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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"After upgrade to 4.22.0.0 snapshot.delta.max not respected","articleBody":"### problem\n\nI upgraded to 4.22.0.0 on Nov 11.  I have many volumes that are set to 3 snapshots max stored by my users.\n\nI noticed that all snapshots since Nov 11 (all existing and new ones) seem to create a massive chain of snapshots.\nI had 60+ days snapshot files on the disk for every volume with daily snapshots, while the snapshot.delta.max is only  set to 7. And snapshot policy is 3 snapshots only. \n\nIt seems the full snapshot before Nov 11 in my case was the last full snapshot. After that there is no more full snapshots, only incremental snapshots.  \n\nWhat I see in database: \n\nin snapshots table: \n\n\u003cimg width=\"1350\" height=\"348\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/46be9729-75d2-4898-9afb-b7e2af1d86c7\" /\u003e\n\nAnd in snapshot_store_ref (have hidden rows in between - but they all show as \"Hidden\"\n\n\u003cimg width=\"1341\" height=\"480\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/9d6c7cca-fc07-4a29-9003-03814c71e55c\" /\u003e\n\n\nPlease help! I cannot even clear my storage which is now hit 95% used capacity and about to blow up!! Its tens of extra terabytes of data!! with no way to clear it other than deleting all snapshots which is a huge problem for users... \n\n\n### versions\n\nACS 4.22.0\nXCP-NG 8.2\n\n### The steps to reproduce the bug\n\n1.Upgraded from 4.19 .1 to 4.22\n2.\n3.\n...\n\n\n### What to do about it?\n\nIdentify what is causing the snapshot.delta.max to not be respected. ","author":{"url":"https://github.com/nxsbi","@type":"Person","name":"nxsbi"},"datePublished":"2026-01-27T07:12:27.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/12524/cloudstack/issues/12524"}