10:03 a.m.
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- 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(a)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(a)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(a)ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>
>
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- Yes, database will run in VM , but with RMAN online backups. So
VM takes over 1,4TB . This VM wil run 5-6x :o(<br>
- 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))<br>
<br>
regs.<br>
Pavel<br>
<br>
<div class="moz-cite-prefix">On 28.3.2016 08:30, Sahina Bose
wrote:<br>
</div>
<blockquote cite="mid:56F8CF8A.7040306@redhat.com"
type="cite">
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
<br>
<br>
<br>
<div class="moz-cite-prefix">On 03/27/2016 10:24 PM, <a
moz-do-not-send="true" class="moz-txt-link-abbreviated"
href="mailto:paf1@email.cz">paf1@email.cz</a>
wrote:<br>
</div>
<blockquote cite="mid:56F81046.3070200@email.cz"
type="cite">
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
What's the recommended shard size for databases ( espacially
Oracle ) , I'm afraid that 512M is too large.<br>
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 )<br>
</blockquote>
<br>
Would the database be running within the guest VM?<br>
<br>
Did you run into any specific issue with 512M shard size?<br>
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.<br>
<br>
<blockquote cite="mid:56F81046.3070200@email.cz"
type="cite"> <br>
Pa.<br>
<br>
<div class="moz-cite-prefix">On 27.3.2016 16:57, Sahina Bose
wrote:<br>
</div>
<blockquote cite="mid:56F7F4C0.2020408@redhat.com"
type="cite">
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
Stripe is not supported.<br>
<br>
What you need to do instead is turn on sharding for the
volume.<br>
<br>
So:<br>
<br>
gluster volume create 12HP12-S2R3A1P2 replica 3 arbiter 1
1hp1:/STORAGES/P2/GFS 1hp2:/STORAGES/P2/GFS
kvmarbiter:/STORAGES/P2-1/GFS force<br>
<br>
gluster volume set 12HP12-S2R3A1P2 features.shard on<br>
gluster volume set 12HP12-S2R3A1P2 features.shard-block-size
512MB<br>
<br>
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<br>
<br>
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<br>
<br>
<br>
<div class="moz-cite-prefix">On 03/24/2016 07:49 PM, <a
moz-do-not-send="true" class="moz-txt-link-abbreviated"
href="mailto:paf1@email.cz">paf1@email.cz</a>
wrote:<br>
</div>
<blockquote cite="mid:56F3F75D.8060201@email.cz"
type="cite">
<meta http-equiv="content-type" content="text/html;
charset=windows-1252">
Hello, <br>
I tried create stripe 2 replica 3 arbiter1 gluster volume
for testing.<br>
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".<br>
Cam U tell me if is it error or really unsuported ??<br>
<br>
exam: <br>
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<br>
<br>
<br>
RHEL 7-2.1511<br>
vdsm - vdsm-4.17.23-1.el7<br>
gluster - glusterfs-3.7.9-1.el7<br>
ovirt - 3.5.6.2-1<br>
<br>
regs.Pavel<br>
<br>
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