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How to mirror between two SAN disk in HP-UX 11.31

 
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ranin_das
Advisor

How to mirror between two SAN disk in HP-UX 11.31

As per customer requirement , we need to mirror from existing SAN disk to new SAN disk.

We have presented one LUN from HPE MSA 2040, size 325GB and then installed OS here. Now OS is functioning. DBA team also installed their required tools here.  For mirror purpose , we have  present another LUN from seperate MSA 2040 with same size.  Customer wants to check OS is functining by mirror disk.

Mention that this is HPE SD-2  system and OS version is 11.31

So I need sugession from  expert end to do the task with details procedure CLi and also SMH GUI. 

Waiting for response as soon as possible.

 

 

16 REPLIES 16
Patrick Wallek
Honored Contributor

Re: How to mirror between two SAN disk in HP-UX 11.31

This is a good guide to mirror VG00 on an Itanium system.

 

https://kerneltalks.com/howto/root-disk-mirroring-in-itanium-hpux/

 

 

ranin_das
Advisor

Re: How to mirror between two SAN disk in HP-UX 11.31

Hi Patrick;

Thanks for your quick response with recommendations.  I will follow it and will share the output soon here.

Mention that here there is no server physical HDD. Both disk is presented from two different MSA storage.

ranin_das
Advisor

Re: How to mirror between two SAN disk in HP-UX 11.31

I have execute the required command for mirror between two SAN disk (MSA storage)

Please check the bellow command output after created mirror.   Here disk-4 is original and disk-14 is mirror disk.

bash-4.3# ioscan -m dsf

Persistent DSF Legacy DSF(s)
========================================
/dev/rdisk/disk4 /dev/rdsk/c6t0d0
/dev/rdsk/c4t0d0
/dev/rdisk/disk4_p1 /dev/rdsk/c6t0d0s1
/dev/rdsk/c4t0d0s1
/dev/rdisk/disk4_p2 /dev/rdsk/c6t0d0s2
/dev/rdsk/c4t0d0s2
/dev/rdisk/disk4_p3 /dev/rdsk/c6t0d0s3
/dev/rdsk/c4t0d0s3
/dev/rdisk/disk11 /dev/rdsk/c4t0d1
/dev/rdsk/c6t0d1
/dev/rdisk/disk14 /dev/rdsk/c5t0d0
/dev/rdsk/c7t0d0
/dev/rdisk/disk14_p1 /dev/rdsk/c7t0d0s1
/dev/rdisk/disk14_p2 /dev/rdsk/c7t0d0s2
/dev/rdisk/disk14_p3 /dev/rdsk/c7t0d0s3

bash-4.3# dmesg | grep -i "Boot device"
Boot device's HP-UX HW path is: 35/0/2/2/0/0/1.0x227000c0ff2585a5.0x0

bash-4.3# setboot
Primary bootpath : 35/0/2/2/0/0/1.0x227000c0ff2585a5.0x0 (/dev/rdisk/disk4)
HA Alternate bootpath : 33/0/1/0/0/0/0/2/0/0/1 (LAN Interface)
Alternate bootpath : 35/0/2/2/0/0/1.0x227000c0ff257a8a.0x0 (/dev/rdisk/disk14)

Autoboot is ON (enabled)
Hyperthreading : ON
: ON (next boot)

bash-4.3# cat /stand/bootconf
l /dev/disk/disk4_p2
l /dev/disk/disk14_p2

bash-4.3# vgdisplay -v vg00
--- Volume groups ---
VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 8
Open LV 8
Max PV 16
Cur PV 2
Act PV 2
Max PE per PV 2976
VGDA 4
PE Size (Mbytes) 64
Total PE 5932
Alloc PE 4864
Free PE 1068
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0
VG Version 1.0
VG Max Size 2976g
VG Max Extents 47616

--- Logical volumes ---
LV Name /dev/vg00/lvol1
LV Status available/syncd
LV Size (Mbytes) 10240
Current LE 160
Allocated PE 320
Used PV 2

LV Name /dev/vg00/lvol2
LV Status available/syncd
LV Size (Mbytes) 32768
Current LE 512
Allocated PE 1024
Used PV 2

LV Name /dev/vg00/lvol3
LV Status available/syncd
LV Size (Mbytes) 20480
Current LE 320
Allocated PE 640
Used PV 2

LV Name /dev/vg00/lvol4
LV Status available/syncd
LV Size (Mbytes) 20480
Current LE 320
Allocated PE 640
Used PV 2

LV Name /dev/vg00/lvol5
LV Status available/syncd
LV Size (Mbytes) 30720
Current LE 480
Allocated PE 960
Used PV 2

LV Name /dev/vg00/lvol6
LV Status available/syncd
LV Size (Mbytes) 10240
Current LE 160
Allocated PE 320
Used PV 2

LV Name /dev/vg00/lvol7
LV Status available/syncd
LV Size (Mbytes) 10240
Current LE 160
Allocated PE 320
Used PV 2

LV Name /dev/vg00/lvol8
LV Status available/stale
LV Size (Mbytes) 20480
Current LE 320
Allocated PE 640
Used PV 2


--- Physical volumes ---
PV Name /dev/disk/disk4_p2
PV Status available
Total PE 2966
Free PE 534
Autoswitch On
Proactive Polling On

PV Name /dev/disk/disk14_p2
PV Status available
Total PE 2966
Free PE 534
Autoswitch On
Proactive Polling On


bash-4.3# vgcfgrestore -n vg00 -l

Volume Group Configuration information in "/etc/lvmconf/vg00.conf"
VG Name /dev/vg00
---- Physical volumes : 2 ----
/dev/rdisk/disk4_p2 (Bootable)
/dev/rdisk/disk14_p2 (Bootable)

bash-4.3# lvlnboot -v
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/disk/disk4_p2 -- Boot Disk
/dev/disk/disk14_p2 -- Boot Disk
Boot: lvol1 on: /dev/disk/disk4_p2
/dev/disk/disk14_p2
Root: lvol3 on: /dev/disk/disk4_p2
/dev/disk/disk14_p2
Swap: lvol2 on: /dev/disk/disk4_p2
/dev/disk/disk14_p2
Dump: lvol2 on: /dev/disk/disk4_p2, 0

lvlnboot: Couldn't query physical volume "/dev/dsk/c0t0d1":
The specified path does not correspond to physical volume attached to
this volume group
bash-4.3#

 

Chekinfg steps after mirror :

1. Unpresent SAN disk (original OS disk) from  one MSA and then reboot. Select alternate disk  from boot manager during boot . Successfully OS is boot .

2. Finally again present SAN disk (original OS disk) from MSA and still 2nd disk from another MSA is presented.

Reboot the OS and then OS is booted from original OS automatically.

Issue face:

-->After unpresent original OS, when rebooting , it failed during autoboot from  primary disk and also from  alternate disk.

it works only when I select alternate path during booting from boot manager.

 

Please share opnion from HP-UX expert end how to solve the issue.

 

Torsten.
Acclaimed Contributor

Re: How to mirror between two SAN disk in HP-UX 11.31

Obviously you did not configure LVM quorum mode.

Hope this helps!
Regards
Torsten.

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ranin_das
Advisor

Re: How to mirror between two SAN disk in HP-UX 11.31

Please suggest how to configure LVM qourum mode with steps details...
ranin_das
Advisor

Re: How to mirror between two SAN disk in HP-UX 11.31

Hi all,

Have anyone solution for my previous queries ??
Torsten.
Acclaimed Contributor

Re: How to mirror between two SAN disk in HP-UX 11.31

Your HA alternate path points to LAN, better point to the mirror disk.

setboot -h /dev/rdisk/disk14

Regarding quorum mode:

 

echo "boot vmunix -lq"  > /tmp/AUTOfile

efi_cp -d /dev/rdisk/disk4_p1 /tmp/AUTOfile /EFI/HPUX/AUTO
efi_cp -d /dev/rdisk/disk14_p1 /tmp/AUTOfile /EFI/HPUX/AUTO

 

 


Hope this helps!
Regards
Torsten.

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those who understand binary, and those who don't.

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ranin_das
Advisor

Re: How to mirror between two SAN disk in HP-UX 11.31

Hi Torsten,

Thanks for your quick response.

Please check the bellow output.

Booting HP-UX Primary Boot: 35/0/2/2/0/0/1.0x227000c0ff2585a5.0x0
Boot Failed. HP-UX Primary Boot: 35/0/2/2/0/0/1.0x227000c0ff2585a5.0x0
Booting HP-UX HA Alternate Boot: 35/0/2/2/0/0/1.0x227000c0ff257a8a.0x0
Boot Failed. HP-UX HA Alternate Boot: 35/0/2/2/0/0/1.0x227000c0ff257a8a.0x0
Booting HP-UX Alternate Boot: 35/0/2/2/0/0/1.0x227000c0ff257a8a.0x0
Boot Failed. HP-UX Alternate Boot: 35/0/2/2/0/0/1.0x227000c0ff257a8a.0x0
Booting LAN [MAC(D8D385F8A152,0x0)/IPv4(0.0.0.0)]
Performing a non-directed lanboot...
Boot Failed. LAN [MAC(D8D385F8A152,0x0)/IPv4(0.0.0.0)]
Searching for devices.
Copyright (c) 2000-2012 Broadcom Corporation
Broadcom NetXtreme II 10 Gig Ethernet EFI driver v5.2.60


bash-4.3# setboot
Primary bootpath : 35/0/2/2/0/0/1.0x227000c0ff2585a5.0x0 (/dev/rdisk/disk4)
HA Alternate bootpath : 35/0/2/2/0/0/1.0x227000c0ff257a8a.0x0 (/dev/rdisk/disk14)
Alternate bootpath : 35/0/2/2/0/0/1.0x227000c0ff257a8a.0x0 (/dev/rdisk/disk14)

Autoboot is ON (enabled)
Hyperthreading : ON
: ON (next boot)

bash-4.3# echo "boot vmunix -lq" > /tmp/AUTOFILE
bash-4.3# efi_cp -d /dev/rdisk/disk4_p1 /tmp/AUTOFILE /EFI/HPUX/AUTO
bash-4.3# efi_cp -d /dev/rdisk/disk14_p1 /tmp/AUTOFILE /EFI/HPUX/AUTO

HP-UX Boot Loader for IPF -- Revision 2.047

Press Any Key to interrupt Autoboot
\EFI\HPUX\AUTO ==> boot vmunix-lq
Seconds left till autoboot - 0
AUTOBOOTING...Could not open file vmunix-lq to check for a directory
Could not open vmunix-lq

loading failed

HPUX>

 

Steps done:

1.set the second disk as HA boot path as per your recommendation but same result (OS booting failed.)

2. run command provided from you. (at this time both disk is presented)

bash-4.3# echo "boot vmunix -lq" > /tmp/AUTOFILE
bash-4.3# efi_cp -d /dev/rdisk/disk4_p1 /tmp/AUTOFILE /EFI/HPUX/AUTO
bash-4.3# efi_cp -d /dev/rdisk/disk14_p1 /tmp/AUTOFILE /EFI/HPUX/AUTO

3. Reboot OS  but OS  booting is failed from primary disk  and also from alternate disk. (Both disk is present)

Error shown for both disk as above.

Please suggest  how to overcome this. We need to boot oS from primary disk again. Then we will check again for mirror.

Torsten.
Acclaimed Contributor

Re: How to mirror between two SAN disk in HP-UX 11.31


@ranin_das wrote:

 

Press Any Key to interrupt Autoboot
\EFI\HPUX\AUTO ==> boot vmunix-lq
Seconds left till autoboot - 0
AUTOBOOTING...Could not open file vmunix-lq to check for a directory
Could not open vmunix-lq

loading failed

 

There is a space missing:

boot vmunix-lq

boot vmunix <SPACE> -lq


Hope this helps!
Regards
Torsten.

__________________________________________________
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those who understand binary, and those who don't.

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