[LU-18725] Create ll_decode_lov

• Type: Improvement
• Resolution: Unresolved
• Priority: Minor
• Labels: utils
• Severity: 3
• Assignee: Sohei Koyama
• Reporter: Sohei Koyama

Description

Like ll_decode_linkea, create ll_decode_lov.
This allows us to directly scan the MDT for information that can be obtained with lfs getstripe.

[root@lustre-serv ~]# ll_decode_lov /mnt/ldiskfs/ROOT/st/foo 
lmm_stripe_count:  2
lmm_stripe_size:   1048576
lmm_pattern:       raid0
lmm_layout_gen:    0
lmm_stripe_offset: 1
  obdidx  objid    objid(hex)  group
  1  2    0x2    0x280000400
  0  20162    0x4ec2    0x240000400
[root@lustre-serv ~]# lfs getstripe /lustre/st/foo 
/lustre/st/foo
lmm_stripe_count:  2
lmm_stripe_size:   1048576
lmm_pattern:       raid0
lmm_layout_gen:    0
lmm_stripe_offset: 1
  obdidx     objid     objid     group
       1               2            0x2     0x280000400
       0           20162         0x4ec2     0x240000400