At Sun, 25 Oct 2026 21:41:25 +0100, Henryk Paluch <[email protected]> wrote: Subject: Re: Most simple filesystem with content checksums? > > Please note, that Linux offers also 3rd > method - integritysetup(8) - it works on > block level - device mapper - (basically > adding metadata with checksums for each > block - to make it space efficient, these > metadata blocks are "clustered" (grouped > metadata for several blocks until they > fill whole block). Integritysetup allows > checksums for complete filesystems that do > not have them (like ext4 that added > metadata checksums but not data > checksums). > > Curious if, for example, RAIDframe could > do something similar?
RAIDframe already does checksum protection when configured to do so.
That's what RAID-5 _is_. What's missing in RAIDframe is a background
daemon that will occasionally scan the volume to detect and repair
bitrot. Many more modern so-called "hardware" RAID controllers have
such a feature.
However there's also the logical volume manager, LVM, which might actually be
how the Linux "dm-integrity" feature is also implemented.
Using LVM and the device mapper to implement something equivalent to the
linux "dm-integrity" feature would be a great idea! It would be far
more flexible than just using RAIDframe.
--
Greg A. Woods <[email protected]>
Kelowna, BC +1 250 762-7675 RoboHack <[email protected]>
Planix, Inc. <[email protected]> Avoncote Farms <[email protected]>
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