** Description changed:
+ [Impact]
+
+ * Can only seed snaps from latest track, yet there is desire to support
+ "LTS" tracks.
+
+ * Add support for snap:$SNAP=$TRACK/$RISK/$BRANCH syntax in seeds, e.g.
+
+ ```
+ * snap:lxd=4.0/stable/ubuntu-20.10
+ ```
+
+ [Test Case]
+
+ * Use full-channel specification in the seed and test build ubuntu-
+ server, subproject live build.
+
+ [Regression Potential]
+
+ * Backwards compatible with existing seeds.
+ * New code only used when full channel is specified in the seed.
+
+ [Other Info]
+
+ * Original bug report
+
We have a bit of a problem right now with LXD in Ubuntu 20.04.
Users upgrading from 18.04 to 20.04 or those installing LXD through the
deb shim, will correctly detect that they are on a LTS and auto-select a
LTS branch of LXD (defaults to 4.0).
That's however not the case for the images we publish which all default
to "latest" and so currently pull in LXD 4.1 and soon 4.2.
+ This isn't good as the behavior we're aiming for is that LTS users
+ should get an LTS track of LXD (4.0) and non-LTS users should get the
+ latest track.
- This isn't good as the behavior we're aiming for is that LTS users should get
an LTS track of LXD (4.0) and non-LTS users should get the latest track.
-
-
- To fix this, we need to be able to specify a track/channel/branch alongside
the snap we want to seed and have livecd-rootfs pull that.
+ To fix this, we need to be able to specify a track/channel/branch
+ alongside the snap we want to seed and have livecd-rootfs pull that.
For LXD that would mean "lxd 4.0/stable/ubuntu-20.04" in focal and "lxd
latest/stable/ubuntu-20.10" on groovy. The exact syntax doesn't matter
and it's probably fair to assume that the ubuntu branch will exist so
won't need specifying.
-
- We would like this issue sorted in time for Ubuntu 20.04.1 so we have a good
consistent story for those upgrading and those deploying new systems at that
time.
+ We would like this issue sorted in time for Ubuntu 20.04.1 so we have a
+ good consistent story for those upgrading and those deploying new
+ systems at that time.
** Changed in: livecd-rootfs (Ubuntu Focal)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1882374
Title:
Support inclusion of snap from specific track/channel/branch
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