A year ago I set up Ubuntu server with 3 ZFS pools on my server, normally I don’t make copies of very large files but today I was making a copy of a ~30GB directory and I saw in rsync that the transfer doesn’t exceed 3mb/s (cp is also very slow).

What is the best file system that “just works”? I’m thinking of migrating everything to ext4

EDIT: I really like the automatic pool recovery feature in ZFS, has saved me from 1 hard drive failure so far

    • Fisch@lemmy.mlEnglish
      14·
      9 months ago

      I use BTRFS on everything too nowadays. The thing that made me switch everything to BTRFS was filesystem compression.

        • Fisch@lemmy.mlEnglish
          2·
          9 months ago

          I use zstd too, didn’t specifiy a level tho, so it’s just using the default. I only use like ⅔ of the disk space I used before and I don’t feel any difference in performance at all.

    • atzanteol@sh.itjust.worksEnglish
      6·
      9 months ago

      FWIW lvm can give you snapshots and other features. And mdadm can be used for a raid. All very robust tools.

    • TCB13@lemmy.worldEnglish
      85·
      9 months ago

      Yes and BTRFS, unlike Ext4, will not go corrupt on the first power outage of slight hardware failure.

      • Possibly linux@lemmy.zipEnglish
        3·
        9 months ago

        I’ve run btrfs for years and never had a issue. They one time my system wouldn’t boot it was due to a bad drive. I just swapped the drive and rebalanced and I was back up and running in less than a half an hour.

      • devfuuu@lemmy.worldEnglish
        2·
        9 months ago

        Corruption on power only regularly happened to me on xfs a few years ago. That made me swear to never use that fs ever again. Never seen it on my ext4fs systems which are all I have for years in multiple computers.

        • TCB13@lemmy.worldEnglish
          64·
          9 months ago

          I’m confused with your answer. BTRFS is good and reliable. Ext4 gets fucked at the slightest issue.

          • SayCyberOnceMore@feddit.ukEnglish
            1·
            9 months ago

            Never had an issue with EXT4.

            Had a problem on a NAS where BTRFS was taking “too long” for systemD to check it, so just didn’t mount it… bit of config tweaking and all is well again.

            I use EXT* and BTRFS where ever I can because I can manipulate it with standard tools (inc gparted).

            I have 1 LVM system which was interesting, but I wouldn’t do it that way in the future (used to add drives on a media PC)

            And as for ZFS … I’d say it’s very similar to BTRFS, but just slightly too complex on Linux with all the licensing issues, etc. so I just can’t be bothered with it.

            As a throw-away comment, I’d say ZFS is used by TrusNAS (not a problem, just sayin’…) and… that’s about it??

            As to the OPs original question, I agree with the others here… something’s not right there, but it’s probably not the filesystem.

          • Eideen@lemmy.worldEnglish
            11·
            9 months ago

            Yes both BTRFS and Ext4 are vulnerable to unplanned powerloss when writes are in flight. Commonly knows as a write hole.

            For BTRFS since it use of Copy of Write, it is more vulnerable. As metadata needs to be updated and more. Ext4 does not have CoW.

            • Atemu@lemmy.mlEnglish
              3·
              9 months ago

              Ext4 does not have CoW.

              That’s the only true part of this comment.

              As for everything else:

              Ext4 uses journaling to ensure consistency.

              btrfs’ CoW makes it resistant to that issue by its nature; writes go elsewhere anyways, so you can delay the “commit” until everything is truly written and only then update the metadata (using a similar scheme again).

              Please read https://en.wikipedia.org/wiki/Journaling_file_system.

            • TCB13@lemmy.worldEnglish
              1·
              9 months ago

              For BTRFS since it use of Copy of Write, it is more vulnerable. As metadata needs to be updated and more. Ext4 does not have CoW.

              This is where theory and practice diverge and I bet a lot of people here will essentially have the same experience I have. I will never run an Ext filesystem again, not ever as I got burned multiple times both at home/homelab and at the datacenter with Ext shenanigans. BTRFS, ZFS, XFS all far superior and more reliable.