[ovirt-users] Multi-node cluster with local storage

[Pavel Gashev]

On 04/03/16 16:39, "Sahina Bose" <sabose at redhat.com> wrote:
>On 03/04/2016 05:30 PM, Pavel Gashev wrote:
>> On 04/03/16 13:50, "Sahina Bose" <sabose at redhat.com> wrote:
>>> Most of the problems that you outline here - related to healing and
>>> replacing are addressed with the sharding translator. Sharding breaks
>>> the large image file into smaller files, so that the entire file does
>>> not have to be copied. More details here -
>>> http://blog.gluster.org/2015/12/introducing-shard-translator/
>> Sure, I meant the same by mentioning distributed+replicated volumes. Actually, distributed+striped+replicated - https://access.redhat.com/documentation/en-US/Red_Hat_Storage/2.0/html/Administration_Guide/sect-User_Guide-Setting_Volumes-Distributed_Striped_Replicated.html
>
>Ok. Sharding is not the same as striped volumes in gluster. With 
>striping, like you mentioned, you would require more number of nodes to 
>form the striped set in addition to the replica set.( so 6 nodes since 
>you need replica 3 )
>Sharding can however work with 3 nodes - so on the replica 3 gluster 
>volume that you create, you can turn on the volume option 
>"features.shard on", to turn on this feature.

Great feature. I think it must be "on" in oVirt by default.