Can't see Newly created LUN by SAN admin


 
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Operating Systems Solaris Can't see Newly created LUN by SAN admin
# 8  
Old 01-23-2012
So the LUN was detected by Solaris. To confirm that the proper LUN is showing up in /var/adm/messages run: iostat -xn ssd100, then in the disk name similar to this:
Code:
c3t600C6660000000000999A65F43D17500d0

identify four characters before "d0" part (red). It is the LUN ID. Ask your storage admin if the newly assigned LUN ID is the same as the one extracted from the disk name. If it is the case, then you have your new LUN Smilie
edit: You can also use last four characters from your LUN path:
Code:
/scsi_vhci/ssd@g60a98000572d51384b4a686a3333376e

which is LUN ID as well Smilie
# 9  
Old 01-23-2012
ok sir that is correct what you said but then what does this mean:
Code:
Jan 23 11:53:20 db19 scsi: [ID 107833 kern.warning] WARNING: /scsi_vhci/ssd@g60a98000572d51384b4a686a3333376e (ssd100):
Jan 23 11:53:20 db19         Corrupt label; wrong magic number

kindly tell me what is mean by " Corrupt label; wrong magic number" and "ssd100"

please do guide and do recommend dome reading to know all such kind of things

please

many regards

Last edited by DukeNuke2; 01-23-2012 at 12:16 PM..
# 10  
Old 01-23-2012
It is usual error message when new LUN is connected to the server. It indicates that there is no partition table specified there yet. Depending on what you want to do with this LUN, you might need to write new partition table (label it) with format utility.
You can read about disk management in Solaris here: http://docs.oracle.com/cd/E23823_01/...html#scrolltoc

Last edited by bartus11; 01-23-2012 at 12:09 PM..
# 11  
Old 01-23-2012
sir i got you but kindly suggest some reading material to know all these thing related to LUN etc and one last thing if you have read the attatchement of cfgadm -al output so here we have c1 and c2 ,two 4 gig fiber cards and c1 is unconfigured . the ouput is as follows

Code:
c1                              fc-fabric    connected    unconfigured      unknown
c1::2100000e77006483           unavailable  connected    unconfigured failed
c1::2100001b32988752           unknown      connected    unconfigured unknown
c1::2104000e77006483           unavailable  connected    unconfigured failed
c2                             fc-fabric    connected    configured   unknown

now how i can reconfigure it

please guide

Last edited by DukeNuke2; 01-23-2012 at 02:53 PM..
# 12  
Old 01-24-2012
The way I see it is the following:
1. your storage admin created the LUN on the NetApp array (what type is it?)
2. he should've given you the WWN of that new LUN so that you or any other Solaris admin can map it to the specified host. It's what Duke has asked you to verify.

Have you done that? What volume manager are you using on the host (SVM, VxVM, etc.)? Are there any ports down on the SAN switch that could affect the multipathing (those "multipath status: degraded" messages aren't a good omen)? Are you using MPxIO or VxDMP as multipathing solution (looks like mpxio, but I just wanna be sure)?

Also, check those "statd - RPC" errors too (I don't know if they're related) you seem to have some remote procedure calls that can't go through because of authentication issues...

In the end, I would advise you to take into account a bug that might affect your system: Bug 6614241 - MPxIO never re-enables a previously failed iSCSI path

This is for iSCSI, but it's worth taking a look at what the output is, maybe you've misconfigured your SAN (go to support.oracle.com):

"For the Sun target we see this error frequently
Oct 5 06:25:59 sunx4200-shu02 genunix: [ID 265984 kern.warning] WARNING: Page83 data not standards compliant SUN SOLARIS 1
and for the Netapp target we see this one...
Oct 5 10:58:43 sunx4200-shu02 genunix: [ID 198094 kern.warning] WARNING: Page83 data not standards compliant NETAPP LUN 0.2
This seems to be a case of Solaris checking compliance against an old version of the spec."
# 13  
Old 01-25-2012
Try these commands step by step and see if you can see the new LUN in the format output. Let us know...


HTML Code:
#cfgadm -al

#devfsadm -C 

#devfsadm -c disk

Momin

---------- Post updated at 01:02 PM ---------- Previous update was at 12:59 PM ----------

Dont worry about the corrupt label... that shows the new disk is seen by the OS. Run the format command and select the NEW disk/LUN. It should ask you label. Just say YES. If you you are not propmpted to label, just type label at the format prompt after selecting the new LUN to label that and that's it!

Momin
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