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Posted to issues@ozone.apache.org by "Jyotirmoy Sinha (Jira)" <ji...@apache.org> on 2023/10/11 07:33:00 UTC

[jira] [Created] (HDDS-9431) [snapshot] Referenced and exclusive size not populated properly when snapshot is created after Trash deletion

Jyotirmoy Sinha created HDDS-9431:
-------------------------------------

             Summary: [snapshot] Referenced and exclusive size not populated properly when snapshot is created after Trash deletion
                 Key: HDDS-9431
                 URL: https://issues.apache.org/jira/browse/HDDS-9431
             Project: Apache Ozone
          Issue Type: Bug
          Components: Snapshot
            Reporter: Jyotirmoy Sinha


Steps :
 # Create vol/buck/key
 # Create snapshot snap1
 # Delete key - moved inside .Trash
 # Create snapshot snap2
 # Delete .Trash of above bucket
 # Create snapshot snap3
 # Delete snapshot snap2
 # Check referenced and exclusive size of snapshots

Expected behaviour - Referenced size of snapshot snap3 should be 0, since it holds no keys. Exclusive size of snap1 should be equal to key size since its the only snapshot that holds the key.

Observed behaviour - Referenced size of snapshot snap3 == snap1. Exclusive size of snapshot snap1 = 0

Snapshot file contents -
{code:java}
# ozone fs -ls -R ofs://ozone1/vol2/buck2/.snapshot
drwxrwxrwx   - om om        668 2023-10-11 07:21 ofs://ozone1/vol2/buck2/.snapshot/snap1
-rw-rw-rw-   3 om om        668 2023-10-11 07:20 ofs://ozone1/vol2/buck2/.snapshot/snap1/key1
drwxrwxrwx   - om om        668 2023-10-11 07:23 ofs://ozone1/vol2/buck2/.snapshot/snap3 {code}
Snapshot info -
{code:java}
# ozone sh snapshot ls vol2/buck2
[ {
  "volumeName" : "vol2",
  "bucketName" : "buck2",
  "name" : "snap1",
  "creationTime" : 1697008874359,
  "snapshotStatus" : "SNAPSHOT_ACTIVE",
  "snapshotId" : "5ad6b758-d293-498d-9fdc-a5697853da65",
  "snapshotPath" : "vol2/buck2",
  "checkpointDir" : "-5ad6b758-d293-498d-9fdc-a5697853da65",
  "referencedSize" : 668,
  "referencedReplicatedSize" : 2004,
  "exclusiveSize" : 0,
  "exclusiveReplicatedSize" : 0
}, {
  "volumeName" : "vol2",
  "bucketName" : "buck2",
  "name" : "snap3",
  "creationTime" : 1697009036987,
  "snapshotStatus" : "SNAPSHOT_ACTIVE",
  "snapshotId" : "b9521b9c-0f6d-4208-993c-af66caf90c7b",
  "snapshotPath" : "vol2/buck2",
  "checkpointDir" : "-b9521b9c-0f6d-4208-993c-af66caf90c7b",
  "referencedSize" : 668,
  "referencedReplicatedSize" : 2004,
  "exclusiveSize" : 0,
  "exclusiveReplicatedSize" : 0
} ] {code}



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