Creating nested virtual disks
You can nest virtual disks inside one another provided that
you do not nest a virtual disk that has redundancy
(mirrors and RAID 4/5)
inside another virtual disk with redundancy. Doing this may
cause the virtual disk
driver to hang and suspend access to all configured virtual disks.
Three-way mirrors (created by nesting a mirror within a mirror) are an exception. You can configure these provided the master piece of the top level mirror is the second mirror. To configure vdisk5 as a 3-way mirror in the /etc/dktab file:
/dev/dsk/vdisk4 mirror 2 32 /dev/dsk/1s1 2016 3200 /dev/dsk/2s1 2016 3200 /dev/dsk/vdisk5 mirror 2 32 /dev/dsk/vdisk4 0 3200 /dev/dsk/3s1 2016 3200The Virtual Disk Manager nests the disk definitions in /etc/dktab correctly. If you edit /etc/dktab manually, ensure that definitions of virtual disks used as pieces occur before the definition of the virtual disk that references them.