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@db.com 973.682.3463 -- This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/