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Feature #26831

mds: consider subtree setting to enable LAZYIO automatically (RFC)

Added by Patrick Donnelly 5 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
Correctness/Safety
Target version:
Start date:
Due date:
% Done:

0%

Source:
Development
Tags:
Backport:
Reviewed:
Affected Versions:
Component(FS):
Client, MDS, kceph
Labels (FS):
task(intern)
Pull request ID:

Description

See discussion here: https://github.com/ceph/ceph/pull/22450#issuecomment-400614296

This should be one avenue to explore to relax consistency requirements across a subtree for performance.

One open question is how do we handle a client that wants to open a file without LAZYIO (i.e. O_SYNC)? Should we just ignore the flag? Or just force recall of Flwr from other clients and give out Fwr?


Related issues

Related to fs - Feature #20598: mds: revisit LAZY_IO Resolved 07/12/2017

History

#1 Updated by Patrick Donnelly 5 months ago

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