Seen database issue

[Shelley Waltz]

Simon Matter said:
>>
>>> Moving the /var/spool/imap directories, and /var/lib/user/{}.seen
>>> files to the new server and reconstructing works fine except that all
>>> the
>>> mail shows up as "not read" on the new sever.
>>
>> The seen state is keyed on the mailbox "uniqueid", so if that changes,
>> the
>> seen state becomes invalid.
>>
>> The mailbox uniqueid is based on the mailbox name + the uidvalidity
>> value,
>> which is itself based on the time the mailbox is created, or recreated
>> due
>> to a reconstruct.
>>
>> Now I thought reconstruct should preserve the mailbox uniqueid in most
>> cases, but it's possible it's not if you're not copying all the data
>> correctly.
>>
>> 1. Why are you reconstructing the mailboxes. If you copy all the right
>> data,
>> it should be fine without a reconstruct
>> 2. How are you copying the data? Recommend using rsync -az which will
>> preserve all the attributes + timestamps
>
> I recommend adding -H here when using single instance store.
>
>> 3. Are you using split data/meta data? If so, are you copying the
>> metadata
>> as well?
>> 4. What flags are you passing to reconstruct?
>
> I can only second what Rob says. I have migrated several servers ranging
> from RedHat 7.2 to RHEL5 and doing constant Cyrus-IMAPd updates on them
> since the 2.1 days and never lost seen. Looks like copying only part of
> metadata is going to get you in trouble.
>
> A word about database rebuilds the Cyrus-IMAPd starts. There are two
> things:
> 1) Skiplist DB's are recovered whenever a DB is opened the first time
> after Cyrus-IMAPd was started.
> 2) My RPM's (Invoca) care to convert all DB's to the correct version on
> startup and also convert all BDB's to Skiplist on shutdown to prevent
> problems when migrating to a server with other BDB version. You seem to
> use the cyrus-imapd RPMs shipped with RHEL5 which are based on a old
> version of  the Invoca RPMs.
>
> Simon

Simon, is there a newer RHEL5 rpm available which I can use to upgrade
from the standard RHEL5 distribution?  Or must I remove and build/install
from source?
thanks S