Re: Is cloning the same as copying in APFS?
Re: Is cloning the same as copying in APFS?
- Subject: Re: Is cloning the same as copying in APFS?
- From: Rick Mann <email@hidden>
- Date: Mon, 26 Jun 2017 19:38:34 -0700
I'm not talking about Time Machine. My code allows the user to duplicate data,
and thus it duplicates the files o the disk. A lot of the files referenced by
the model are immutable, and so a clone/lazy copy is ideal.
But there's actually a POSIX "clone" API, and so I wonder if a copy is
different from a clone.
> On Jun 26, 2017, at 19:17 , Sandor Szatmari <email@hidden>
> wrote:
>
> Are you talking about just a regular old copy or a copy in the sense of a
> time machine backup? Are these behaviors different on APFS?
>
> The ADC video Quincey referred to a couple of weeks ago talked about
> references to files being created (lazy copies). Only when the blocks
> associated with the newest reference are altered would any actual copying of
> actual data be done.
>
> Is this the behavior your referring to?
>
> Sandor
>
>> On Jun 26, 2017, at 21:34, Rick Mann <email@hidden> wrote:
>>
>> If I use NSFileManager to make a copy on an APFS volume, will it make a
>> clone underneath?
>>
>> Is there a Cocoa API for cloning?
>>
>>
>> --
>> Rick Mann
>> email@hidden
>>
>>
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Rick Mann
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