This section explains how to use the Mirror Information window to view and modify mirror options.
You can change a mirror's pass number, and read and write policies.
Mirror options can be changed while the mirror is running.
If you need to change the interlace value of stripe that is used as a submirror, refer to "How to Change the Interlace Value of Stripes in Mirrors (DiskSuite Tool)".
Table 4-2 describes mirror options that can be configured.
Table 4-2 Mirror Options
You can use the Mirror Information window to set options for mirrors, including read and write policy, the order in which mirrors are resynced during reboot, and if a submirror has a hot spare.
Make sure you have met the prerequisites ("Prerequisites for Changing DiskSuite Objects") and have read the preliminary information ("Preliminary Information for Changing Mirror Options").
Double-click an existing Mirror object in the Objects list.
The Mirror object appears on the canvas.
Display the Mirror object's pop-up menu and choose Info.
The Mirror Information window appears.
Change the desired options.
Refer to Table 4-2 for a description of mirror options. After making a change to a mirror option, click Close.
Click the top rectangle of the Mirror object, then click Commit.
To verify that the change was committed, display the Configuration Log.
After checking the prerequisites listed ("Prerequisites for Changing DiskSuite Objects"), and the preliminary information ("Preliminary Information for Changing Mirror Options"), use the metaparam(1M) command to display and change a mirror's options. Refer to Table 4-2 for a description of mirror options. For more information, refer to the metaparam(1M) man page.
# metaparam -r geometric d30 # metaparam d30 d30: mirror current parameters are: Pass: 1 Read option: geometric (-g) Write option: parallel (default) |
The -r option changes a mirror's read policy to geometric.
# metaparam -w serial d40 # metaparam d40 d40: mirror current parameters are: Pass: 1 Read option: roundrobin (default) Write option: serial (-S) |
The -w option changes a mirror's write policy to serial.
# metaparam -p 5 d50 # metaparam d50 d50: mirror current parameters are: Pass: 5 Read option: roundrobin (default) Write option: parallel (default) |