[ale] Duplicity very slow

[Scott Plante]

You said you didn't have to use NTFS, so how about keeping your rsync and use an encrypted Linux filesystem on the flash drive? 
Scott 


e.g. https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_a_non-root_file_system 

----- Original Message -----

From: "Edward Holcroft" <eholcroft at mkainc.com> 
To: "Atlanta Linux Enthusiasts" <ale at ale.org> 
Sent: Wednesday, April 22, 2015 4:55:48 PM 
Subject: Re: [ale] Duplicity very slow 



Maybe I should bite the bullet, do a full backup for as long as it takes, and then see how long a differential takes. If differentials are reasonably quick, then I don't have a problem ... I guess. Maybe it is just to do with those initial calcs ... still, compared to plain old rsync, seems a heavy price to pay for just adding encryption. 


ed 


On Wed, Apr 22, 2015 at 4:21 PM, James Sumners < james.sumners at gmail.com > wrote: 



I don't know. It is calculating and bookkeeping a lot of information. I have a similarly sized data set that initially took a few hours to backup, but last night the differential finished like so: 


Last full backup date: Wed Feb 11 03:00:02 2015 


--------------[ Backup Statistics ]-------------- 
StartTime 1424592003.05 (Sun Feb 22 03:00:03 2015) 
EndTime 1424592518.80 (Sun Feb 22 03:08:38 2015) 
ElapsedTime 515.75 (8 minutes 35.75 seconds) 
SourceFiles 460585 
SourceFileSize 55388454783 (51.6 GB) 
NewFiles 648 
NewFileSize 192290501 (183 MB) 
DeletedFiles 1418 
ChangedFiles 263 
ChangedFileSize 409429060 (390 MB) 
ChangedDeltaSize 0 (0 bytes) 
DeltaEntries 2329 
RawDeltaSize 192139628 (183 MB) 
TotalDestinationSizeChange 33816251 (32.2 MB) 
Errors 0 
------------------------------------------------- 





On Wed, Apr 22, 2015 at 3:08 PM, Edward Holcroft < eholcroft at mkainc.com > wrote: 

<blockquote>



This is what I got local drive to local drive test (no USB involved). This seems impossibly slow. 


StartTime 1429713308.46 (Wed Apr 22 10:35:08 2015) 
EndTime 1429728281.54 (Wed Apr 22 14:44:41 2015) 
ElapsedTime 14973.08 (4 hours 9 minutes 33.08 seconds) 
SourceFiles 52736 
SourceFileSize 98274663358 (91.5 GB) 
NewFiles 52736 
NewFileSize 98274663358 (91.5 GB) 
DeletedFiles 0 
ChangedFiles 0 
ChangedFileSize 0 (0 bytes) 
ChangedDeltaSize 0 (0 bytes) 
DeltaEntries 52736 
RawDeltaSize 98251115454 (91.5 GB) 
TotalDestinationSizeChange 92760516730 (86.4 GB) 
Errors 0 







-- 





James Sumners 
http://james.sumners.info/ (technical profile) 
http://jrfom.com/ (personal site) 
http://haplo.bandcamp.com/ (band page) 
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