[LU-17615] DNE3: 'lfs getdirstripe -y DIR' does not print YAML output for directories

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Affects Version/s: Lustre 2.14.0, Lustre 2.16.0, Lustre 2.15.0
• Labels: dne3 easy lug24dd
• Severity: 3
• Assignee: WC Triage
• Reporter: Andreas Dilger

Description

Running "lfs getdirstripe -y DIR" does not print YAML-formatted output for a striped directory:

# lfs getdirstripe -y /mnt/testfs/dir4
lmv_stripe_count: 4
lmv_stripe_offset: 0
lmv_hash_type: fnv_1a_64
mdtidx           FID[seq:oid:ver]
     0           [0x200000400:0x4:0x0]  
     2           [0x280000403:0x4:0x0]  
     3           [0x2c0000401:0x4:0x0]  
     1           [0x240000403:0x4:0x0]  

This should print proper YAML-formatted information about the MDT object FIDs, similar to what "lfs getstripe -y FILE" does for regular files:

# lfs getstripe -y /mnt/testfs/etc/hosts
lmm_stripe_count:  1
lmm_stripe_size:   1048576
lmm_pattern:       raid0
lmm_layout_gen:    0
lmm_stripe_offset: 2
lmm_objects:
      - l_ost_idx: 2
        l_fid:     0x380000403:0xd:0x0

However, this is also a bit confusing because "lfs getdirstripe DIR" on an unstriped directory does not print any MDT object FIDs for DIR:

# lfs getdirstripe -v /mnt/testfs/dir
lmv_stripe_count: 0 lmv_stripe_offset: 3 lmv_hash_type: none

This is inconsistent with "lfs getstripe FILE" which prints OST object information for files even if they only have a single stripe.

Since the "--yaml" option is currently broken, it would be OK to have this print out the MDT object FIDs for unstriped directories. Similarly, "lfs getdirstripe -v" doesn't appear to do anything for directories, so it should also be changed to print the MDT object FIDs.

Issue Links

• duplicates: LU-16491 "lfs getdirstripe -y" doesn't print YAML formatted output