Top all-time · #11376
May Durst
Personal blog · daltondur.stsecuritysystems
May Durst's personal blog at daltondur.st covers security and systems. Since 2020, 7 different Hacker News readers have linked it 7 times, most often “The Endless Conundrum of creating a secure PinePhone”. The last post was in 2024, but the archive is still widely read.
Too few sampled comments (5) to say how often HN recommends it.?
Why HN links it
HN readers cite this blog as the source on Synology's btrfs setup, which layers btrfs over LVM/dmraid and adds ZFS-like properties. Commenters also reference it for testing btrfs reliability.
Summarised by Claude from a sample of 5 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Blog
Most-linked posts?
- /syno_btrfs_1/5 people · 5 mentions · first linked 2020-01-27
- The Endless Conundrum of creating a secure PinePhone2 people · 2 mentions · first linked 2021-07-06
What Hacker News says?
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/
Comment linking /syno_btrfs_1/
on “ZFS 2.3 released with ZFS raidz expansion”Submitted The Endless Conundrum of creating a secure PinePhone as a story · 6 points
HN discussionThey do encryption/compression on subvolume level; each share you create is a separate subvolume. For RAID5, they are using it on top of LVM, but with some modification - the synology implementation hooks LVM and btrfs together, so it gets ZFS-like properties. There's a guy on the internet, who was playing around with it: https://daltondur.st/syno_btrfs_1/
Comment linking /syno_btrfs_1/
on “Five Years of Btrfs”Submitted The Endless Conundrum of creating a secure PinePhone as a story · 4 points
HN discussionWoops, you are correct! And it looks like it is dmraid, not mdadm. https://daltondur.st/syno_btrfs_1/ Sorry about that!
Comment linking /syno_btrfs_1/
on “Bcachefs, an Introduction/Exploration”I just have a Synology DS1821+ which has (8 * HDD bays) + (2 * M2 slots). The bays I've filled with 18TB HDDs (I chose Toshiba N300 as they do not use SMR). The M2 slots I've put a couple of 1TB M2 drives in as an SSD cached (they better allow the HDDs to hibernate for frequently accessed files like music). I've got these in an SHR configuration (Synology Hybrid Raid with 1 disk of protection) which means about 115-…
Comment linking /syno_btrfs_1/
on “38TB of data accidentally exposed by Microsoft AI researchers”Synology's implementation of BTRFS is rocksolid, in my experience. This guy [1] tried to break it and couldn't. [1] https://daltondur.st/syno_btrfs_1/
Comment linking /syno_btrfs_1/
on “Examining Btrfs”