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