## Joe Conway (mail@joeconway.com):
> However there is a period of time after pg_start_backup() is first
> executed to when it completes, during which backup_label file does not
> exist yet, but the backup has essentially been started. Is there any
> way to detect this state?
When I did some research on the very same question just a few weeks
ago, I settled for external locks (lockfile, pg_advisory_lock(), ...,
depending on your exact situation) around the backup-taking code.
Regards,
Christoph
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