XFS & LVM: unexpected cp when issuing mv

[Alex Elder]

Michael Monnerie wrote:
> On Montag, 30. November 2009 Dave Chinner wrote:
>>> 1) why this happens
>> 
>> It happens if you move from one project directory heirarchy to
>> another - rename is not allowed across project quota boundaries as
>> the moved data has to be correctly attributed to the new project.
>> Hence it causes a mv to do a copy/unlink by returning a EXDEV error to the rename.
>> 
>>> 2) how I can prevent this?
>> 
>> You can't if you are moving from one project to another. If you
>> move within the project heirarchy, then it will be a rename as per
>> normal.
> 
> Shit. So I have to turn project quotas off. I can't accept the extra
> load for a simple move, as there are tons of data. Maybe the projet code
> could be redesigned to allow a simple move? Is it that complicated?
> 
> If I change from project to user quota - I guess the same would still
> happen? If so, I have to drop quota support, and build a script to check
> quotas manually. It's a pity. :-(

The quota inheritance property Dave described only applies
to project quotas, not group or user quotas.

					-Alex

> mfg zmi