[HDDS-7515] [snapshot] Ozone fs -ls on snapshot doesn't work for OBJECT_STORE

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.0
• Component/s: Ozone Manager
• Labels: ozone-snapshot
• Assignee: Swaminathan Balachandran
• Reporter: Soumitra Sulav
• Created: 18/Nov/22 14:55
• Updated: 15/Jun/23 21:19
• Resolved: 15/Jun/23 21:19

Description

As OBJECT_STORE layout type doesn't support fs ls API, currently listing .snapshot isn't supported.

### FILE_SYSTEM_OPTIMIZED
[root@ozs7b-2 ~]# ozone sh bucket info vol1/fsobuck
{
  "metadata" : { },
  "volumeName" : "vol1",
  "name" : "fsobuck",
  ..
  "bucketLayout" : "FILE_SYSTEM_OPTIMIZED",
  "owner" : "hdfs",
  "link" : false
}
[root@ozs7b-2 ~]# ozone sh key put vol1/fsobuck/key1 anaconda-ks.cfg
..
[root@ozs7b-2 ~]# ozone sh snapshot create vol1/fsobuck snap2
[root@ozs7b-2 ~]# ozone fs -ls ofs://ozone1/vol1/fsobuck/.snapshot/snap2
Found 1 items
-rw-rw-rw-   3 hdfs hdfs       3302 2022-11-18 14:47 ofs://ozone1/vol1/fsobuck/.snapshot/snap2/key1


### OBJECT_STORE
[root@ozs7b-2 ~]# ozone sh bucket info vol1/obsbuck
{
  "metadata" : { },
  "volumeName" : "vol1",
  "name" : "obsbuck",
   ..
  "bucketLayout" : "OBJECT_STORE",
  "owner" : "hdfs",
  "link" : false
}
[root@ozs7b-2 ~]# ozone sh key put vol1/obsbuck/key1 anaconda-ks.cfg
..

[root@ozs7b-2 ~]# ozone fs -ls ofs://ozone1/vol1/obsbuck/.snapshot/snap2
-ls: Bucket: obsbuck has layout: OBJECT_STORE, which does not support file system semantics. Bucket Layout must be FILE_SYSTEM_OPTIMIZED or LEGACY.

Also, we can't list it from the ozone sh key list as these keys aren't listed.

[root@ozs7b-2 ~]# ozone sh key list vol1/obsbuck
[ {
  "volumeName" : "vol1",
  "bucketName" : "obsbuck",
  "name" : "key1",
  "dataSize" : 3302,
  "creationTime" : "2022-11-18T14:47:56.761Z",
  "modificationTime" : "2022-11-18T14:47:59.528Z",
  "replicationConfig" : {
    "replicationFactor" : "THREE",
    "requiredNodes" : 3,
    "replicationType" : "RATIS"
  }
} ]