Prune does not remove all unneeded data

[Radioactive-Man]

Output of restic version

c:\SW_DEV\ResticBackup\restic>restic_x64.exe -r Z:\HDD\Restic_Repo version
restic 0.6.1 (v0.6.1-0-g3ae9be9)
compiled with go1.8.3 on windows/amd64

How did you start restic exactly? (Include the complete command line)

c:\SW_DEV\ResticBackup\restic>restic_x64.exe -r Z:\HDD\Restic_Repo check
Create exclusive lock for repository
Load indexes
Check all packs
pack 03f8006fd6065fc913ea6e9ced25dab939ffa63a0c7611cf56d2662c41883a67: not referenced in any index
pack 0ce57e56dc4c5cdc7c3790c9a376fdc64eec625db0136b8977d3714573600589: not referenced in any index
pack 1cf0d99f4f1c71f308d5e443b0cbe1f061f0897390f7a6840affa5cc7b5c4a9b: not referenced in any index
pack 305a5c0afb1361daaac5a887bab65a4f12b6424bf218b7fc4ccebb41a847fe8e: not referenced in any index
pack 5362055dd16276c712c8eb28bec591b6f4e07edc1d2b902e2faaca6c140e25bc: not referenced in any index
pack 7045584beeab6e4c5547902cb29ab21831c993a699c284fdc541c454f59c3751: not referenced in any index
pack 8fa90f3a7c00f73139919283bd3ba670df9c9bf58cfd80cd0cd8aff644d7f53f: not referenced in any index
pack 91d245b9a2ffff3171ca7cce1288073dc6b454880dd3e7fbec352b517d3baa7c: not referenced in any index
pack 9f4e00f91908bfe9b0b6152c20ea5e0acdbdf4e73639fadc28ee1d36fe79c240: not referenced in any index
pack a3b22e0cd2d1670e850068d4577ff38647a297bf1fc3424cde08943da77dde3e: not referenced in any index
pack b798f9660d9f9e1112aeb5dfa322ffdd9ff896e585dc5c38220dd126a9489825: not referenced in any index
pack c71297aff8f619fa3ac124d60840ba1b4bd39cd19e9194405d16bf9f875df024: not referenced in any index
Check snapshots, trees and blobs
Fatal: repository contains errors

c:\SW_DEV\ResticBackup\restic>restic_x64.exe -r Z:\HDD\Restic_Repo prune
counting files in repo
building new index for repo
unable to list pack 03f8006f: header is larger than file
unable to list pack 0ce57e56: header is larger than file
unable to list pack 1cf0d99f: header is larger than file
unable to list pack 305a5c0a: header is larger than file
unable to list pack 5362055d: header is larger than file
unable to list pack 7045584b: header is larger than file
unable to list pack 8fa90f3a: header is larger than file
unable to list pack 91d245b9: header is larger than file
unable to list pack 9f4e00f9: header is larger than file
unable to list pack a3b22e0c: header is larger than file
unable to list pack b798f966: header is larger than file
unable to list pack c71297af: header is larger than file
[0:35] 100.00%  14071 / 14071 packs
repository contains 14059 packs (71713 blobs) with 65.955 GiB bytes
processed 71713 blobs: 0 duplicate blobs, 0B duplicate
load all snapshots
find data that is still in use for 3 snapshots
[0:06] 100.00%  3 / 3 snapshots
found 71713 of 71713 data blobs still in use, removing 0 blobs
will delete 0 packs and rewrite 0 packs, this frees 0B
counting files in repo
unable to list pack 03f8006f: header is larger than file
unable to list pack 0ce57e56: header is larger than file
unable to list pack 1cf0d99f: header is larger than file
unable to list pack 305a5c0a: header is larger than file
unable to list pack 5362055d: header is larger than file
unable to list pack 7045584b: header is larger than file
unable to list pack 8fa90f3a: header is larger than file
unable to list pack 91d245b9: header is larger than file
unable to list pack 9f4e00f9: header is larger than file
unable to list pack a3b22e0c: header is larger than file
unable to list pack b798f966: header is larger than file
unable to list pack c71297af: header is larger than file
[1:13] 100.00%  14071 / 14071 packs
finding old index files
saved new index as c88b50a4
remove 1 old index files
done

What backend/server/service did you use?

Backup is stored on a CIFS share

Expected behavior

Prune should delete the unneeded files

Actual behavior

Prune does not delete the files

Do you have any idea what may have caused this?

I have killed (closed the command line window) the backup while it was running

[fd0]

Thanks for raising this issue. What happens here is that restic got terminated while writing pack files, so the header (at the end of the file) wasn't written successfully. I agree that prune should remove those files.

Please know that this is cosmetic only, no data was/is at risk. It's a bit annoying since the files still consume space, but that's about it.

[Radioactive-Man]

Yes for me this is fine I can delete the files and it is OK for me, so it is up to you how to handle this issue. Once more thanks for this great backup program.