mrflop

Renaming fopen64 to intercept library calls feels like a brittle hack masquerading as "sandboxing." Why not just upstream this hardware support to nvtop instead of fragmenting the ecosystem?

That's a fair point, and it's a known challenge with file-based backups on systems like Postgres. That said, some backup systems implement chunk-level deduplication and content-addressable storage, which can significantly reduce the amount of data actually transferred, even when large files change slightly.

For example, tools like Plakar (contributor here) split data into smaller immutable chunks and only store the modified ones, avoiding full re-uploads of 1GB files when only a few bytes change.

Thank you for mentioning it (Plakar here).

We are doing our best to complete existing solutions :)

Time to short Nvidia ?

Great insights! Has anyone here switched to a SaaS runner and seen real gains in speed or reliability?

I read the poem three times and still can’t decide if it’s about a cat or a cat about cats.

Yes, both ptar and plakar. If you want to read more about the internal: https://www.plakar.io/posts/2025-04-29/kloset-the-immutable-...

That’s basically one of the reasons that led us to build Plakar.

S3 buckets can just vanish for lots of reasons. With AWS’s shared-responsibility model, you’re the one who has to back up and protect your data not AWS.

AWS Backup can get really pricey since you pay GB-month for every single restore point. Plakar only charges once for the initial backup and then for the small deltas on whatever cheap storage you pick.

Also, AWS Backup locks your snapshots into AWS vaults, whereas Plakar lets you push and pull backups to any backend—local disk, S3, another cloud, on-prem, etc.

Yes Plakar works much like Restic and Kopia: it takes content-addressed, encrypted and deduplicated snapshots and offers efficient incremental backups via a simple CLI. Under the hood, its Kloset engine splits data into encrypted, compressed chunks. Plakar main strengths:

UI: In addition to a simple Unix-style CLI, Plakar provides an web interface and API for monitoring, browsing snapshots

Data-agnostic snapshots: Plakar’s Kloset engine captures any structured data—filesystems, databases, applications—not just files, by organizing them into self-describing snapshots

Source/target decoupling: You can back up from one system (e.g. a local filesystem) and restore to another (e.g. an S3 bucket) using pluggable source and target connectors

Universal storage backends: Storage connectors let you persist encrypted, compressed chunks to local filesystems, SFTP servers or S3-compatible object stores (and more)—all via a unified interface

Extreme scale with low RAM: A virtual filesystem with lazy loading and backpressure-aware parallelism keeps memory use minimal, even on very large datasets

Network- and egress-optimized: Advanced client-side deduplication and compression dramatically cut storage and network transfer costs—ideal for inter-cloud or cross-provider migrations

Online maintenance: you don't need to stop you backup to free some space

ptar...

But it works only for Windows, right?

Not exactly, if WIM is a complete snapshot of a Windows disk ready to be restored on an identical machine, .ptar is a self-contained capsule holding successive, encrypted, deduplicated, and verifiable versions of any dataset, portable and usable across different environments.