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Make the libvirt trace compact: libvirt API names, one error field, terse test output

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The first live run showed the trace working but noisy: testr printed
ts/level/msg and the per-run constants on every line, the error text
appeared twice, host appeared twice on image-cache lines, and the Go
method name was less useful than the libvirt function it maps to.

The tracer now logs rpc=virDomainLookupByName (go-libvirt's names are the
public API names without the vir prefix), error plus libvirtError (code
name) and libvirtCode, and image.go stops re-adding host. The integration
test replaces testr with a compact logr sink: time, logger name, the rpc
as headline, then fields, with provider/host/name omitted since the first
line of the run states them. Docs and execution log updated.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
kacerr
2026-09-10 19:13:51 +00:00
co-authored by Claude Fable 5.1
parent f50d30e58e
commit 5a6c889531
11 changed files with 165 additions and 46 deletions
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docs/testing.md
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@@ -120,11 +120,13 @@ verified — the log says so), `KVM_TEST_IMAGE_SHA256`, `KVM_TEST_POOL`
`20m`, must cover the first-time image download), `KVM_TEST_KEEP`
to leave the VM behind for `virsh console` when something goes wrong,
and `KVM_TEST_LOG_LEVEL` (default `1`) for how much of the provider's
logging the `-v` output shows: at `1` every libvirt RPC is one
`libvirt call` line with method, identifiers, duration and error code,
interleaved with the test's own `t.Log` lines; `2` adds the domain and
volume XML, metadata and addresses; `0` leaves only `t.Log`. See the
Logging section of [kvm-provider.md](kvm-provider.md#logging).
logging the `-v` output shows: at `1` every libvirt RPC is one compact
line (`HH:MM:SS.mmm libvirt virDomainLookupByName domain=... duration=...
error=... libvirtError=ErrNoDomain`), interleaved with the test's own
`t.Log` lines; `2` adds the domain and volume XML, metadata and
addresses; `0` leaves only `t.Log`. The per-run constants (provider,
host, domain name) are left off each line. See the Logging section of
[kvm-provider.md](kvm-provider.md#logging).
What one run asserts, in order: `New` dials the host; `Create` returns a
`hosts/<host>/domains/<name>` ID (downloading the image on a cold host —