# lfs setstripe -E64k -L mdt -Eeof /mnt/lustre/file
# lfs mirror extend -N -E1M -L mdt -Eeof /mnt/lustre/file
# lfs getstripe /mnt/lustre/file
/mnt/lustre/file
lcm_layout_gen: 3
lcm_mirror_count: 2
lcm_entry_count: 4
lcme_id: 65537
lcme_mirror_id: 1
lcme_flags: init
lcme_extent.e_start: 0
lcme_extent.e_end: 65536
lmm_stripe_count: 0
lmm_stripe_size: 65536
lmm_pattern: mdt
lmm_layout_gen: 0
lmm_stripe_offset: 0
lcme_id: 65538
lcme_mirror_id: 1
lcme_flags: 0
lcme_extent.e_start: 65536
lcme_extent.e_end: EOF
lmm_stripe_count: 1
lmm_stripe_size: 65536
lmm_pattern: raid0
lmm_layout_gen: 0
lmm_stripe_offset: -1
lcme_id: 131073
lcme_mirror_id: 2
lcme_flags: init,stale
lcme_extent.e_start: 0
lcme_extent.e_end: 1048576
lmm_stripe_count: 0
lmm_stripe_size: 1048576
lmm_pattern: mdt
lmm_layout_gen: 0
lmm_stripe_offset: 0
lcme_id: 131074
lcme_mirror_id: 2
lcme_flags: 0
lcme_extent.e_start: 1048576
lcme_extent.e_end: EOF
lmm_stripe_count: 1
lmm_stripe_size: 1048576
lmm_pattern: raid0
lmm_layout_gen: 0
lmm_stripe_offset: -1
# cat /mnt/lustre/file
cat: /mnt/lustre/file: Invalid argument
# dmesg
[82972.256548] LustreError: 112613:0:(lov_object.c:669:lov_init_composite()) lustre-clilov-ffff8fb210559800: DOM entries with different sizes
[82972.259975] LustreError: 112613:0:(lov_ea.c:633:dump_lsm()) lsm 00000000320cd603, objid 0x0:0, maxbytes 0x400000fe000, magic 0x0BD60BD0, refc: 2, entry: 4, mirror: 1, flags: 1,layout_gen 3
[82972.264191] LustreError: 112613:0:(lov_ea.c:655:dump_lsm()) [0x0, 0x10000): id: 65537, flags: 10, magic 0x0BD10BD0, layout_gen 0, stripe count 0, sstripe size 65536, pool: []
[82972.268485] LustreError: 112613:0:(lov_ea.c:655:dump_lsm()) [0x10000, 0xffffffffffffffff): id: 65538, flags: 0, magic 0x0BD10BD0, layout_gen 65535, stripe count 1, sstripe size 65536, pool: []
[82972.272944] LustreError: 112613:0:(lov_ea.c:655:dump_lsm()) [0x0, 0x100000): id: 131073, flags: 11, magic 0x0BD10BD0, layout_gen 0, stripe count 0, sstripe size 1048576, pool: []
[82972.276985] LustreError: 112613:0:(lov_ea.c:655:dump_lsm()) [0x100000, 0xffffffffffffffff): id: 131074, flags: 0, magic 0x0BD10BD0, layout_gen 65535, stripe count 1, sstripe size 1048576, pool: []
[82972.281335] LustreError: 112613:0:(lov_object.c:1303:lov_layout_change()) lustre-clilov-ffff8fb210559800: cannot apply new layout on [0x200000402:0x1:0x0] : rc = -22
[82972.285438] LustreError: 112613:0:(lcommon_cl.c:196:cl_file_inode_init()) lustre: failed to initialize cl_object [0x200000402:0x1:0x0]: rc = -22
[82972.289076] LustreError: 112613:0:(llite_lib.c:3594:ll_prep_inode()) new_inode -fatal: rc -22
# rm /mnt/lustre/file
rm: cannot remove '/mnt/lustre/file': Invalid argument