[Lustre-discuss] osc lost on MDS server

[Lu Wang]

Dear  list,
	Our MDS losts 5/7 osc devices after a reconfiguration:
	1.umount all osts
	2.tunfs.lustre --writeconf --mgs --mdt /dev/sda1
	3.mount -t ldiskfs mdtdevice mountpoint 
	4.rm CONFIGS/*
	5.mount -t lustre mdtdevice mountpoint
    6. mount all osts
	
	we can see 7 the osc devices on a mounted client, but only 2/7 osc devices on MDS. When I create a file with 7 stripe, the MDS server crashed. Any ideas?
	 lctl dl 
  0 UP mgs MGS MGS 707
  1 UP mgc MGC192.168.50.50 at tcp 43fc0787-3580-ce63-5019-94a7903f2fb0 5
  2 UP mdt MDS MDS_uuid 3
  3 UP lov besfs2-mdtlov besfs2-mdtlov_UUID 4
  4 UP mds besfs2-MDT0000 besfs2-MDT0000_UUID 803
  5 UP ost OSS OSS_uuid 3
  6 UP obdfilter besfs2-OST0000 besfs2-OST0000_UUID 803
  7 UP obdfilter besfs2-OST0001 besfs2-OST0001_UUID 805
  8 UP osc besfs2-OST0001-osc besfs2-mdtlov_UUID 5
  9 UP obdfilter besfs2-OST0002 besfs2-OST0002_UUID 805
 10 UP osc besfs2-OST0002-osc besfs2-mdtlov_UUID 5

    This is a small lustre installation. We have only 2 server, there are 3 OSTs and 1 MDT/MGS on one server, 4 OSTs on the other server.  The lustre version is :   2.6.9-67.0.22.EL_lustre.1.6.6smp on x86-64.

Best Regards
Lu Wang
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