[HDDS-7513] [Snapshot] Support list snapshots using fs -ls

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.4.0
• Labels: pull-request-available
• Assignee: Christos Bisias
• Reporter: Siyao Meng
• Created: 18/Nov/22 14:21
• Updated: 11/Feb/23 04:43
• Resolved: 11/Feb/23 04:43

Description

We should support listing all snapshots under FileSystem list just like HDFS does (at least for FSO buckets, or LEGACY buckets when FSO is enabled):

HDFS behavior

$ hdfs dfsadmin -allowSnapshot /tmp/dir1
Allowing snapshot on /tmp/dir1 succeeded

$ hdfs dfs -createSnapshot /tmp/dir1
Created snapshot /tmp/dir1/.snapshot/s20221118-053456.558

$ hdfs dfs -createSnapshot /tmp/dir1 snap2
Created snapshot /tmp/dir1/.snapshot/snap2

$ hdfs dfs -ls /tmp/dir1/.snapshot/
Found 2 items
drwxr-xr-x   - om supergroup          0 2022-11-18 05:34 /tmp/dir1/.snapshot/s20221118-053456.558
drwxr-xr-x   - om supergroup          0 2022-11-18 14:30 /tmp/dir1/.snapshot/snap2

Issue Links

• links to: GitHub Pull Request #4134