Veritas Storage Foundation™ and High Availability Solutions ...

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72Storage Foundation and High Availability Solutions support for Oracle VM Server for SPARCSplit Storage Foundation stack modelShrinking a VxFS file system, on the other hand, requires you to first shrinkthe file system in the guest domain using the fsadm command, and then thevolume in the control domain using the vxassist command. Using thevxassist command requires you to use the -f option of the command, as inthe following example.# vxassist -g [diskgroup] -f shrinkto volume lengthCaution: Do not shrink the underlying volume beyond the size of the VxFS filesystem in the guest as this can lead to data loss.■■■■■Exporting a volume set to a guest domain is not supported.Veritas Volume Replicator is not supported in the Split Storage Foundationstack model.Multi-volume filesets/DSTFile-level SmartsyncThe following VxFS tunables are not set to their default values based on theunderlying volume layout, due to VxFS being in the guest domain and VxVMbeing installed in the control domain:■■■read_pref_iowrite_pref_ioread_nstream■write_nstreamIf desired, you can set the values of these tunables based on the underlyingvolume layout in the /etc/vx/tunefstab file.See the Veritas Storage Foundation Administrator's Guide for more informationabout tuning I/O.■Storage Foundation Cluster File System is not recommended in this deploymentmodel.
Storage Foundation and High Availability Solutions support for Oracle VM Server for SPARCGuest-based Storage Foundation stack model73Guest-based Storage Foundation stack modelFigure 4-2Guest-based Storage Foundation stack modelGuest Domain(Virtual Machine)VxFSVxVM/CVMDMPControl domain(I/O Control Point)Virtual Disk ServerVirtual Disk ClientVirtual Disk(Path A)Virtual Disk(Path B)HypervisorDomain ChannelPath AServerPath BStorageFigure 4-2 illustrates the guest-based Storage Foundation stack model with guestlogical domains.How Storage Foundation and High Availability Solutions works in theguest domainsThe entire Storage Foundation stack is co-located within the guest in thisdeployment model.Symantec recommends that you export all paths to a disk which is being exportedto a guest and let Veritas DMP do the multi-pathing of the disk in the guest domain.Note: Only full SCSI disks can be used under Veritas Volume Manager (VxVM)and DMP in this model. Non-SCSI devices (volume, file, slice, etc) are not supported.
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Technical SupportContacting Technic
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8ContentsModifying the service grou
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14Overview of Veritas Storage Found
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18Storage Foundation and High Avail
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Veritas Storage Foundation™ and High Availability Solutions ...

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