adoroszlai commented on pull request #1104:
URL: https://github.com/apache/hadoop-ozone/pull/1104#issuecomment-654620400
> > > Question: Now when list at the root "/" with ofs filesystem, for link
buckets they will be displayed as a new entry of only resolved buckets will be
shown. What should be the behavior here.
> >
> >
> > I'm afraid I don't understand the question. Can you please give an
example?
>
> when user perform `ls` on volume/bucket, which has below buckets. It will
show only resolved buckets or all the buckets? Or it follows normal ls
semantics?
>
> if it has mounted buckets
>
> b1 -> b2
> b2
> b4 -> b5
>
> what should be the behavior of ls in this case?
Thanks for the clarification. `ls` on volume shows buckets and links in
that volume, will not resolve links. `ls` on bucket shows the keys in that
bucket. `ls` on link shows keys in the bucket that the link points to.
Example created by the robot test:
```
$ ozone fs -ls ofs://om/63433-target/
Found 7 items
drwxrwxrwx - hadoop hadoop 0 2020-07-07 05:50
ofs://om/63433-target/bucket3
drwxrwxrwx - hadoop hadoop 0 2020-07-07 05:49
ofs://om/63433-target/dangling-link
drwxrwxrwx - hadoop hadoop 0 2020-07-07 05:50
ofs://om/63433-target/link2
drwxrwxrwx - hadoop hadoop 0 2020-07-07 05:51
ofs://om/63433-target/link3
drwxrwxrwx - hadoop hadoop 0 2020-07-07 05:51
ofs://om/63433-target/loop1
drwxrwxrwx - hadoop hadoop 0 2020-07-07 05:51
ofs://om/63433-target/loop2
drwxrwxrwx - hadoop hadoop 0 2020-07-07 05:51
ofs://om/63433-target/loop3
```
```
$ ozone fs -ls ofs://om/63433-source/bucket1
Found 2 items
-rw-rw-rw- 3 hadoop hadoop 671 2020-07-07 05:49
ofs://om/63433-source/bucket1/key1
-rw-rw-rw- 3 hadoop hadoop 372 2020-07-07 05:51
ofs://om/63433-source/bucket1/key3
```
```
$ ozone fs -ls ofs://om/63433-target/link3
Found 2 items
-rw-rw-rw- 3 hadoop hadoop 671 2020-07-07 05:49
ofs://om/63433-target/link3/key1
-rw-rw-rw- 3 hadoop hadoop 372 2020-07-07 05:51
ofs://om/63433-target/link3/key3
```
```
$ ozone sh bucket info /63433-target/link3
{
"volumeName" : "63433-target",
"name" : "link3",
...
"sourceVolume" : "63433-source",
"sourceBucket" : "bucket1"
}
```
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