Adding SAN drives

[redwings]

Hello everyone,

I have been attached to SAn and i am wondering what i need to do to get the drives up and in working order. When i do lspv command this is what i see:
root@monsys4:/>lspv
hdisk0 0003661952bbe640 rootvg
hdisk1 0003661976e30917 rootvg
hdisk2 0003661976e15f64 raid_1vg
hdisk3 000366190585d8bf raid_2vg
hdisk5 none None
hdisk6 none None
hdisk7 none None

Hdisk5, 6 and 7 are on the SAN, what do i have to set up to use them?

Thanks in advance

 

[comtec17]

The only thing you will need to do is either:

1. Add them to an existing VG

2. Create a new VG and add these disks.

Even though these are SAN attached disks, the system will see them as a regular disk drive. Just do your normal Admin stuff to get these drives up and into a VG.

 

[redwings]

When I try to create a VG with these selected drives this is the message I get:

0516-796 mkvg: Making hdisk5 a physical volume. Please wait.
Method error (/usr/lib/methods/chgdisk):
0514-047 Cannot access a device.

0516-1207 mkvg: An invalid physical volume ID been detected on hdisk5.
0516-862 mkvg: Unable to create volume group.

Any idea on why I can see them but can not use them?

 

[comtec17]

Have you tried:

chdev -l hdisk# -a pvid=yes

 

[redwings]

This is what i receive when i run that command.

root@monsys4:/>chdev -l hdisk5 -a pvid=yes
Method error (/usr/lib/methods/chgdisk):
0514-018 The values specified for the following attributes
are not valid:
pvid Physical Volume Identifier

 

[comtec17]

Post the results of the following:

lsdev -Cc disk

 

[redwings]

Here is the output:

root@monsys4:/>lsdev -Cc disk
hdisk0 Available 10-60-00-8,0 16 Bit SCSI Disk Drive
hdisk1 Available 10-60-00-9,0 16 Bit SCSI Disk Drive
hdisk2 Available 20-58-L SSA Logical Disk Drive
hdisk3 Available 20-58-L SSA Logical Disk Drive
hdisk4 Defined 30-70-00-0,0 Fibre Channel SCSI FCP Disk Drive
hdisk5 Available 30-70-10-5,0 Fibre Channel SCSI FCP Disk Drive
hdisk6 Available 30-70-10-5,16 Fibre Channel SCSI FCP Disk Drive
hdisk7 Available 30-70-10-5,17 Fibre Channel SCSI FCP Disk Drive

 

[comtec17]

Can you post the results of the following as well:

lsattr -El hdisk5

lsattr -El hdisk6

 

[redwings]

Here is the output from those commands:

root@monsys4:/>lsattr -El hdisk5
pvid none Physical Volume Identifier False
queue_depth 8 Queue Depth True
q_type simple Queue Type True
q_err yes Queue Error True
clr_q no Clear Queue True
rw_timeout 30 Read/Write Timeout True
start_timeout 60 Start Timeout True
reassign_to 120 Reassign to True

root@monsys4:/>lsattr -El hdisk6
pvid none Physical Volume Identifier False
queue_depth 8 Queue Depth True
q_type simple Queue Type True
q_err yes Queue Error True
clr_q no Clear Queue True
rw_timeout 30 Read/Write Timeout True
start_timeout 60 Start Timeout True
reassign_to 120 Reassign to True

 

[comtec17]

I am not seeing information on this about it being a SAN attached disk drive.

What type of SAN storage do you have?

I would also advise removing those hdisks out of the config and readding them.

Do the following:

rmdev -l hdisk4 -d
rmdev -l hdisk5 -d
rmdev -l hdisk6 -d

Then run cfgmgr

 

[dlpar]

I had this problem once with an V960 Storagetek.
It was not an UNIX problem.
The disk was not pSeries class but zSeries class.
Check with your SAN administrator.

 

[redwings]

Thanks for all the help. I sat down with my SAN Admin and found out that hdisk5 was just a marker and that the other two drives were set up correctly. As soon as that was determined I tried creating the VG just using hdisk6 and hdisk7 and the san drives came up.

Thanks again for the help.