v.20.3Improvement

Prevent Abort on Shutdown for Readonly Filesystem

Prevent abort on shutdown if the filesystem is readonly. This fixes #9094 #9100 (alexey-milovidov)
Prevent ClickHouse from aborting during shutdown if the filesystem is mounted as read-only.

Why it matters

This feature addresses an issue where ClickHouse would abort shutdown procedures if the underlying filesystem was read-only. By preventing this abort, it ensures that the server can shut down gracefully regardless of filesystem write permissions, improving stability and reliability in restricted environments.

How to use it

This fix is applied automatically with the update; no additional configuration or user action is required to benefit from this feature.