[LU-19999] TCU: dir's mode changed after restore

• Type: Technical task
• Resolution: Unresolved
• Priority: Medium
• Severity: 3
• Assignee: Qian Yingjin
• Reporter: Qian Yingjin

Description

mkdir aaa, it has permission like "drwxr-xr-x 2 root root 4096 Mar 12 23:22 aaa"

[root@trevis-90vm1 lustre]# ls
[root@trevis-90vm1 lustre]# ls .Trash
[root@trevis-90vm1 lustre]# mkdir aaa
[root@trevis-90vm1 lustre]# ls -al
total 12
drwxr-xr-x  4 root root 4096 Mar 12 23:22 .
drwxr-xr-x. 4 root root 4096 Feb 25 22:32 ..
drwxr-xr-x  2 root root 4096 Mar 12 23:22 aaa
[root@trevis-90vm1 lustre]# touch aaa/foo
[root@trevis-90vm1 lustre]# echo foo> aaa/foo
[root@trevis-90vm1 lustre]# cat aaa/foo
foo
[root@trevis-90vm1 lustre]# ls -al aaa
total 12
drwxr-xr-x 2 root root 4096 Mar 12 23:23 .
drwxr-xr-x 4 root root 4096 Mar 12 23:22 ..
-rw-r--r-- 1 root root    4 Mar 12 23:23 foo

rm dir

[root@trevis-90vm1 lustre]# rm -r aaa/
rm: descend into directory 'aaa/'? yes
rm: remove regular file 'aaa/foo'? yes
rm: remove directory 'aaa/'? yes
[root@trevis-90vm1 lustre]# ls
[root@trevis-90vm1 lustre]# ls -al .Trash
total 12
d--------- 3 root root 4096 Mar 12 22:58 .
drwxr-xr-x 3 root root 4096 Mar 12 23:23 ..
d--------- 2 root root 4096 Mar 12 23:23 aaa
[root@trevis-90vm1 lustre]# ls -al .Trash/aaa/
total 12
d--------- 2 root root 4096 Mar 12 23:23 .
d--------- 3 root root 4096 Mar 12 22:58 ..
-rw-r--r-- 1 root root    4 Mar 12 23:23 foo

retrieve dir aaa back to its original path, we can see its permission changed to 'd--------- 2 root root 4096 Mar 12 23:23 aaa'

[root@trevis-90vm1 lustre]# lfs trash unrm /mnt/lustre/.Trash/aaa
[root@trevis-90vm1 lustre]# ls -al
total 12
drwxr-xr-x  4 root root 4096 Mar 12 23:25 .
drwxr-xr-x. 4 root root 4096 Feb 25 22:32 ..
d---------  2 root root 4096 Mar 12 23:23 aaa

try to read/write to this dir and file under it seems fine

[root@trevis-90vm1 lustre]# ls -al aaa/
total 12
d--------- 2 root root 4096 Mar 12 23:23 .
drwxr-xr-x 4 root root 4096 Mar 12 23:25 ..
-rw-r--r-- 1 root root    4 Mar 12 23:23 foo
[root@trevis-90vm1 lustre]# cat aaa/foo 
foo
[root@trevis-90vm1 lustre]# echo foo2 >> aaa/foo 
[root@trevis-90vm1 lustre]# cat aaa/foo 
foo
foo2
[root@trevis-90vm1 lustre]# touch aaa/foo-2
[root@trevis-90vm1 lustre]# mkdir -p aaa/ccc
[root@trevis-90vm1 lustre]# ls -al
total 12
drwxr-xr-x  4 root root 4096 Mar 12 23:25 .
drwxr-xr-x. 4 root root 4096 Feb 25 22:32 ..
d---------  3 root root 4096 Mar 12 23:27 aaa
[root@trevis-90vm1 lustre]# ls aaa/
a  ccc  foo  foo-2