When it fails

a log to a usual cause to the page that names it

When it fails: the log, then the page that already named that cause.

log to cause to fix

When it fails: the log, then the page that named that cause.

usual fail causes: pin, versionsuffix, isolation, checksum

When it fails, the log names a stage. The usual causes are a pin, a suffix, isolation, or bytes.

Parameters that are misread cause the greatest time consumption. The log shows that the file is not the problem.