IJ45661: DISK FENCING QUARANTAINE POLICY NOT USED EVEN IF SMIT SHOWS YES

APAR status

• Closed as program error.

Error description

• 'smitty cm_cluster_quarintine_disk_dialog'
  shows 'Disk Fencing' = 'Yes' even if no
  stanza with 'policy = "scsi"' exists
  in HACMPsplitmerge ODM.
  
  But PowerHA's clvaryonvg event script
  does not call the required commands,
  if the stanza is missing.
  
  hacmp.out looks like:
  ...
  +[RG]:cl_activate_vgs(0.105):[VG][vgs_chk:103]
   clvaryonvg -n [VG]
  +[RG]:clvaryonvg(0.011):[VG][985] version=1.21.7.22
  ...
  +[RG]:clvaryonvg(0.069):[VG][1098]
   clodmget -n -q policy=scsi -f value HACMPsplitmerge
  +[RG]:clvaryonvg(0.073):[VG][1098] SCSIPR_ENABLED=''
  +[RG]:clvaryonvg(0.074):[VG][1098]
   typeset SCSIPR_ENABLED
  +[RG]:clvaryonvg(0.074):[VG][1099]
   clodmget -q $'name like \'*VOLUME_GROUP\'
   and value = [VG]' -f group -n HACMPresource
  +[RG]:clvaryonvg(0.077):[VG][1099] resgrp=[RG]
  +[RG]:clvaryonvg(0.077):[VG][1099] typeset resgrp
  +[RG]:clvaryonvg(0.077):[VG][1100] [[ '' == Yes ]]
  +[RG]:clvaryonvg(0.078):[VG][1134]
   : Operations such as varying on the volume group
   are likely to
  +[RG]:clvaryonvg(0.078):[VG][1135]
   : require read/write access. So, set any
   volume group fencing appropriately.
  +[RG]:clvaryonvg(0.078):[VG][1137]
   cl_set_vg_fence_height -c [VG] rw
  ...
  
  and so a fallover event fails, if the disks are
  configured with Persistent Reserve for the Disk
  Fencing Quarantaine Policy.
  

Local fix

Problem summary

• While modifying cluster to define only CRITICAL_RG value using
  below command
  ?clmgr modify cluster CRITICAL_RG=RG1? this issue will be
  observed. In this case Quarantine policy is not provided hence,
  only CRITICAL_RG value will be updated
  in the ODM and will not have the Quarantine Policy in the ODM.
  

Problem conclusion

• Code change is done to verify if Quarantine Policy is also
  provided with CRITICAL_RG or not. Only Critical_RG value
  updating will not be supported from now.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IJ44703

• APAR is sysrouted TO one or more of the following:

  IJ45770 IJ45771

Fix information

• Fixed component name

  POWERHA SYSMIR

• Fixed component ID

  5765H3900

Applicable component levels