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Groups > linux.debian.user > #179286
| From | David Wright <deblis@lionunicorn.co.uk> |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] |
| Date | 2017-03-24 22:40 +0100 |
| Message-ID | <toF6a-7By-25@gated-at.bofh.it> (permalink) |
| References | <tm0qt-7b2-1@gated-at.bofh.it> <tnZqh-36m-1@gated-at.bofh.it> <to80y-ML-25@gated-at.bofh.it> <to96h-1uL-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu 23 Mar 2017 at 11:29:38 (+0000), Brian wrote:
> On Thu 23 Mar 2017 at 10:12:57 +0000, Darac Marjal wrote:
>
> > On Wed, Mar 22, 2017 at 08:08:28PM -0500, Richard Owlett wrote:
> > >On 03/17/2017 08:47 AM, Richard Owlett wrote:
> > >>As I have limited bandwidth, I install from DVDs.
> > >>Also I frequently experiment with various options by doing a fresh
> > >>install to a different partition.
> > >>It is annoying to keep re-scanning a set of 13 DVDs.
> > >>Where is the information stored?
> > >>/etc/apt/sources.list is obvious, but where is the data about contents
> > >>of each DVD stored?
> > >>TIA
> > >
> > >It had been suggested that all the needed information might be in
> > >/etc/apt/sources.list
> > > PLUS
> > >the /var/lib/apt directory
> > >
> > >It ain't :{
> >
> > Looking at the source, apt-cdrom does a bunch of checks and then calls into
> > pkgCdrom::Add()[1]. That does some more checks and then the interesting
> > stuff seems to start around line 746.
> >
> > The Configuration Database (TODO: Find where this is stored... Ah, I *think*
> > that's the /var/lib/apt/cdroms.list mentioned earlier) is checked for
> > existance of the CD and updated, if necessary. The next interesting part is
> > at line 838 where the packages are copied. This seems to happen in
> > IndexCopy::CopyPackages()[2] which, at line 97, creates a file in
> > /var/cache/apt/archives/partial/ containing the contents of the cdrom.
> >
> > [1] http://sources.debian.net/src/apt/1.4~rc2/apt-pkg/cdrom.cc/
> > [2] http://sources.debian.net/src/apt/1.4~rc2/apt-pkg/indexcopy.cc/
> >
> >
> > So, in summary, I think you need /etc/apt/sources.list, /var/lib/apt *AND*
> > /var/cache/apt/archives.
>
> Suppose /var/cache/apt/archives is empty because 'apt-get clean' has
> been run. What then?
Good point. I noticed that the two .bin files in /var/cache/apt/ that
https://lists.debian.org/debian-user/2017/03/msg00722.html
mentioned, come and go with apt-get update and clean respectively.
I had overlooked how ephemeral they are. They're built from scratch at
the "Reading package lists... Done" line after the Fetched line.
If your only sources are the DVDs then I can't see a problem with just
adding those files (or whatever the names are of any files that
appear—they could differ with apt-cdrom) to your list of files you
(OP) share between systems. It's tricky to check what's actually
in them as they're binary databases (what I called "hidden"
information previously).
Cheers,
David.
Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-17 14:50 +0100
Re: Where is data stored when Synaptic scans DVDs? Jonathan Dowland <jmtd@debian.org> - 2017-03-17 15:30 +0100
Re: Where is data stored when Synaptic scans DVDs? songbird <songbird@anthive.com> - 2017-03-17 17:20 +0100
Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-17 21:40 +0100
Re: Where is data stored when Synaptic scans DVDs? Brian <ad44@cityscape.co.uk> - 2017-03-17 22:00 +0100
Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-17 23:30 +0100
Re: Where is data stored when Synaptic scans DVDs? GiaThnYgeia <GiaThnYgeia@openmailbox.org> - 2017-03-18 18:40 +0100
Re: Where is data stored when Synaptic scans DVDs? Brian <ad44@cityscape.co.uk> - 2017-03-18 19:00 +0100
Re: Where is data stored when Synaptic scans DVDs? GiaThnYgeia <GiaThnYgeia@openmailbox.org> - 2017-03-18 20:30 +0100
Re: Where is data stored when Synaptic scans DVDs? Brian <ad44@cityscape.co.uk> - 2017-03-19 00:20 +0100
Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-19 12:40 +0100
Re: Where is data stored when Synaptic scans DVDs? David Wright <deblis@lionunicorn.co.uk> - 2017-03-19 14:20 +0100
Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-19 15:00 +0100
Re: Where is data stored when Synaptic scans DVDs? David Wright <deblis@lionunicorn.co.uk> - 2017-03-20 05:30 +0100
Re: Where is data stored when Synaptic scans DVDs? Brian <ad44@cityscape.co.uk> - 2017-03-21 00:10 +0100
Re: Where is data stored when Synaptic scans DVDs? David Wright <deblis@lionunicorn.co.uk> - 2017-03-21 02:30 +0100
Re: Where is data stored when Synaptic scans DVDs? Brian <ad44@cityscape.co.uk> - 2017-03-21 21:40 +0100
Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-22 11:00 +0100
Re: Where is data stored when Synaptic scans DVDs? Lisi Reisz <lisi.reisz@gmail.com> - 2017-03-21 03:30 +0100
Re: Where is data stored when Synaptic scans DVDs? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-03-21 13:20 +0100
Re: Where is data stored when Synaptic scans DVDs? Lisi Reisz <lisi.reisz@gmail.com> - 2017-03-25 13:00 +0100
Re: Where is data stored when Synaptic scans DVDs? Curt <curty@free.fr> - 2017-03-18 19:10 +0100
Re: Where is data stored when Synaptic scans DVDs? David Wright <deblis@lionunicorn.co.uk> - 2017-03-18 04:50 +0100
Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-18 11:40 +0100
Re: Where is data stored when Synaptic scans DVDs? songbird <songbird@anthive.com> - 2017-03-18 19:40 +0100
Re: Where is data stored when Synaptic scans DVDs? deloptes <deloptes@gmail.com> - 2017-03-18 20:30 +0100
Re: Where is data stored when Synaptic scans DVDs? songbird <songbird@anthive.com> - 2017-03-19 04:00 +0100
Re: Where is data stored when Synaptic scans DVDs? Curt <curty@free.fr> - 2017-03-18 12:00 +0100
An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] Richard Owlett <rowlett@cloud85.net> - 2017-03-23 02:10 +0100
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] Brian <ad44@cityscape.co.uk> - 2017-03-23 10:50 +0100
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] Darac Marjal <mailinglist@darac.org.uk> - 2017-03-23 11:20 +0100
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] Brian <ad44@cityscape.co.uk> - 2017-03-23 12:30 +0100
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] David Wright <deblis@lionunicorn.co.uk> - 2017-03-24 22:40 +0100
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] Curt <curty@free.fr> - 2017-03-25 12:00 +0100
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] David Wright <deblis@lionunicorn.co.uk> - 2017-03-26 00:30 +0100
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] Curt <curty@free.fr> - 2017-03-26 13:40 +0200
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] David Wright <deblis@lionunicorn.co.uk> - 2017-03-28 04:50 +0200
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] Curt <curty@free.fr> - 2017-03-28 18:20 +0200
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] David Wright <deblis@lionunicorn.co.uk> - 2017-03-28 21:10 +0200
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] Brian <ad44@cityscape.co.uk> - 2017-03-29 20:20 +0200
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] Brian <ad44@cityscape.co.uk> - 2017-03-25 14:10 +0100
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] David Wright <deblis@lionunicorn.co.uk> - 2017-03-25 22:10 +0100
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] Richard Owlett <rowlett@cloud85.net> - 2017-03-26 14:30 +0200
Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?] Brian <ad44@cityscape.co.uk> - 2017-03-24 19:40 +0100
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