Alex, Thanks for the response, and nice work on the write up.
~James On Mon, Apr 16, 2018 at 5:28 AM, alex barchiesi <alex.barchi...@garr.it> wrote: > Hi James, > at GARR we recently tested the cinder multi backend with the following > idea in mind: > support 3 different backends: > > - a default one, for general-purpose disks like virtual machine boot > disks: replicated pool with replica factor equal to 3 > - a reduced redundancy one: replicated pool with replica factor 2, > which should slightly improve latency > - a large capacity one: erasure-coded (possibly with a small frontend > replicated pool) > > Premise: we have a juju deployed O~S (spanning 3 geographical data > centers). > > We configured Cinder such that it allows selection between multiple > “Volume Types”, where each Volume Type points to a distinct Ceph pool > within the same Ceph cluster. > > This is the simplest configuration, as it involves Cinder configuration > alone. Volumes which are created can be later attached to running > instances, but all instances will have their boot disk on the default pool > cinder-ceph. > > We faced some issues as reported in details here: https://docs.google.com/ > document/d/1VSS28cvZBIOEzTOmVMWZ0o9FiVFkVLvu__ZOLxneMqQ/edit# > > Would be interesting to find a way to be able to select the pool also for > the boot disk of a VM > > Any comment, idea, "whatever" (also on the doc) is very much appreciated > > best Alex > > > > Dr. Alex Barchiesi > ____________________________________ > Senior cloud architect > Art -Science relationships responsible > > GARR CSD department > > Rome GARR: +39 06 4962 2302 > Lausanne EPFL: +41 (0) 774215266 > > linkedin: alex barchiesi > <http://www.linkedin.com/profile/view?id=111538190&goback=%2Enmp_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1&trk=spm_pic> > _____________________________________ > I started with nothing and I still have most of it. > > > > On Sat, Apr 14, 2018 at 3:25 AM, James Beedy <jamesbe...@gmail.com> wrote: > >> Looking for examples that describe how to consume multiple ceph backends >> using the cinder-ceph charm. >> >> Thanks >> >> -- >> Juju mailing list >> Juju@lists.ubuntu.com >> Modify settings or unsubscribe at: https://lists.ubuntu.com/mailm >> an/listinfo/juju >> >> >
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