repozo -B twice in quick succession may produce a broken backup; repozo -R will not notice

Bug #906058 reported by Marius Gedminas
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
ZODB
New
Undecided
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Bug Description

Two frequent runs of repozo -B may create a .fs and a .deltafs with the same timestamp, which condition then causes repozo -R to silently produce a corrupt (truncated) Data.fs.

If there's a timestamp collision between two .deltafs files, repozo -B aborts with an error, which is fine by me.

To reproduce:

  git clone git://github.com/mgedmin/repozo-testcases.git
  cd repozo-testcases
  make test1

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