Comment by fourfour3
Do Synology actually use the multi-device options of btrfs, or are they using linux softraid + lvm underneath?
I know Synology Hybrid RAID is a clever use of LVM + MD raid, for example.
Do Synology actually use the multi-device options of btrfs, or are they using linux softraid + lvm underneath?
I know Synology Hybrid RAID is a clever use of LVM + MD raid, for example.
I believe Synology runs btrfs on top of regular mdraid + lvm, possibly with patches to let btrfs checksum failures reach into the underlying layers to find the right data to recover.
Related blog post: https://daltondur.st/syno_btrfs_1/