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LVM disk not shown

 
aamir4u
Regular Advisor

LVM disk not shown

hello,

 

I have hp san 4400 and i created
 two vdisk one is 200 gb and another is 230 gb this vdisk in PRESENTED connected on hp ux server(UATDATA1)

This disks shown on hp ux like
/dev/dsk/c2t1d0 and
/dev/dsk/c2d1d3
so i created the lvm via SMH like
/dev/x01/vgx01 mounted on /x01  and
/dev/s01/vgs01 mounted on /s01
 
its all right and working fine

 

BUT MY DBA(user)TOLD ME DELETE THE  DISK AND CREATE LARGE space DISK

SO I DELETED LVM on hp-ux(uatdata1)  AND SAN VDISK
 
AGAIN I CREATED TWO VDISK
ONE IS 300 GB AND 0NE IS 400 GB
ITS connected on (uatadata1)

BUT WHEN I RUN COMMAND
IOSCAN -M DSF
ITS SHOWS OLDER disk
/dev/dsk/c2t1d0 and
/dev/dsk/c2d1d3

AND RUN ANOTHER COMAND

DISKINFO /DEV/DSK/C2T1D0
ITS SHOWS NOTHING on both disk


AND run  SMH
THERE ALSO SHOWN DISK 0 GB SPACE

Why my new disk not shown and
 why its shown 0% disk space on that particular disks

why its shown older deleted disk path and not seem new disk path.

 

 

i awaiting of your precious answer.

 

Thanks

Thanks
aamir uddin
7 REPLIES 7
Torsten.
Acclaimed Contributor

Re: LVM disk not shown

Running 11.31?

If you delete a LUN and present another new LUN with same LUN number the server prevents access for security reasons, unless you use scsimgr with replace_wwid option (see scsimgr white paper) or a reboot of the server.

Hope this helps!
Regards
Torsten.

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aamir4u
Regular Advisor

Re: LVM disk not shown

if  it is possible

without restart the server and re create the vdisk  different lun on SAN . 

 

if it is .how can we that.

 

 

Thanks

Thanks
aamir uddin
aamir4u
Regular Advisor

Re: LVM disk not shown

Hi,

 

i am awaiting of your precious reply.

 

 

 

thanks

Thanks
aamir uddin
pradeep m
Respected Contributor

Re: LVM disk not shown

You can delete the old disk devices / hardware address to clear it from ioscan output. 

 

Run the below command to rescan and make the new disk visible.

 

# ioscan -fnNC disk 

# insf -e (reinstall missing / new device files)

# ioscan -m dsf -> check if the new luns are seen. it might not be have the same device name as the older one. 

Regards,
Pradeep

I am an HP Employee
A quick resolution to technical issues for your HP Enterprise products is just a click away HP Support Center Knowledge-base
See Self Help Post for more details


Torsten.
Acclaimed Contributor

Re: LVM disk not shown

For 11.31 this is not enough.

 

 

Get this:

 

http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01914672/c01914672.pdf 

 

see page 29


Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

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aamir4u
Regular Advisor

Re: LVM disk not shown

Hi,

 

After restarting the server disk are present

and diskinfo also shown the size of disk

 

but

on smh no unused disk visible.

 

on smh disk are not visible why?

 

please help me.

Thanks
aamir uddin
Highlighted
Torsten.
Acclaimed Contributor

Re: LVM disk not shown

I assume the new LUN has the same device files like the old LUN had - did you remove everything from the old LUN before removing?

(VG definitions, etc)

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!