Sébastien Han
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OpenStack at the CephDays Paris

September 5, 2014 · 1 min read
Sébastien Han
Sébastien Han

Save the date (September 18, 2014) and join us at the new edition of the Ceph Days in Paris. I will be talking about the new amazing stuff that happened during this (non-finished yet) Juno cycle. …

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  • openstack
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OpenStack: use ephemeral and persistent root storage for different hypervisors

September 1, 2014 · 3 min read
Sébastien Han
Sébastien Han

Computes with Ceph image backend and computes with local image backend. At some point, you might want to build hypervisor and use their local storage for virtual machine root disks. Using local …

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  • openstack
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Ceph: mix SATA and SSD within the same box

August 25, 2014 · 7 min read
Sébastien Han
Sébastien Han

The use case is simple, I want to use both SSD disks and SATA disks within the same machine and ultimately create pools pointing to SSD or SATA disks. In order to achieve our goal, we need to modify …

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  • ceph
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A must-have cron job on your OpenStack Cloud

August 18, 2014 · 1 min read
Sébastien Han
Sébastien Han

Running OpenStack on production can be difficult, so every optimizations are good to take :).

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  • openstack
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Ansible greatest trick: iterate over a set of host

August 6, 2014 · 1 min read
Sébastien Han
Sébastien Han

While running a playbook on a host you can request some information about other nodes.

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  • ansible
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Start with the RBD support for TGT

July 7, 2014 · 3 min read
Sébastien Han
Sébastien Han

A couple a months ago, Dan Mick posted a nice article that introduced the RBD support for iSCSI / TGT. In this article, I will have a look at it.

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  • ceph
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UNSTABLE: test the dynamic tree partitionning with multiple Ceph MDS

July 2, 2014 · 1 min read
Sébastien Han
Sébastien Han

Quick tip to enable the dynamic subtree tree partitionning with multiple Ceph MDS servers.

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  • ceph
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Ceph cache pool tiering: a scalable and distributed cache

June 10, 2014 · 3 min read
Sébastien Han
Sébastien Han

Moving further on the Software Defined Storage principles, Ceph, with its latest stable version introduced a new mechanism called cache pool tiering. It brings a really interesting concept that will …

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  • ceph
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Start considering Ceph as a backend for OpenStack Cinder (to replace LVM)

June 2, 2014 · 4 min read
Sébastien Han
Sébastien Han

Just back from the Juno summit, I attended most of the storage sessions and was extremely shocked how Ceph was avoided by storage vendors. However LVM, the reference storage backend for Cinder was …

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  • openstack
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Back from the Juno summit Ceph integration into OpenStack

May 29, 2014 · 7 min read
Sébastien Han
Sébastien Han

Six months have passed since Hong Kong and it is always really exciting to see all the folks from the community gathered all-together in a (bit chilly) convention center. As far I saw from the …

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  • openstack
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