On Thu, May 07, 2026 at 11:53:59AM -0400, Stefan Monnier wrote: [...]
> > My point was that LVM actively asks mounted filesystems on LVs that are > > snapshotted to bring themselves to a consistent (clean) state before it > > does the snapshot. That was (20 year old) news to me. Is there any reference for that? AFAIK LVM doesn't "know" about the underlying file system (if there is any). > I don't know the details of how that is handled, but I don't think you > should presume that it results in a "clean" filesystem. Instead I'd > expect a filesystem like ext4 to do something like make sure the on-disk > journal covers all changes until "now". Yes, I think you have to rely on the journal to get things in whack. Which most civilised file systems these days have, anyway. But I might be wrong, see above. Cheers -- t
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