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ioscan doesn't list the SAN storage disks

 
karthikbalu
Advisor

ioscan doesn't list the SAN storage disks

Hi,

I have strange issue with the newly attached SAN storage disks.  ioscan couldn't list the SAN disks. There is no errors/Clue on dmesg or syslog.  Ran ioscan/insf -e and even rebooted the server. Disabled and enabled legacy mode.   

#ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
=======================================================================
disk 0 0/0/0/3/0.6.0 sdisk CLAIMED DEVICE HP 146 GST3146855LC
/dev/dsk/c0t6d0 /dev/dsk/c0t6d0s2 /dev/rdsk/c0t6d0 /dev/rdsk/c0t6d0s2
/dev/dsk/c0t6d0s1 /dev/dsk/c0t6d0s3 /dev/rdsk/c0t6d0s1 /dev/rdsk/c0t6d0s3
disk 1 0/0/1/1/0/4/1.5.0 sdisk CLAIMED DEVICE HP 146 GST3146855LC
/dev/dsk/c3t5d0 /dev/rdsk/c3t5d0
:#

------------------------------

Here i can see the disks.

#ioscan -fnNC disk
Class I H/W Path Driver S/W State H/W Type Description
===================================================================
disk 2 64000/0xfa00/0x0 esdisk CLAIMED DEVICE HP 146 GST3146855LC
/dev/disk/disk2 /dev/disk/disk2_p2 /dev/rdisk/disk2 /dev/rdisk/disk2_p2
/dev/disk/disk2_p1 /dev/disk/disk2_p3 /dev/rdisk/disk2_p1 /dev/rdisk/disk2_p3
disk 3 64000/0xfa00/0x1 esdisk CLAIMED DEVICE HP 146 GST3146855LC
/dev/disk/disk3 /dev/rdisk/disk3
disk 8 64000/0xfa00/0x28 esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk8 /dev/rdisk/disk8
disk 13 64000/0xfa00/0x29 esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk13 /dev/rdisk/disk13
disk 15 64000/0xfa00/0x2a esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk15 /dev/rdisk/disk15
disk 16 64000/0xfa00/0x2b esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk16 /dev/rdisk/disk16
disk 17 64000/0xfa00/0x2c esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk17 /dev/rdisk/disk17
disk 20 64000/0xfa00/0x2d esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk20 /dev/rdisk/disk20
disk 22 64000/0xfa00/0x2e esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk22 /dev/rdisk/disk22
#

----------------------------

Sample o/p of storage disks:

:#powermt display dev=all
Pseudo name=disk13
VNX ID=CKM0015500xxxx [xxxxxx]
Logical device ID=600601602DD03E0008DC086D84D2E711 [LUN 420]
state=alive; policy=CLAROpt; queued-IOs=0
Owner: default=SP A, current=SP A Array failover mode: 4
==============================================================================
--------------- Host --------------- - Stor - -- I/O Path -- -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 0/0/12/1/0.0x5006016a0960121a.0x4001000000000000 lunpath58 SP B2 active alive 0 0
0 0/0/12/1/0.0x500601620960121a.0x4001000000000000 lunpath48 SP A2 active alive 0 0

Pseudo name=disk15
VNX ID=CKM0015500xxxx [xxxxxx]
Logical device ID=600601602DD03E00D835DDD584D2E711 [LUN 432]
state=alive; policy=CLAROpt; queued-IOs=0
Owner: default=SP A, current=SP A Array failover mode: 4
==============================================================================
--------------- Host --------------- - Stor - -- I/O Path -- -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 0/0/12/1/0.0x5006016a0960121a.0x4005000000000000 lunpath59 SP B2 active alive 0 0
0 0/0/12/1/0.0x500601620960121a.0x4005000000000000 lunpath49 SP A2 active alive 0 0

Pseudo name=disk16
VNX ID=CKM0015500xxxx [xxxxx]
Logical device ID=600601602DD03E00159F483585D2E711 [LUN 421]
state=alive; policy=CLAROpt; queued-IOs=0
Owner: default=SP B, current=SP B Array failover mode: 4
==============================================================================
--------------- Host --------------- - Stor - -- I/O Path -- -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 0/0/12/1/0.0x5006016a0960121a.0x4002000000000000 lunpath52 SP B2 active alive 0 0
0 0/0/12/1/0.0x500601620960121a.0x4002000000000000 lunpath50 SP A2 active alive 0 0

Wondering why the paths are showing lunpathxx on powerpath o/p which is suppose to be cxtxdx.  

Thanks & Regards,

Karthik Balu.

 

5 REPLIES 5
Torsten.
Acclaimed Contributor

Re: ioscan doesn't list the SAN storage disks

This could be a reason:

disable the Legacy naming model of disk drives 
 
#rmsf -L
 
To enable the legacy naming model

 # insf -L

Hope this helps!
Regards
Torsten.

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karthikbalu
Advisor

Re: ioscan doesn't list the SAN storage disks

I tried disabling and enabling the  logacy mode but it didn't solve my problem.

#ioscan -kfnNC disk
Class I H/W Path Driver S/W State H/W Type Description
===================================================================
disk 2 64000/0xfa00/0x0 esdisk CLAIMED DEVICE HP 146 GST3146855LC
/dev/disk/disk2 /dev/disk/disk2_p2 /dev/rdisk/disk2 /dev/rdisk/disk2_p2
/dev/disk/disk2_p1 /dev/disk/disk2_p3 /dev/rdisk/disk2_p1 /dev/rdisk/disk2_p3
disk 3 64000/0xfa00/0x1 esdisk CLAIMED DEVICE HP 146 GST3146855LC
/dev/disk/disk3 /dev/rdisk/disk3
disk 8 64000/0xfa00/0x28 esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk8 /dev/rdisk/disk8
disk 13 64000/0xfa00/0x29 esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk13 /dev/rdisk/disk13
disk 15 64000/0xfa00/0x2a esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk15 /dev/rdisk/disk15
disk 16 64000/0xfa00/0x2b esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk16 /dev/rdisk/disk16
disk 17 64000/0xfa00/0x2c esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk17 /dev/rdisk/disk17
disk 20 64000/0xfa00/0x2d esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk20 /dev/rdisk/disk20
disk 22 64000/0xfa00/0x2e esdisk CLAIMED DEVICE DGC VNX5600WDVR
/dev/disk/disk22 /dev/rdisk/disk22

With the above o/p i can see all the available disks but ioscan -m dsf lists only few

#ioscan -m dsf
Persistent DSF Legacy DSF(s)
========================================
/dev/rdisk/disk2 /dev/rdsk/c0t6d0
/dev/rdisk/disk2_p1 /dev/rdsk/c0t6d0s1
/dev/rdisk/disk2_p2 /dev/rdsk/c0t6d0s2
/dev/rdisk/disk2_p3 /dev/rdsk/c0t6d0s3
/dev/rdisk/disk3 /dev/rdsk/c3t5d0

 

 

 

 

Torsten.
Acclaimed Contributor

Re: ioscan doesn't list the SAN storage disks

Make sure the array has set the "Volume Set Addressing" flag.


Hope this helps!
Regards
Torsten.

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those who understand binary, and those who don't.

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Karthik4
Occasional Visitor

Re: ioscan doesn't list the SAN storage disks

This is not Symmentrix Array. I have VNC 5600 and i dont think i can choose this option in this array.

-Karthik Balu.

Torsten.
Acclaimed Contributor

Re: ioscan doesn't list the SAN storage disks

almost all arrays have a special presentation mode for hp-ux.

Hope this helps!
Regards
Torsten.

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those who understand binary, and those who don't.

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