Found by the e2e restore scenario of the next commit: the Full backup
button answered 200 with ten bytes. The archive includes the Postfix
queue, Postfix keeps every queue file and directory readable by its own
user alone (not configurable), and the panel runs as its own user - the
walk stopped at /data/postfix/queue/active with "permission denied"
after the headers were out. So since the queue moved under /data in
1.3.0. Confirmed on the test server: selfpost-backup as root makes the
whole archive, the same command as user panel fails the same way.
Owner, 2026-10-11: the panel's archive comes without the queue.
- backup.Params.Unprivileged: the queue is left out, and so is a file
under certs/ that cannot be opened (the private key on the test
server is root and Postfix's group only), named through OnWarn. The
selfpost-backup command leaves it unset and takes both, as before.
- backup.Check reads through everything Create would archive, writing
nothing. The panel runs it before the first byte: a failure is a
message on the page, not a download cut short.
- The box, Help (design commit before this one) and the guide say what
the panel's archive leaves out; the guide's comparison table has rows
for the queue and the private key, and tells to put the key back
before starting a restored instance.
go vet ./internal/backup/ ./internal/web/handlers/: ok
go test ./internal/backup/ ./cmd/... ./internal/web/...: ok
make e2e on the test server, with the restore scenario: ok
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
mixandClaude Opus 5.5
8c9a71e6a0