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Provissioning storage
1. Storage Allocation
On Symmetrix Systems
LUNs creation, mapping, LUN masking, etc
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
2. Assessing host (hpux)
#bdf | grep –i arc (gets info from file system needed to be enlarged)
/dev/vg63/lvol1 196608000 9507968 185641832 5% /f11iprodARCHIVE
/f11iprodARCHIVE
# emc | grep vg63 (lists info of the volume group)
c38t0d6 096 50 vg63 (M)3 de 16,96 (16.96 x 3=50.88)
3=50.88)
c38t0d7 099 50 vg63 (M)3 de 16,96 1 Path
c38t1d5 0AB 50 vg63 (M)3 de 16,96
c38t2d1 0B7 50 vg63 (M)3 de 16,96
c59t6d3 096 50 vg63 (M)3 de 16,96 (16.96 x 3=50.88)
3=50.88)
c59t6d4 099 50 vg63 (M)3 de 16,96
c59t7d2 0AB 50 vg63 (M)3 de 16,96 2 Path
c59t7d6 0B7 50 vg63 (M)3 de 16,96
#symdev -sid 1098 show 045 | more (provides info of device 045)
This is the data to validate against control center, for DMX3 “1098” box, In the following steps.
1098”
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
3. Search for devices.
Click on “Find” tab and in the search
box, type the string (LUN in this case)
you are looking for.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
4. Selecting Hyper.
Select hyper, click properties and check all the
parameters before and after assignment.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
5. Selecting Meta devices.
Once found the “LUN” (it mostly will be a Hyper, as
we are talking in Symmetrix language), we will be able
to view its contents.
In this particular case, we are loking at a Meta, with 3
Hypers: One is the Meta head, the other two are meta
devices. Note the M, as Meta head is marked with (M)
and accompanied with the number of meta devices in
it.
Also, have in mind that Hypers are normally of two
sizes (per standardization) 16.96 and 56.9966
Gygabytes.
On the right hand, we can see the LUN properties.
Listed is the Meta head, ID 087, 16.96GB, allocated,
and within its total Meta device size, 50.87 (3 LUNS in
total).
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
6. Meta Devices (cont.)
Here the example is repeated, but
with more LUNS or Hypers. Here
we can see Meta head 5F4, with its 7
devices attached to it, making it a
(M)7 of 135.64Gb total.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
7. Create meta devices from CLI.
# symconfigure -sid 1098 -f makemetas commit
Execute a symconfigure operation for symmetrix '1098' (y/[n]) ? y
(y/[n])
A Configuration Change operation is in progress. Please wait...
Establishing a configuration change session...............Established.
session...............Established.
Processing symmetrix xxxxxxxx01098
Performing Access checks..................................Allowed.
checks..................................Allowed.
Checking Device Reservations..............................Allowed.
Reservations..............................Allowed.
• “makemetas” Configuration File: Submitting configuration changes..........................Submitted
changes..........................Submitted
Locking devices...........................................Locked.
devices...........................................Locked.
Validating configuration changes..........................Validated.
changes..........................Validated.
Initiating PREPARE of configuration changes...............Queued.
changes...............Queued.
# cat mekametas PREPARE requesting required resources.....................Obtained.
resources.....................Obtained.
form meta from dev 10E8 config=Striped;
config=Striped; Local: PREPARE...........................................Done.
PREPARE...........................................Done.
Initiating COMMIT of configuration changes................Queued.
changes................Queued.
add dev 10E9 to meta 10E8; COMMIT requesting required resources...................... Obtained. Obtained.
add dev 110E to meta 10E8; Step 018 of 120 steps.....................................Executing.
steps.....................................Executing.
Step 023 of 120 steps.....................................Executing.
steps.....................................Executing.
form meta from dev 111A config=Striped;
config=Striped; Step 023 of 120 steps.....................................Executing.
steps.....................................Executing.
add dev 111B to meta 111A; Step 023 of 120 steps.....................................Executing.
steps.....................................Executing.
Step 023 of 120 steps.....................................Executing.
steps.....................................Executing.
add dev 111C to meta 111A; Step 048 of 120 steps.....................................Executing.
steps.....................................Executing.
form meta from dev 111D config=Striped;
config=Striped; Step 049 of 120 steps.....................................Executing.
steps.....................................Executing.
Step 063 of 154 steps.....................................Executing.
steps.....................................Executing.
add dev 111E to meta 111D; Step 071 of 154 steps.....................................Executing.
steps.....................................Executing.
add dev 111F to meta 111D; Step 071 of 154 steps.....................................Executing.
steps.....................................Executing.
Step 081 of 154 steps.....................................Executing.
steps.....................................Executing.
form meta from dev F3B config=Striped;
config=Striped; Step 095 of 154 steps.....................................Executing.
steps.....................................Executing.
add dev F3C to meta F3B; Step 097 of 154 steps.....................................Executing.
steps.....................................Executing.
Step 102 of 154 steps.....................................Executing.
steps.....................................Executing.
add dev F3D to meta F3B; Step 103 of 154 steps.....................................Executing.
steps.....................................Executing.
Step 103 of 154 steps.....................................Executing.
steps.....................................Executing.
Step 104 of 154 steps.....................................Executing.
steps.....................................Executing.
Step 104 of 154 steps.....................................Executing.
steps.....................................Executing.
Step 105 of 154 steps.....................................Executing.
steps.....................................Executing.
Step 106 of 154 steps.....................................Executing.
steps.....................................Executing.
Step 106 of 154 steps.....................................Executing.
steps.....................................Executing.
Step 111 of 154 steps.....................................Executing.
steps.....................................Executing.
Local: COMMIT............................................Done.
COMMIT............................................Done.
Terminating the configuration change session..............Done.
session..............Done.
The configuration change session has successfully completed.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
8. LUN
To see the diference, we have listed a LUN here. You can appreciate that LUN B4A, has 5.62GB
Size, and summarizes with the other LUNS, 11.24GB.
LUNs are not the common standard for Symmetrix, as they do not use the disk completely as
Hypers.
Hypers use the cylinders of the disks, using even the lastest cylinder of the disks, avoiding to leave
MBs in disuse as is usual in LUNs. That is why the 16.96 and 59.9966 sizes are so intrincanted.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
9. Selecting new Hypers to be allocated
In this spreadsheet we have the free
/ unmapped Hypers, filtered by size,
device, etc.
Documentation is always a must, as
it will guide us for future
configurations, as for systems
recovery.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
10. Mapping Devices.
Select Hyper “729”, right click, go to configure and SDR Device
Mapping.
SDR Stands for “Symmetrix Data “
If you need to add more than one disk, select the disks with “ctrl” key
and follow the same steps.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
11. Selecting host ports.
Hosts
In this case, ports 8C:1 &
9C:0, are the last octets from
BACKUPSRV HBA ports.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
12. Mapping devices (cont.)
Select the device on the left and the HBA ports on
the right. Hold control to select more than one.
Alert messages will be displayed for each of the
HBAs to which we are adding the device (hyper).
To check availability of addresses into this ports, run:
symcfg list -sid 1098 -fa 08c -p 1 -addresses -available
symcfg list -sid 1098 -fa 09c -p 0 -addresses -available
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
13. Mapping devices (cont.)
Here is a preview of how the
devices (Hyper) will be presented
(allocated) to the selected storage
HBA port.
You can change the Address
presented to the host, for better
administration. (some systems do
not like hexa values.)
Select the addresses with * from
the list gathered before, from OS.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
14. Mapping devices (cont.)
System will ask if you are sure to execute this.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
15. Mapping devices from CLI.
# more mapint07.cmd It can be necessary to add the LUN
map dev F31 to dir 8A:1; number for the host. This is obtained
map dev F31 to dir 9A:1; from command “symcfg -sid XX list -
map dev F35 to dir 8A:1; address -fa Xx -p x -available”; for
map dev F35 to dir 9A:1; HPUX, the values “VBUS TID LUN”
map dev F37 to dir 8A:1; give a number between the three of
map dev F37 to dir 9A:1; them (0 00 001=001), for the rest of
map dev F3A to dir 8A:1; OSs, the value under “LUN” column, is
the final LUN address for the host in
map dev F3A to dir 9A:1;
HEXA, that must be converted to DEC
map dev 1730 to dir 8A:1; for the system administrator.
map dev 1730 to dir 9A:1;
map dev 173F to dir 8A:1;
map dev 173F to dir 9A:1;
# Symconfigure –sid XX –f mapint07.cmd
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
16. Mapping devices from CLI.
# more unmapint07.cmd
unmap dev 03DB from dir 8A:1;
unmap dev 03DE from dir 8A:1;
unmap dev 03E1 from dir 8A:1;
unmap dev 03E4 from dir 8A:1;
The process is similar to map. The
unmap dev 03E7 from dir 8A:1; only changes is the unmap/map
unmap dev 03EA from dir 8A:1;
unmap dev 03ED from dir 8A:1;
modificator inside the file.
unmap dev 03F0 from dir 8A:1;
unmap dev 03F3 from dir 8A:1;
unmap dev 03F6 from dir 8A:1;
unmap dev 03DB from dir 9A:1;
unmap dev 03DE from dir 9A:1;
unmap dev 03E1 from dir 9A:1;
unmap dev 03E4 from dir 9A:1;
unmap dev 03E7 from dir 9A:1;
unmap dev 03EA from dir 9A:1;
unmap dev 03ED from dir 9A:1;
unmap dev 03F0 from dir 9A:1;
unmap dev 03F3 from dir 9A:1;
unmap dev 03F6 from dir 9A:1;
#symconfigure –sid XX –f unmapint07.cmd commit
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
17. Masking.
To make the storage visible to the host,
you must complete the LUN Masking
steps. To do so, go to “Hosts” section in
left pannel, right click on the desired host
(host to which allocate the storage) and
select “Masking > Modify Masking
Configurations”. This will take you to the
following screen.
This can be also done from CLI, with the
“symmaskdb” command.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
18. Masking. (cont.)
In this screen we will provide all the data
needed to complete the masking.
First select the ports (HBA ports) of the
server to which attach the devices.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
19. Masking.
Select both HBA’s WWPN on upper left box, choose
storae array, and select type of device as desired.
Finally, select the storage port to be assigned to.
In bottom list, check the devices you will be adding,
in pairs (as they are seen once per HBA port.)
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
20. Masking.
The is the completed list of tasks.
Once we have this, click on
“Grant” to execute the tasks.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
21. Masking: disks that were previously allocated to a host.
Note the differences between the marked devices: This is telling us that the disks were previously
assigned to another host/s, but they maybe still allocated or not. Please it is very important for you to
validate that you are not assigning a device for second time to the same or another host.
The thin line represents one previous assignment, the thick line represents more than one previous
assignment.
The disks you normally will be assigning/allocating, should not have this “underscore” mark on the
devices list.
This list is an example, as you can also see that there are some devices with granted permissions to a host.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
22. Validate Masking OK.
Verify in the detail that all the operations have been completed as desired.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
23. Masking from CLI.
symmask -sid XX -wwn wwnxxx -dir Xx -p x add dev “xxx” –noprompt
xxx”
symmaskdb -sid XX -wwn wwnxxx list database
Here we masked device “xxx”
Symmetrix ID : 666
to wwn “wwnxxx” by mapped
port “Xx:x”. Then, we verified
Database Type : Type6
Last updated at : 11:14:56 AM on Thu Jun 24,2010
the configuration. This process
is repeated for all devices
Director Identification : FA-Xx
FA-
Director Port :x
needing to be masked to a
wwn by a port, normally two
User-generated
User-
Identifier Type Node Name Port Name Devices
ports and two wwn for
---------------- ----- ------------------ --------------- --------- resilience.
10000000c9816180 Fibre 10000000c9816180 10000000c9816180 0F31
0F35
When working with Celerra
0F37 systems, replace “–noprompt”
0F3A
1730
with “–celerra”
173A:173C
173F
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
24. Verify on host (HPUX).
1. insf –eC disk
2. ioscan –fnC disk
3. inq –nodots | grep “device”
device”
Verify on host with ioscan –fnC disk and insf –C disk, that the Hyper (or LUN) has been
correctly assigned and visible to the Operating System.
If this does not work, use ioscan as it, and the insf –C.
For basic troubleshooting, use:
symmaskdb -sid 1098 list assignment -dev 10E8
symdev -sid 1098 show 10E8 | more
To show how the device is mapped to the host and were could be a communication loss.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
25. Verify on host (W2k).
From diskmgmt.msc, you will see new LUNs as “unallocated” devices. Check the LUN number provided by
diskmgmt.msc, unallocated”
storage administrator and initialize or format it, as corresponding.
corresponding.
Gastón Bénétrix.
Implementation Specialist – EMC Corporation.
