POSIX compatibility and stress tests

[radumarias]

We need to make sure we are POSIX compatible by running some tests and also stress tests.

POSIX:

• https://github.com/zfsonlinux/fstest
• https://stackoverflow.com/questions/21565865/filesystem-test-suites
• https://wiki.lustre.org/POSIX_Compliance_Testing
• https://github.com/pjd/pjdfstest
• https://lwn.net/Articles/276617/
• https://juicefs.com/docs/community/posix_compatibility/
• https://ceph.io/en/news/blog/2008/posix-file-system-test-suite/
• https://www.baeldung.com/linux/test-posix-compliance-shell-scripts
• https://github.com/google/file-system-stress-testing
• https://www.calsoftinc.com/blogs/file-system-testing-sneak-peak.html

Stress tests:

• https://stackoverflow.com/questions/21565865/filesystem-test-suites
• https://gitlab.com/dns2utf8/multi_file_writer
• https://github.com/AbhilashaRavichander/NLI_StressTest
• https://serverfault.com/questions/19487/how-to-do-filesystem-testing
• https://www.reddit.com/r/btrfs/comments/gbg3z0/filesystem_and_hardware_stress_test/
• https://github.com/google/file-system-stress-testing/blob/master/docs/monkeytesting.md
• https://aminet.net/package/disk/misc/FileSystemStressTest.lha
• https://docs.redhat.com/en/documentation/red_hat_enterprise_linux_for_real_time/8/html/optimizing_rhel_8_for_real_time_for_low_latency_operation/assembly_stress-testing-real-time-systems-with-stress-ng_optimizing-rhel8-for-real-time-for-low-latency-operation
• https://wiki.archlinux.org/title/Stress_testing
• https://fuchsia.dev/fuchsia-src/development/testing/rust_stress_test_library

https://github.com/radumarias/rencfs/issues/118