coefficients

2014-07-11 Thread Koleos Fuscus
Hi Loic, If you still need to calculate more coefficients there is an explanation of how to construct the coding equations in the paper Erasure coding in Windows Azure Storage (unless you will keep your LRC implementation simple and do only the LRC (10,6,5) ). I undertand that the codes LRC in

Re: [PATCH v3 0/2] Add ceph root filesystem

2014-07-11 Thread Patrick Hahn
On 05/28/2014 06:46 PM, Alex Elsayed wrote: mark.doff...@codethink.co.uk wrote: From: Mark Doffman mark.doff...@codethink.co.uk Hi All, The following is a third version of a patch series that adds the ability to use a ceph distributed file system as the root device. snip Would you

EC pool - empty files in OSD from radosgw

2014-07-11 Thread Guang Yang
Hi Loic, I opened an issue in terms of a change brought along with EC pool plus radosgw (http://tracker.ceph.com/issues/8625), in our test cluster, we observed a large number of empty files in OSD and the root cause is that for head object from radosgw, there are a couple of transactions coming

Re: coefficients

2014-07-11 Thread Loic Dachary
Hi koleosfuscus, Thanks for the pointer, it is very helpful. I'm inclined to keep the simpler approach for the first implementation while exploring and learning more about the smarter / more complex approach. This may change if someone willing to help comes on board in the meantime ;-) Cheers

Re: [PATCH] ReplicatedPG: For async-read, set the real result after completing read.

2014-07-11 Thread Samuel Just
Looks about right, file a pull request? -Sam On Thu, Jul 10, 2014 at 2:23 AM, Ma, Jianpeng jianpeng...@intel.com wrote: When reading an object from replicated pool, ceph uses sync mode, so it can set the results in execute_ctx correctly. However, For the async-read in EC Pool, current code

Re: v0.80.2?

2014-07-11 Thread Sylvain Munaut
Hi, We built v0.80.2 yesterday and pushed it out to the repos, but quickly discovered a regression in radosgw that preventing reading objects written with earlier versions. We pulled the packages, fixed the bug, and are rerunning tests to confirm the fix and ensure there aren't other

Re: v0.80.2?

2014-07-11 Thread Sage Weil
On Fri, 11 Jul 2014, Sylvain Munaut wrote: Hi, We built v0.80.2 yesterday and pushed it out to the repos, but quickly discovered a regression in radosgw that preventing reading objects written with earlier versions. We pulled the packages, fixed the bug, and are rerunning tests to

v0.80.3 released

2014-07-11 Thread Sage Weil
v0.80.3 Firefly === This is the third Firefly point release. It includes a single fix for a radosgw regression that was discovered in v0.80.2 right after it was released. We recommand that all v0.80.x Firefly users upgrade. Notable Changes --- * radosgw: fix regression