[HPDD-discuss] root squash problem

We have just installed Lustre 2.1.6 on SL6.4 systems. It is working well. However, I find that I am unable to apply root squash parameters. We have separate mgs and mdt machines. Under Lustre 1.8.4 this was not an issue for root squash commands applied on the mdt. However, when I modify the command syntax for lctl conf_param to what I think should now be appropriate, I run into difficulty. [root@lmd02 tools]# lctl conf_param mdt.umt3-MDT0000.nosquash_nids="10.10.2.33@tcp" No device found for name MGS: Invalid argument This command must be run on the MGS. error: conf_param: No such device [root@mgs ~]# lctl conf_param mdt.umt3-MDT0000.nosquash_nids="10.10.2.33@tcp" error: conf_param: Invalid argument I have not yet looked at setting the "root_squash" value, as this problem has stopped me cold. So, two questions: 1. Is this even possible with our split mgs/mdt machines? 2. If possible, what have I done wrong above? Thanks, bob