Article ID: 54017
Article Type: Troubleshooting
Last Modified:
Read Performance from disk library mountpath using CIFS from Ibrix file system is poor.
Library operations such as Synthetic Full, auxiliary copy, or restore suffer slow read performance when using CIFS paths from HP StoreAll Storage using Ibrix file system. Jobs take a long time to complete.
Ibrix file system's "enable_oplocks" setting is set to true/enabled on the active Fusion Manager (FM) settings. However, it is set to false/disabled at the nodes HP-SMB/CIFS stack registry on all File Serving Nodes (FSNs). This inconsistency between FM and FSN settings has strong impact on performance of some type of read workloads.
On all FSNs :
# /opt/likewise/bin/lwregshell ls "[HKEY_THIS_MACHINE\Services\lwio\Parameters\Drivers\ibfs]"
# /opt/likewise/bin/lwregshell set_value "[HKEY_THIS_MACHINE\Services\lwio\Parameters\Drivers\ibfs]" "EnableOplocks" 1
# /opt/likewise/bin/lwregshell ls "[HKEY_THIS_MACHINE\Services\lwio\Parameters\Drivers\ibfs]"
# ibrix_server -s -t cifs -c restart
See following HP article for details: