On 11/20/19 1:51 PM, Mark Millard wrote:
Bob P. wrote for an aarch64 context:
From time to time it would be handy to revert freebsd-current to
an older, well-behaved revision.
Is there a mechanism for identifying revision numbers that
will at least compile and boot, by date?
In my case buildworld seems to be markedly slower than, say,
six months ago. Maybe it's hardware, maybe something else. Is
there a way to pick a revision number to revert to, that's
better than merely guessing?
You can explore the history of installable world/kernel materials
at places matching the pattern:
https://artifact.ci.freebsd.org/snapshot/head/r*/arm64/aarch64/*
I find that https://svnweb.freebsd.org/base/ is good enough to allow
exploration of revisions. If you add a revision in the given field you
will only see revs show up that are older than that.
Some r* will exist without having arm64/aarch64 material but having
mateirals for other platforms. The * matches a svn revision number.
These are from ci.freebsd.org builds, not the announced/released
snaphots. These go back a long ways. ci.freebsd.org does not try
to build every svn revision. (It does not build that fast relative
to svn updating.)
I sometimes use these for approximate bisection without building.
The https://artifact.ci.freebsd.org/snapshot/head/r*/arm64/aarch64/*
materials are compressed tar archives (*.txz) and a MANIFEST file.
bsdinstall uses these files, although I've at times done basic
testing activities based on just manually expanding the tars.
(The materials do not span u-boot or other such and need to have
file system(s) to expand into.)
(From a different message:)
I hoped for a more mechanical approach. For example, snapshots are
generated from time to time. Presumably, they're vetted in some way
and knowing what revisions made it to the snapshot stage might be a
starting point. The snapshot server does not appear to contain that
information for earlier offerings.
Snapshots are not vetted as far as I know --and sometimes do not boot
in contexts that I've tried. This applies both to artifact.ci.freebsd.org
materials and the announced snapshots put under
https://download.freebsd.org/ftp/snapshots/ .
===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
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