You're correct that you restart the same way as the initial command. 

If the resulting file ends in .part, it is incomplete; if the file has the full 
name you specified for it without the .part, it is complete. (Standard advice 
to check by restoring from it applies. :)


-M

On Wed, Mar 19, 2014 at 7:39 AM, John Gamble <[email protected]> wrote:

> Hi Marc,
> Thanks for your reply and apologies for not noticing that bit in the manual.  
> So if I've understood it properly, the answer is yes, Tarsnap can re-start a 
> partial archive.  I guess the command to re-start would be exactly the same 
> as the initial command.  Would that be a fair assumption?
> If this isn't a completely thick question, how would I know the archive was 
> now whole and complete?  That is, no data missing or lost?
> Regards,
> John
> ##
> On 19 Mar 2014, at 14:31, Marc Hedlund <[email protected]> wrote:
>> See "INTERRUPTING ARCHIVAL" at http://www.tarsnap.com/man-tarsnap.1.html
>> 
>> 
>> -M
>> 
>> 
>> On Wed, Mar 19, 2014 at 7:28 AM, John Gamble <[email protected]> wrote:
>> Can anyone advise on the following please?
>> 
>> In the event that a backup gets interrupted - either by technical problems 
>> or because it's taking so long and I want to switch off my computer - is 
>> Tarsnap able to pick up where it left off once the connection is 
>> re-established?  Or would I have to start the backup all over again?
>> 
>> What would be the command for re-starting an interrupted backup?
>> 
>> Thanks for any advice on this matter.
>> 
>> Best wishes,
>> 
>> John Gamble
>> 
>> 
>> 
>> 
>> -- The Wellcome Trust Sanger Institute is operated by Genome Research 
>> Limited, a charity registered in England with number 1021457 and a company 
>> registered in England with number 2742969, whose registered office is 215 
>> Euston Road, London, NW1 2BE. 
>> 
> --------------------
> John Gamble
> Senior Computer Biologist
> Cancer Genome Project
> Wellcome Trust Sanger Institute
> Cambridge,  UK
> CB10 1SA
> Tel: +44 (0)1223 - 834244
> Ext: 7703
> [email protected]
> -- 
>  The Wellcome Trust Sanger Institute is operated by Genome Research 
>  Limited, a charity registered in England with number 1021457 and a 
>  company registered in England with number 2742969, whose registered 
>  office is 215 Euston Road, London, NW1 2BE. 

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