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Add persistent and perf options to the luks_device (#434)

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Read and write work queue significantly degrades performance on
SSD/NVME devices[1].

In Debian 11 crypttab does not support no-read-workqueue and
no-write-workqueue flags, so the persistent flag is workaround: once
opened with perf parameters persists forever.

[1] https://blog.cloudflare.com/speeding-up-linux-disk-encryption/

Signed-off-by: Yauhen Artsiukhou <jsirex@gmail.com>
This commit is contained in:
Yauhen
2022-04-10 16:30:10 +04:00
committed by GitHub
parent c7f581daad
commit 041fff5057
3 changed files with 171 additions and 1 deletions
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changelogs/fragments/434-add-persistent-and-perf-options.yml Normal file
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minor_changes:
- luks_devices - added ``persistent`` option when opening LUKS2 containers (https://github.com/ansible-collections/community.crypto/pull/434).
- luks_devices - added ``perf_same_cpu_crypt``, ``perf_submit_from_crypt_cpus``, ``perf_no_read_workqueue``, ``perf_no_write_workqueue`` for performance tuning when opening LUKS2 containers (https://github.com/ansible-collections/community.crypto/issues/427).