how to partion a disk in HPUX?

[datbtd]

In RedHat,  can use fdisk to partion a disk. How to do it in HPUX (11i v3)?

# ioscan -m dsf
Persistent DSF           Legacy DSF(s)
========================================
/dev/rdisk/disk2         /dev/rdsk/c2t1d0
/dev/rdisk/disk2_p1      /dev/rdsk/c2t1d0s1
/dev/rdisk/disk2_p2      /dev/rdsk/c2t1d0s2
/dev/rdisk/disk2_p3      /dev/rdsk/c2t1d0s3

I guess /dev/rdisk/disk2_p1/p2/p3 are partitions of /dev/rdisk/disk2. But I don't know how is it realized.

Thanks!

[Dennis Handly]

These are only needed for the boot disk on Integrity.

Any reason you want partitions?

[g3jza]

As Dennis said, it is only needed on boot disks of integrity servers(IA64). You can partition the integrity boot disks with the 'idisk' utilitity. man idisk.

[datbtd]

Hi Dennis,

Thanks for your reply.  I just wonder how the partition is created, because I can't find any fdisk-like command in HP UX. I just feel strange about it.

[datbtd]

hi g3jza

Thanks for the "idisk" command. I am trying it as below:

# idisk -w -f - /dev/rdsk/c1t2d0
idisk version: 1.44
********************** WARNING ***********************
If you continue you may destroy all data on this disk.
Do you wish to continue(yes/no)? yes

After I input "yes" and return, the process is hung, no any feedback .

After wait about 30 minutes, I can only press"CTRL+C" to force terminate it.

Would you please give an example on how to use this command? Thanks.

[g3jza]

By using the idisk, you can specify, what will be the size of the EFI partition, HPUX (OS) and optionally the HPSP (hp service partition-for diagnostic purposes) .

Steps to create the partitions:
How to create a new partition table on a new boot disk:
1. create a /tmp/idf file that describes the desired disk layout.

2. vi /tmp/idf

3
EFI 500MB
HPUX 100%
HPSP 400MB

(EFI System partition will be 500MB, HP service partition will be 400MB and the remaining space will be allocated to the HP-UX OS partition.)

3. idisk -wf /tmp/idf /dev/rdsk/c0t1d0 ( -w to write changes to disk, -f specifies the file with layout)
idisk also automatically creates EFI file systems in the system and HPSP partitions

4. 'mkboot -e -l /dev/rdsk/c0t1d0' copies hpux.efi and other EFI executables from /usr/lib/efi to the new system partition (-l if the disk will be configured using a volume manager such as LVM / VxVM ; -e for EFI disk layout)

[Dennis Handly]

>Would you please give an example on how to use this command?

You can look at your current root disk:

idisk  -p -a  /dev/rdsk/c1t0d0

[datbtd]

Hi g3jza,

Thanks a lot for your quickly reply!

Now it seems succeed. However, why through ioscan -m dsf, I can't find the partition? I did't execute the step4 , is it caused by it or need I reboot the server? Thanks again.

# idisk -wf /tmp/idf /dev/rdsk/c1t2d0
idisk version: 1.44
********************** WARNING ***********************
If you continue you may destroy all data on this disk.
Do you wish to continue(yes/no)? yes

EFI Primary Header:
        Signature                 = EFI PART
        Revision                  = 0x10000
        HeaderSize                = 0x5c
        HeaderCRC32               = 0x79634a70
        MyLbaLo                   = 0x1
        MyLbaHi                   = 0x0
        AlternateLbaLo            = 0x1117732f
        AlternateLbaHi            = 0x0
        FirstUsableLbaLo          = 0x40
        FirstUsableLbaHi          = 0x0
        LastUsableLbaLo           = 0x111772ff
        LastUsableLbaHi           = 0x0
        Disk GUID                 = 1037199e-a7b8-11e0-8000-d6217b60e588
        PartitionEntryLbaLo       = 0x2
        PartitionEntryLbaHi       = 0x0
        NumberOfPartitionEntries  = 0xc
        SizeOfPartitionEntry      = 0x80
        PartitionEntryArrayCRC32  = 0xde904e50

  Primary Partition Table (in 512 byte blocks):
    Partition 1 (EFI):
        Partition Type GUID       = c12a7328-f81f-11d2-ba4b-00a0c93ec93b
        Unique Partition GUID     = 10371bd8-a7b8-11e0-8000-d6217b60e588
        Starting Lba Lo            = 0x40
        Starting Lba Hi            = 0x0
        Ending Lba Lo              = 0xf9fff
        Ending Lba Hi              = 0x0
    Partition 2 (HP-UX):
        Partition Type GUID       = 75894c1e-3aeb-11d3-b7c1-7b03a0000000
        Unique Partition GUID     = 10371be2-a7b8-11e0-8000-d6217b60e588
        Starting Lba Lo            = 0xfa000
        Starting Lba Hi            = 0x0
        Ending Lba Lo              = 0x110af7ff
        Ending Lba Hi              = 0x0
    Partition 3 (HPSP):
        Partition Type GUID       = e2a1e728-32e3-11d6-a682-7b03a0000000
        Unique Partition GUID     = 10371bf6-a7b8-11e0-8000-d6217b60e588
        Starting Lba Lo            = 0x110af800
        Starting Lba Hi            = 0x0
        Ending Lba Lo              = 0x111772ff
        Ending Lba Hi              = 0x0

EFI Alternate Header:
        Signature                 = EFI PART
        Revision                  = 0x10000
        HeaderSize                = 0x5c
        HeaderCRC32               = 0x559e3b04
        MyLbaLo                   = 0x1117732f
        MyLbaHi                   = 0x0
        AlternateLbaLo            = 0x1
        AlternateLbaHi            = 0x0
        FirstUsableLbaLo          = 0x40
        FirstUsableLbaHi          = 0x0
        LastUsableLbaLo           = 0x111772ff
        LastUsableLbaHi           = 0x0
        Disk GUID                 = 1037199e-a7b8-11e0-8000-d6217b60e588
        PartitionEntryLbaLo       = 0x1117730f
        PartitionEntryLbaHi       = 0x0
        NumberOfPartitionEntries  = 0xc
        SizeOfPartitionEntry      = 0x80
        PartitionEntryArrayCRC32  = 0xde904e50

  Alternate Partition Table (in 512 byte blocks):
    Partition 1 (EFI):
        Partition Type GUID       = c12a7328-f81f-11d2-ba4b-00a0c93ec93b
        Unique Partition GUID     = 10371bd8-a7b8-11e0-8000-d6217b60e588
        Starting Lba Lo            = 0x40
        Starting Lba Hi            = 0x0
        Ending Lba Lo              = 0xf9fff
        Ending Lba Hi              = 0x0
    Partition 2 (HP-UX):
        Partition Type GUID       = 75894c1e-3aeb-11d3-b7c1-7b03a0000000
        Unique Partition GUID     = 10371be2-a7b8-11e0-8000-d6217b60e588
        Starting Lba Lo            = 0xfa000
        Starting Lba Hi            = 0x0
        Ending Lba Lo              = 0x110af7ff
        Ending Lba Hi              = 0x0
    Partition 3 (HPSP):
        Partition Type GUID       = e2a1e728-32e3-11d6-a682-7b03a0000000
        Unique Partition GUID     = 10371bf6-a7b8-11e0-8000-d6217b60e588
        Starting Lba Lo            = 0x110af800
        Starting Lba Hi            = 0x0
        Ending Lba Lo              = 0x111772ff
        Ending Lba Hi              = 0x0

Legacy MBR (MBR Signatures in little endian):
   MBR Signature = 0x44193710

Protective MBR

# ioscan -m dsf
Persistent DSF           Legacy DSF(s)
========================================
/dev/rdisk/disk2         /dev/rdsk/c2t1d0
/dev/rdisk/disk2_p1      /dev/rdsk/c2t1d0s1
/dev/rdisk/disk2_p2      /dev/rdsk/c2t1d0s2
/dev/rdisk/disk2_p3      /dev/rdsk/c2t1d0s3
/dev/rdisk/disk3         /dev/rdsk/c2t0d0
/dev/rtape/tape2_BEST    /dev/rmt/c0t4d0BEST
/dev/rtape/tape2_BESTn   /dev/rmt/c0t4d0BESTn
/dev/rtape/tape2_BESTb   /dev/rmt/c0t4d0BESTb
/dev/rtape/tape2_BESTnb   /dev/rmt/c0t4d0BESTnb
/dev/rdisk/disk5         /dev/rdsk/c3t0d0
/dev/rdisk/disk10        /dev/rdsk/c1t0d0
/dev/rdisk/disk11        /dev/rdsk/c1t2d0
/dev/rdisk/disk12        /dev/rdsk/c1t6d0
/dev/rdisk/disk13        /dev/rdsk/c1t4d0

I can't see the partition for /dev/rdisk/disk11. I expecte to see /dev/rdisk/disk11_p1/p2/p3 under this disk.

[g3jza]

So the /dev/rdsk/c1t2d0 maps to the agile /dev/rdisk/disk11 right?

To confirm:
#ioscan -m dsf /dev/rdsk/c1t2d0

Try running #ioscan -fnN
to see the new DSF's.

Step 4 should not be a problem since it should just copy some file/executables to the new partition, but your boot disk will not be bootable.

[g3jza]

To confirm:
#ioscan -m dsf /dev/rdsk/c1t2d0

--> forget about this, I'm just blind :)