Changes/SSD cache

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SSDcache

Summary

Using recent kernel (3.9 and later) features for (fast) SSD caching of (slow) ordinary hard disks.

Owner

  • Name: Rolf Fokkens
  • Email: rolf@rolffokkens.nl
  • Release notes owner:

Current status

  • Targeted release: Fedora 20
  • Last updated: 2013-06-25
  • Tracker bug: <will be assigned by the Wrangler>

Detailed Description

Recent Linux kernels support the use of Solid State Drives as caches for rotational hard disks. Because the high cost per GB for SSD devices this feature may bring the best of both: fast end big yet affordable storage capacity. Linux kernel 3.9 introduced dm-cache, kernel 3.10 introduces bcache.

Benefit to Fedora

Scope

  • Proposal owners: Enable caching features in new kernels
  • Other developers: Support the caching features in their respective packages. Special focus should be on making the system boot from a cached root FS.
  • Release engineering: All packages should operate in close harmony te make this work. Only a rebuild of the relevant packages is required.
  • Policies and guidelines: No changes I think.

Upgrade/compatibility impact

N/A (not a System Wide Change)

How To Test

N/A (not a System Wide Change)

User Experience

N/A (not a System Wide Change)

Dependencies

N/A (not a System Wide Change)

Contingency Plan

  • Contingency mechanism: (What to do? Who will do it?) N/A (not a System Wide Change)
  • Contingency deadline: N/A (not a System Wide Change)
  • Blocks release? N/A (not a System Wide Change), Yes/No

Documentation

N/A (not a System Wide Change)

Release Notes