Re: [ceph-users] Trying to understand Cache Pool behavior

2015-06-27 Thread Reid Kelley
slow performance, using the cache tier should be > ok. Otherwise wait until the next release as there will be several > improvements. > >> -Original Message- >> From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of >> Reid Kelley >>

[ceph-users] Trying to understand Cache Pool behavior

2015-06-26 Thread Reid Kelley
Have been reading the docs and trying to wrap my head around the idea of a "write miss" with a cache tier in write-back mode. My use case is a large media archive, with write activity on file ingest (previews and thumbs generated) followed by very cold limited ready access. Seems to fit the ca

[ceph-users] intel atom erasure coded pool

2015-06-18 Thread Reid Kelley
Has there been any testing/feedback on using the 8-core intel atom c2750 with EC pools? Or any use case really? There are some enticing 1U 12x3.5’ chassis out there with with atom processor. The idea of low-power, dense, EC pool storage has a lot of appeal. We’re looking to build out a pretty

[ceph-users] Three tier cache setup

2015-05-20 Thread Reid Kelley
Could be a stupid/bad question; is a three tier cache/mid/cold setup supported? Example would be: 1. Fast NVME drives —> (write-back)—> 2. Mid grade MLC SSD for primary working set —>(write-back)—> 3. Super-Cold EC Pool for cheapest-deepest-oldest data Theoretically, that middle tier of quality