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VxVM root disk volume restrictions

Volumes on a bootable VxVM root disk have the following configuration restrictions:

• All volumes on the root disk must be in the disk group that you choose to be the bootdg disk group.
• The names of the volumes with entries in the LIF LABEL record must be standvol, rootvol, swapvol, and dumpvol (if present). The names of the volumes for other file systems on the root disk are generated by appending vol to the name of their mount point under /.
• Any volume with an entry in the LIF LABEL record must be contiguous. It can have only one subdisk, and it cannot span to another disk.
• The rootvol and swapvol volumes must have the special volume usage types root and swap respectively.
• Only the disk access types auto with format hpdisk, and simple are suitable for use as VxVM root disks, root disk mirrors, or as hot-relocation spares for such disks. An auto-configured cdsdisk format disk, which supports the Cross-platform Data Sharing (CDS) feature, cannot be used. The vxcp_lvmroot and vxrootmir commands automatically configure a suitable disk type on the physical disks that you specify are to be used as VxVM root disks and mirrors.
• The volumes on the root disk cannot use dirty region logging (DRL).

In addition, the size of the private region for disks in a VxVM boot disk group is limited to 1MB, rather than the usual default value of 32MB. This restriction is necessary to allow the boot loader to find the /stand file system during Maintenance Mode Boot.