Comment 2 for bug 1070539

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Erica Windisch (ewindisch) wrote : Re: create_lvm_image allocates dirty blocks

Yes, this affects Folsom. I believe this was a new feature for Folsom, so it would not affect Essex or Diablo. The code was added on 2012-05-16 (May).

There are similar concerns in nova-volumes / cinder, but this is slightly better handled there. They wipe the device on deletion, but there are edge-cases where that is insufficient. (That warrants another bug report, actually)