Hi list, I'm running cyrus replication on cyrus 2.5.10. It seems
whenever a folder is encountered in log-run that doesn't exist on the
client and/or the server, the replication process logs "Error in
do_sync(): bailing out! Bad protocol". Sometimes, it dies completely,
other times it restarts at the beginning of the log-run file. But when
it re-encounters the folder in question, the same failure occurs and the
problem continuously loops until some manual action is taken. I have a
checker script that attempts to restart a stopped sync but I haven't
tried to code it to get past these types of folder errors. In the
meantime, replication effectively stops and the replication log
continuously builds in size. You might imagine my horror at discovering
yesterday that replication of my production server with 1200 accounts
had been failing for over 7 weeks unnoticed, generating 9.5 million
lines in the replication log files. I had gotten out of the habit of
daily monitoring of replication as it had been running fine and I
eventually moved on to other things. I'm trying to get replication to
run through the enormous backlog but am running into more similar folder
issues that cause the process to fail, I make manual fixes, and start
the process again. In my experience with this, reconstruction of the
affected folders on the master host and copy host has no effect.
Can this otherwise excellent feature be made more robust to work past
these folder issues?
Here are a couple of examples I've observed thus far of how the process
is failing for me.
--------------
In this example, the subfolder "Fly America Foreign Travel" no longer
existed on the master host but did exist on the copy host. To resolve
this, I had to manually delete that folder from the copy host.
May 9 15:17:48 imap1 sync_client[34614]: inefficient replication (8 >
5) user.jtaft.PO.Fly America Foreign Travel
May 9 15:17:48 imap1 sync_client[34614]: FULLMAILBOX received NO
response: IMAP_MAILBOX_NONEXISTENT No Such Mailbox
May 9 15:17:48 imap1 sync_client[34614]: do_folders(): update failed:
user.jtaft.PO.Fly America Foreign Travel 'Mailbox does not exist'
May 9 15:17:48 imap1 sync_client[34614]: IOERROR: Mailbox does not exist
May 9 15:17:48 imap1 sync_client[34614]: Error in do_sync(): bailing
out! Mailbox does not exist
May 9 15:17:48 imap1 sync_client[34614]: Processing sync log file
/var/spool/CyrusDB-Sieve/cyrusdb/sync/log-run failed: Mailbox does not exist
May 9 15:17:48 imap1 sync_client[34614]: Reprocessing sync log file
/var/spool/CyrusDB-Sieve/cyrusdb/sync/log-run
--------------
In this example, the subfolder "Sohn" did not exist on the master host
nor on the copy host. To resolve, I had to edit log-run and completely
remove all entries for this "Sohn" subfolder.
May 10 10:13:26 imap1 sync_client[47011]: IOERROR: zero length response
to MAILBOXES (end of file reached)
May 10 10:13:26 imap1 sync_client[47011]: IOERROR: zero length response
to MAILBOXES (end of file reached)
May 10 10:13:26 imap1 sync_client[47011]: IOERROR: zero length response
to UNMAILBOX (end of file reached)
May 10 10:13:26 imap1 sync_client[47011]: folder_delete(): failed:
user.gg-chair.Trash.Sohn 'Bad protocol'
May 10 10:13:26 imap1 sync_client[47011]: Error in do_sync(): bailing
out! Bad protocol
May 10 10:13:26 imap1 sync_client[47011]: Processing sync log file
/var/spool/CyrusDB-Sieve/cyrusdb/sync/log-run failed: Bad protocol
--------------
Often, errors are logged without "bailing out!" and replication
continues to run:
May 10 10:45:00 imap1 sync_client[87438]: sync_mailboxes: doing 1000
May 10 10:45:01 imap1 sync_client[87438]: sync_mailboxes: doing 1000
May 10 10:45:24 imap1 sync_client[87438]: IOERROR: GUID mismatch
/var/spool/cyrus/mail/c/user/cdm-lit/Sent/148.
May 10 10:45:37 imap1 sync_client[87438]: IOERROR: zero length response
to MAILBOX (end of file reached)
May 10 10:45:37 imap1 sync_client[87438]: do_folders(): update failed:
user.cdm-lit.Sent 'Bad protocol'
May 10 10:45:37 imap1 sync_client[87438]: sync_mailboxes: doing 1000
--------------
Thank you, list!
-Eric
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