What are the diskset naming conventions?
Disksets use this naming convention:
/dev/md/setname
Metadevices within the shared diskset use these naming conventions:
/dev/md/setname/{dsk | rdsk}/dnumber
where setname is the name of the diskset, and number is the metadevice number (usually between 0-127).
Hot spare pools use setname/hspxxx, where xxx is in the range 000-999.
Metadevices within the local diskset have the standard DiskSuite metadevice naming conventions. (See Table 1-4.)
What are the maximum number of disksets possible?
32 (though the default is 4). The actual number of shared disksets is always one less than the number configured, to account for the local diskset.
What are the hardware requirements for a diskset?
Currently, disksets are only supported on SPARCstorage Array drives. Disksets do not support SCSI disks.
Three or more SPARCstorage Arrays are recommended to avoid losing one-half of the configuration, which would result in the diskset being inaccessible.
The two hosts connected to the shared disks must be "symmetric." The shared disk drives must be the same. (Refer to the next question for specifics.)
What are the requirements for shared disk drive device names?
A shared disk drive must be seen on both hosts at the same device number (c#t#d#). The disk drive must also have the same major/minor number. If the minor numbers are not the same on both hosts, typically you see the message "drive c#t#d# is not common with host xxxx" when adding drives to the diskset. Finally, the shared disks must use the same driver name (ssd). See Solstice DiskSuite 4.2.1 User's Guide for more information on setting up shared disk drives in a diskset.
Are disksets supported on single-host configurations?
Disksets are supported in single-host configurations, but the disksets still must be manually "taken" and "released." (See "Administering Disksets".) Usually, this is too much trouble for non-HA use.
Are disksets supported on the x86 platform?
No.
What are the requirements for creating a diskset?
To create a diskset, you need root in group 14, or you need a /.rhosts file entry containing the other hostname (on each host).
Can a file system that resides on a metadevice in a diskset be mounted automatically at boot via the /etc/vfstab file?
No. The necessary diskset RPC daemons (rpc.metad and rpc.metamhd) do not start early enough in the boot process to permit this. Additionally, the ownership of a diskset is lost during a reboot.