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Re: Jigdo (was "Putting It All On a Stick")



Hi,

Steve Matzura wrote:
> When I run the script that controls things,

On a Debian 8 system i did

  apt-get install jigdo-file

  jigdo-lite http://cdimage.debian.org/debian-cd/8.2.0/amd64/jigdo-bd/debian-8.2.0-amd64-BD-1.jigdo

(It is the first time i do this. Normally i wget netinst ISOs.
 On the other hand i have possibly too much internal knowledge
 about the Jigdo format. This might scare away normal user bugs.)

When inflating the template it established a 20+ GB file on my
hard disk. Now it is busily downloading .deb files and puts
them into the holes of the template.
Network throughput with

  http://ftp.de.debian.org/debian/

is about 80 percent of the local maximum. ETA 4+ hours if not
Deutsche Telekom cuts the line or many small packages are to be
downloaded.


> --10:22:42--
> http://debian.mirrors.pair.com/pool/main/a/analog/analog_6.0-20+b2_amd64.deb
>            =>
> `debian-8.2.0-amd64-BD-1.iso.tmpdir/debian.mirrors.pair.com/pool/main/a/anal
> og/analog_6.0-20+b2_amd64.deb'
> Connecting to debian.mirrors.pair.com[216.92.2.148]:80... connected.
> HTTP request sent, awaiting response... 404 Not Found
> 10:22:42 ERROR 404: Not Found.

Mine says things like

  --2015-12-30 17:53:16--  http://ftp.de.debian.org/debian/pool/main/k/kdepimlibs/libkcal4_4.14.2-2+b1_amd64.deb
  Reusing existing connection to ftp.de.debian.org:80.
  HTTP request sent, awaiting response... 200 OK
  Length: 369588 (361K) [application/x-debian-package]
  Saving to: ‘debian-8.2.0-amd64-BD-1.iso.tmpdir/ftp.de.debian.org/debian/pool/main/k/kdepimlibs/libkcal4_4.14.2-2+b1_amd64.deb’
  debian-8.2.0-amd64- 100%[=====================>] 360.93K   513KB/s   in 0.7s

  2015-12-30 17:53:16 (513 KB/s) - ‘debian-8.2.0-amd64-BD-1.iso.tmpdir/ftp.de.debian.org/debian/pool/main/k/kdepimlibs/libkcal4_4.14.2-2+b1_amd64.deb’ saved [369588/369588]


4.5 hours after begin of the run, it now says

  69%15163392k/21929826kverifying image
  ...
  Finished!
  ...
  OK: Checksums match, image is good!   

The image has 22456141824 bytes.
My own md5sum result is ... will really soon be ... 
  6e8f1f1da2c530cef47048612013028b  debian-8.2.0-amd64-BD-1.iso

This matches
  http://cdimage.debian.org/debian-cd/8.2.0/amd64/jigdo-bd/MD5SUMS

All is well.
Some trash remains to be removed in the local directory
  debian-8.2.0-amd64-BD-1.jigdo
  debian-8.2.0-amd64-BD-1.template
  jigdo-file-cache.db


> http://atterer.org/sites/atterer/files/2009-08/jigdo/jigdo-win-0.7.2.zip

> > What is the maximum download file size specification for the program?

> Don't know. Where would I find that?

http://atterer.org/jigdo says that
"This version is capable of creating DVD-sized images on NTFS
 partitions (FAT32 only supports sizes up to 4 GB)."

It makes this obscure demand:
"In case you use WinZip, click on "Extract" and select
 "Use folder names", don't just drag the files to a directory."

Well, if a filesystem can take files larger than 4 GiB, then
there is few reason to expect a limit at 22 GiB.


Have a nice day :)

Thomas


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