[pkg-cryptsetup-devel] Bug#1016474: cryptsetup: The system installed on encrypted LVM (both root and swap partitions) freezes during massive writes

[Guilhem Moulin]

On Mon, 01 Aug 2022 at 14:10:26 +0200, Wojciech Zabołotny wrote:
> Modifying the mapping parameters with:
>  # cryptsetup  --perf-no_write_workqueue refresh name_of_the_mapping
> 
> indeed eliminates the problem.
> Isn't it then the problem with default mapping parameters used in
> cryptsetup?

IMHO not: if setting up these flags were desirable in all cases then the
better place to change the defaults would be the dm-crypt subsystem (ie
the kernel).  Note that if the --perf-* flag(s) improve performance on
your system you can set them in /etc/crypttab too, so the wrappers pass
them along when mapping the volume (like for discard).

-- 
Guilhem.
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