----- Original Message -----
Tomasz Torcz (tomek@pipebreaker.pl) said:
On Mon, Jul 15, 2013 at 09:17:56AM -0400, Josh Boyer wrote:
On Mon, Jul 15, 2013 at 5:56 AM, Jaroslav Reznik jreznik@redhat.com wrote:
= Proposed System Wide Change: SSD cache = https://fedoraproject.org/wiki/Changes/SSD_cache
Release engineering: All packages should operate in close harmony te make this work. Only a rebuild of the relevant packages is required.
This doesn't make sense. We're doing a mass rebuild, so all packages are getting rebuild anyway.
I'm confused what this Change is actually for. It doesn't sound like an actual planned and targeted set of changes. It seems more of a nebulous "we should get people to do this" proposal.
Yes, I would *guess* it involves:
- modifing anaconda to allow cache device designation during installation (this is more important with bcache, as it needs special formatting; dm-cache can be disabled/enabled on the fly)
- modify dracut to properly attach bcache in initramfs
- integrate dm-cache handling with local-fs.target
- finishing SSD caching layer for btrfs
- (...) ?
Yeah, I'm confused. If it's just the raw enablers, it's:
- turn on bcache & dm-cache (done)
- add dm-cache to device-mapper userspace (done, IIRC)
- build bcache-tools (don't see a review for it)
The real system wide change would be the more invasive things Tomasz mentions above.
From initial look, before it was clarified here, it looked more system
wide - kernel changes etc. Now I agree, it changed.
Jaroslav
Bill
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