[LU-10480] llapi_printf() prefixes command name to the output

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.11.0
• Severity: 3
• Assignee: Zhenyu Xu
• Reporter: Zhenyu Xu

Description

commit 7a16f18ae1ef5d21812c916470022280617c4e91 makes info_callback_default() to prefix program name to the output, and liblustreapi uses a lot to call llapi_info_callback()->info_callback_default() to output.

# lfs getstripe /mnt/lustre/file
lfs getstripe: /mnt/lustre/file
lfs getstripe: lfs getstripe:   lcm_layout_gen:    3
lfs getstripe: lfs getstripe:   lcm_mirror_count:  1
lfs getstripe: lfs getstripe:   lcm_entry_count:   3
lfs getstripe: lfs getstripe: lfs getstripe:     lcme_id:             1
lfs getstripe: lfs getstripe: lfs getstripe:     lcme_flags:          init
lfs getstripe: lfs getstripe: lfs getstripe:     lcme_extent.e_start: 0
lfs getstripe: lfs getstripe: lfs getstripe:     lcme_extent.e_end:   1048576
lfs getstripe: lfs getstripe: lfs getstripe:       lmm_stripe_count:  1
lfs getstripe: lfs getstripe: lfs getstripe:       lmm_stripe_size:   1048576
lfs getstripe: lfs getstripe: lfs getstripe:       lmm_pattern:       raid0
lfs getstripe: lfs getstripe: lfs getstripe:       lmm_layout_gen:    0
lfs getstripe: lfs getstripe: lfs getstripe:       lmm_stripe_offset: 1
lfs getstripe:       lmm_objects:
lfs getstripe:       - 0: { l_ost_idx: 1, l_fid: [0x100010000:0xa:0x0] }
lfs getstripe: 
...