Reexport works but in kernel messages logged the following:
Lustre: ctl-lustre-MDT0000: super-sequence allocation rc = 0 [0x0000000200000400-0x0000000240000400):0:mdt
LustreError: 3819:0:(llite_nfs.c:105:search_inode_for_lustre()) can't get object attrs, fid [0x200000400:0x1:0x0], rc -2
LustreError: 3819:0:(llite_nfs.c:105:search_inode_for_lustre()) can't get object attrs, fid [0x200000400:0x1:0x0], rc -2
LustreError: 3819:0:(llite_nfs.c:105:search_inode_for_lustre()) can't get object attrs, fid [0x200000400:0x1:0x0], rc -2
LustreError: 3819:0:(llite_nfs.c:105:search_inode_for_lustre()) can't get object attrs, fid [0x200000400:0x1:0x0], rc -2
LustreError: 3819:0:(llite_nfs.c:105:search_inode_for_lustre()) can't get object attrs, fid [0x200000400:0x1:0x0], rc -2
LustreError: 3819:0:(llite_nfs.c:105:search_inode_for_lustre()) can't get object attrs, fid [0x200000400:0x1:0x0], rc -2
LustreError: 3819:0:(llite_nfs.c:105:search_inode_for_lustre()) Skipped 1 previous similar message
LustreError: 3819:0:(llite_nfs.c:105:search_inode_for_lustre()) can't get object attrs, fid [0x200000400:0x1:0x0], rc -2
LustreError: 3819:0:(llite_nfs.c:105:search_inode_for_lustre()) Skipped 2 previous similar messages