If using EXT3 as a file system for GroupWise, disable H-Tree

  • 7010924
  • 12-Oct-2012
  • 28-Nov-2012

Environment

GroupWise 2012
GroupWise 8
GroupWise 7
SuSE Linux Enterprise Server 11
SuSE Linux Enterprise Server 10
SuSE Linux Enterprise Server 9

Situation

When choosing EXT3 as a file system for GroupWise, should H-Tree be enabled or disabled?

Resolution

It is strongly recommended that when using EXT3 as a file system for GroupWise, that the H-Tree function be disabled during the install of the OS.

Workaround:
See TID# 7011432 - Disable H-Tree Indexing on an ext3 Filesystem.

Cause

GroupWise Development has not tested nor certified the use of H-Tree with GroupWise and the impact of H-Tree's functionality on GroupWise is not known.

Status

Reported to Engineering

Additional Information

  • On SLES 11, H-Tree is enabled by default during the install of the OS.  Please be sure that it is disabled during the install.  If GroupWise is installed on a server where H-Tree was not disabled, it is recommended to move GroupWise to a new machine that does not have H-Tree enabled on it.
  • SLES 10 and older, have H-Tree disabled by default.
  • Currently GroupWise development does not believe H-Tree will impact GroupWise directly, it is suspected that it may affect some of the 3rd party integrations and files that GroupWise uses to run.
  • It is believed by some admins that H-Tree has had some negative impact on GroupWise in the past as well as having caused corruption in GroupWise.  Since Development has not actively been testing it, it is unknown if this truly was the case.  To err on the side of caution, development has asked H-Tree remain disabled.
  • H-Tree indexing is not a bad thing, and can be most beneficial to programs.

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