HA切换时磁盘挂载慢的问题 HACMP配置中需要对EMC和HDS存储的配置添加Custom Disk Methods
EMC配置（EMC Host Connectivity Guide for IBM AIX） For IBM Fibre Channel configurations with PowerPath 3.0.3 and higher: –Disk Type (PdDvLn field from CuDv) = disk/pseudo/power Method to identify ghost disks = SCSI3 Method to determine if a reserve is held = SCSI_TUR Method to break a reserve = /usr/lpp/EMC/Symmetrix/bin/emcpowerreset or –/usr/lpp/EMC/CLARiiON/bin/emcpowerreset Break reserves in parallel =true Method to make the disk available = MKDEV *For IBM SCSI configurations with PowerPath 3.0.3, 3.0.4: –Disk Type (PdDvLn field from CuDv) = disk/pseudo/power Method to identify ghost disks = SCSI2 Method to determine if a reserve is held = SCSI_TUR Method to break a reserve = /usr/lpp/EMC/CLARiiON/bin/emcpowerreset Break reserves in parallel =true Method to make the disk available = MKDE
HDS配置（HDLM手册有说明） Adding Custom Disk Methods 1. From the SMIT window, display the Add Custom Disk Methods window. Choose the following sequence of menu items to display this window: smitty --> Communications Applications and Services --> HACMP for AIX --> Extended Configuration --> Extended Resource Configuration --> HACMP Extended Resource Configuration --> Configure Custom Disk Methods and finally choose Add Custom Disk Methods. 2. In the Add Custom Disk Methods window, specify the items as shown below: The items to be set and setting contents are shown below: – When a Fibre Channel connection is used with HACMP Change the custom disk method settings as described below. The description includes information about the items and contents of the settings. -->Disk Type (PdDvLn field from CuDv) * When a HP XP series is used: [disk/fcp/HP] * When a Thunder 9500V series, Lightning 9900V series (excluding HP XP series), Hitachi USP (excluding HP XP series), Universal Storage Platform V/VM (excluding HP XP20000 and HP XP24000), or Hitachi AMS/WMS series is used: [disk/fcp/Hitachi] -->Method to identify ghost disks [SCSI3] -->Method to determine if a reserve is held [/usr/DynamicLinkManager/cluster/dlm_hacmp_gdisk_reserve_check] -->Method to break a reserve [TARGET] -->Break reserves in parallel [false] -->Method to make the disk available [MKDEV] 3. When you finish specifying the settings, click the OK button. 4. HACMP Verification and Synchronization.
