[Gluster-devel] GlusterFS 3.0pre1 (Whats in 3.0)

[Harshavardhana]

On Tue, Nov 3, 2009 at 6:21 AM, Gordan Bobic <gordan at bobich.net> wrote:

> On 02/11/2009 21:18, Anand Babu Periasamy wrote:
>
>> Gordan Bobic wrote:
>>
>>> It would appear that this requires fuse-devel to build, at least as an
>>> RPM. My understanding was that 3.0 doesn't require fuse libraries and
>>> talks directly to the kernel module. Is that an error in my
>>> understanding or an error in the spec file for building the RPMs?
>>>
>>
>  Hi Gordan, you are correct. GlusterFS 3.0 does not require fuse library.
>> It directly talks
>> to fuse kernel module. Csaba Henk (fuse maintainer) implemented this
>> functionality.
>> He is part of GlusterFS team, dedicated to enhancing fuse kernel module.
>> This approach
>> makes installation relatively easier and improves performance as well.
>>
>
> So why does it require the fuse package to install and fuse-devel to build?
>
> Well Gordan problem is ours, thanks for pointing it .. it needs to be
fixed. fuse-devel
is not a requirement.

>
>  Key highlights of 3.0 are
>> * Background self-healing: Applications won't be blocked any more during
>> healing operation.
>> * Checksum based healing: Rsync like healing mechanism to heal only the
>> inconsistent blocks within a file.
>> * Healing on the fly: Files can be healed even when the files are open
>> and application is performing active I/O.
>> * Generation numbers: Self-healing can now reliably handle tricky corner
>> cases (such as "rm -rf" bug).
>>
>
> Thanks, I already got a blurb on the subject from Harsha last week. :)
>
>
>  All of the above are very useful in a virtualization and database
>> environment, where files
>> are very large and applications need to run non-stop.
>>
>
> I'd still say that healing on open files should be been a requirement for
> 1.0, not to mention outright erroneous behaviour (the mentioned rm -rf bug).
> But better late than never. ;)
>
> I'll check the bugs I reported against 2.0.x this week and report back on
> how many of them don't show up any more.
>
> Thanks

Harshavardhana

> Gordan
>
>
>
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