Re: Speeding up slooooowwww extractions

[hvjunk <hvjunk@gmail.com>]

Yeah,

 Perhaps a big feature request for Tarsnap N+1: small (Like 1MB??) block requests per file - would assist greatly in restoring big files when we could parallel run multiple tarsnap instances. 

 Another “Request” - File Checksums (SHA256/etc.) in the ‘-tv’ (or -tvv) output - that way I can check whether the backed up / stored file in the archive is similar to the one on disk - especially usefull when doing things like the above, and then with a -tvvv each block’s checksum


> On 26 May 2021, at 23:02 , Graham Percival <gperciva@tarsnap.com> wrote:
> 
> On Wed, May 26, 2021 at 10:35:37PM +0200, Scott Wheeler wrote:
>> 
>>> On 26 May 2021, at 22:19, hvjunk <hvjunk@gmail.com> wrote:
>>> 
>>> --fast-read also not the next issue… but yeah, looks like that latency is the killer for my use case ;(
>> 
>> I don’t think latency is the issue:
> 
> Colin specifically says that latency is the problem:
> https://mail.tarsnap.com/tarsnap-users/msg00301.html
> https://news.ycombinator.com/item?id=13505460
> (slightly more info in the second link)
> 
> NB: despite my email address, I have no knowledge of the server side of
> tarsnap.
> 
> - Graham