reconstruct error IOERROR: locking cache

[Scott Russell]

Greets -

I have a shared folder, that has subfolders, and I want to move it to be 
a regular account. I've come up with the following process to move the 
shared folder named 'helga' to the new account 'user.helga'. I'm using 
Cyrus 2.3.1-2. The shared folder was originally located on a Cyrus 
2.1.16 server and had not yet been read/modified/opened on the Cyrus 
2.3.1-2 server.

1) Use cyradm to create a new user.helga account
2) Move /var/spool/imap/helga to /var/spool/imap/user/helga and set 
owner/perms as needed
3) As cyrus, run reconstruct -fr user.helga

This seems to work. The obvious side effect is all mail in this folder 
is listed as unseen and all flags are lost. During the reconstruct the 
following errors show up in /var/log/imapd.log for each folder in 
user.helga:

reconstruct[4212]: IOERROR: locking cache for user.helga.Dzimm.Of 
Interest.net-snmp: Bad file descriptor
reconstruct[4212]: IOERROR: locking cache for user.helga.Dzimm.Of 
Interest.telnet: Bad file descriptor
reconstruct[4212]: IOERROR: locking cache for user.helga.Dzimm.Of 
Interest.sudo: Bad file descriptor
reconstruct[4212]: IOERROR: locking cache for user.helga.Dzimm.Of 
Interest.ucd-snmp: Bad file descriptor
reconstruct[4212]: IOERROR: locking cache for user.helga.Dzimm.Of 
Interest.XFree86: Bad file descriptor

I think this can be safely ignored but I want to double check. Can 
someone say why these errors happen and confirm they're safe to ignore? 
I do not think they are related to the migration of a shared folder to 
user account. I think they are related to moving the data between cyrus 
2.1.16 and 2.3.1.

Thanks for the help.

-- 
Scott Russell <lnxgeek at us.ibm.com>
IBM Linux Technology Center