On Wed, 2022-08-17 at 14:39 +0200, Martin Wilck wrote:
> "multipath -U" is
> already quite well optimized, but it needs to do some I/O to complete
> it's work, thus it takes a few milliseconds to run.
>
> IOW, it would be misleading to point at multipath.
This is what I thought. I had another look today, and I found that the
case of a very large "multipath.conf" file is indeed not well
optimized. I just sent a patch set to dm-devel ("multipath:
optimizations for large mptable") which should the issue discussed in
this thread on the multipath side.
The pvmove / watch problem could still deserve some attention, but the
urgency should be much lower.
Martin
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