O_DIRECT support for host-mounted volume

[friism]

Cross-posted from the MS SQL Server tracker: microsoft/mssql-docker#12

SQL Server requires underlying filesystems to support the O_DIRECT file option so that we can use asynchronous I/O. It appears that Docker's OS X volume mapper doesn't support this. We also require O_DIRECT because SQL Server expects unbuffered I/O to the disk.

[Raymond-Porrata]

Question: since paragon software has the ability to read/write ntfs volumes, can docker use the tool to support async i/o? Is there a way to test this? thanks in advance for any guidance. https://paragon-software.com/. I am also reaching out to Paragon Software about this topic.

[docker-robott]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale comment.
Stale issues will be closed after an additional 30d of inactivity.

Prevent issues from auto-closing with an /lifecycle frozen comment.

If this issue is safe to close now please do so.

Send feedback to Docker Community Slack channels #docker-for-mac or #docker-for-windows.
/lifecycle stale

[TribuneX]

/remove-lifecycle stale