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Merging bcachefs

Merging bcachefs

Posted Jun 16, 2023 21:23 UTC (Fri) by zdzichu (subscriber, #17118)
Parent article: Merging bcachefs

Bcachefs came from bcache, which is solely focused on speeding up HDDs by using NVMe or SATA SSD as a cache layer. Is this functionality still relevant? Solid state drives are affordable in multi-TB range now.

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Merging bcachefs

Posted Jun 17, 2023 0:41 UTC (Sat) by flussence (guest, #85566) [Link]

It's definitely still relevant as long as storage devices on a single system can differ in latency/throughput by orders of magnitude. Whether it'll still be maintained is another question, but there's always the possibility of extending fscache+cachefilesd to support local filesystems if not.

Merging bcachefs

Posted Jun 17, 2023 7:03 UTC (Sat) by Kangie (guest, #161139) [Link]

Yes. I'm currently running an ~100TB bcachefs pool consisting of 90tb SAS spinning rust and 24tb SATA SSDs.

Any use case between 'wanting a decent CoW file system on a single disk / partition' to 'combining two disks in a desktop better than btrfs in a way that will be mainlined' and frankly anything short of true multi-tiered mass storage is where this is going to be most useful.

It's incredibly promising - better than btrfs with no CoW write hole and actually able to be mainlined unlike zfs. It's also possible to easily resize, unlike a running zfs system.

Seriously, exciting stuff all around.


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