At Sat, 20 Jun 2026 21:01:32 +0100 [email protected] wrote: > > David Christensen <[email protected]> wrote: > > AIUI neither XFS nor mdadm compute, store, or verify checksums of > > data or metadata on disk. > > XFS checksums metadata for many years now (12?), but it doesn't checksum > user data.
I've always thought that the hardware controller checksums raw disk blocks (sectors) as part of the low-level I/O processing in the controller hardware's "firmware" and that this is how the controller knows it has a bad block. > > > -- Robert Heller -- Cell: 413-658-7953 GV: 978-633-5364 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services [email protected] -- Webhosting Services
