2.5 Admins 297: Jraphics
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In episode 297 of 2.5 Admins, Joe, Jim, and Alan dive into a mix of technical deep dives and cultural commentary. The episode opens with a discussion on how Discourse discovered a massive storage inefficiency due to ext4's 65,536 hard link limit, leading to 276,000 copies of the same Jennifer Aniston GIF. They explore how hard links, while powerful for deduplication, can break backup systems when limits are exceeded, and discuss how different file systems like ZFS and bcachefs handle these limits. The conversation then shifts to the broader issue of digital age gating, using a real case where a teen's Discord account was hijacked after lying about her age—highlighting systemic failures in tech support and the lack of human oversight in automated systems. The hosts lament the decline of general-purpose computing, arguing that modern devices are increasingly appliance-like, with tightly locked-down hardware and software, from MacBooks to gaming consoles. They reflect on the loss of the 'computer as a customizable tool' era, the rise of specialized appliances, and the environmental and economic consequences of reduced hardware reuse. The episode concludes with a detailed technical deep dive into ZFS's `rewrite` command, explaining how it can update compression and checksums on existing data without full data migration, though with caveats around replication chains and snapshot management.
Hard links are powerful for deduplication but can hit filesystem limits (e.g., ext4’s 65,536 limit), breaking backups and requiring careful handling.
Modern computing is moving toward appliance-style devices with locked-down hardware (e.g., MacBooks, Steam Deck, consoles), reducing user customization and repairability.
Age-gating and automated support systems often fail users, especially minors, and require high-profile intervention (e.g., media coverage) to resolve.
ZFS’s `rewrite` command allows updating compression and checksums on existing data without full copy/move operations, but it can break replication chains.
General-purpose computing is becoming niche; the mainstream favors specialized, tightly defined devices, leading to increased e-waste and reduced hardware longevity.
Sponsor & Intro: The Late Night Linux Family
The episode begins with a patron thank-you and a plug for Patreon support, including access to ad-free episodes and early releases.
The 276,000 Copies of a GIF: A Hard Link Nightmare
“After the first 64K worth of files, the rest of the GIFs were just backed up as regular files the way they always had been.”
Age Gating and the Discord Support Nightmare
“There's no humans in this loop. There's no way to escalate this. There's no way to talk to anyone.”
The Death of General-Purpose Computing
“The idea of the everything box that you build for your workload... that's exactly the thing that was never going to be mainstream for humanity.”
Consoles, PCs, and the Blurred Line
A discussion on how modern consoles are essentially specialized PCs, and how companies like Valve and Apple are pushing toward locked-down, appliance-style computing.
“There's no humans in this loop. There's no way to escalate this. There's no way to talk to anyone.”
“The idea of the everything box that you build for your workload... that's exactly the thing that was never going to be mainstream for humanity.”
“After the first 64K worth of files, the rest of the GIFs were just backed up as regular files the way they always had been.”
Hosts
Joe
person
Jim
person
Alan
person
ZFS
other
Discourse
product
Discord
product
ext4
other
Apple
organization
Valve
organization
Jennifer Aniston
person
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