[Ocfs2-devel] OCFS2 support which architectures and can the cluster work under mixed architectures?

[Ocfs2-devel] OCFS2 support which architectures and can the cluster work under mixed architectures?

[Gang He]

Hello guys,

From the document(https://oss.oracle.com/projects/ocfs2/), it says that OCFS2 supports x86, x86_64, ia64 and ppc64. I am not sure that this doc is up-to-date, now, OCFS2 supports any other architecture? e.g. s390x?
The second question, since OCFS2 is a cluster FS and support multiple architectures, can a OCFS2 cluster work under a mixed architectures environment? e.g. some nodes are x86, some nodes are ppc64.


Thanks a lot.
Gang 

[Ocfs2-devel] OCFS2 support which architectures and can the cluster work under mixed architectures?

[Junxiao Bi]

Hi Gang,

On 08/06/2015 11:03 AM, Gang He wrote:
> Hello guys,
> 
>>From the document(https://oss.oracle.com/projects/ocfs2/), it says that OCFS2 supports x86, x86_64, ia64 and ppc64. I am not sure that this doc is up-to-date, now, OCFS2 supports any other architecture? e.g. s390x?
> The second question, since OCFS2 is a cluster FS and support multiple architectures, can a OCFS2 cluster work under a mixed architectures environment? e.g. some nodes are x86, some nodes are ppc64.
I think ocfs2 works good on le endian, but maybe not on big endian
though i never test it. From the source code, kernel seemed be prepared
for big endian, but for tools, maybe not, i found lot of codes reading
stuff from disk to memory without conversion in fsck.ocfs2. I am not
sure about other tools, so may need do a full check.

Thanks,
Junxiao.
> 
> 
> Thanks a lot.
> Gang 
> 
> 
> 
> 
> _______________________________________________
> Ocfs2-devel mailing list
> Ocfs2-devel at oss.oracle.com
> https://oss.oracle.com/mailman/listinfo/ocfs2-devel
> 

[Ocfs2-devel] OCFS2 support which architectures and can the cluster work under mixed architectures?

[Gang He]

Hello Junxiao,

Thank for your information.

Is OCFS2 file system proved (or fully tested) only on x86 and x86_64 platform? my understanding is right? that means we should not recommend OCFS2 file sytem to the customers for being used under the other architectures in production before we do a full testing?


Thanks
Gang 

-- 
<The HTML signature 'New Signature' does not contain any text>


>>> 
> Hi Gang,
> 
> On 08/06/2015 11:03 AM, Gang He wrote:
>> Hello guys,
>> 
>>>From the document(https://oss.oracle.com/projects/ocfs2/), it says that OCFS2 
> supports x86, x86_64, ia64 and ppc64. I am not sure that this doc is 
> up-to-date, now, OCFS2 supports any other architecture? e.g. s390x?
>> The second question, since OCFS2 is a cluster FS and support multiple 
> architectures, can a OCFS2 cluster work under a mixed architectures 
> environment? e.g. some nodes are x86, some nodes are ppc64.
> I think ocfs2 works good on le endian, but maybe not on big endian
> though i never test it. From the source code, kernel seemed be prepared
> for big endian, but for tools, maybe not, i found lot of codes reading
> stuff from disk to memory without conversion in fsck.ocfs2. I am not
> sure about other tools, so may need do a full check.
> 
> Thanks,
> Junxiao.
>> 
>> 
>> Thanks a lot.
>> Gang 
>> 
>> 
>> 
>> 
>> _______________________________________________
>> Ocfs2-devel mailing list
>> Ocfs2-devel at oss.oracle.com 
>> https://oss.oracle.com/mailman/listinfo/ocfs2-devel 
>> 

[Ocfs2-devel] OCFS2 support which architectures and can the cluster work under mixed architectures?

[Junxiao Bi]

On 08/06/2015 01:49 PM, Gang He wrote:
> Hello Junxiao,
> 
> Thank for your information.
> 
> Is OCFS2 file system proved (or fully tested) only on x86 and x86_64 platform? 
I don't know this. We only used it on these two platform.
my understanding is right? that means we should not recommend OCFS2 file
sytem to the customers for being used under the other architectures in
production before we do a full testing?
I agree.

Thanks,
Junxiao.
> 
> 
> Thanks
> Gang 
> 

[Ocfs2-devel] OCFS2 support which architectures and can the cluster work under mixed architectures?

[Joseph Qi]

On 2015/8/6 13:26, Junxiao Bi wrote:
> Hi Gang,
> 
> On 08/06/2015 11:03 AM, Gang He wrote:
>> Hello guys,
>>
>> >From the document(https://oss.oracle.com/projects/ocfs2/), it says that OCFS2 supports x86, x86_64, ia64 and ppc64. I am not sure that this doc is up-to-date, now, OCFS2 supports any other architecture? e.g. s390x?
>> The second question, since OCFS2 is a cluster FS and support multiple architectures, can a OCFS2 cluster work under a mixed architectures environment? e.g. some nodes are x86, some nodes are ppc64.
> I think ocfs2 works good on le endian, but maybe not on big endian
> though i never test it. From the source code, kernel seemed be prepared
> for big endian, but for tools, maybe not, i found lot of codes reading
> stuff from disk to memory without conversion in fsck.ocfs2. I am not
> sure about other tools, so may need do a full check.
> 
Junxiao is right. Most tools are not taking care the endian conversion.
They just treat them as little endian which fits x86.
Maybe we have to do some changes for this.

Thanks,
Joseph
> Thanks,
> Junxiao.
>>
>>
>> Thanks a lot.
>> Gang 
>>
>>
>>
>>
>> _______________________________________________
>> Ocfs2-devel mailing list
>> Ocfs2-devel at oss.oracle.com
>> https://oss.oracle.com/mailman/listinfo/ocfs2-devel
>>
> 
> 
> _______________________________________________
> Ocfs2-devel mailing list
> Ocfs2-devel at oss.oracle.com
> https://oss.oracle.com/mailman/listinfo/ocfs2-devel
> 
> 

[Ocfs2-devel] OCFS2 support which architectures and can the cluster work under mixed architectures?

[Goldwyn Rodrigues]

On 08/06/2015 02:16 AM, Joseph Qi wrote:
> On 2015/8/6 13:26, Junxiao Bi wrote:
>> Hi Gang,
>>
>> On 08/06/2015 11:03 AM, Gang He wrote:
>>> Hello guys,
>>>
>>> >From the document(https://oss.oracle.com/projects/ocfs2/), it says that OCFS2 supports x86, x86_64, ia64 and ppc64. I am not sure that this doc is up-to-date, now, OCFS2 supports any other architecture? e.g. s390x?
>>> The second question, since OCFS2 is a cluster FS and support multiple architectures, can a OCFS2 cluster work under a mixed architectures environment? e.g. some nodes are x86, some nodes are ppc64.
>> I think ocfs2 works good on le endian, but maybe not on big endian
>> though i never test it. From the source code, kernel seemed be prepared
>> for big endian, but for tools, maybe not, i found lot of codes reading
>> stuff from disk to memory without conversion in fsck.ocfs2. I am not
>> sure about other tools, so may need do a full check.
>>
> Junxiao is right. Most tools are not taking care the endian conversion.
> They just treat them as little endian which fits x86.
> Maybe we have to do some changes for this.
>

OCFS2 supports big-endian architectures. There has been significant 
effort in making sure that it is big-endian compatible.

Though it is capable of running on mixed architectures, we do not 
recommend it.


-- 
Goldwyn