In this section, operation outline of volume creation is explained.
Please use as a reference when configuring the environment.
For details, see the Command Reference.
Information
For the order of mirroring system disks, see "Chapter 7 How to Set and Cancel System Disk Mirroring Using Commands."
Note
For PRIMECLUSTER Systems
In order to define the configuration of GDS objects such as classes and volumes, PRIMECLUSTER resources must be registered in advance. For details on registering resources, see "PRIMECLUSTER Installation and Administration Guide."
(1) Creating a mirror volume
The procedure which carries out the mirroring of physical disks c1t0d0 and c2t0d0, and creates a volume as an example is shown.
1) Registering disks to class
Register the physical disks with a class. When the specified class does not exist, it will be created automatically.
Example) Registering physical disks c1t0d0 and c2t0d0 to local class "Local", and name these "Disk1" and "Disk2".
# sdxdisk -M -a type=local -c Class1 -d c1t0d0=Disk1,c2t0d0=Disk2 |
Information
When registering disks to shared class, you must specify the "scope" attribute with the -a option. See an example below.
# sdxdisk -M -c Class1 -a type=shared,scope=node1:node2 -d c1t0d0=Disk1,c2t0d0=Disk2 |
2) Connecting the disks to a mirror group
Connect the disks to a mirror group. When the specified mirror group does not exist, it will be created automatically.
Example: Connecting "Disk1" and "Disk2" to mirror group "Group1".
# sdxdisk -C -c Class1 -g Group1 -d Disk1,Disk2 |
3) Creating a mirror volume
Create a volume within the mirror group.
Example: Creating a volume of 1,000 blocks within mirror group "Group1", and assigning a volume name "Volume1".
# sdxvolume -M -c Class1 -g Group1 -v Volume1 -s 1000 |
After returning from the command, synchronization copying will automatically begin.
4) Confirming the completion of procedure
Confirm that the synchronization copying is complete.
Example: Confirming synchronization copying of volume "Volume1" is complete.
# sdxinfo -S -o Volume1 OBJ CLASS GROUP DISK VOLUME STATUS ------ ------- ------- ------- ------- -------- slice Class1 Group1 Disk1 Volume1 ACTIVE slice Class1 Group1 Disk2 Volume1 COPY |
If all the displayed slices' STATUS fields are "ACTIVE," synchronization copying is complete.
If the synchronization copying is still in progress, "COPY" will be displayed in the STATUS field.
Using the -e long option, you can check the progress of the synchronization copying.
For details, see "D.6 sdxinfo - Display object configuration and status information."
(2) Creating a single volume
The procedure which creates a single volume as an example using physical disk c1t0d0 is shown.
1) Registering a disk to class
Register the physical disk with a class. When the specified class does not exist, it will be created automatically.
Example: Registering physical disk c1t0d0 to shared class "Shared", and assigning the name "Disk1".
# sdxdisk -M -c Class1 -a type=shared,scope=node1:node2 -d c1t0d0=Disk1:single |
2) Creating a single volume
Create a volume within the single disk.
Example: Creating a volume of 1,000 blocks within single disk "Disk 1", and assigning a volume name "Volume1".
# sdxvolume -M -c Class1 -d Disk1 -v Volume1 -s 1000 |
(3) Creating a large-capacity volume (using concatenation)
The procedure which concatenates physical disks c1t0d0 and c2t0d0, and creates a volume as an example is shown.
1) Registering disks to class
Register the physical disks with a class. When the specified class does not exist, it will be created automatically.
Example: Registering physical disks c1t0d0 and c2t0d0 to shared class "Shared", and assigning the names "Disk1" and "Disk2" respectively.
# sdxdisk -M -c Class1 -a type=shared,scope=node1:node2 -d c1t0d0=Disk1,c2t0d0=Disk2 |
2) Connecting the disks to a concatenation group
Connect the disks to a concatenation group. When the specified concatenation group does not exist, it will be created automatically.
Example: Connecting "Disk1" and "Disk2" to concatenation group "Group1".
# sdxdisk -C -c Class1 -g Group1 -d Disk1,Disk2 -a type=concat |
3) Creating a large-capacity volume
Create a volume within the concatenation group.
Example: Creating a volume of 1,000,000,000 blocks within concatenation group "Group1", and assigning a volume name "Volume1".
# sdxvolume -M -c Class1 -g Group1 -v Volume1 -s 1000000000 -a pslice=off |
(4) Creating a stripe volume
The procedure which carries out striping of physical disk c1t0d0 and c2t0d0, and creates volume as an example is shown.
1) Registering disks to class
Register the physical disks with a class. When the specified class does not exist, it will be created automatically.
Example: Registering physical disks c1t0d0 and c2t0d0 to shared class "Shared", and assigning the names "Disk1" and "Disk2" respectively.
# sdxdisk -M -c Class1 -a type=shared,scope=node1:node2 -d c1t0d0=Disk1,c2t0d0=Disk2 |
2) Connecting the disks to a stripe group
Connect the disks to a stripe group. When the stripe group does not exist, it will be created automatically.
Example: Connecting "Disk1" and "Disk2" to stripe group "Group1".
# sdxdisk -C -c Class1 -g Group1 -d Disk1,Disk2 -a type=stripe,width=32 |
3) Creating a stripe volume
Create a volume within the stripe disk.
Example: Creating a volume of 1,000 blocks within stripe group "Group1", and assigning a volume name "Volume1".
# sdxvolume -M -c Class1 -g Group1 -v Volume1 -s 1000 -a pslice=off |
(5) Creating a mirror volume (Combining striping and mirroring)
Example: Configuring stripe groups with physical disks c1t0d0 and c2t0d0, and c3t0d0 and c4t0d0 respectively, and creating a volume by mirroring those two stripe groups.
1) Registering disks to class
Register the physical disks with a class. When the specified class does not exist, it will be created automatically.
Example: Registering physical disks c1t0d0, c2t0d0, c3t0d0 and c4t0d0 to shared class "Shared", and assigning the names "Disk1", "Disk2", "Disk3" and "Disk4" respectively.
# sdxdisk -M -c Class1 -a type=shared,scope=node1:node2 \ |
2) Connecting the disks to a stripe group
Connect the disks to a stripe group. When the stripe group does not exist, it will be created automatically.
Example: Connecting "Disk1" and "Disk2" to stripe group "Group1".
# sdxdisk -C -c Class1 -g Group1 -d Disk1,Disk2 -a type=stripe,width=32 |
Connecting Disk3 and Disk4 to stripe group Group2.
# sdxdisk -C -c Class1 -g Group2 -d Disk3,Disk4 -a type=stripe,width=32 |
3) Connecting the stripe groups to a mirror group
Connect the stripe groups to a mirror group. When the specified mirror group does not exist, it will be created automatically.
Example: Connecting the stripe group "Group1" and "Group2" to mirror group "Group3".
# sdxgroup -C -c Class1 -h Group3 -l Group1,Group2 -a type=mirror |
The "-a type=mirror" option is omissible.
4) Creating a mirror volume
Create a volume within the highest level mirror group.
Example: Creating a volume of 1,000 blocks within mirror group "Group3", and assigning a volume name "Volume1"
# sdxvolume -M -c Class1 -g Group3 -v Volume1 -s 1000 -a pslice=off |
After returning from the command, synchronization copying will automatically begin.
5) Confirming the completion of procedure
Confirm that the synchronization copying is complete.
Example: Confirming synchronization copying of volume "Volume1" is complete.
# sdxinfo -S -o Volume1 |
If all the displayed slices' STATUS fields are "ACTIVE," synchronization copying is complete.
If the synchronization copying is still in progress, "COPY" will be displayed in the STATUS field.
Using the -e long option, you can check the progress of the synchronization copying.
For details, see "D.6 sdxinfo - Display object configuration and status information."
