Re: snapshot-removal - timeline ?

[Andrey Kuzmin <andrey.v.kuzmin@gmail.com>]

On Wed, Aug 5, 2009 at 3:18 PM, Roy Sigurd Karlsbakk <roy@karlsbakk.net=
> wrote:
>
> On 4. aug.. 2009, at 20.33, Chris Mason wrote:
>
>>> It's strange that such a small thing should be delayed so much. If
>>> snapshot removal was working, I'm quite sure we might get more user=
s
>>> and thereby more stable code faster.
>>
>> It's a small feature but it gets deep into the difficult parts of th=
e
>> dentry cache to do it right. =A0So, it definitely isn't easy.
>
>
> I'd say it's a pretty elemetary feature to be able to remove somethin=
g you have created.

Snapshots are somewhat counter-intuitive in many respects: for
instance, one snapshot-capable file-system performs writes to  a
dataset with snapshots _faster_ than to the same dataset w/o
snapshots. Snapshot removal is no exception - it's a bit more complex
than one would think.

Regards,
Andrey

> I know, you can remove the files and so on, but still, having a bunch=
 of old and empty
> snapshots lying around is no good.


>
> roy
> --
> Roy Sigurd Karlsbakk
> (+47) 97542685
> roy@karlsbakk.net
> http://blogg.karlsbakk.net/
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> I all pedagogikk er det essensielt at pensum presenteres intelligibel=
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