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

[paf1 at email.cz]

- Yes, database will run in VM , but with RMAN online backups. So VM 
takes  over 1,4TB . This VM wil  run 5-6x   :o(
- I have no special issues with  512MB shard size, looks OK but not 
tested for such databases yet ( Waiting for 3.7.10 gluster (dupl.healing 
fix))

regs.
Pavel

On 28.3.2016 08:30, Sahina Bose wrote:
>
>
>
> 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/20160328/9e394432/attachment-0001.html>