[ovirt-users] ovirt - unsupported GFS config ??

[Sahina Bose]

On 03/27/2016 10:24 PM, paf1 at email.cz wrote:
> What's the recommended shard size for databases ( espacially Oracle ) 
> , I'm afraid that 512M is too large.
> I found that someones using  about 16MB , but it generate a lot of 
> files for healing if volumes  splitted. (eg. for 500GB DB in worse case )

Would the database be running within the guest VM?

Did you run into any specific issue with 512M shard size?
What we have noticed is that with smaller shard sizes , like 4MB, the 
number of entries in the .shard directory is too high, and hence affects 
the performance when it comes to healing entries in directory. The 
256M/512M shard size is a good balance between the number of entries 
created and data size to heal.

>
> Pa.
>
> On 27.3.2016 16:57, Sahina Bose wrote:
>> Stripe is not supported.
>>
>> What you need to do instead is turn on sharding for the volume.
>>
>> So:
>>
>> gluster volume create 12HP12-S2R3A1P2 replica 3 arbiter 1 
>> 1hp1:/STORAGES/P2/GFS 1hp2:/STORAGES/P2/GFS 
>> kvmarbiter:/STORAGES/P2-1/GFS  force
>>
>> gluster volume set 12HP12-S2R3A1P2 features.shard on
>> gluster volume set 12HP12-S2R3A1P2 features.shard-block-size 512MB
>>
>> If you want to utilize the additional nodes as well, you can change 
>> this to a distributed replicate volume - instead of the volume 
>> creation in step above , use below
>>
>> gluster volume create 12HP12-S2R3A1P2 replica 3 arbiter 1 
>> 1hp1:/STORAGES/P2/GFS 1hp2:/STORAGES/P2/GFS 
>> kvmarbiter:/STORAGES/P2-1/GFS 2hp1:/STORAGES/P2/GFS 
>> 2hp2:/STORAGES/P2/GFS  kvmarbiter:/STORAGES/P2-2/GFS  force
>>
>>
>> On 03/24/2016 07:49 PM, paf1 at email.cz wrote:
>>> Hello,
>>> I tried create stripe 2 replica 3 arbiter1 gluster volume for testing.
>>> So , glusterFS such type from commandline was successfull, but 
>>> domain creation looks to be unsupported. with oVirt message "Error 
>>> while executing action AddGlusterFsStorageDomain: Storage Domain 
>>> target is unsupported".
>>> Cam U tell me if is it  error or really unsuported ??
>>>
>>> exam:
>>> gluster volume create 12HP12-S2R3A1P2 stripe 2 replica 3 arbiter 1 
>>> 1hp1:/STORAGES/P2/GFS 1hp2:/STORAGES/P2/GFS 
>>> kvmarbiter:/STORAGES/P2-1/GFS 2hp1:/STORAGES/P2/GFS 
>>> 2hp2:/STORAGES/P2/GFS  kvmarbiter:/STORAGES/P2-2/GFS  force
>>>
>>>
>>> RHEL 7-2.1511
>>> vdsm - vdsm-4.17.23-1.el7
>>> gluster - glusterfs-3.7.9-1.el7
>>> ovirt - 3.5.6.2-1
>>>
>>> regs.Pavel
>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160328/c0670ff0/attachment-0001.html>