5 The 'lov_mds_md' structure is a Lock Value Block (LVB) for layout
6 locks. In replies to lock requests and other situations requiring
7 layout information from an MDT the 'lov_mds_md' information provides
8 details about the layout of a file across the OSTs.
15 __u32 lmm_stripe_size;
16 __u16 lmm_stripe_count;
18 struct lov_ost_data_v1 lmm_objects[0];
22 The 'lmm_magic' field is filled in with the value LOV_MAGIC
23 (0x0BD10BD0) when the structure is in use. If the structure is in a
24 buffer of an RPC without the magic number in place, then the rest of
25 the structure is ignored.
27 The 'lmm_pattern' field is only ever set to LOV_PATTERN_RAID0
30 The 'lmm_oi' field gives the LOV object ID for the first OST of the
31 layout. This is the OST where striping will begin.
33 The 'lmm_stripe_size' field give the stripe size for the object. This
34 is how many bytes will be on a particular OST before going to the next
37 The 'lmm_stripe_count' field gives how many OSTs the file is striped
40 The 'lmm_layout_gen' field ges updated as the layout of the obeject is
41 updated. This way out-of-date references to the layout can be
44 The 'lmm_objects' array gives per-stripe data for more complex
45 (non-uniform) layouts.