Re: possible to seek in lftp?

Alexander V. Lukyanov schreef op 09-10-2017 14:59:
> On Mon, Oct 09, 2017 at 10:49:16AM +0200, Xen wrote:
>> Xen schreef op 08-10-2017 16:32:
>> 
>> > Is there any way to prevent it from seeking?
>> 
>> I meant with the title of course:
>> 
>> 
>> 
>> Is it possible to stop seeking in lftp?
> 
> Currently it is not possible. For that to be possible, lftp should 
> buffer
> some data in memory even after it was sent to the server (until
> acknowledged). The exact amount is unknown, so a new setting would be
> needed.

What was so strange is that it happened at the exact same spot every 
time.

Basically at this point I have uploaded some 530GB and it only happened 
once at the same time.

But anyway I found a different ftp client that will work natively with 
pipes, at first I couldn't get it to work because the server was rather 
difficult and only lftp worked by default.

Turns out I could disable some commands in that client that made it 
choke (this was ncftpput) and now it appears to be working but at 
present lftp is still chugging away ;-).

The first time I was testing this it also uploaded about I don't know, 
say 400 GB without choking once. Then I repeated it with a different 
snapshot (it is backups based off snapshots) of the same volume and 
suddenly it would choke at one particular point every time I tried.

My backup script can switch to smb (I had to do that manually now) so I 
uploaded one chunk by smb/cifs and lftp has basically done most of the 
rest after that.

But anyway, thank you for your comments.

I could get around it by saving the chunks first on disk but as this 
would mean 2x the amount of writing (save using tee) and therefore a lot 
of seeking on the disk, unless I use secondary storage for that which is 
a bit impossible unless I use USB and USB disks would be way too big for 
this so it would have to be a USB stick which don't have good write 
longevity.

But anyway,

Thanks for the response :).

Regards.
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