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RE: XFS & LVM: unexpected cp when issuing mv

To: "Michael Monnerie" <michael.monnerie@xxxxxxxxxxxxxxxxxxx>, "Dave Chinner" <david@xxxxxxxxxxxxx>
Subject: RE: XFS & LVM: unexpected cp when issuing mv
From: "Alex Elder" <aelder@xxxxxxx>
Date: Mon, 30 Nov 2009 08:21:01 -0600
Cc: <xfs@xxxxxxxxxxx>
In-reply-to: <200911301442.20807@xxxxxx>
Thread-index: AcpxxWMBEDH35jIhTzGzwLFDY/XIcgAAtyiw
Thread-topic: XFS & LVM: unexpected cp when issuing mv
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.


> mfg zmi

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