Derek Su

> [@derekbit](https://github.com/derekbit) yes a delta rebuild is exactly what I expect with full I meaning a delete and complete copy which is the point of destroying the ssd. Took a...

> [@derekbit](https://github.com/derekbit) This is the problem, expected is delta but longhorn writes everything on the node from scratch Hmm, curious, how do you know Longhorn writes everything thing from scratch?

> > > [@derekbit](https://github.com/derekbit) This is the problem, expected is delta but longhorn writes everything on the node from scratch > > > > > > Hmm, curious, how do...

Thanks @Syntax3rror404. We will investigate the issue to see if it is reproducible in our Lab env. @mantissahz Please follow up with the issue and help investigate it. Thank you.

Noted that @mantissahz will investigate the issue, clarify if it is expected behavior and improve the official document in https://github.com/longhorn/longhorn/issues/11119.

@mantissahz is investigating the issue to see if it is expected. If it is an issue or a bug, we might need to address it in the upcoming v1.9.1. cc...

> [supportbundle_120dbce5-78c4-42bf-9c75-eb3be3615bc4_2025-06-26T16-30-36Z.zip](https://github.com/user-attachments/files/20929877/supportbundle_120dbce5-78c4-42bf-9c75-eb3be3615bc4_2025-06-26T16-30-36Z.zip) [supportbundle_120dbce5-78c4-42bf-9c75-eb3be3615bc4_2025-06-26T16-34-19Z.zip](https://github.com/user-attachments/files/20929925/supportbundle_120dbce5-78c4-42bf-9c75-eb3be3615bc4_2025-06-26T16-34-19Z.zip) [supportbundle_120dbce5-78c4-42bf-9c75-eb3be3615bc4_2025-06-26T17-06-40Z.zip](https://github.com/user-attachments/files/20930278/supportbundle_120dbce5-78c4-42bf-9c75-eb3be3615bc4_2025-06-26T17-06-40Z.zip) > > I will look into these support bundles soon to see if any new findings. @mantissahz Any findings?

@mantissahz This ticket and https://github.com/longhorn/longhorn/issues/8737 are critical topics for rebuilding performance. Let's address them in v1.11.0 as a top priority. cc @innobead

> Facing this with my large RWM volumes. It happens once per 1-2 days. Rebooting works. Don't know what the issue could be. > > I suspect it is due...

cc @mantissahz (community coordinator)