Lucent Technologies CentreVu Call Management System Release 3 Version 8 Guide

  Maintaining Mirrored Systems  CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Adding new disks to a standard mirrored system65
13. Add the new disks to the existing metadevices by entering the 
following command:
(where, again, 
 and  are the device names 
of the disks you have added).
The system responds with the following:
14. Restart CMS by entering the cmsadm 
or cmssvc 
command and 
selecting the cms_run
 option. When the run
 option menu displays, 
select start cms
.
15. Check the...

  Maintaining Mirrored Systems  CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Adding new disks to a nonstandard mirrored system66
Adding new disks to a nonstandard mirrored system3
A “nonstandard” disk drive addition is one that cannot take advantage of 
advanced features of the 
olds setup scripts because the disk 
configuration is not standard. The procedure is as follows:
1. Turn off CMS. (From the command line, enter the cmsadm 
or 
cmssvc 
command, and select the cms_run
 option. When the...

  Maintaining Mirrored Systems  CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Adding new disks to a nonstandard mirrored system67
7. Add the 
olds directories to your path:
8. Create new versions of the setup files by entering the following 
command:
 and  represent the device names of the 
disk drives added (remember that in a mirrored system, disk drives 
are always added in pairs). For example:
9. Load the file 
/olds/md.tab.new into an editor and check to make 
certain it names all
 of your...

  Maintaining Mirrored Systems  CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Adding new disks to a nonstandard mirrored system68
13. Grow the 
/cms file system by entering the following command:
If the operation should fail, do the following:
a. Restore the original md.tab file by entering the following 
command:
b.Look up the error message in Chapter 4, “Troubleshooting.”
14. Enter the following command:
Examine the output to make certain the disk drives you just added 
are part of the...

  Maintaining Mirrored Systems  CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Replacing a faulty disk69
Replacing a faulty disk3
This section explains how to replace a faulty disk. The system does not 
need to be powered off or rebooted to perform this procedure.
Step 1: Identify the 
faulty disk
3
A disk problem is usually indicated in the /var/adm/messages file. The 
following lines, for example, indicate a disk problem: 
Those lines, however, do not tell us which disk has the problem. One way...

  Maintaining Mirrored Systems  CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Replacing a faulty disk70
Step 2: Identify the 
submirrors
3
1. Add the Solstice DiskSuite directories to your path:
2. Enter a metastat
 command:
3. Scan the output of the metastat command to find the name of the 
faulty disk. The following lines, for example, indicate that the faulty 
c0t2d0 disk is in d20:
Be sure to check all
 the submirrors. If the disk is also listed under 
d11 or d12, it is a boot disk belonging...

  Maintaining Mirrored Systems  CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Replacing a faulty disk71
Step 3: Detach the 
submirrors
3
To detach a submirror means to put it off line so you can access its 
constituent disk drives. You detach a submirror with a metadetach
 
command. The command is in the format:
metadetach
 
where  is the mirror and  is the submirror to be 
detached. 
To continue our example, since c0t2d0 is part of d20, which is a submirror 
of d21, the detach command would be...

  Maintaining Mirrored Systems  CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Replacing a faulty disk72
Step 4: Remove 
state database 
replicas (boot disks 
only)
3
When you replace a boot disk, you must remove the state database 
replicas from the old disk and recreate them on the new one. A boot disk 
is one that is a member of metadevice d11 or d12 (see “Step 2: Identify 
the submirrors” on page 70).
If you fail to remove old replicas, the software will have an 
inaccurate picture of the...

  Maintaining Mirrored Systems  CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Replacing a faulty disk73
Step 6: Recreate 
the state database 
replicas
3
1. Recreate the primary boot disk replicas you removed earlier by 
entering the following command:
2. Recreate the secondary boot disk replicas you removed earlier by 
entering the following command:
3. Verify that the replicas were created:
The system lists the state database replicas currently on the system. 
The following, for example, shows...

  Maintaining Mirrored Systems  CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Replacing a faulty disk74
Step 7: Reattach 
the submirrors
3
1. Enter a metainit command to reinitialize the submirror. For example:
If you receive an “already set up” message, ignore it.
2. Reattach the submirror by issuing a metattach
 command. For 
example:
If the disk you are replacing is a boot disk, be sure to reattach 
both the submirrors of which it is a member. For example:
Step 8: Reboot the 
system (boot...