snapshot.debian.org
Archives
Browse ftp archive snapshots from one of the following archives:
debian
debian-archive
debian-backports
debian-debug
debian-ports
debian-security
debian-security-debug
debian-volatile
Packages
source packages:
Search in the index of source packages:
lib-
lib1
lib2
lib3
lib6
liba
libb
libc
libd
libe
libf
libg
libh
libi
libj
libk
libl
libm
libn
libo
libp
libq
libr
libs
libt
libu
libv
libw
libx
liby
libz
binary packages:
lib+
lib-
lib0
lib1
lib2
lib3
lib4
lib6
liba
libb
libc
libd
libe
libf
libg
libh
libi
libj
libk
libl
libm
libn
libo
libp
libq
libr
libs
libt
libu
libv
libw
libx
liby
libz
Miscellaneous
older news
mailinglist
machine-usable interface
removal logs
snapshot.debian.org
The snapshot archive is a wayback machine that allows access to old
packages based on dates and version numbers. It consists of all
past and current packages the Debian archive provides.
The ability to install packages and view source code from any given date can be
very helpful to developers and users. It provides a valuable resource for
tracking down when regressions were introduced, or for providing a specific
environment that a particular application may require to run. The snapshot
archive is accessible like any normal apt repository, allowing it to be easily
used by all.
The Debian Project would like to thank
Glasklar Teknik AB
LeaseWeb Netherlands B.V.
and the
Wellcome Trust Sanger Institute
for providing hardware and hosting.
We would also like to thank the
Electrical and Computer Engineering
department at the University of British Columbia, Canada and
Nordic Gaming
for providing
hardware/hosting and hardware, respectively, in the past.
Usage
In order to browse snapshots of the archives kept on snapshot.debian.org, simply
follow the links on the top left. They will lead you to a list of months for
which data was imported, and the list entries in turn will point you to all
timestamps of a given month's snapshots.
For example,
/archive/debian/
shows that we have imports for the main Debian archive,
from 2005 until the present.
Picking October of 2009,
/archive/debian/?year=2009;month=10
provides us with a list of many different states of the debian archive, roughly spaced 6 hours apart
(the update frequency of ftp.debian.org at that time).
Following any of these links, say
/archive/debian/20091004T111800Z/
shows how
ftp.debian.org/debian
looked on the 4th of October 2009 at around 11:18 UTC.
If you want to add a specific date's archive to your apt
sources.list
simply
add an entry like these:
deb
lenny main
deb-src
lenny main
deb
lenny/updates main
deb-src
lenny/updates main
To access snapshots using https, you need to install the ca-certificates
package; with apt version earlier than 1.5~alpha1 you also need to install
the apt-transport-https package.
(Note that
also still works if you prefer.)
To learn which snapshots exist, i.e. which date strings are valid, simply
browse the list as mentioned above. Valid date formats are
yyyymmdd
hhmmss
or simply
yyyymmdd
. If there
is no import at the exact time you specified you will get the latest
available timestamp which is before the time you specified.
To access snapshots of suites using Valid-Until that are older than a dozen days,
it is necessary to ignore the Valid-Until header within Release files, in order
to prevent apt from disregarding snapshot entries ("Release file expired"). Use
aptitude -o Acquire::Check-Valid-Until=false update
or
apt-get -o Acquire::Check-Valid-Until=false update
for this purpose.
If you use at least apt version 1.1.exp9 (stretch and later), you can use this instead:
deb [check-valid-until=no]
lenny main
deb-src [check-valid-until=no]
lenny main
deb [check-valid-until=no]
lenny/updates main
deb-src [check-valid-until=no]
lenny/updates main
If you want anything related to a specific package simply enter the
source package name
in the form, or find it in the package index.
News
2024-10-08
After some time of trouble with imports lagging
behind,
Glasklar Teknik AB
generously offered to donate and host hardware for a new main site.
Earlier this year, a new 4U Supermicro with an AMD Epyc 24C/48T CPU,
512GB RAM, 10GE + 1GE NICs, SSD storage for the system and 480TB HDD
for storage of packages was purchased and set up. The HDD's are
organised in two RAID6 arrays with 11 x 20TB plus one spare 20TB drive
in each array, providing 2 x 164TB worth of storage.
The new server has no problems keeping up with importing the full
archives on every update as each run finishes comfortably in time
before it's time to run again. For example, the 'debian' archive which
is updated every six hours takes on average 11 minutes to
import. While the new server is the one doing all the importing of
updated archives, the HTTP interface (https://snapshot.debian.org/) is
being served by both the new server and one of the VM's at LeaseWeb.
Snapshot is currently holding 172TB of data.
Other recent changes include
A new API endpoint for listing all timestamps grouped by
archives (/mr/timestamp/) was added in August 2024.
The Netfilter rate limiting has been disabled. It will be
replaced by rate limiting on the HTTP layer, which should be
easier for clients to deal with.
Future outlook:
There is ongoing work to import all lost debian-ports
history.
A development and test system is being set up for a less
stressful develop/test/deploy cycle.
Replacing SHA-1 with SHA-256 for file identities is
planned. Old URLs with SHA-1 strings will keep working.
A reimplementation of the import scripts is being
considered. The rationale is that it should be easier to find
programmers who are comfortable with Python than what it is for
Ruby.
2022-09-28
In the last couple of weeks, the snapshot.debian.org web frontends were
updated from a pylons-based Python 2 application to a flask-based Python 3
application, thanks to work from Baptiste Beauplat.
Snapshot now carries about 135TB of data, and our generous sponsors at
Sanger
recently upgraded our storage so
the archive can keep expanding, as did
LeaseWeb
a couple of years ago.
2019-09-29
Earlier this month, the binary package
node-debbundle-acorn_6.2.1+ds+~0.4.0+~4.0.0+really4.0.0+~1.0.0+~5.0.1+ds+~1.7.0+ds+~0.1.1+~0.3.1+~0.2.0+~0.1.0+~0.3.0+~0.3.0-2_all.deb
was uploaded to the archive, breaking imports into snapshot due to the long
filename. The issue was
fixed
a few days later
by changing the data type in the database, but imports
between September 4 and September
unfortunately failed and these snapshots are lost.
Furthermore, the mirror of the
debian-debug
archive
that
snapshot.debian.org imports from failed to correctly update starting in June.
A symlink had been replaced with a directory causing rsync to fail the mirror
run. Since rsync failed, the mirroring script did then not trigger the snapshot
importer. The issue was reported on the mailinglist and fixed the same day.
Currently, snapshot consists of close to 90TB of data in about 35 million files
and storage capacity is becoming an issue again.
2018-02-13
Snapshot keeps growing. We are now at approximate 60TB of files. This
made it necessary to break up the RAID-1 mirror across two external
storage arrays which
Sanger
is kindly providing, and it also meant we needed more machines (now six) at our
mirrorsite, which
LeaseWeb
is generously
donating. Thanks!
2017-09-21
Imports of the debian-ports and debian-debug suite had failed for the last
three weeks as individual files in those archives have exceeded the size
representable in our database schema. We have now updated the database to
support file sizes up to 9,223,372,036,854,775,807 Bytes (2
63
-1; 8
EiB). Just like 640KB in ancient times, this will be truly sufficient
indefinitely.
2014-06-01
We added a cluster of machines generously provided by
LeaseWeb
to provide the snapshot.debian.org
service.
Snapshot used to run on two machines hosted at and provided by the
Wellcome Trust Sanger Institute
and by the
Electrical and Computer Engineering
department at the University of British Columbia, Canada. A few months ago,
the machine at UBC, named
stabile.debian.org
, started to die.
Since it was approaching its storage capacity limits anyway, we began looking
for a new second home for snapshot, and LeaseWeb offered! Providing snapshot
from two different places (now Sanger and LeaseWeb) allows us to survive
temporary and not-so-temporary issues that affect any single site.
Currently, snapshot consists of 24 terabytes of data in about 15 million files,
and it appears to be growing at a rate of approximately 5 terabytes a year (or
about 10 megabytes per minute).
2012-09-23
Just a quick datapoint: Currently snapshot has about 11 million files in a bit
over 16 terabytes of data.
2010-12-14
Around 2010-11-20 the server which hosted snapshot-master stumbled into
hardware issues. This did not affect the external storage but only the front-end
server. Since the master was down no new data was imported into the snapshot
system and the remaining mirror kept presenting its data as of the 20th.
Fortunately the people at the
Wellcome Trust
Sanger Institute
, which hosts snapshot-master, have been able to give us
a replacement machine quite quickly. Thanks!
While the master was down, snapshot information was collected by a non-public
backup system. This data has been integrated into snapshot.debian.org.
Unfortunately, one of the package pools,
debian-ports
, was not
archived on that secondary system, and for this archive we have no data
in the affected time period.
2010-09-07
Renamed the backports.org archive to debian-backports as it has now
moved
to debian.org infrastructure
. A rewrite rule has been put in place
so old URLs should continue to work (at least for HTTP clients that know
how to follow HTTP redirects).
2010-08-16
Set up a caching proxy in front of the two snapshot webservers. This will help
in cases where an entire organisation uses various apt sources.list entries on
a lot of their machines.
Usually such entities would use proxy caches like squid and then there is no
problem, assuming the cache works correctly. Unfortunately apt-cacher, apparently
a common choice which is supposed to be smarter for debian archives, completely ignores the
Cache-Control headers that snapshot sends and hits this service for all
requests made to anything under
dist/
. A single
apt-get
update
can cause up to a few dozen of such requests and when multiplied
by scores of machines - all running the update at the same time - this caused
the snapshot backend to run into limits. Now such requests won't hit the backend
any more.
2010-04-12
Publicly
announce the snapshot.debian.org service
. Yay.
For older entries see
the older news page
Application Developed by Peter Palfrader — Web/Graphics designed by Bernhard Weitzhofer
Source code can be cloned with
git clone
or browsed directly on
salsa.debian.org
Please
report bugs
against the
snapshot.debian.org package
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