[systemd-devel] [PATCH] rules: block - add dm devices to whitelist

[David Disseldorp]

Thanks for the feedback, Lennart...

On Mon, 10 Jul 2017 10:38:38 +0200, Lennart Poettering wrote:

> On Wed, 05.07.17 13:01, David Disseldorp (ddiss at suse.de) wrote:
> 
> > Ceph relies on by-partuuid symlinks, in order to locate the journal
> > partition from a given OSD partition. For details, see
> > http://tracker.ceph.com/issues/19489.  
> 
> This appears way too broad, as it would apply to all LVM and all other
> devices.
>
> It appears to me Ceph should do the same as LVM does for this, and
> ship its own set of rules, and be careful to only match against the
> actual devices it creates.

We can certainly do this in a Ceph specific manner via the existing
95-ceph-osd.rules, but my impression was that the by-partuuid symlinks
are "owned" by 60-persistent-storage.rules .

If you don't think the existence of these symlinks for dm paths will be
of use to others then I'll go ahead and propose it as a Ceph only
change.

Cheers, David