From: balaji (balaji@temple.edu)
Date: Wed Jul 03 2002 - 11:00:27 EDT
Hello managers
Sorry for this delayed reply. Following is the summary
I would like to thank for there replies.(Attached)
LHERCAUD@bouyguestelecom.fr
Binkley Robert
alan@nabeth.cxo.cpqcorp.net
==============================================================================
====
The new UNITs you will create will keep the data but will be "seen" as
differents disks by the OS.
Depending on the OS version (4.0* or 5.1*), this will have to be done in
different manners
Lucien HERCAUD
Consultant Systeme UNIX en mission chez Bouygues T‚l‚com
DCSI/DEB/HSI/INL/INX
* Tel. Fixe +33 1 3945 4260 * BOUYGUES Telecom
* Tel. Mobile +33 6 0944 2880 * 24 Avenue de l'Europe
* Fax +33 1 3945 4322 * 78944 VELIZY Cedex
* lhercaud@bouyguestelecom.fr
==============================================================================
=======
Robert BInkley
This is the procedures for moving a raidset/unit from being online with one
HSG80 to the other.
NOTE: It is recommended that you try to quiesce the application if at all
possible.
STEP 1: This is what you are wanting to change. The State shows it
"ONLINE
to this controller" but the PREFERRED_PATH = OTHER_CONTROLLER. For load
balancing purposes across the HSG80 Pair this unit d2 really needs to be
"ONLINE to the other controller" to match the PREFERRED_PATH.
HSG8013T> sho d2
LUN Uses Used by
----------------------------------------------------------------------
D2 R2
LUN ID: 6000-1FE1-000F-E2D0-0009-1050-6837-00BB
IDENTIFIER = 132
Switches:
RUN NOWRITE_PROTECT READ_CACHE
READAHEAD_CACHE WRITEBACK_CACHE
MAX_READ_CACHED_TRANSFER_SIZE = 256
MAX_WRITE_CACHED_TRANSFER_SIZE = 256
Access:
ALL
State:
ONLINE to this controller
Not reserved
PREFERRED_PATH = OTHER_CONTROLLER
Size: 355486275 blocks
Geometry (C/H/S): ( 69978 / 20 / 254 )
STEP 2: Get the serial numbers of the HSG8013T dual redundant controllers.
HSG8013T> sho this
Controller:
HSG8013T ZG94213577 Software V85F-0, Hardware E05
NODE_ID = 5000-1FE1-0005-FAF0
HSG8013T> sho other
Controller:
HSG8013T ZG03408473 Software V85F-0, Hardware E05
NODE_ID = 5000-1FE1-0005-FAF0
Step 3: For each unit/device that will need to be moved from one HSG80 to
the other we need to get the BUS, TARGET, and LUN of each VALID path using
hwmgr. Grepping for the IDENTIFIER from Step 1, enter the following
command.
HOSTNAME:/=> hwmgr -v d -cate disks | grep 132
562: /dev/disk/dsk132c DEC HSG80 IDENTIFIER=132
Step 4: Now using the HWID that was obtained from the last command enter
this command. This will give you the First and every Valid Path.
HOSTNAME:/=> hwmgr -show scsi -ful -id 562
SCSI DEVICE DEVICE DRIVER NUM DEVICE FIRST
HWID: DEVICEID HOSTNAME TYPE SUBTYPE OWNER PATH FILE VALID
PATH
----------------------------------------------------------------------
562: 115 samson disk none 2 32 dsk132 [6/8/2]
WWID:01000010:6000-1fe1-000f-e2d0-0009-1050-6837-00bb
BUS TARGET LUN PATH STATE
------------------------------
6 8 2 valid
6 9 2 valid
8 8 2 valid
8 9 2 valid
13 8 2 valid
13 9 2 valid
15 8 2 valid
15 9 2 valid
21 8 2 valid
21 9 2 valid
23 8 2 valid
23 9 2 valid
27 8 2 valid
27 9 2 valid
29 8 2 valid
29 9 2 valid
35 16 2 valid
35 17 2 valid
37 16 2 valid
37 17 2 valid
41 16 2 valid
41 17 2 valid
43 16 2 valid
43 17 2 valid
49 16 2 valid
49 17 2 valid
51 16 2 valid
51 17 2 valid
55 16 2 valid
55 17 2 valid
57 16 2 valid
57 17 2 valid
Step 5: Then run scu and specify the nexus of the first BUS, TARGET and
LUN
that was obtained from hwmgr for the unit/device that will be moved.
HOSTNAME:/=> scu
scu> set nexus bus 6 target 8 lun 2
Device: HSG80, Bus: 6, Target: 8, Lun: 2, Type: Direct Access
- OR - (you can use this other command, which means "set bus target lun")
scu> sbtl 6 8 2
Device: HSG80, Bus: 6, Target: 8, Lun: 2, Type: Direct Access
Step 6: Issue a show inquiry command from scu.
- On the second screen of output from the inquiry reply there will be two
serial numbers listed in the hex data. The first serial number is the
serial number of the controller you are talking to. If this is the SAME
serial number that the unit is currently online to, you need to issue the
scu> set nexus command to the NEXT BUS, TARGET, and LUN from the hwmgr
display for that disk. Then do the scu> show inquiry again until the
first
serial number is the controller you want the unit/device to be online.
The
other key here is that when the first serial number is the controller you
want the device to be online with, the Peripheral Qualifier below will say
(Peripheral Device NOT Connected).
scu> sho inq
Inquiry Information:
Peripheral Device Type: 0 (Direct Access)
Peripheral Qualifier: 0 (Peripheral Device Connected)
Device Type Modifier: 0
Removable Media: No
ANSI Version: 2 (Complies to ANSI X3.131-1994,
SCSI-2)
ECMA Version: 0
ISO Version: 0
Response Data Format: 2 (SCSI-2)
Terminate I/O Process: No
Additional Length: 247
Soft Reset Support: No
Command Queuing Support: Yes
Target Transfer Disable: No
Linked Command Support: No
Synchronous Data Transfers: Yes
Support for 16 Bit Transfers: Yes
Support for 32 Bit Transfers: No
Relative Addressing Support: No
Vendor Identification: DEC
Product Identification: HSG80
Firmware Revision Level: V86F
Vendor Specific Data: 5a 47 30 33 34 30 38 34 37 33 5a
"ZG03408473" This is
the controller that the disk is
currently on. Need to select the next BUS,TARGET
and LUN using scu>.
47 39 34 32 31 33 35 37 37 00 00
"ZG94213577"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 70 94 00 00 00 00 "
p
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 50 00 1f e1 00 "
P "
0f e2 d0 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 01 01 00 00 00 "
"
00 00 00 00 00 00 00 "
"
scu> sbtl 8 8 2
Device: HSG80, Bus: 8, Target: 8, Lun: 2, Type: Direct Access
scu> sho inq
Inquiry Information:
Peripheral Device Type: 0 (Direct Access)
Peripheral Qualifier: 0x1 (Peripheral Device NOT Connected)
Device Type Modifier: 0
Removable Media: No
ANSI Version: 2 (Complies to ANSI X3.131-1994,
SCSI-2)
ECMA Version: 0
ISO Version: 0
Response Data Format: 2 (SCSI-2)
Terminate I/O Process: No
Additional Length: 247
Soft Reset Support: No
Command Queuing Support: Yes
Target Transfer Disable: No
Linked Command Support: No
Synchronous Data Transfers: Yes
Support for 16 Bit Transfers: Yes
Support for 32 Bit Transfers: No
Relative Addressing Support: No
Vendor Identification: DEC
Product Identification: HSG80
Firmware Revision Level: V86F
Vendor Specific Data: 5a 47 30 33 34 30 38 34 37 33 5a
"ZG94213577" This is the controller that you want
The unit/device to be online.
47 39 34 32 31 33 35 37 37 00 00
"ZG03408473"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 70 94 00 00 00 00 "
p
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 50 00 1f e1 00 "
P "
0f e2 d0 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 00 00 00 00 00 "
"
00 00 00 00 00 00 01 01 00 00 00 "
"
00 00 00 00 00 00 00 "
"
Step 7: The next thing to do will be to issue a start to bring the
unit/device online with the controller which you have specified. You're
finished, so now quit scu.
scu> start
scu> quit
Step 8: Check the device on the HSG8013T to verify that the device has
moved.
HSG8013T> sho d2
LUN Uses Used by
----------------------------------------------------------------------
D2 R2
LUN ID: 6000-1FE1-000F-E2D0-0009-1050-6837-00BB
IDENTIFIER = 132
Switches:
RUN NOWRITE_PROTECT READ_CACHE
READAHEAD_CACHE WRITEBACK_CACHE
MAX_READ_CACHED_TRANSFER_SIZE = 256
MAX_WRITE_CACHED_TRANSFER_SIZE = 256
Access:
ALL
State:
ONLINE to the other controller
Not reserved
PREFERRED_PATH = OTHER_CONTROLLER
Size: 355486275 blocks
Geometry (C/H/S): ( 69978 / 20 / 254 )
==============================================================================
=======
==============================================================================
============
Alan Nabeth
Deconstruct the logical units on the source HSG:
DELETE unit-name
DELETE storage-set-name
DELETE device-name ...
Move the disks and reconstruct the units on the target
HSG:
ADD DISK ...
...
ADD MIRROR ...
ADD UNIT ...
Be sure to skip the INIT step, since that WILL cause the
data on those disks to disappear.
TRANSPORTABLE is a characteristic supported by the HS
family operating system that doesn't allocate space
on the disk for the operating system's metadata. The
intent is to allow disks to be used on the HS family
subsystem and then moved to a non-HS family subsystem
such as a bare SCSI adapter.
The HS family allocates some part of the space of a device
for its metadata. This is used to keep track of bad blocks,
so that it can replace the block, but remember that the data
in that block was wrong. It also allows the feature of taking
a bare disk, and turning it into a member of a mirror set.
The data has lots of uses, but takes away some of the capacity
that would be presented to the host. TRANSPORTABLE doesn't
allocate this space, with the attendent loss of features.
==============================================================================
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