PB with mailboxes.db magic number

[Simon Matter]

> Hi,
>
> Thanks for your response.
>
> Verification of magic.mgc :
> rpm -qf /usr/share/cyrus-imapd/rpm/magic.mgc
> cyrus-imapd-2.1.11-6
>
> It's the good version.

The problem is that it should not exist, at least not with current
cyrus-imapd rpms. I also don't remember what was the problem but I had to
fix things once because there was an errata 'file' package from RedHat
which broke things. So, if you want it to work, you have to update your
box with the RedHat errata updates and update the cyrus rpm and I'm very
sure it will be fine.

Simon

>
> Zixiong
>
>
> ----- Original Message -----
> From: "Simon Matter" <simon.matter at ch.sauter-bc.com>
> To: "Zixiong WANG" <z.wang at sysium.com>
> Cc: <info-cyrus at lists.andrew.cmu.edu>; <d.li at sysium.com>
> Sent: Friday, January 16, 2004 8:05 PM
> Subject: Re: PB with mailboxes.db magic number
>
>
>> Hi,
>>
>> We have problems with mailboxes.db :
>>
>> In a initial configuration, all works fine.
>>
>> After a database corruption, we have rebuilt mailboxes.db with the
>> method
>> described in the "cyrus-imapd-README.HOWTO-recover-mailboxes.db" file
>> (which
>> is inclued in the cyrus-imapd RPM).
>> Now "/etc/init.d/cyrus-imapd restart" is blocked after "converting db
>> files... ". We have found that the problem is located in
>> "/usr/libexec/cyrus/cvt_cyrusdb_all", when it does a :
>>
>> file -b -m /usr/share/magic:/usr/share/cyrus-imapd/rpm/magic
>> /var/lib/imap/mailboxes.db
>> with the following error :
>> file: invalid type 0 in mconvert().
>>
>> In fact, "file" uses /usr/share/cyrus-imapd/rpm/magic.mgc file. If we
>
> I'm wondering whether your file /usr/share/cyrus-imapd/rpm/magic.mgc
> belongs to the rpm package. Can you check this with rpm -qf
> /usr/share/cyrus-imapd/rpm/magic.mgc?
>
>> remove
>> the magic.mgc file, and rerun the command, we get :
>>
>> file -b -m /usr/share/magic:/usr/share/cyrus-imapd/rpm/magic
>> /var/lib/imap/mailboxes.db
>> file: Using regular magic file `/usr/share/cyrus-imapd/rpm/magic'
>> Cyrus skiplist DB
>>
>> In fact, if we recompile the magic file to create a new magic.mgc, it's
>> different with the old one :
>> cp /usr/share/cyrus-imapd/rpm/magic.mgc /tmp
>> cd /tmp
>> file -C -m magic
>> cmp magic.mgc /usr/share/cyrus-imapd/rpm/magic.mgc
>> magic.mgc /usr/share/cyrus-imapd/rpm/magic.mgc differ: byte 109, line 1
>>
>> Now, with the new magic.mgc, no more problem :
>> file -b -m magic /var/lib/imap/mailboxes.db
>> Cyrus skiplist DB
>>
>> So the questions :
>> 1) Why the default magic.mgc is different from the new one ?
>> 2) If the default magic.mgc is bad, why there wasn't any problem before
>> the
>> database corruption ?
>> 3) Is it a mailboxes.db rebuild problem ? (But the newly rebuilt
>> database
>> works very fine)
>>
>> The default magic.mgc is not altered since installation, as magic and
>> magic.mgc have the same date:
>> # ls -l /usr/share/cyrus-imapd/rpm
>> -rw-r--r--    1 root     root          338 jan 29  2003 magic
>> -rw-r--r--    1 root     root          216 jan 29  2003 magic.mgc
>>
>> Thanks in advance.
>>
>> PS: our configuration is
>> cyrus-sasl-md5-2.1.10-1
>> cyrus-sasl-2.1.10-1
>> cyrus-sasl-devel-2.1.10-1
>> cyrus-imapd-2.1.11-6
>> cyrus-imapd-utils-2.1.11-6
>
> Okay, you didn't tell us which RedHat version you are using but your cyrus
> packages are quite old. There was a problem with an updated file version
> which may in this case affect you. I strongly recommend you to upgrade to
> the current releases of the rpms. Most likely the problem doesn't exist
> there.
>
> Simon
>
>>
>> # uname -a
>> Linux myhost 2.4.18-14 #1 Wed Sep 4 13:35:50 EDT 2002 i686 i686 i386
>> GNU/Linux
>>
>> --
>> M. Zixiong WANG,
>> z.wang at sysium.com
>>
>>
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