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Question from a filesystem n00b: what is the advantage of Bcachefs relative to standard filesystems like Ext4?
by gautamcgoel 4y ago
Question from a filesystem n00b: what is the advantage of Bcachefs relative to standard filesystems like Ext4?
- LinAGKar 4y agoIt's got about the same features as btrfs, and other new-gen filesystems like ZFS, APFS and ReFS, such as: - Copy-on-write - RAID 0/1/5/6 equivalents - Subvolumes - Snapshots - Transparent compression - Reflinks - Metadata and data checksuming - Replication - Bitrot protection (when used with RAID and checksuming) And it's supposed to be more though through and well designed than btrfs.
- Shish2k 4y agoI’m currently using a few different filesystems for different use-cases, and looking forward to bcachefs because (as I understand it) it covers some use-cases that I’ve been dreaming of for ages and not yet found any solution for: - raid5/6 with odd-sized disks (btrfs does raid1 with odd-sized disks, mdadm & zfs do raid5/6 with equally-sized disks) - great for a homelab server that I upgrade ship-of-theseus style rather than the enterprise “buy a whole new server with whole new larger disks in one go” - SSD as a cache integrated with HDD RAID (right now I’m using bcache + mdadm + ext4 for this usecase; having the filesystem coordinate all three of those layers feels more elegant and efficient) - Different settings for different directories in the same filesystem (my super-important documents get RAID1 across 4 drives, my blu-ray rips that I can just re-rip if I lose them get RAID0, everything else gets RAID5)