How to Place a Submirror Offline and Online (Command Line)

After checking the prerequisites ("Prerequisites for Maintaining DiskSuite Objects"), and the preliminary information ("Preliminary Information for Mirrors"), use the metaoffline(1M) command to offline a submirror, or the metaonline(1M) command to online a submirror. Refer to the metaoffline(1M)or metaonline(1M)man pages for more information.

Example -- Placing a Submirror Offline

# metaoffline d10 d11
d10: submirror d11 is offlined

This takes submirror d11 offline from mirror d10. Reads will continue to be made from the other submirror. The mirror will be out of sync as soon as the first write is made. This inconsistency is corrected when the offlined submirror is brought back online.

Example -- Placing a Submirror Online

# metaonline d10 d11
d10: submirror d11 is onlined

When ready (for example, after replacing a disk), the submirror d11 is brought back online.

The metaonline(1M) command can only be used when a submirror was taken offline by the metaoffline(1M) command. After the metaonline(1M) command runs, DiskSuite automatically begins resyncing the submirror with the mirror.

The metaoffline(1M) command's functionality is similar to that offered by metadetach(1M) however metaoffline(1M) does not sever the logical association between the submirror and the mirror.