#Btrfs le ha ahorrado a #Meta miles de millones de dólares en costes

#Linux #file #system (vs #ext4 )

https://www.muylinux.com/2025/08/12/btrfs-infraestructura-meta-facebook/

Hey #btrfs nerds, what's the current best-practice strategy for migrating to a new (single) drive, without modifying the old drive, which will then be removed. Is it using seeding volumes?

https://btrfs.readthedocs.io/en/latest/Seeding-device.html

My media storage is using #BTRFS. And there is not that much movement here. Sometimes I add 2 or 3 things, sometimes I remove 2 or 3 things. But from time to time, #rsnapshot (so #rsync) decides that the whole set of files has changed and should be copied from scratch. This also happens on the "application" storage (still using BTRFS) where things only change when I update applications.

Source and destination storage all being different, I don't expect the media to be faulty. So I wonder if BTRFS doesn't do backend stuff (self-healing, defrag, etc) that fools rsync into thinking the content has changed.

#Linux #btrfs
OH LE BOULET.
Je viens de me rendre compte que j'avais oublié de mettre le répertoire de torrents de mon NAS en NOCOW. Duh.

Correction:
- fermer le client torrent.
- créer un répertoire vide, le mettre en NOCOW (chattr +C nouveau)
- copier l'ancien répertoire dedans (cp -r -v --reflink=never ancien nouveau) (sinon ça gardera les blocs de données qui sont déjà en mode CoW)

I do think that one thing getting glossed over in the bcachefs kerfuffle is that the guy is probably right about #btrfs having remaining reliablity problems - granted I didn't go digging that hard, but I haven't found anywhere where the ~5 year old papers on btrfs becoming unrecoverable in many more underlying data corruption situations than ext4 was addressed, and certainly not with "many of those cases have been fixed."

Создаём образ RDP-клиента для запуска с USB-флешки (часть 3)

В части 1 и части 2 мы подробно рассмотрели процесс создания загрузочного образа RDP-клиента на базе Debian 12. В результате у нас получился готовый к использованию образ, который можно записать на USB-носитель или установить на жёсткий диск. В некоторых случаях требуется уменьшить размер виртуального диска — не просто сжать образ, а физически уменьшить объём виртуального qcow2 -диска. Самый надёжный способ — создать новый образ с меньшим диском и перенести туда систему .

https://habr.com/ru/articles/935484/

Yep, this hit me back on 21 July on #Fedora. On the way out the door for work, laptop took too long to shut down, so I held the power button for 5 seconds. Got to work and it wouldn't boot. Thankfully, the CachyOS forums had an easy fix:
:run/initramfs# btrfs rescue zero-log /dev/nvme0n1p3
#Linux #btrfs
https://www.phoronix.com/news/Btrfs-Log-Tree-Corruption-Fix

Chat, should I try reformatting my main partition to use #ZFS or #Btrfs?

I'm currently using ext4 (ik, ik) on #NixOS.

Wrzuciłem do #Gentoo sys-kernel/gentoo-kernel{,-bin}-6.15.9-r1 z łatką na #btrfs, która naprawia ryzyko uszkodzenia systemu plików przy zaniku zasilania. Podziękowania dla Fedory za przystosowanie jej do 6.15.x!

https://lore.kernel.org/linux-btrfs/5c89804b07e3681c3a9bc50bf1d63d9ce77d7020.1753902432.git.fdmanana@suse.com/

Just migrated my #Linux LVM-based #NAS to #ZFS based. So much easier setup. I don't think I'm ever going back.

Introducing #container‑snap. It's a prototype plugin for atomic OS updates via #OCI images! It integrates with #openSUSE’s tukit and #Podman’s #Btrfs driver to boot your host from a container image. Check out this #oSC25 talk. https://youtu.be/u_9BoxsHQI8?si=l1TqCBmHQWidDc-x

OK, riddle me this, #Linux (specifically #ArchLinux) fans.

You can use #ZFS and #btrfs on root to create snapshots before updating the OS. But you can't snapshot EFI, because that's on a separate FAT32 partition.

So what happens if you run an update (pacman -Syu in this case) that includes a kernel update, and something goes wrong? The version of the kernel in the EFI partition will be newer than the modules in the snapshotted /usr/lib/modules. That's surely going to cause an issue, right?

From memory (it's been over 15 years), Gentoo can have multiple versions of the same kernel installed at once. But Arch only allows one version of any package at one time.

Eso de emplear tiempo en el mantenimiento del sistema operativo no es para mí.

Why OpenSUSE Tumbleweed is the Best Rolling Linux Distro

https://www.youtube.com/watch?v=yuC6fZ-McGY

I guess it's time to finally decide (currently leaning towards 1)...

#nas #btrfs #zfs