RingBuilder.save isn't atomic

Bug #1693149 reported by clayg on 2017-05-24
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
OpenStack Object Storage (swift)
Wishlist
Unassigned

Bug Description

RingBuilder's are big-ish. We're serializing a non trival data structure while the file handle is open and writing directly into the in-place file - no ideal.

It would be *much* better to write a temporary file - then flush and fsync - then rename.

clayg (clay-gerrard) wrote :
Changed in swift:
importance: Undecided → Wishlist
clayg (clay-gerrard) wrote :

both cases in that diff where it uses self.path that should just be builder_file or something reasonable - you get the idea.

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