Veritas replication - Volume in RVG is in DETACHED DETACH state

Veritas replication - Volume in RVG is in DETACHED DETACH state

It may happen in following cases:

- Either one of disk used in disk group has failed
- Or one of disk has lost all path at DMP level

In this case, volume has been detached from RVG and status will be something like below:

# vxprint | grep DETACHED
v  product_vol    product_rvg  DETACHED DETACH   2306777088 SELECT  -      fsgen

Solution

>> Check /var/log/message and 'vxdisk list' output to check which disks is causing problem.

>> Resolve underlying disk issue

>> Stop replication on problematic system/site

# vradmin -g product_dg stoprep product_rvg secondary-vvr-host


>> On , remove 'DETACHED DETACH' volume from the rvg ( if it fails, proceed to next steps)

# vradmin -g product_dg -f delvol product_rvg product_vol

>> Remove the DCM log from the removed volume

# vxassist -g product_dg remove log product_vol

>> If VVR running under VCS, offline RVGLogOwner and RVGShredGroup from all nodes

# hagrp -offline RVGLogOwner -sys node-a
# hagrp -offline RVGLogOwner -sys node-b
# hagrp -offline RVGShredGroup -sys node-a
# hagrp -offline RVGShredGroup -sys node-b

>>Else, stop RVG and VVR

# vxrvg -g product_dg stop product_rvg

# /etc/init.d/vras-vradmind.sh stop

>> start volume

# vxvol -g product_dg -f start product_vol


>> On secondary, add DCM log back

# vxassist -g disk_group addlog vol_name logtype=dcm nlog=1


>> Add the volume to the RVG on secondary

# vradmin -g product_dg addvol product_rvg product_vol


>> On primary, start the autoresynchronization (UNFORTUNATELY, you need to sync whole volume !)

# vradmin -g product_dg -a startrep product_rvg secondary-vvr-host
# vradmin -g product_dg  pauserep product_rvg


>> Restrict bandwidth limit if you are replicaton across DC

# vradmin -g product_dg set product_rvg secondary-vvr-host bandwidth_limit=50mbps


>> Resume replication

# vradmin -g product_dg  resumerep product_rvg


>> Monitor replication status

# vxrlink -g product_dg status -i 5 rlk_secondary-vvr-host

Reference : 
-Symantec tech note
- Description of important fields displayed by the vradmin repstatus command