Error Message

VxVM VVR vxvol ERROR V-5-1-3381 Cannot dissociate SRL while rvg (dava03A_rvg) is started, unless rvg is in PASSTHRU mode

The above error indicates that I/Os are still running and the SRL volume can not be disassociated while volume is still active. (unless RVG is in passthru mode, which it isn't the case here).

Depending on a certain condition or situation, there is a need to disassociate SRL volume out of the RVG and to re associate it back. The requirement to diassociate the SRL volume is replication need to be stopped first .
 

There are two ways to stop replication. Please see the below 2 commands:

** using vxrlink command to detach the rlink:

    # vxrlink -g dava03vg det rlk_dava03b_dava03A_rvg
    VxVM VVR vxrlink ERROR V-5-1-6467 Data volumes are in use.

If detaching is necessary, use the force detach option (-f). Before restarting replication a complete synchronization of the secondary data volumes must then be performed.

    # vxrlink -g dava03vg -f det rlk_dava03b_dava03A_rvg

    VxVM VVR vxrlink INFO V-5-1-6466 Data volumes are in use. Before restarting replication a complete synchronization of the secondary data volumes must be performed.
    

** using vradmin command to stop the replication:

   # vradmin -g dava03vg -f stoprep dava03A_rvg
    VxVM VVR vradmin WARNING V-5-52-285  Secondary or Bunker will become out-of-date.
    vradmin: Continue with stoprep (y/n)? y
    Message from Primary:
    VxVM VVR vxrlink INFO V-5-1-6466 Data volumes are in use. Before restarting replication a complete synchronization of the secondary data volumes must be performed.
    

Both of the above commands will stop the replication gracefully.

As a result of the above command, the RLINK will be in 'DETACHED STALE' state on the primary site.

On the PRIMARY site:

rv dava03A_rvg  1            ENABLED  ACTIVE   primary  1         data1srlvol
rl rlk_dava03b_dava03A_rvg dava03A_rvg DETACHED STALE 192.168.30.201 dava03vg rlk_dava03p_dava03A_rvg                                               <<<<  rlink in "DETACHED STATE" now
v  data1vol     dava03A_rvg  ENABLED  ACTIVE   6291456  SELECT    -        fsgen

Then, when an attempt to disassociate the SRL Volume on the primary site, the following error may be observed:

# vxvol -f -g dava03vg  dis data1srlvol

VxVM VVR vxvol ERROR V-5-1-3381 Cannot dissociate SRL while rvg (dava03A_rvg) is started, unless rvg is in PASSTHRU mode

The above error indicates that I/Os are still running and the SRL volume can not be disassociated while volume is still active. (unless RVG is in passthru mode, which isn't the case here).

So, to exit from that situation, please perform the following:

1) Stop the application (as i/o needs to be stopped first)
2) umount filesystem(s) associated with the volume(s)
3) Stop the RVG 

The key here is the 'RVG' needs to be stopped first, after unmounting the filesystem:

# umount /data1vol
# vxrvg -g dava03vg stop dava03A_rvg   (ie: stop the rvg)

RVG state will turn into 'DISBALED CLEAN' state as per below:

rv dava03A_rvg  1            DISABLED CLEAN    primary  1         data1srlvol
rl rlk_dava03b_dava03A_rvg dava03A_rvg DETACHED STALE 192.168.30.201 dava03vg rlk_dava03p_dava03A_rvg

Once that's done, then the SRL volume can be disassociated successfully as per the below command.

# vxvol -f -g dava03vg  dis data1srlvol
 

Notice now, the SRL volume is out of the RVG.

v  data1srlvol  -            ENABLED  ACTIVE   1024000  SELECT    -        fsgen                            >>>    this SRL volume is now out of the RVG
pl data1srlvol-01 data1srlvol ENABLED ACTIVE   1024000  CONCAT    -        RW
sd dava03vg04-01 data1srlvol-01 dava03vg04 0   1024000  0         emc0_dd4 ENA

rv dava03A_rvg  1            DISABLED CLEAN    primary  1         (none)
rl rlk_dava03b_dava03A_rvg dava03A_rvg DETACHED STALE 192.168.30.201 dava03vg rlk_dava03p_dava03A_rvg
v  data1vol     dava03A_rvg  ENABLED  ACTIVE   6291456  SELECT    -        fsgen
pl data1vol-01  data1vol     ENABLED  ACTIVE   6291456  CONCAT    -        RW
sd dava03vg01-01 data1vol-01 dava03vg01 0      4120320  0         emc0_dd1 ENA
sd dava03vg02-01 data1vol-01 dava03vg02 0      2171136  4120320   emc0_dd2 ENA
pl data1vol-02  data1vol     ENABLED  ACTIVE   LOGONLY  CONCAT    -        RW
sd dava03vg02-02 data1vol-02 dava03vg02 2171136 128     LOG       emc0_dd2 ENA
pl data1vol-03  data1vol     ENABLED  ACTIVE   LOGONLY  CONCAT    -        RW
sd dava03vg03-01 data1vol-03 dava03vg03 0      128      LOG       emc0_dd3 ENA

Then, in order to reassociate the SRL volume back to the RVG, the following command needs to be run:
 

# vxvol -g dava03vg aslog dava03A_rvg data1srlvol
# vxprint -thg dava03vg

rv dava03A_rvg  1            DISABLED CLEAN    primary  1         data1srlvol
rl rlk_dava03b_dava03A_rvg dava03A_rvg DETACHED STALE 192.168.30.201 dava03vg rlk_dava03p_dava03A_rvg
v  data1vol     dava03A_rvg  ENABLED  ACTIVE   6291456  SELECT    -        fsgen
pl data1vol-01  data1vol     ENABLED  ACTIVE   6291456  CONCAT    -        RW
sd dava03vg01-01 data1vol-01 dava03vg01 0      4120320  0         emc0_dd1 ENA
sd dava03vg02-01 data1vol-01 dava03vg02 0      2171136  4120320   emc0_dd2 ENA
pl data1vol-02  data1vol     ENABLED  ACTIVE   LOGONLY  CONCAT    -        RW
sd dava03vg02-02 data1vol-02 dava03vg02 2171136 128     LOG       emc0_dd2 ENA
pl data1vol-03  data1vol     ENABLED  ACTIVE   LOGONLY  CONCAT    -        RW
sd dava03vg03-01 data1vol-03 dava03vg03 0      128      LOG       emc0_dd3 ENA
v  data1srlvol  dava03A_rvg  ENABLED  ACTIVE   1024000  SELECT    -        SRL                   >>>>    SRL volume now has been associated back to the RVG
pl data1srlvol-01 data1srlvol ENABLED ACTIVE   1024000  CONCAT    -        RW
sd dava03vg04-01 data1srlvol-01 dava03vg04 0   1024000  0         emc0_dd4 ENA

Then, from here,  proceed with the following step to restart the application:

# vxrvg -g dava03vg start dava03A_rvg                                                  >>>> Start the RVG first
# mount -t vxfs /dev/vx/dsk/dava03vg/data1vol /data1vol                     >>>> Mount the volume back
# vradmin -g dava03vg -a startrep dava03A_rvg                                    >>>> Start the replication

Message from Primary:
VxVM VVR vxrlink WARNING V-5-1-3359 Attaching rlink to non-empty rvg. Autosync will be performed.
VxVM VVR vxrlink INFO V-5-1-3614 Secondary data volumes detected with rvg dava03A_rvg as parent:
VxVM VVR vxrlink INFO V-5-1-6183 data1vol:     len=6291456              primary_datavol=data1vol
VxVM VVR vxrlink INFO V-5-1-3365 Autosync operation has started