Re: "This is a bug."

[Eric Sandeen <sandeen@xxxxxxxxxxx>]

On 9/10/15 1:03 PM, Tapani Tarvainen wrote:
> On Thu, Sep 10, 2015 at 01:55:58PM -0400, Brian Foster (bfoster@xxxxxxxxxx) 
> wrote:
> 
>>>> So that's a 6TB fs with over 24000 allocation groups of size 256MB, as
>>>> opposed to the mkfs default of 6 allocation groups of 1TB each. Is that
>>>> intentional?
>>>
>>> Not to my knowledge. Unless I'm mistaken, the filesystem was created
>>> while the machine was running Debian Squeeze, using whatever defaults
>>> were back then.
> 
>> Strange... was the filesystem created small and then grown to a much
>> larger size via xfs_growfs?
> 
> Almost certainly yes, although how small it initially was I'm not
> sure.

Oof; with a default of 4 AGs that means that this filesystem was likely
grown from 1G to 6T.

Like Brian says, that is definitely not recommended.  ;)

-Eric