[LU-11710] File is lost after migrate a sub dir under dir with default stripe

• Type: Bug
• Resolution: Cannot Reproduce
• Priority: Minor
• Affects Version/s: Lustre 2.10.6
• Environment: lustre-b2_10 2.10.6-RC2 (build #149) ldiskfs DNE
• Severity: 3
• Assignee: WC Triage
• Reporter: Sarah Liu

Description

The file is lost after migrate a sub dir under a dir with default stripe, here are the steps
2 MDS with 1 MDT on each, 1 OST, 1 client

[root@trevis-60vm4 ~]# cd /mnt/lustre/
[root@trevis-60vm4 lustre]# mkdir test-0
[root@trevis-60vm4 lustre]# lctl dl
  0 UP mgc MGC10.9.6.158@tcp 3637a725-753d-86b4-1ebf-fb1bdf78fb28 4
  1 UP lov lustre-clilov-ffff978f79f97000 a48ec6c3-f700-afb4-00c3-9288ece40f26 3
  2 UP lmv lustre-clilmv-ffff978f79f97000 a48ec6c3-f700-afb4-00c3-9288ece40f26 3
  3 UP mdc lustre-MDT0000-mdc-ffff978f79f97000 a48ec6c3-f700-afb4-00c3-9288ece40f26 4
  4 UP mdc lustre-MDT0001-mdc-ffff978f79f97000 a48ec6c3-f700-afb4-00c3-9288ece40f26 4
  5 UP osc lustre-OST0000-osc-ffff978f79f97000 a48ec6c3-f700-afb4-00c3-9288ece40f26 4
[root@trevis-60vm4 lustre]# mkdir test-0/test-1
[root@trevis-60vm4 lustre]# lfs setdirstripe -D -c 2 test-0/
[root@trevis-60vm4 lustre]# touch test-0/test-1/foo
[root@trevis-60vm4 lustre]# echo aaa > test-0/test-1/foo 
[root@trevis-60vm4 lustre]# cat test-0/test-1/foo 
aaa
[root@trevis-60vm4 lustre]# lfs migrate -m 1 test-0/test-1
[root@trevis-60vm4 lustre]# ls test-0/test-1/
[root@trevis-60vm4 lustre]# 

I also tried on master branch, it doesn't have the problem