[CentOS] CentOS 6, iscsi issue

Hi, folks,

   Ok, I had iscsi working. Then I umounted the filesystem, and deleted
the logical volume, then the RAID, and recreated it with a) 4 more
drives (or was it six?), gave it a new RG name, and a new VD name.

   I can ping the IP, but can't rediscover it - just get "no portals
found". I'm finding a fair number of people with this issue, googling,
but not a lot of answers. Anyone know what I've done wrong?

      mark