Agile naming and EMC

[Maurice Commandeur]

Hi all,

I've just got a brand new ia64 hp server rx7640, with 11.31 installed.
I want to use the new persistent DSF. So I added some disks from my EMC to this machine and I can see them over two paths:

root@app010:~# syminq

Device Product Device
------------------------- --------------------------- ---------------------
Name Type Vendor ID Rev Ser Num Cap (KB)
------------------------- --------------------------- ---------------------
/dev/rdsk/c0t6d0 HP 146 G ST3146707LC HPC2 3KS47X0Y 143374744
/dev/rdsk/c0t6d0s1 HP 146 G ST3146707LC HPC2 3KS47X0Y 143374744
/dev/rdsk/c0t6d0s2 HP 146 G ST3146707LC HPC2 3KS47X0Y 143374744
/dev/rdsk/c0t6d0s3 HP 146 G ST3146707LC HPC2 3KS47X0Y 143374744
/dev/rdsk/c1t2d0 _NEC DVD_RW ND-3* 1.31 05092700 N/A
/dev/rdsk/c3t6d0 HP 146 G ST3146707LC HPC2 3KS47WYY 143374744
/dev/rdsk/c3t6d0s1 HP 146 G ST3146707LC HPC2 3KS47WYY 143374744
/dev/rdsk/c3t6d0s2 HP 146 G ST3146707LC HPC2 3KS47WYY 143374744
/dev/rdsk/c5t3d5 R1 EMC SYMMETRIX 5671 65000ED000 71454720
/dev/rdsk/c5t3d6 R1 EMC SYMMETRIX 5671 6500037000 17863680
/dev/rdsk/c5t3d7 R1 EMC SYMMETRIX 5671 6500142000 17863680
/dev/rdsk/c5t4d0 R1 EMC SYMMETRIX 5671 6500144000 17863680
/dev/rdsk/c7t4d1 R1 EMC SYMMETRIX 5671 65000ED000 71454720
/dev/rdsk/c7t4d2 R1 EMC SYMMETRIX 5671 6500037000 17863680
/dev/rdsk/c7t4d3 R1 EMC SYMMETRIX 5671 6500142000 17863680
/dev/rdsk/c7t4d4 R1 EMC SYMMETRIX 5671 6500144000 17863680

Here you can see that there are two EMC disks with the id 0ED and they are both 70gig. These are the same disks over two paths.
Fine so far....
If I look with ioscan -m dsf, I can see that each disk has it's own persistent DSF :

root@app010:~# ioscan -m dsf
Persistent DSF Legacy DSF(s)
========================================
/dev/pt/pt1 /dev/rscsi/c4t2d0
/dev/pt/pt3 /dev/rscsi/c6t4d0
/dev/rdisk/disk3 /dev/rdsk/c0t6d0
/dev/rdisk/disk3_p1 /dev/rdsk/c0t6d0s1
/dev/rdisk/disk3_p3 /dev/rdsk/c0t6d0s3
/dev/rdisk/disk3_p2 /dev/rdsk/c0t6d0s2
/dev/rdisk/disk4 /dev/rdsk/c1t2d0
/dev/rdisk/disk5 /dev/rdsk/c3t6d0
/dev/rdisk/disk5_p1 /dev/rdsk/c3t6d0s1
/dev/rdisk/disk5_p2 /dev/rdsk/c3t6d0s2
/dev/rdisk/disk7 /dev/rdsk/c5t0d0
/dev/rdisk/disk9 /dev/rdsk/c7t0d0
/dev/rdisk/disk12 /dev/rdsk/c5t3d5
/dev/rdisk/disk13 /dev/rdsk/c7t4d1
/dev/rdisk/disk20 /dev/rdsk/c7t4d2
/dev/rdisk/disk21 /dev/rdsk/c7t4d3
/dev/rdisk/disk22 /dev/rdsk/c7t4d4
/dev/rdisk/disk23 /dev/rdsk/c5t3d6
/dev/rdisk/disk24 /dev/rdsk/c5t3d7
/dev/rdisk/disk25 /dev/rdsk/c5t4d0

You can see here that device disk12 and disk13 point to that same disk.
This would negate the whole new agile stuff what would make 11.31 so interesting....

Could anyone help me with this issue.

[Maurice Commandeur]

I would expect the following output from ioscan :
# ioscan -m dsf /dev/disk/disk12
Persistent DSF Legacy DSF(s)
========================================
/dev/disk/disk12 /dev/dsk/c5t3d5
/dev/dsk/c7t4d1

[Hasan Atasoy]

hi
did you try to remove the address by HW path ( rmsf -H ... ) and scan again


hasan

[Hasan Atasoy · Accepted solution]

hi

for 11.31 support on emc side , SPC-2 bit should be set on EMC.

hasan

[Geoff Wild]

Here's a link to the EMC Host Connectivity guide - see page 24 for info on SPC2 bit:

http://www.met.ca/itrc/index.php?option=com_docman&task=cat_view&gid=16&Itemid=26

Rgds...Geoff

[Torsten.]

There must be something wrong with your presentation mode.

dev/rdisk/disk12 /dev/rdsk/c5t3d5 == LUN29

dev/rdisk/disk13 /dev/rdsk/c7t4d1 == LUN33

[Maurice Commandeur]

I found EMC163034 on powerlink.

I did a :
symmask -sid 1065 set hba_flags on SPC2 -enable -wwn 50060b0000667c2c -dir 1D -p 0
and a :
symmask -sid 1065 set hba_flags on SPC2 -enable -wwn 50060b00006838b4 -dir 16D -p 0

And worked fine !

[Maurice Commandeur]

Everyone great thanks.
The symmask command can only be done with Solutions enabler 6.4 or later.