9:30 a.m.
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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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<div class="moz-cite-prefix">On 03/27/2016 10:24 PM, <a
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"><a
class="moz-txt-link-abbreviated"
href="mailto:paf1@email.cz">paf1@email.cz</a></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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