[CentOS] fs for > 16 TiB partition

Wed May 6 09:30:25 UTC 2009
Rainer Duffner <rainer at ultra-secure.de>

Adrian Sevcenco schrieb:
> Rainer Duffner wrote:
>   
>> Adrian Sevcenco schrieb:
>>     
>>> Hi,
>>> What would you recommend as an FS for an partition greater than 16 TiB?
>>> This is for an production server (that is, no ext4 recommendations
>>> please :) )
>>> What experiences did you had with your preferred FS ? (good and not so
>>> good points)
>>>
>>> Thank you,
>>> Adrian
>>>   
>>>       
>> Does anybody actually run such a thing on Linux?
>>     
> We will .. 

That's not what I was asking ;-)


> 2 X RAID6 each with 12 drives (24 drives machine)
> with 2 TB drives .. that is 20 TBs each volume
>
>   
>> How long does a FSCK take once it's 80% populated?
>>     
> i strongly hope that i will never know :))
>   

It will fsck every n'th reboot anyway, or after so-and-so many days
without fsck, after a reboot.

> it have 2 redundant PSU each on different ups ...
>
>   
>> How much RAM does that need?
>>     
> minimal .. is an storage only machine so 4 GB is enough as the
> connection is only GigE
>
>   

I asked about the FSCK.
Usually, it requires some RAM, too.


>> The FSCK on my Virtuozzo-partition takes long enough - and it's only 500
>> GB or so.
>>     
> Even for home its efficient to have an ups for each machine..
>   


It's running in a datacenter with UPSs. But once I reboot it, it it's
the "fsck-every-n-days" thing.

I don't think it's a good idea to disable that behaviour.




Rainer