Problem whit disk /HBA

[Eli Daniel]

Good morning

I wanted to share with you this question:

In the server HP-UX 11.31 ia64, assign 10 disk via SYMMETRIX (SAM)

The run command ioscan -fnC see 40 disk via SYMETRIX.

The personal EMC assign only 10 disk:
Device Cap(MB) Attr Dir:P
------ ------- ---- ----
205F 153601 (M) 8B:1, 9B:1
2065 153601 (M) 8B:1, 9B:1
206B 153601 (M) 8B:1, 9B:1
2071 153601 (M) 8B:1, 9B:1
2077 153601 (M) 8B:1, 9B:1
207D 153601 (M) 8B:1, 9B:1
2083 153601 (M) 8B:1, 9B:1
2089 153601 (M) 8B:1, 9B:1
2810 153601 (M) 8B:1, 9B:1
2863 153601 (M) 8B:1, 9B:1

The server is installed 4 HBA
sinfra905:/>ioscan -fnCfc
Class I H/W Path Driver S/W State H/W Type Description
=====================================================================
fc 0 0/0/0/5/0/0/0 fcd CLAIMED INTERFACE HP 451871-B21 8Gb Dual Port PCIe Fibre Channel Mezzanine (FC Port 1)
/dev/fcd0
fc 1 0/0/0/5/0/0/1 fcd CLAIMED INTERFACE HP 451871-B21 8Gb Dual Port PCIe Fibre Channel Mezzanine (FC Port 2)
/dev/fcd1
fc 2 1/0/0/5/0/0/0 fcd CLAIMED INTERFACE HP 451871-B21 8Gb Dual Port PCIe Fibre Channel Mezzanine (FC Port 1)
/dev/fcd2
fc 3 1/0/0/5/0/0/1 fcd CLAIMED INTERFACE HP 451871-B21 8Gb Dual Port PCIe Fibre Channel Mezzanine (FC Port 2)
/dev/fcd3

The question is:
how to distinguish or view only the 10 disk??

Because there are more than 10 disk in the server??


Anex ioscan

[Torsten.]

Use

# ioscan -m dsf

or

# ioscan -fN

[Zinky · Accepted solution]

You're not using PowerPath right?

Symmetrix should be supported in 11.31's mass storage stack/native multipathing. Are you familiar with persistent dsf or agile device naming?

ioscan -m dsf

will show the agile (multipathed) /dev/rdisk/diskNNN and the legacy device paths /dev/rdsk/cXtYdZ (aka subpaths).

If you have the SCSI Inquire EMC tool it will also help.

[Eli Daniel]

Hi Torste, anex the ioscan

[Eli Daniel]

No, the version Power path have conflict whit HP-UX 11.31.
The load balancing should used for Operation System. 11.31 have Multipathing.

I need view the disk real.

how can view only 10 disk???

[Vivek Bhatia]

Hi,

Please find the commands below to find out the disks.

# ioscan -m dsf
# ioscan -fN

#powermt display dev=all

#/usr/local/bin/inq -clariion

You can run scsimgr to verify the

[root@totoro] / # scsimgr get_attr -D /dev/rdisk/disk30 -a serial_number

SCSI ATTRIBUTES FOR LUN : /dev/rdisk/disk30

name = serial_number
current = "100123CED000"
default =
saved =

"100123CED000" -Last three digits are the LUN ID included in the serial number.

This will help you to cross verify the the information on two disks.As this might be a bug if you have not mapped more than 10 disks to the server.

The output given by you show disks far more than 10 disks.

Thanks
Vivek Bhatia

[Zinky]

What kind of EMC Symmterix is this?

Your ioscan -m dsf output does not seem to show that your agile/dsf devices are multipathed at all.


Do you Have EMC's SCSI inquire utility sir?

The binary is usually called inq or inquire

[Eli Daniel]

Generic Status Information

SCSI services internal state = UNOPEN
Device type = Direct_Access
EVPD page 0x83 description code = 0
EVPD page 0x83 description association = 0
EVPD page 0x83 description type = 0
World Wide Identifier (WWID) = N/A
Serial number = "101770!"H000"
Vendor id = "EMC "
Product id = "SYMMETRIX "
Product revision = "5772"
Other properties = ""
SPC protocol revision = 2
Open count (includes chr/blk/pass-thru/class) = 0
Raw open count (includes class/pass-thru) = 0
Pass-thru opens = 0
LUN path count = 1
Active LUN paths = 1
Standby LUN paths = 0
Failed LUN paths = 0
Maximum I/O size allowed = 2097152
Preferred I/O size = 2097152
Outstanding I/Os = 0
I/O load balance policy = round_robin
Path fail threshold time period = 0
Transient time period = 120
Tracing buffer size = 1024
LUN Path used when policy is path_lockdown = NA
LUN access type = NA
Asymmetric logical unit access supported = No
Asymmetric states supported = NA
Preferred paths reported by device = No
Preferred LUN paths = 0

[Vivek Bhatia]

What output is this?

[Eli Daniel]

the out is:

STATUS INFORMATION FOR LUN : /dev/rdisk/disk52

[Zinky]

Isn't the EMC Symmetrix 5000 Series a VERY OLD array? And from the looks of the support matrix here http://www.hp.com/products1/serverconnectivity/mass_storage_devices.html#EMCiSCSI - it does not seem 11.31 supports it.


That is whty your info on the disk in scsimgr does not show multipaths sir...

Now I don't know if you can still safely use the legacy devices and just use PVLINKs. It may work -- but likely unsupported.

[Zinky]

Here is EXAMPLE of a correctly multipathed disk (In this case an HP XP24K LUN presenetd on 4 CHAs/FC-Paths:

ioscan -m dsf:

/dev/rdisk/disk28 /dev/rdsk/c78t0d0
/dev/rdsk/c82t0d0
/dev/rdsk/c84t0d0
/dev/rdsk/c80t0d0



scsimgr Device Info:

root@fhprod12 # scsimgr get_info -D /dev/rdisk/disk28|more

STATUS INFORMATION FOR LUN : /dev/rdisk/disk28

Generic Status Information

SCSI services internal state = ONLINE
Device type = Direct_Access
EVPD page 0x83 description code = 1
EVPD page 0x83 description association = 0
EVPD page 0x83 description type = 3
World Wide Identifier (WWID) = 0x60060e8004753f000000753f0000001e
Serial number = "30015 "
Vendor id = "HP "
Product id = "OPEN-V-CM "
Product revision = "5001"
Other properties = ""
SPC protocol revision = 2
Open count (includes chr/blk/pass-thru/class) = 28
Raw open count (includes class/pass-thru) = 28
Pass-thru opens = 0
LUN path count = 4
Active LUN paths = 4
Standby LUN paths = 0
Failed LUN paths = 0
Maximum I/O size allowed = 2097152
Preferred I/O size = 2097152
Outstanding I/Os = 0
I/O load balance policy = round_robin
Path fail threshold time period = 0
Transient time period = 120
Tracing buffer size = 1024
LUN Path used when policy is path_lockdown = NA
LUN access type = NA
Asymmetric logical unit access supported = No
Asymmetric states supported = NA
Preferred paths reported by device = No
Preferred LUN paths = 0


Note LUN Path counts...

[Torsten.]

You should only use the native multipathing, no powerpath. IMHO this is the reason for trouble here.

[Eli Daniel]

Hi torsten, exactly

i need used ative multipathing, but I think so no compatiblity the EMC Symetrix whit Opeartion System.

I dont can install powerpath. HP-UX 11.31 and version power path have problem, the server crash constantly.

[Eli Daniel]

Anex information for EMC administrator

Symmetrix ID : 000290101770

Database Type : Type6
Last updated at : 04:03:17 PM on Wed Jan 12,2011

Director Identification : FA-8B
Director Port : 1

Originator Port wwn : 50014380072b6e38
Type : Fibre
User-generated Name : sinfra411/hba1
Visibility : No
FCID Lockdown : No
Lun Offset : No
Heterogeneous Host : No
Port Flag Overrides : Yes
Enabled : SPC2_Protocol_Version(SPC2)
Disabled : N/A
Dynamic Addressing : No
Authentication State : N/A
Devices : 205F 2065 206B 2071 2077 207D 2083 2089
2810 2863

[Eli Daniel]

How to see Device:
205F 2065 206B 2071 2077 207D 2083 2089
2810 2863

Whit HP-UX 11.31 dont no show these parameters??

[Zinky]

See my last 2 posts.

Your EMC does not appear to be recognised, multipathed by 11.31's mass storage stack. Yor disk info shows it clearly... if it did - it should show 4 paths. And it is not

Bottom line.. you likely HAVE an old Symmetrix 5000 series that IS not supported by 11.31's multipathing routines....

[Eli Daniel]

Thanks Alzhy, the information exist in link??

where can find information?? (www.docs.hp.com)

[Zinky]

http://www.hp.com/products1/serverconnectivity/mass_storage_devices.html#EMCiSCSI

Ask your EMC person. Is the array an old 5000 Series!

If it is -- then it is likely UNSUPPORTED in 11.31


You can still however try using it - via PVLINKS but DO test if PVLINKS work.

[Eli Daniel]

The hardware is:

Blade870C i2
HP-UX 11.31 ia64bits

SYSREV

Revisions Active Pending Bay 7 Bay 8
---------------------------------------------------------
iLO FW : 01.01.02 01.01.02 01.01.02
System FW : 01.08 01.08 01.08
MHW FPGA : 01.12 01.12 01.12
Power Mon FW : 03.04 03.04 03.04
Front Panel HW : 04.00 04.00 04.00
PRS HW : 02.07 02.07 02.07
IOH HW : 02.02 02.02 02.02

[Eli Daniel]

Alzhy, i dont understand:

"You can still however try using it - via PVLINKS but DO test if PVLINKS work."

[Zinky]

Not asking the flavour of your HP-UX Operation Environment 11.31 sir.

Ask your EMC/SAN person:

Is the array an old 5000 Series!

Coz if IT IS -- then it is NOT FULLY supported under HP-UX 11.31

[Zinky]

"You can still however try using it - via PVLINKS but DO test if PVLINKS work."

You are able to find out what are the cXtYdZ for each of the EMC LUN right?

Then do legacy devices in LVM sir.

[Eli Daniel]

Alzhy, yes i see LUN whit legacy DSF


example:
sinfra905:/>diskinfo /dev/rdsk/c9t10d0
SCSI describe of /dev/rdsk/c9t10d0:
vendor: EMC
product id: SYMMETRIX
type: direct access
size: 157288320 Kbytes
bytes per sector: 512

[Zinky]

AND you know what to do -- right?