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kimono-koans
httm
Rust2022–2024
kimono-koans / httm

httm

Interactive, file-level Time Machine-like tool for ZFS/btrfs/nilfs2 (and even Time Machine and Restic backups!)

Command LineSystems & InfrastructureSelf-hosted
Explore on GitHubRead Hacker News discussions
7Distinct people
29Mentions
1Explicit recommenders
1.7KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Interactive, file-level Time Machine-like tool for ZFS/btrfs/nilfs2 (and even Time Machine and Restic backups!)

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

From the help and man page[0]: --roll-forward="snap_name" traditionally 'zfs rollback' is a destructive operation, whereas httm roll-forward is non-destructive. httm will copy…

mustache_kimono used a recommendation phrase. One indexed comment matches. This is a phrase match, not a verdict.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 5:05:26 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by month29 dated mentions

Observed mentions: 2022-03-08 03:57:35 UTC to 2024-07-23 11:53:14 UTC.

012342022-03-01 00:00:00 UTC to 2022-04-01 00:00:00 UTC (exclusive): 3 mentions; 1 submissions, 2 commentsMar 20222022-04-01 00:00:00 UTC to 2022-05-01 00:00:00 UTC (exclusive): 3 mentions; 2 submissions, 1 comments2022-05-01 00:00:00 UTC to 2022-06-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2022-06-01 00:00:00 UTC to 2022-07-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2022-07-01 00:00:00 UTC to 2022-08-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2022-08-01 00:00:00 UTC to 2022-09-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2022-09-01 00:00:00 UTC to 2022-10-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2022-10-01 00:00:00 UTC to 2022-11-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments2022-11-01 00:00:00 UTC to 2022-12-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2022-12-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2023-01-01 00:00:00 UTC to 2023-02-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2023-02-01 00:00:00 UTC to 2023-03-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2023-03-01 00:00:00 UTC to 2023-04-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2023-04-01 00:00:00 UTC to 2023-05-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2023-05-01 00:00:00 UTC to 2023-06-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 commentsMay 20232023-06-01 00:00:00 UTC to 2023-07-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2023-07-01 00:00:00 UTC to 2023-08-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2023-08-01 00:00:00 UTC to 2023-09-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2023-09-01 00:00:00 UTC to 2023-10-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2023-10-01 00:00:00 UTC to 2023-11-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2023-11-01 00:00:00 UTC to 2023-12-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2023-12-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-01-01 00:00:00 UTC to 2024-02-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-02-01 00:00:00 UTC to 2024-03-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-03-01 00:00:00 UTC to 2024-04-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-04-01 00:00:00 UTC to 2024-05-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2024-05-01 00:00:00 UTC to 2024-06-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-06-01 00:00:00 UTC to 2024-07-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-07-01 00:00:00 UTC to 2024-08-01 00:00:00 UTC (exclusive): 3 mentions; 1 submissions, 2 commentsJul 2024

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Mar 20222022-03-01 00:00:00 UTC2022-04-01 00:00:00 UTC312
Apr 20222022-04-01 00:00:00 UTC2022-05-01 00:00:00 UTC321
May 20222022-05-01 00:00:00 UTC2022-06-01 00:00:00 UTC101
Jun 20222022-06-01 00:00:00 UTC2022-07-01 00:00:00 UTC000
Jul 20222022-07-01 00:00:00 UTC2022-08-01 00:00:00 UTC101
Aug 20222022-08-01 00:00:00 UTC2022-09-01 00:00:00 UTC101
Sep 20222022-09-01 00:00:00 UTC2022-10-01 00:00:00 UTC101
Oct 20222022-10-01 00:00:00 UTC2022-11-01 00:00:00 UTC404
Nov 20222022-11-01 00:00:00 UTC2022-12-01 00:00:00 UTC202
Dec 20222022-12-01 00:00:00 UTC2023-01-01 00:00:00 UTC000
Jan 20232023-01-01 00:00:00 UTC2023-02-01 00:00:00 UTC000
Feb 20232023-02-01 00:00:00 UTC2023-03-01 00:00:00 UTC000
Mar 20232023-03-01 00:00:00 UTC2023-04-01 00:00:00 UTC000
Apr 20232023-04-01 00:00:00 UTC2023-05-01 00:00:00 UTC101
May 20232023-05-01 00:00:00 UTC2023-06-01 00:00:00 UTC202
Jun 20232023-06-01 00:00:00 UTC2023-07-01 00:00:00 UTC000
Jul 20232023-07-01 00:00:00 UTC2023-08-01 00:00:00 UTC101
Aug 20232023-08-01 00:00:00 UTC2023-09-01 00:00:00 UTC202
Sep 20232023-09-01 00:00:00 UTC2023-10-01 00:00:00 UTC202
Oct 20232023-10-01 00:00:00 UTC2023-11-01 00:00:00 UTC000
Nov 20232023-11-01 00:00:00 UTC2023-12-01 00:00:00 UTC101
Dec 20232023-12-01 00:00:00 UTC2024-01-01 00:00:00 UTC000
Jan 20242024-01-01 00:00:00 UTC2024-02-01 00:00:00 UTC000
Feb 20242024-02-01 00:00:00 UTC2024-03-01 00:00:00 UTC000
Mar 20242024-03-01 00:00:00 UTC2024-04-01 00:00:00 UTC000
Apr 20242024-04-01 00:00:00 UTC2024-05-01 00:00:00 UTC101
May 20242024-05-01 00:00:00 UTC2024-06-01 00:00:00 UTC000
Jun 20242024-06-01 00:00:00 UTC2024-07-01 00:00:00 UTC000
Jul 20242024-07-01 00:00:00 UTC2024-08-01 00:00:00 UTC312

What Hacker News says

1 sources
mustache_kimono·Apr 14, 2024
Author here. Surprised as any one this on the front page of HN. > I don’t understand the use case. You go through the trouble of generating checksums when copying videos, but don’t want to regenerate the checksums when modifying the metadata? Appreciate the Q, but I suppose I really don't understand it. Could be the hour? I don't want to regenerate checksums once I know the underlying bitstream checksums are correct. I want to know the audio/video/whatever is the same as the day I received it, and I want to perform the exact same check to confirm. If I change the metadata, and I need to regenerate a checksum, I don't know that. > If you are this concerned about data corruption why not check the metadata also? One should of course. Please use ZFS, etc. There is perhaps no greater ZFS fan than me. See: https://github.com/kimono-koans
Read the rest
/httm But now imagine rewriting a stream to a different container. For instance, MP4 to MKV, or ALAC to FLAC. Wouldn't it be nice to know the bitstreams are the same?
In Dano is a wrapper for FFmpeg that checksums the internal file streams

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