Bug 1071234

Summary: [RFE] Evaluate more possible ways for caching LVs
Product: [Fedora] Fedora Reporter: Zdenek Kabelac <zkabelac>
Component: lvm2Assignee: LVM and device-mapper development team <lvm-team>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: medium    
Version: rawhideCC: agk, bmarzins, bmr, dwysocha, heinzm, jbrassow, jonathan, lvm-team, msnitzer, prajnoha, zkabelac
Target Milestone: ---Keywords: FutureFeature
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Description Zdenek Kabelac 2014-02-28 10:34:05 UTC
Description of problem:

Newly introduced cache(pool) support in lvm2 currently allows to cache only a single LV.

This interface might not be the best for a user with a single large rotational drive and small SSD where he would need to create small caches for individual LVs (since the dm-cache support only 1:1 mapping)

However cache-pool may also serve to cache a whole single PV - thus we may hide the complexity from a user (as he would be now forced to 'stack' dm-cache PV on his own) and allow to use a single SSD for all LVs from 1 PV  (thus still matching 1:1).

The other method which we may explore is - to combine all LVs into 1 large mapping and use LVs this way - this would allow to map even multiple PVs into a single cache device - but with number of problems to resolve when i.e. LVs are resized.

Version-Release number of selected component (if applicable):
2.02.106

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Comment 1 Fedora Admin user for bugzilla script actions 2023-08-02 12:15:23 UTC
This package has changed maintainer in Fedora. Reassigning to the new maintainer of this component.