After checking the prerequisites ("Prerequisites for Maintaining DiskSuite Objects"), and the preliminary information ("Preliminary Information for Expanding Slices and Metadevices"), use the metattach(1M) command to attach additional slices to each submirror. Each submirror in a mirror must be expanded. Refer to the metattach(1M) man page for more information.
# metastat d8: Mirror Submirror 0: d9 State: Okay Submirror 1: d10 State: Okay ... # metattach d9 c0t2d0s5 d9: component is attached # metattach d10 c0t3d0s5 d10: component is attached
For a UFS, run the growfs(1M) command on the mirror metadevice. Refer to "How to Grow a File System (Command Line)".
An application, such as a database, that uses the raw metadevice must have its own way of growing the added space.