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The disk container files are created using the dd command. This command takes an input file name, an output file name, a block size, and a count as parameters. When instructed to read from /dev/zero , the command creates the output file and fills it with (block-size * count) zero bytes. Each file may be built as large as needed.
The Please note: The maximum disk size supported by MPE/iX is 512GB. The maximum size for HP-UX is 2TB.
Use the following steps to create a new disk container file:
Step | Command | |
|---|---|---|
| 1 | Change to the directory where you store your virtual disks. | Example:
|
| 2 | Create an empty disk container. Note that the actual size of the disk will depend on the requirements of your emulated system. | Example virtual disk creation (size 20GB):
|
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The new virtual disk must be added to the configuration file of the Charon-PAR instance. This requires two commands:
| Step | Configuration file entry | |
|---|---|---|
| 1 | Load the SCSI device. | load DKXnnn |
| 2 | Link device with disk container file. | |
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After booting the emulated system with the new disk added to the configuration file, check if HP-UX did recognize it:
| Command | Example |
|---|---|
To list all known disks on the system, enter the following command:
| The disk with device path 0/0/1/0.2.0 (DKA200) is the new disk:
|
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On HP-UX disks are typically used as part of LVM volume groups. Alternatively, a disk can be formatted using the traditional HFS filesysstem. LVM logical volumes can be used with HFS or JFS filesystems. JFS is HP's version of the Veritas journaling filesystem. Below, two samples show the two different approaches.
Please Please refer to your system's documentation and the man-pages for detailed information about the commands used in the examples.
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The following example, which shows how to create a filesystem and mount the disk, will use HFS on a standalone disk:
| Step | Command | |
|---|---|---|
| 1 | Create a filesystem on the new disk. Please note: LVM is now the preferred method to use disks on HP-UX. This example uses a traditional filesystem for simplicity. | Example to create a hfs filesystem on DKA200:
|
| 2 | Mount the disk to a mount point (create mount point first if it does not exist yet). | Example to mount DKA200 on /mnt:
|
LVM volume group with JFS file system
| Step | Command | |
|---|---|---|
| 1 | Create a physical (non-bootable) volume. | # pvcreate -f /dev/rdsk/c0t0d0 |
| 2 | Create the volume group file structure. | Example to create structure for volume group 1:
0xNN0000 is the minor device number. |
| 3 | Create volume group. | Example to create volume group 1 with physical volume created above:
|
| 4 | Create logical volume. | Example to create a logical volume named myname of size-MB megabytes:
|
| 5 | Create filesystem on logical volume. | Example to create a JFS (vxfs) filesystem on logical volume myname:
|
| 6 | Mount filesystem to a mount point (create mount point first if it does not exist yet). | Example to mount the new filesystem on /mnt:
|
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This example shows one way to add LDEV 2:
| Step | Commands | |
|---|---|---|
| 1 | Log in to Manager.sys. | :HELLO MANAGER.SYS |
| 2 | Start sysgen. | :SYSGEN |
| 3 | Enter the following commands. | sysgen> ioio> adev 2 id=ST19171N path=0/0/1/0.1.0io> holdio> exitsysgen> keepkeeping to group CONFIG.SYSPurge old configuration (yes/no)? yessysgen> |
| 4 | Exit sysgen. | sysgen> exit |
| 5 | Activate the configuration. | :DOIONOW |
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The following example shows how to add a new LDev 2 named MEMBER2 to the System Volume Set:
| Step | Command | |
|---|---|---|
| 1 | Start volutil. | :VOLUTIL |
| 2 | At the voltutil prompt add the new disk as a volume to the system volume set. | volutil: newvol MPEXL_SYSTEM_VOLUME_SET:MEMBER2 2 100 100 |
| 3 | Exit volutil. | volutil: exit |
The following example shows how to create a new volume set with LDev 2 as the master:
| Step | Command | |
|---|---|---|
| 1 | Start volutil. | :VOLUTIL |
| 2 | At the voltutil prompt create a new volume set with the new disk as the master volume. | volutil: newset USERSET MASTER 2 100 100 |
| 3 | Exit volutil. | volutil: exit |
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