Veritas Storage Foundation™ and High Availability Solutions ...
Veritas Storage Foundation™ and High Availability Solutions ... Veritas Storage Foundation™ and High Availability Solutions ...
154Veritas Cluster Server: Configuring Oracle VM Server for SPARC for high availabilityConfiguring VCS to manage a Logical Domain using services from multiple I/O domainsIt is possible to bring the storage service groups online on another physicalsystem because resources configured to monitor back-end storage servicesare present in different service groups on each physical system. Thus, VCScannot prevent resources coming online on multiple systems. This may causedata corruption.To configure preonline trigger for each service group listed in the StorageSGattribute, run the following commands:■■# hagrp -modify stg-sg TriggerPath bin/AlternateIO/StorageSGwhere stg-sg is the name of the storage service group# hagrp -modify stg-sg TriggersEnabled PREONLINENote: Perform this procedure for storage service groups on each node.■Set connection time out period for virtual disksWhen a disk device is not available, I/O services from the guest domain to thevirtual disks are blocked.Symantec recommends to set a connection time out period for each virtualdisk so that applications times out after the set period instead of waitingindefinitely.# ldm add-vdisk timeout=seconds disk_name volume_name@service_nameldomSample VCS configuration for AlternateIO resource configured as afail over typeinclude "types.cf"cluster altio-cluster (UserNames = { admin = XXXXXXXXXXX }Administrators = { admin }HacliUserLevel = COMMANDROOT)system primary1 ()system alternate1 ()system primary2 ()
Veritas Cluster Server: Configuring Oracle VM Server for SPARC for high availabilityConfiguring VCS to manage a Logical Domain using services from multiple I/O domains155system alternate2 ()group aiosg (SystemList = { primary1 = 0, primary2 = 1 }AutoStartList = { primary1 }TriggerPath = "bin/AlternateIO"TriggersEnabled @primary1 = { PREONLINE }TriggersEnabled @primary2 = { PREONLINE })AlternateIO altiores (StorageSG @primary1 = { primary1-strsg = 1 }StorageSG @primary2 = { primary2-strsg = 1 }NetworkSG @primary1 = { primary1-nwsg = 0 }NetworkSG @primary2 = { primary2-nwsg = 0 })// resource dependency tree//// group aiosg// {// AlternateIO altiores// }group ldomsg (SystemList = { primary1 = 0, primary2 = 1 }AutoStartList = { primary1 })LDom ldmguest (LDomName = ldg1)requires group aiosg online local hard// resource dependency tree//
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154<strong>Veritas</strong> Cluster Server: Configuring Oracle VM Server for SPARC for high availabilityConfiguring VCS to manage a Logical Domain using services from multiple I/O domainsIt is possible to bring the storage service groups online on another physicalsystem because resources configured to monitor back-end storage servicesare present in different service groups on each physical system. Thus, VCScannot prevent resources coming online on multiple systems. This may causedata corruption.To configure preonline trigger for each service group listed in the <strong>Storage</strong>SGattribute, run the following comm<strong>and</strong>s:■■# hagrp -modify stg-sg TriggerPath bin/AlternateIO/<strong>Storage</strong>SGwhere stg-sg is the name of the storage service group# hagrp -modify stg-sg TriggersEnabled PREONLINENote: Perform this procedure for storage service groups on each node.■Set connection time out period for virtual disksWhen a disk device is not available, I/O services from the guest domain to thevirtual disks are blocked.Symantec recommends to set a connection time out period for each virtualdisk so that applications times out after the set period instead of waitingindefinitely.# ldm add-vdisk timeout=seconds disk_name volume_name@service_nameldomSample VCS configuration for AlternateIO resource configured as afail over typeinclude "types.cf"cluster altio-cluster (UserNames = { admin = XXXXXXXXXXX }Administrators = { admin }HacliUserLevel = COMMANDROOT)system primary1 ()system alternate1 ()system primary2 ()
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