Bug 219783

Summary: BTRFS can be broken from userspace when using O_DIRECT
Product: File System Reporter: Roland Kletzing (devzero)
Component: btrfsAssignee: BTRFS virtual assignee (fs_btrfs)
Status: NEW ---    
Severity: normal    
Priority: P3    
Hardware: All   
OS: Linux   
Kernel Version: Subsystem:
Regression: No Bisected commit-id:

Description Roland Kletzing 2025-02-15 10:32:29 UTC 
See https://bugzilla.kernel.org/show_bug.cgi?id=99171#c16

and

https://lore.kernel.org/linux-btrfs/cf8a733f-2c9d-7ffe-e865-4c13d99dfb60@libero.it/

i did not yet manage to break zfs 2.3 mirror with the mentioned two test tools, neither with direct=standard nor with direct=always. zfs supports O_DIRECT since that release.