Re: todolist

No, GFS on top of /tmpfs will not give us a shared memory  
implemetnation. But every cluster file system is also a distributed  
shared memory system, and all the algorithms and structures are in  
place to extend it to IPC.

Moshe


On Jul 26, 2006, at 11:17 AM, Matt Dew wrote:

> Moshe,
> Correct, it is a shared disk. However, no special equipment is  
> required.
> We set one up here pretty quickly, using AoE (ATA over Ethernet) with
> just an old computer sharing out a disk as a AoE device and  
> configuring
> GFS to use that device.
>
> AoE: http://www.linuxjournal.com/article/8149
>
> Using GFS on top of a tmpfs or ramdisk could give us shared memory
> support.  ???
>
> I don't know about iSCSI but given that GFS supports it and AoE,
> allowing for more than one underlying tech, I don't think it should be
> written off completely just yet.
>
> I'm know nothing of CFS, per Aneesh's email. It's always good to have
> options, and definitely worth looking into.
>
> My concern is the openmosix project maintaining a file system.  Let
> other, more interested and qualified people, do that.  We can focus on
> the goal of the project.
>
> My humble opinion,
> Matt
>
>
> On Sat, 2006-07-22 at 21:30 +0000, Moshe Bar  wrote:
>> GFS needs a shared disk device, which I am sure only few people have.
>
>> What we need in openMosix is an NFS of sort with shared mmap, link
>> consisteny and cache consistency.
>>
>> Moshe
>>
>>
>> On Jul 21, 2006, at 6:07 AM, Mike Wharton wrote:
>>
>>> This is not really a problem, well if it was I'm sure I could work
>>> around
>>> it. But I suspect GFS would be perfect for my (and most peoples)
>>> needs.
>>>
>>> Thanks,
>>> Mike
>>>
>>>
>>>> I believe GFS was chosen a while back, since it's a real cluster
>>>> filesystem.  You could use iSCSI (or whatever) underneath.
>>>>
>>>> I think GFS is limited to 256 computers.   Is this a problem?
>>>>
>>>> Carl, you were talking about 700 computers.
>>>>
>>>> Matt
>>>>
>>>> On Thu, 2006-07-20 at 17:03 +0000, Paul Bennett  wrote:
>>>>> I second Mike's request, although being a secure filesystem isn't
> a
>>>>> hard and fast requirement for me.  I'd really like to do
>>>>> something via
>>>>> iSCSI if that part matters.
>>>>>
>>>>> Thanks,
>>>>> Paul
>>>>>
>>>>> ----- Original Message ----
>>>>> From: Mike Wharton <[email protected]>
>>>>> To: openMosix-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
>>>>> Sent: Thursday, July 20, 2006 1:22:54 PM
>>>>> Subject: [Openmosix-devel] todolist
>>>>>
>>>>> Just a question, is there a wide need for an integrated
> filesystem?
>>>>> like Omfs but secure.
>>>>>
>>>>> This is a feature that could really benefit the work I do, as
>>>>> ideally
>>>>> for
>>>>> me processes after migrating from front 'master' node would never
>>>>> migrate
>>>>> back during their lifespan.
>>>>>
>>>>> I'm just interested to know if this is a problem for many others
> as
>>>>> well,
>>>>> and if not how people combat the file access of migrated processes
>>>>> under
>>>>> openmosix.
>>>>>
>>>>> Thanks,
>>>>> Mike
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
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