On Sun, 17 Nov 2019 at 17:12:54 +0100, Jonas Smedegaard wrote: > local(INBOX.olpc): WARNING: No match for 1 vanished remote UID(s) 97. > Ignoring.
This means the remote server send a VANISHED response for a message in
the “known range” (ie with UID strictly lower than the remote's cache
UIDNEXT value), but that message was not synced locally so interimap
can't replicate the STORE/EXPUNGE command to remove it from the local
server. Details are in RFC 7162 sec. 3.2.5 and 3.2.10 :-)
You can probably see an untagged VANISHED (EARLIER) response with a set
containing 97 if you do
a ENABLE QRESYNC
b EXAMINE INBOX.olpc (QRESYNC (1225292233 1 1:100))
(1225292233 is the mailbox's UIDVALIDITY, 1 is the lowest mod-sequence,
and 1:100 is an UID range containing 97. If that doesn't trigger an
untagged VANISHED (EARLIER) response then replacing ‘1:100’ with
‘1:12584’ should.)
> jonas@auryn:~$ interimap --config debian
> jonas@auryn:~$ interimap --config debian
> jonas@auryn:~$ interimap --config debian
That's expected, it doesn't complain about unexpected VANISHED responses
anymore because it went on. QRESYNC-based synchronization is so
efficient because it's stateful, and UID 97 message disappeared before
the servers could agree on a state. The mailbox's HIGHESTMODSEQ counter
is increased when a message is EXPUNGed, added, flagged, etc.; once
synchronization successfully terminates, the invariant is that all
changes up to the cached UIDNEXT / HIGHESTMODSEQ values have been
synced, so only further changes are picked up next time. (To reconcile
earlier changes one needs to do a so called “full-sync” with --repair.)
The server claims that message has MODSEQ 1, so I guess the VANISHED
(EARLIER) response won't show up when QRESYNC's MODSEQ attribute is ≥2.
That said I'm not sure server responses about that UID can be relied
upon.
> jonas@auryn:~$ interimap --config debian --repair
> local(INBOX.olpc): WARNING: No match for modified remote UID 97. Downloading
> again.
That's also expected, because as we saw earlier the server sends
conflicting untagged FETCH responses for that UID.
--
Guilhem.
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