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Architecture - DMU OSD

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Contents

Summary

DMU OSD is a implementation of OSD API for DMU.

Definitions

DMU is a core of ZFS.


Use Cases

ID Quality Attribute Summary
mount usability
umount usability
fid mapping usability how we map fids to local object id (dnode)
async IO performance use async IO where possible for better performance
swapping performance protect cache from swapping (actual for userspace DMU)

Quality Attribute Scenarios

Implementation Details

here we enlist how DMU API matches OSD API

References

MDS-on-DMU

OSS-on-DMU

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