On Fri, 2008-05-30 at 03:08 -0700, Johnlya wrote: > 1.First, I start one MDS on one machine and start two OST on another > OSS machine,the first OST data is shared with one disk by ISCSI. > > 2.Second, I stop(umount) one OST on OSS machine and deactive the > OST on MDS machine(lctl conf_param test-OST0000.osc.active=0); > > 3.Third,I install new machine and install Lustre, ISCSI. I > start(mount) the first OST by ISCSI and active the OST on MDS > machine(lctl conf_param test-OST0000.osc.active=1).It can work(mount > successfully). But I find the OST is inactive device on CLIENT machine > by command 'lfs df -h' and list files failed.
What are you trying to accomplish with these steps? It sounds like you are simply trying to move the OST "test-OST0000" from it's existing OSS to a new one, is this correct? If so, you can follow the process for "Changing a server nid" in the mountconf wiki at http://wiki.lustre.org/index.php?title=Mount_Conf#Changing_a_server_nid. I would suggest you read about the general Writeconf section that that procedure is a part of. b.
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