From mboxrd@z Thu Jan  1 00:00:00 1970
From: Emmanuel Florac <eflorac@intellique.com>
Subject: Re: Partitions on bcache devices
Date: Thu, 29 Sep 2016 18:31:22 +0200
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Le Thu, 29 Sep 2016 17:40:56 +0200
"Jens-U. Mozdzen" <jmozdzen@nde.ag> =C3=A9crivait:

> Another counter-example: You wouldn't put LVM on a disk that's =20
> intended as a (100%) MD-RAID volume, and add an LV as RAID member... =20
> you'll add a partition table for a reason, but no extra layer
> between the partition and the RAID stuff.
>=20

I agree, but usually you wouldn't partition an MD-RAID either, would
you? OSDs are still holding (so far) ordinary filesystems locally
mounted on the nodes (except for BlueStore AFAIK).

Anyway bcache would mostly make sense for the journal, much less for
the data section, so wouldn't it better to use bcache (or flash) for
journal/metadata only?

--=20
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Emmanuel Florac     |   Direction technique
                    |   Intellique
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