duplicity-team team mailing list archive

[Kenneth Loafman <kenneth@xxxxxxxxxxx>]

The size info is the problem.  Each backend returns a list of filenames, but
getting size info is problematic.  That's going to be a major piece of work
to get that info.

Downloading the file is not a good idea.  Performance would take a serious
hit, i.e. double the time for backups.  If we could get file size info, we
would know that the sizes were correct, and that's what we need.

My guess is that the zero length files are really the last file transmitted
before a backup failed.  Getting file sizes would help in proving this.

...Ken

On Tue, Aug 23, 2011 at 1:02 PM, Michael Terry
<michael.terry@xxxxxxxxxxxxx>wrote:

> That is a good and sensible idea, but the current backend.list architecture
> isn't well suited for that, performance wise.
>
> (A) We can't ask for information about just one file, we have to list all
> files each time
> (B) We can't ask for size information.  We'd have to download the file
> again.
>
> Both could be solved by after each upload, just downloading the file again
> and comparing to the original to 'prove' the round trip worked.  That's a
> decent idea, actually, just seems a lot less performant.
>
> I could whip that up, depending on interest.  Ken?
> --
>
> https://code.launchpad.net/~mterry/duplicity/early-catch-498933/+merge/72607<https://code.launchpad.net/%7Emterry/duplicity/early-catch-498933/+merge/72607>
> Your team duplicity-team is requested to review the proposed merge of
> lp:~mterry/duplicity/early-catch-498933 into lp:duplicity.
>
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-- 
https://code.launchpad.net/~mterry/duplicity/early-catch-498933/+merge/72607
Your team duplicity-team is requested to review the proposed merge of lp:~mterry/duplicity/early-catch-498933 into lp:duplicity.