topic Re: Getting HW path & LUN paths from /dev/dsk/c* in Operating System - HP-UX

Getting HW path & LUN paths from /dev/dsk/c*

ideep — Mon, 28 Jun 2010 09:46:39 GMT

I need to delete the HW path and LUN paths
associated with a device after deleting it. Is there any command with gives the lun & HW paths if we give the device as input(/dev/dsk/c*t*d*)?

Re: Getting HW path & LUN paths from /dev/dsk/c*

Vijaykumar_1 — Mon, 28 Jun 2010 10:27:48 GMT

If you have already removed the disk physically from the server and if the device file still exists, then you may need to run insf..

#insf -eC disk

This will recreate the device files and the device files for the removed disks will get removed.

In case of a an EMC symmetrix LUN, you will have to run powermt commands to remove the dead paths

The sequence will be as follows,

#powermt check
#powermt config
#powermt save
#powermt display

Re: Getting HW path & LUN paths from /dev/dsk/c*

Robert-Jan Goossens — Mon, 28 Jun 2010 10:29:47 GMT

# ioscan -fnCdisk

Re: Getting HW path & LUN paths from /dev/dsk/c*

ideep — Mon, 28 Jun 2010 10:51:40 GMT

i did
1.rmsf -a /dev/dsk/c5t2d2
2.insf -eC disk

but i still see NO_HW HW & lun paths

# ioscan -fkNC disk | grep NO_HW
disk 36 64000/0xfa00/0x67b esdisk NO_HW DEVICE NETAPP LUN
# ioscan -fkNC lunpath | grep NO_HW
lunpath 32 64000/0x2/0x0.0x0.0x4012000000000000 eslpt NO_HW LUN_PATH LUN path for disk36
# uname -a
HP-UX hpux197- B.11.31 U ia64 1205803419 unlimited-user license

Am i missing anything?

Re: Getting HW path & LUN paths from /dev/dsk/c*

SoorajCleris — Mon, 28 Jun 2010 10:53:02 GMT

Hi,

Which is your OS ?

#ioscan is the command which will give you device files and hardware mapping.

But
"I need to delete the HW path and LUN paths
associated with a device after deleting it.
"

==> what you mean by delete HW path???

Regards,
Sooraj

Re: Getting HW path & LUN paths from /dev/dsk/c*

ideep — Mon, 28 Jun 2010 10:56:11 GMT

an entry in ioscan o/p (eg 64000/0xfa00/0x67b ) which is listed under H/W path

# ioscan -fkNC disk
Class I H/W Path Driver S/W State H/W Type Description
===================================================================
disk 3 64000/0xfa00/0x0 esdisk CLAIMED DEVICE HP 73.4GMAX3073NC
disk 4 64000/0xfa00/0x1 esdisk CLAIMED DEVICE HP 73.4GMAX3073NC

Re: Getting HW path & LUN paths from /dev/dsk/c*

Matti_Kurkela — Mon, 28 Jun 2010 11:09:38 GMT

There is no need to list individual paths for deletion in 11.31.

Simply run "rmsf -x" to instantly delete all disk devices, HW paths and lunpaths whose disk is no longer available.

MK

Re: Getting HW path & LUN paths from /dev/dsk/c*

ideep — Mon, 28 Jun 2010 11:21:03 GMT

we are not able to get rid of NO_HW paths even after running the rmsf -x in HPUX 11iv3
# rmsf -x
rmsf: Removing stale entry at 255/0/1.0 for iscsial
rmsf: Removing stale entry at 255/0/2.0.0.0 for sdisk
rmsf: Removing stale entry at 255/0/2.0.0.3 for sdisk
rmsf: Removing stale entry at 255/0/2.0.0.6 for sdisk
rmsf: Removing stale entry at 64000/0x2/0x0.0x1 for estp
rmsf: Removing stale entry at 64000/0x2/0x0.0x2.0x4000000000000000 for eslpt
rmsf: Removing stale entry at 64000/0x2/0x0.0x2.0x4003000000000000 for eslpt
rmsf: Removing stale entry at 64000/0x2/0x0.0x2.0x4006000000000000 for eslpt
rmsf: Removing stale entry at 64000/0xfa00/0x672 for esdisk
rmsf: Removing stale entry at 64000/0xfa00/0x673 for esdisk
rmsf: Removing stale entry at 64000/0xfa00/0x676 for esdisk
Removing stale block DSF /dev/dsk/c6t0d0
Removing stale block DSF /dev/dsk/c6t0d2
Removing stale block DSF /dev/dsk/c6t0d3
Removing stale block DSF /dev/dsk/c6t0d4
Removing stale block DSF /dev/dsk/c6t0d5
Removing stale block DSF /dev/dsk/c6t0d6
Removing stale block DSF /dev/dsk/c6t0d7
Removing stale block DSF /dev/disk/disk27
Removing stale block DSF /dev/disk/disk22
Removing stale block DSF /dev/disk/disk28
Removing stale character DSF /dev/isw
Removing stale character DSF /dev/rdsk/c6t0d0
Removing stale character DSF /dev/rdsk/c6t0d2
Removing stale character DSF /dev/rdsk/c6t0d3
Removing stale character DSF /dev/rdsk/c6t0d4
Removing stale character DSF /dev/rdsk/c6t0d5
Removing stale character DSF /dev/rdsk/c6t0d6
Removing stale character DSF /dev/rdsk/c6t0d7
Removing stale character DSF /dev/rdisk/disk27
Removing stale character DSF /dev/rdisk/disk22
Removing stale character DSF /dev/rdisk/disk28
# ioscan -fkNC disk | grep NO_HW
disk 36 64000/0xfa00/0x67b esdisk NO_HW DEVICE NETAPP LUN
# ioscan -fkNC lunpath | grep NO_HW
lunpath 32 64000/0x2/0x0.0x0.0x4012000000000000 eslpt NO_HW LUN_PATH LUN path for disk36
#

Re: Getting HW path & LUN paths from /dev/dsk/c*

Torsten. — Mon, 28 Jun 2010 11:28:10 GMT

Did you try this?

# rmsf -k -H ...

Re: Getting HW path & LUN paths from /dev/dsk/c*

Vijaykumar_1 — Mon, 28 Jun 2010 11:28:59 GMT

-k option with ioscan invokes the device tree from the kernel. Try running without -k option

Re: Getting HW path & LUN paths from /dev/dsk/c*

ideep — Mon, 28 Jun 2010 11:33:39 GMT

rmsf -H is removing the HW and LUN paths. But the problem is i just want to remove the HW & lun paths for a specific device.
I am using a script to remove. That is why i need a way to find the HW & LUN paths for a specific device.

Re: Getting HW path & LUN paths from /dev/dsk/c*

Torsten. — Mon, 28 Jun 2010 11:36:14 GMT

But did you use

rmsf -k -H

or not?

Re: Getting HW path & LUN paths from /dev/dsk/c*

ideep — Mon, 28 Jun 2010 11:38:50 GMT

I greped for NO_HW in the following commands
and removed the stale entries with
rmsf -H

# ioscan -fkNC disk | grep NO_HW
# ioscan -fkNC lunpath | grep NO_HW

The problem is I am deleting all the stale
entries which are not related to my disk.
I want to remove the stale entries specific to my device only.

Re: Getting HW path & LUN paths from /dev/dsk/c*

SoorajCleris — Mon, 28 Jun 2010 11:56:59 GMT

Hi,

Could you please run ioscan with out "k" option and check the output? what is the current status

Regards,
Sooraj

Re: Getting HW path & LUN paths from /dev/dsk/c*

Torsten. — Mon, 28 Jun 2010 11:57:10 GMT

Still not sure where the problem is ...

Does this work for you?

# rmsf -k -H 64000/0x2/0x0.0x0.0x4012000000000000

Re: Getting HW path & LUN paths from /dev/dsk/c*

Torsten. — Mon, 28 Jun 2010 12:03:00 GMT

And by the way, when asking for the legacy device files (/dev/dsk/c*t*d*) you need to have a look at the legacy paths too:

# ioscan -fn

# ioscan -m dsf

Re: Getting HW path & LUN paths from /dev/dsk/c*

ideep — Wed, 30 Jun 2010 06:19:05 GMT

rmsf -H is removing the stale entries.

but my question is
"is there any command which will list the HW and lun path for a device?"
somthing like

#COMMAND device(/dev/dsk/c*t*d*)
#output : H/W path & lun path

So that i can only delete the stale entries associated with a particular device.

or some option with rmsf which cleans up HW and lun paths also while deleting the disk

Re: Getting HW path & LUN paths from /dev/dsk/c*

ideep — Wed, 30 Jun 2010 11:42:08 GMT

found the way.

#ioscan -m dsf | grep /dev/rdsk/c*t*d*
/dev/rdisk/disk /dev/rdsk/c*t*d*

# rmsf -av /dev/rdisk/disk

solved my problems.
Thanks for everyone who helped me.