[Help] Explanation of releasing space  [SOLVED]

TFSS (TerraMaster File System Snapshot) is a disaster recovery tool developed based on the BTRFS file system. By taking advantage of the characteristics of the file system to take a snapshot of the entire file system of the TNAS device, it can avoid data loss due to wrong operations or ransomware attacks.
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rfbjr
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[Help] Explanation of releasing space

Post by rfbjr »

Image
(File Snapshot is run every day)
Can someone explain this? So, if I configure file system snapshots to be kept for 10 days and one day I delete for example a 10gig file.
So what happens after the 10 days since I deleted the file? Does the space that the 10gig file took up get released?

But If I manually delete a snapshot before the 10 day aging, that 10gig file space will be released then?

The message explains the manual delete, but not the aging out of snapshot files.

**This is TOS 7 v403
F6-424 & F4-425 Plus at 7.0.0777
F4-424 Pro also at 7.0.0777
D4-320
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TMzethar
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Joined: 27 Oct 2020, 16:43

Re: [Help] Explanation of releasing space  [SOLVED]

Post by TMzethar »

For the deleted file, as long as there is at least one snapshot that captured it before deletion, it will still occupy space waiting for recovery. Conversely, if all related snapshots are deleted, the space occupied by the file will be released, regardless of whether it was done manually or automatically.
Based on the usage scenario you described, snapshots of this 10GB file can exist for a maximum of 10 days, after which they will be completely deleted and no longer occupy space.
To contact our team, please send email to following addresses, remember to replace (at) with @:
Technical team: support(at)terra-master.com (for technical support)
Service team: service(at)terra-master.com (for purchasing, return, replacement, RMA service)
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rfbjr
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Re: [Help] Explanation of releasing space

Post by rfbjr »

TMzethar wrote: 05 Feb 2026, 06:40 For the deleted file, as long as there is at least one snapshot that captured it before deletion, it will still occupy space waiting for recovery. Conversely, if all related snapshots are deleted, the space occupied by the file will be released, regardless of whether it was done manually or automatically.
Based on the usage scenario you described, snapshots of this 10GB file can exist for a maximum of 10 days, after which they will be completely deleted and no longer occupy space.
Perfect! Thank you
F6-424 & F4-425 Plus at 7.0.0777
F4-424 Pro also at 7.0.0777
D4-320
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