[ZODB-Dev] Repozo tests -- not

[Christian Theune]

On 12/09/2009 12:06 AM, Shane Hathaway wrote:
> Daniel Kraft wrote:
>> Jim Fulton wrote:
>>> On Tue, Dec 8, 2009 at 1:49 PM, Benji York<benji at zope.com>  wrote:
>>>> Any incomplete writes that are in progress at the time of the copy will
>>>> simply be ignored when the resulting backup is opened later.
>>> Note that this assumes that you are using a straightforward linear copy.
>>> rsync would likely produce unpredictable results.
>>
>> Every modern volume manager or whatever supports snapshotting a
>> filesystem. A snapshot is a good-enough synchonous copy. You simply
>> store its contents to somewhere and you're done, even with blobstorage.
>
> Very good point.  Tools like LVM and ZFS probably make repozo obsolete.

Not exactly: it's still a good idea to store away deltas as single large 
files are still hard to deal with except if you have really good 
block-level de-duplication in your filesystem. (Uhmm. I guess ZFS 
probably has all of that. It also probably serves my dinner.)

Christian

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