Re: what packages/files are in an ostree repo

[Colin Walters <walters verbum org>]

On Wed, Jan 21, 2015, at 12:38 PM, Chris Murphy wrote:
> Is there a way to find out what packages or files are in an ostree
> repo without downloading the contents? 

Not...conveniently at the moment, but it is possible.  If you want just the RPM database
from a remote repo, it's stored in /usr/share/rpm, and it is possible
to use "ostree pull" to pull just that subpath:

Note you can run all of this as non-root, assuming you made an archive-z2 (or bare-user) repo like this:
$ mkdir repo
$ ostree --repo=repo init --mode=archive-z2
$ ostree --repo=repo remote add --set=gpg-verify=false localrhel http://127.0.0.1/repo
$ ostree --repo=repo pull --subpath=/usr/share/rpm localrhel rhel-atomic-host/7/x86_64/standard
7 metadata, 13 content objects fetched; 5862 KiB transferred in 1 seconds

(This webserver is localhost, but as you can see we just downloaded 5MB)


$ ostree --repo=repo ls -R rhel-atomic-host/7/x86_64/standard /usr/share/rpm
d00755 0 0      0 /usr/share/rpm
-00644 0 0 1196032 /usr/share/rpm/Basenames
-00644 0 0   8192 /usr/share/rpm/Conflictname
-00644 0 0 319488 /usr/share/rpm/Dirnames
-00644 0 0   8192 /usr/share/rpm/Group
-00644 0 0  12288 /usr/share/rpm/Installtid
-00644 0 0  24576 /usr/share/rpm/Name
-00644 0 0   8192 /usr/share/rpm/Obsoletename
-00644 0 0 17735680 /usr/share/rpm/Packages
-00644 0 0 1437696 /usr/share/rpm/Providename
-00644 0 0 143360 /usr/share/rpm/Requirename
-00644 0 0  40960 /usr/share/rpm/Sha1header
-00644 0 0  24576 /usr/share/rpm/Sigmd5
-00644 0 0   8192 /usr/share/rpm/Triggername
$ ostree --repo=repo checkout -U --subpath=/usr/share/rpm rhel-atomic-host/7/x86_64/standard rpmdb
$ rpm --dbpath=$(pwd)/rpmdb -qa|grep release
redhat-release-atomic-host-beta-7.1-20150113.0.atomic.el7.4.x86_64
$

> For example
> http://rpm-ostree.cloud.fedoraproject.org/repo/ I just see a bunch of
> *filez objects but I have no idea if python-blivet is in the tree.

That repository is very old, and I'll likely delete it soon.  Use the Fedora Atomic 21 repository (and cloud 
image) as a reference.