[LU-7059] Multiple hard link file cannot be accessed after migration

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.8.0
• Fix Version/s: Lustre 2.8.0
• Type: Bug
• Priority: Minor
• Reporter: Sarah Liu
• Assignee: Di Wang
• Resolution: Fixed
• Labels: dne2

Environment

lustre-master build # 3142 RHEL6.6
mdtcount=4 ostcount=4 client=1

• Severity: 3

Description

Here is what I did
1. create 2 dirs: test1 and other-dir2 on MDT0
2. create some file under test1;
3. in other-dir2, create hard link and soft link to the files in test1
4. migrate test1, no errors

[root@onyx-27 lustre]# lfs migrate -m 1 /mnt/lustre/test1
[root@onyx-27 lustre]# ls -al test1
total 8
drwxr-xr-x  2 root root 4096 Aug 28 15:28 .
drwxr-xr-x 12 root root 4096 Aug 28 15:23 ..
-rw-r--r--  2 root root    0 Aug 28 15:23 t1
-rw-r--r--  1 root root    0 Aug 28 15:24 t2
-rw-r--r--  1 root root    0 Aug 28 15:24 t3
[root@onyx-27 lustre]# ls -al other-dir2/
total 8
drwxr-xr-x  2 root root 4096 Aug 28 15:27 .
drwxr-xr-x 12 root root 4096 Aug 28 15:23 ..
-rw-r--r--  2 root root    0 Aug 28 15:23 t1-t1
lrwxrwxrwx  1 root root   11 Aug 28 15:27 t2-t1 -> ../test2/t1
[root@onyx-27 lustre]# lfs getstripe -M test1
1
[root@onyx-27 lustre]# lfs getstripe -M test1/t1
0
[root@onyx-27 lustre]# lfs getstripe -M test1/t2
1
[root@onyx-27 lustre]# lfs getstripe -M test1/t3
1

5. migrate other-dir2, the multiple hard link file cannot be accessed:

[root@onyx-27 lustre]# lfs migrate -m 1 /mnt/lustre/other-dir2
[root@onyx-27 lustre]# ls -al test1
ls: cannot access test1/t1: No such file or directory
total 8
drwxr-xr-x  2 root root 4096 Aug 28 15:28 .
drwxr-xr-x 12 root root 4096 Aug 28 15:28 ..
-?????????  ? ?    ?       ?            ? t1
-rw-r--r--  1 root root    0 Aug 28 15:24 t2
-rw-r--r--  1 root root    0 Aug 28 15:24 t3
[root@onyx-27 lustre]# cat test1/t1
cat: test1/t1: No such file or directory
[root@onyx-27 lustre]# cat test1/t2
[root@onyx-27 lustre]# ls -al other-dir2
ls: cannot access other-dir2/t1-t1: No such file or directory
total 8
drwxr-xr-x  2 root root 4096 Aug 28 15:32 .
drwxr-xr-x 12 root root 4096 Aug 28 15:28 ..
-?????????  ? ?    ?       ?            ? t1-t1
lrwxrwxrwx  1 root root   11 Aug 28 15:27 t2-t1 -> ../test2/t1

Comments

[Gerrit Updater]

wangdi ([e-mail]) uploaded a new patch: http://review.whamcloud.com/16131
Subject: LU-7059 mdt: reset rc=0 in mdt_lock_objects_in_linkea
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 914e603656369c6e20627dc75a8f400af873234e

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch http://review.whamcloud.com/16131/
Subject: LU-7059 mdt: reset rc=0 in mdt_lock_objects_in_linkea
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 0ab2b5f93442f6c4844fadcbca981646624f6474

[Joseph Gmitter (Inactive)]

Landed for 2.8.