Re: [openstack-dev] [Swift] Erasure coding and geo replication

2016-04-20 Thread John Dickinson
There's no significant change with the global EC clusters story in the 2.7 release. That's something we're discussing next week at the summit. --John On 19 Apr 2016, at 22:47, Mark Kirkwood wrote: > Hi, > > Has the release of 2.7 significantly changed the assessment here? > > Thanks > > Mark

Re: [openstack-dev] [Swift] Erasure coding and geo replication

2016-04-19 Thread Mark Kirkwood
Hi, Has the release of 2.7 significantly changed the assessment here? Thanks Mark On 15/02/16 23:29, Kota TSUYUZAKI wrote: Hello Mark, AFAIK, a few reasons for that we still are in working progress for erasure code + geo replication. and expect to survive a region outage... With that I

Re: [openstack-dev] [Swift] Erasure coding and geo replication

2016-02-15 Thread Mark Kirkwood
On 16/02/16 17:10, Mark Kirkwood wrote: On 15/02/16 23:29, Kota TSUYUZAKI wrote: Hello Mark, AFAIK, a few reasons for that we still are in working progress for erasure code + geo replication. and expect to survive a region outage... With that I mind I did some experiments (Liberty swift)

Re: [openstack-dev] [Swift] Erasure coding and geo replication

2016-02-15 Thread Mark Kirkwood
On 15/02/16 23:29, Kota TSUYUZAKI wrote: Hello Mark, AFAIK, a few reasons for that we still are in working progress for erasure code + geo replication. and expect to survive a region outage... With that I mind I did some experiments (Liberty swift) and it looks to me like if you have: -

Re: [openstack-dev] [Swift] Erasure coding and geo replication

2016-02-15 Thread Kota TSUYUZAKI
Hello Mark, AFAIK, a few reasons for that we still are in working progress for erasure code + geo replication. >> and expect to survive a region outage... >> >> With that I mind I did some experiments (Liberty swift) and it looks to me >> like if you have: >> >> - num_data_frags < num_nodes in

[openstack-dev] [Swift] Erasure coding and geo replication

2016-02-15 Thread Mark Kirkwood
After looking at: https://www.youtube.com/watch?v=9YHvYkcse-k I have a question (that follows on from Bruno's) about using erasure coding with geo replication. Now the example given to show why you could/should not use erasure coding with geo replication is somewhat flawed as it is