Re: cephfs-fuse: set/getfattr, change pools

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On Tue, Feb 3, 2015 at 1:30 PM, John Spray <john.spray@xxxxxxxxxx> wrote:
> On Tue, Feb 3, 2015 at 10:23 PM, Gregory Farnum <greg@xxxxxxxxxxx> wrote:
>>> If you explicitly change the layout of a file containing data to point
>>> to a different pool, then you will see zeros when you try to read it
>>> back (although new data will be written to the new pool).
>>
>> That statement sounds really scary. To reassure people: you can't
>> actually change layout on a file which has already been written to!
>> Trying to do so will return an error code; actually changing the
>> layouts and seeing this result would require manually mucking around
>> with RADOS data underneath the MDS.
>
> Ah, in that case I think we need to open a ticket because my comment
> was based on trying it out, and it definitely did let that happen!

...
Yes please!

I wonder when that got broken. Apparently we need some tests for
layout manipulation. D:
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