Quoting Lists Nethead <lists@xxxxxxxxxx>:
Quoting ellie timoney <ellie@xxxxxxxxxxxx>:
Hi,
On Sun, 29 Aug 2021, at 8:28 PM, Lists Nethead wrote:
29392: write(6,"S2 SYNCAPPLY MAILBOX %(UNIQUEID
6uxzsiuvofrhrf69dfs1uqxq MBOXNAME user.ppgw SYNC_CRC 2538953411
SYNC_CRC_ANNOT 307862686 LAST_UI"...,4096) = 4096 (0x1000)
29392: write(6,"ATIONS (%(ENTRY /vendor/cmu/cyrus-imapd/thrid USERID
NIL VALUE 87f494ec1d410ff7))) %(UID 18 MODSEQ 194 LAST_UPDATED
1620897300 F"...,4096) = 4096 (0x1000)
29392: write(6,"12 LAST_UPDATED 1620897300 FLAGS () INTERNALDATE
1608458977 SIZE 58108 GUID 03fd1fb95a2083a702fcf679a0e62182698ea1f8
ANNOTATIONS"...,1984) = 1984 (0x7c0)
It's hard to see what it might be complaining about, since the "S2
SYNCAPPLY ..." command it's trying to send is 4096+4096+1984 bytes
long, and is heavily abbreviated in the strace output.
You can log what's actually going over the wire by enabling
telemetry for the user:
https://www.cyrusimap.org/imap/reference/faqs/o-telemetry.html
In this case, you would want to set up telemetry on your replica
server, for the user named by "sync_authname" on your main server.
This will make the replica log all the replication traffic it
receives.
If you can reproduce the bad protocol error by replicating just one
test folder for one test user, then that's probably the least-noisy
way to proceed, and without worry about exposing anyone's mail
contents.
But if you can't reproduce it with a test folder in a test account,
then it might be something specific to the user or mailbox that's
causing the problem, which will be harder to figure out...
Anyway, the first step is capturing some telemetry.
Thanks Ellie.
Here are the last few lines, I am beginning to suspect annotations
but not sure how to confirm that.
ANNOTATIONS (%(ENTRY /vendor/cmu/cyrus-imapd/thrid USERID NIL VALUE
7ab060a0e7c08e7b))) %(UID 87 MODSEQ 305 LAST_UPDATED 1630308444
FLAGS () INTERNALDATE 1620030552 SIZE 33909 GUID
ce481eab9195672b58f75b35b299cdeb78cdde5d ANNOTATIONS (%(ENTRY
/vendor/cmu/cyrus-imapd/thrid USERID NIL VALUE 5fbbc74a9afc6c39)))
%(UID 88 MODSEQ 307 LAST_UPDATED 1630308444 FLAGS () INTERNALDATE
1629118361 SIZE 33891 GUID bc12963d4fb6657d281a077d8b983450e838ba1e
ANNOTATIONS (%(ENTRY /vendor/cmu/cyrus-imapd/thrid USERID NIL VALUE
2de14f<1630308446<dc44df6e6f)))))
1630308446>S5 NO IMAP_PROTOCOL_ERROR Protocol error
<1630308446<Q01 LOGOUT
I should add that I tried several accounts and results are the same.
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