PRIMECLUSTER Global Disk Services Configuration and Administration Guide 4.2 (Linux)

6.2.5 Configuring an Environment

1) Mirroring system disks

In preparatory for alternative boot environment creation, mirror system disks. This sub-section describes the procedures for mirroring system disks in the configuration as shown in "System Configuration."

For details on GDS Management View, see "System Disk Settings [Itanium]."

1-1) Exit all active application programs.

To ensure safe mirroring, exit all running application programs. If higher security is required, you should make backups of system disks.

1-2) Register system disks with the root class.

# sdxdisk -M -c System -a type=root -d sda=Root1:keep,sdb=Root2:undef,sdc=Var1:keep,sdd=Var2:undef

1-3) Connect system disks to groups respectively.

# sdxdisk -C -c System -g Group1 -d Root1,Root2 -v 1=root:on,2=boot:on,3=efi:on
# sdxdisk -C -c System -g Group2 -d Var1,Var2 -v 1=swap:on,2=var:on,3=usr:on

1-4) Confirm that the mirror definition is complete.

# sdxroot -M -c System -d Root1,Var1

1-5) Reboot the system.

# shutdown -r now

1-6) Confirm that mirroring is complete.

Use the mount(8) command or the sdxinfo command to verify that the system disks have been mirrored properly.

 

2) Creating proxy groups

Create the disk areas (proxy groups) for backing up system disks. The following describes the procedure for creating proxy groups in the configuration as shown in "System Configuration."

2-1) Register the disks with the root class.

# sdxdisk -M -c System -d sde=Proot1,sdf=Proot2,sdg=Pvar1,sdh=Pvar2

For details on GDS Management View, see "Class Configuration."

2-2) Connect the disks to groups respectively.

# sdxdisk -C -c System -g Proxy1 -d Proot1,Proot2
# sdxdisk -C -c System -g Proxy2 -d Pvar1,Pvar2

For details on GDS Management View, see "Group Configuration."

 

3) Joining the proxy groups

Copy data in system disks into the backup disks by joining a group of the backup disks (proxy group) to a group of the system disks (master group). The following describes the procedure for joining proxy groups in the configuration as shown in "System Configuration."

3-1) Join the proxy groups.

# sdxproxy Join -c System -m Group1 -p Proxy1 -a root=Proot:on,boot=Pboot:on,efi=Pefi:on
# sdxproxy Join -c System -m Group2 -p Proxy2 -a swap=Pswap:on,var=Pvar:on,usr=Pusr:on

For details on GDS Management View, see "Join."

3-2) Confirm that synchronization copying is complete.

# sdxinfo -S -c System
OBJ    CLASS   GROUP   DISK    VOLUME  STATUS
------ ------- ------- ------- ------- --------
slice  System  Group1  Root1   root    ACTIVE
slice  System  Group1  Root2   root    ACTIVE
slice  System  Group1  Root1   boot    ACTIVE
slice  System  Group1  Root2   boot    ACTIVE
slice  System  Group1  Root1   efi     ACTIVE
slice  System  Group1  Root2   efi     ACTIVE
slice  System  Group2  Var1    swap    ACTIVE
slice  System  Group2  Var2    swap    ACTIVE
slice  System  Group2  Var1    var     ACTIVE
slice  System  Group2  Var2    var     ACTIVE
slice  System  Group2  Var1    usr     ACTIVE
slice  System  Group2  Var2    usr     ACTIVE
slice  System  Proxy1  Proot1  Proot   STOP
slice  System  Proxy1  Proot2  Proot   STOP
slice  System  Proxy1  Proot1  Pboot   STOP
slice  System  Proxy1  Proot2  Pboot   STOP
slice  System  Proxy1  Proot1  Pefi    COPY
slice  System  Proxy1  Proot2  Pefi    COPY
slice  System  Proxy2  Pvar1   Pswap   STOP
slice  System  Proxy2  Pvar2   Pswap   STOP
slice  System  Proxy2  Pvar1   Pvar    COPY
slice  System  Proxy2  Pvar2   Pvar    COPY
slice  System  Proxy2  Pvar1   Pusr    COPY
slice  System  Proxy2  Pvar2   Pusr    COPY

If synchronization copying is in process, COPY is displayed in the STATUS field for slice information of the copy destination proxy group. If the STATUS of every slice in the proxy group is STOP, the synchronization copying is completed.

On the GDS Management View main screen, slices composing proxy volumes are indicated as below.

• If synchronization copying is in process, the status is "copy" and the icon color is blue.

• After synchronization copying is completed, the status is "stop" and the icon color is black.