How to Expand a RAID5 Metadevice (Command Line)

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 a RAID5 metadevice. Refer to the metattach(1M) man page for more information.

In general, this is a short-term solution to a RAID5 metadevice running out of space. For performance reasons, it is best to have a "pure" RAID5 metadevice.

Example -- Adding a Slice to a RAID5 Metadevice

# metattach d2 c2t1d0s2
d2: column is attached

This example shows the addition of slice /dev/dsk/c2t1d0s2 to an existing RAID5 metadevice named d2.

Where to Go From Here

For a UFS, run the growfs(1M) command on the RAID5 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.