Re: Ceph iSCSI is a prank?

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My thought is that in 4 years you could have migrated to a hypervisor that will have better performance into ceph than an added iSCSI layer. I won't deploy VMs for ceph on anything that won't allow librbd to work. Anything else is added complexity and reduced performance.

On Wed, Feb 28, 2018, 11:49 AM Jason Dillaman <jdillama@xxxxxxxxxx> wrote:
On Wed, Feb 28, 2018 at 9:17 AM, Max Cuttins <max@xxxxxxxxxxxxx> wrote:
> Sorry for being rude Ross,
>
> I follow Ceph since 2014 waiting for iSCSI support in order to use it with
> Xen.

What OS are you using in Dom0 that you cannot just directly use krbd?
iSCSI is going to add an extra hop so it will never be able to match
the performance of something that is directly talking to the OSDs.

> When finally it seemds it was implemented the OS requirements are
> irrealistic.
> Seems a bad prank. 4 year waiting for this... and still not true support
> yet.
>
>
>
>
>
> Il 28/02/2018 14:11, Marc Roos ha scritto:
>>
>>   Hi Massimiliano, have an espresso. You know the indians have a nice
>> saying
>>
>> "Everything will be good at the end. If it is not good, it is still not
>> the end."
>>
>>
>>
>> -----Original Message-----
>> From: Massimiliano Cuttini [mailto:max@xxxxxxxxxxxxx]
>> Sent: woensdag 28 februari 2018 13:53
>> To: ceph-users@xxxxxxxxxxxxxx
>> Subject: Ceph iSCSI is a prank?
>>
>> I was building ceph in order to use with iSCSI.
>> But I just see from the docs that need:
>>
>>         CentOS 7.5
>>         (which is not available yet, it's still at 7.4)
>>         https://wiki.centos.org/Download
>>
>>         Kernel 4.17
>>         (which is not available yet, it is still at 4.15.7)
>>         https://www.kernel.org/
>>
>> So I guess, there is no ufficial support and this is just a bad prank.
>>
>> Ceph is ready to be used with S3 since many years.
>> But need the kernel of the next century to works with such an old
>> technology like iSCSI.
>> So sad.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
> _______________________________________________
> ceph-users mailing list
> ceph-users@xxxxxxxxxxxxxx
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com



--
Jason
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