https://blogs.damiendye.uk/en/tags/flashstore/ Recent content in Flashstore on Damien Dye's Blog Hugo en-GB Wed, 11 Nov 2026 15:30:00 +0000 https://blogs.damiendye.uk/en/ceph/flashstore-against-crimson/ Wed, 11 Nov 2026 15:30:00 +0000 https://blogs.damiendye.uk/en/ceph/flashstore-against-crimson/ Ceph's own Crimson and croit's FlashStore both rewrite the OSD for NVMe. As Umbrella 21.2.0 ships Crimson: origin and status, memory safety, how each joins a cluster, why existing pools cannot move to Crimson, what it tells the monitor, cores, Crimson's default BlueStore, SeaStore's trees, commit order and cleaning, and what each runs on. https://blogs.damiendye.uk/en/ceph/flashstore-against-umbrella-bluestore/ Wed, 11 Nov 2026 14:30:00 +0000 https://blogs.damiendye.uk/en/ceph/flashstore-against-umbrella-bluestore/ croit's ceph-rust replaces ceph-osd and BlueStore with a Rust OSD and its own store. Compared against BlueStore as Ceph 21.2.0 Umbrella ships it: where metadata lives, the 4 KiB write and the sub-4 KiB overwrite, threads against cores, PLP, what it will not run on, reporting as BlueStore, and migration. https://blogs.damiendye.uk/en/proxmox/flashstore-osd-on-proxmox/ Wed, 11 Nov 2026 10:00:00 +0000 https://blogs.damiendye.uk/en/proxmox/flashstore-osd-on-proxmox/ croit's Rust FlashStore OSD, two days into public preview, hyperconverged on Proxmox VE 9.2 with Ceph Umbrella from the GUI. Covers the version match, 4K Optane formats, the host check, pmxcfs blocking the unit, the passthrough PVE's kernel refuses, prepare, the OSD panel, a pool and VM, CrystalDiskMark under load, and a tested setup script.