[ceph-users] How does EC pools support thousands of xattrs (XFS) but no omaps?

Hi While migrating to EC pools, I came to know that it does not support omaps but it allows thousands of xattrs (XFS). Are these xattrs being stored in a key-value store or in XFS file system? Regards Chandan ___ ceph-users mailing list ceph-users@lists

[ceph-users] EC Jerasure plugin and StreamScale Inc

Hi What does the ceph community think of StreamScale's claims on Jerasure? Is it possible to use the EC plugin for commercial purposes? What is your advice? Regards Chandan ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/list

[ceph-users] appending to objects in EC pool

Hi Since EC pool requires data alignment (rados_ioctx_pool_requires_alignment), if objects are of random sizes, is appending to objects no longer an option. Thanks Chandan ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listi

Re: [ceph-users] Erasure coding after striping

nced, > and write\read requests will spread across the whole cluster which > will improve w/r performance . > > 2016-04-15 22:17 GMT+08:00 Chandan Kumar Singh >: > > Hi > > > > Is it a good practice to store striped objects in a EC pool? If yes, what > > are th

[ceph-users] Erasure coding after striping

Hi Is it a good practice to store striped objects in a EC pool? If yes, what are the pros and cons of such a pattern? Regards Chandan ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

[ceph-users] Erasure coding for small files vs large files

Hi I am evaluating EC for a ceph cluster where the objects are mostly of smaller sizes (< 1 MB) and occasionally large (~ 100 - 500 MB). Besides the general performance penalty of EC, is there any additional disadvantage of storing small objects along with large objects in same EC pool. More gene