[linux-lvm] How to associate two paths for each EMC device?

[Shan Jing]

I have 22  EMC symmetrix disks on two HBA links.  At this moment, there is no working copy of EMC powerpath or HP Securepath available for my kernel (2.4.21-112-itanium2-smp); therefore, I have to use the luns directly with lvm without any DMP software in the middle.

Without DMP software, there are two set of 22 luns, each representing one HBA path.  See blow.

Question,
What is the best way to associate two paths for each real disk?

eg, I have the following 44 luns, what's the best way to identiy the pairs that represent the two paths of the same disk?  Thanks!

lvmdiskscan -- /dev/sdag   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdah   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdai   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdaj   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdak   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdal1  [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdam1  [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdan   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdao   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdap   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdaq   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdar   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdas   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdat   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdau1  [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdq    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdr    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sds    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdt    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdu    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdv    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdw    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdx1   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdz    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdaa   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdab   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdac   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdad   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdae   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdaf   [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdc    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdd    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sde    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdf    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdg    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdh    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdi    [      42.15 GB] free whole disk
lvmdiskscan -- /dev/sdj1   [      42.15 GB] free whole disk


Regards,
Shan Jing

Unix Group - Americas
Deutsche Bank
2 Gatehall Drive, 3rd Floor
Parsippany, New Jersey, USA
shan.jing at db.com
973.682.3463




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