[Gluster-users] linux flash filesystems and GlusterFS

[Prasad, Nirmal]

Apostolos ,

Without knowing the true nature of the problem you wish to solve --  if you are looking to take a few embedded machines and build some kind of replicated distributed storage with gluster - the use of raw flash I don't quite understand -- you could use ramdisks on the targets and get speed, reliability and avoid component fatigue.

https://lists.gnu.org/archive/html/gluster-devel/2013-05/msg00118.html

-Nirmal

-----Original Message-----
From: gluster-users-bounces at gluster.org [mailto:gluster-users-bounces at gluster.org] On Behalf Of Apostolos Manolitzas
Sent: Thursday, April 10, 2014 10:07 AM
To: Ric Wheeler; gluster-users at gluster.org
Subject: Re: [Gluster-users] linux flash filesystems and GlusterFS

On 04/10/2014 03:16 PM, Ric Wheeler wrote:
> On 04/02/2014 03:40 AM, Apostolos Manolitzas wrote:
>> Hello all,
>>
>> I just discovered the GlusterFS while looking for a solution for high 
>> availability on our NAND flashes. We use ubifs 
>> <http://en.wikipedia.org/wiki/Flash_file_system#Linux_flash_filesyste
>> ms>
>> and jffs2
>> <http://en.wikipedia.org/wiki/Flash_file_system#Linux_flash_filesyste
>> ms> for filesystem and we would like to apply some high availability 
>> strategy to a part of the flash. So has anyone tested GlusterFS with 
>> this setup? Is it a viable solution or should we move to an upper 
>> layer solution?
>>
>> thanks for any opinion,
>>
>> -Apostolos
>
> I always start by asking what type of flash are you using - if you are 
> using PCI-e flash devices or S-ATA/SAS flash, there is no real reason 
> to use UBIFS or JFFS2 since the parts do wear levelling and so on 
> internally.
>
> For example, Google uses ext4 as their default file system for Android 
> phones and tablets.
>
> I don't know of anyone running gluster on raw flash backed file 
> systems (i.e., embedded systems) but that might be fun to try :)
>
> Ric
>
>
>
Hello,

unfortunately we "live" in an embedded world with no parts to do the wear leveling, so we were forced to use the UBI-FS.

Thanks for the answer, I think we have to do some tests in order to have a clear view.

-Apostolos



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