECT   -        fsgen
pl LVOL01-02    LVOL01       DISABLED ACTIVE   207618048 CONCAT   -        RW
sd emc1_03a4-01 LVOL01-02    emc1_03a4 0       207618048 0        emc1_04b7 ENA
dc LVOL01_dco   LVOL01       LVOL01_dcl
v  LVOL01_dcl   -            DISABLED CLEAN    75136    SELECT    -        gen

[root@HOST]:/ #vxvol -g ORALOG_DG start LVOL01
VxVM vxvol ERROR V-5-1-1201 Volume LVOL01_dcl has no associated data plexes
VxVM vxvol WARNING V-5-1-15415 Could not start DCO log volume; error = 24, retry = 1, ndcovols = 1
VxVM vxvol ERROR V-5-1-10128  DCO experienced IO errors during the operation. Re-run the operation after ensuring that DCO is accessible
 

DCO log is not valid

Removed dco log and re-added to volume, Started volume. 

#vxassist -g dgname remove log logtype=dco

#vxassist -g dgname addlog logtype=dco

#vxvol -g dgname start volumename

Checked file system using : fstyp -v /dev/vx/dsk/dgname/volname

If all good then can be mounted.

Note : Make sure there are no issues on the actual SAN disks.