[Dovecot] using dsync to convert mailboxes looses caching options

[Timo Sirainen]

On 10.12.2011, at 13.03, Mark Zealey wrote:

> Ah-ha it's doing the same in 2.0.16 - looking deeper it's because i havn't accessed the tmp fields in a week or two so I guess the decision has been taken not to migrate them.

Yes, most likely the reason. Could this also explain the date.saved?

> It could well be because of the conversion to sdbox then - the ctime/mtime of the files are not being preserved by dsync (in stock 2.0.16). The date.saved timestamp is only put into the cache on the second dsync run; presumably therefore it picks it up from the filesystem.

With sdbox the file's mtime isn't even tried to be preserved. The received-time and saved-time are written to the metadata block inside the file.