[Dovecot] nfs_flush errors

[Hans Wunsch]

Timo Sirainen wrote:
> On Tue, 2008-07-08 at 11:17 -0700, Hans Wunsch wrote:
>   
>> I'm looking for some help with an nfs error that is filling our logs.  I 
>> get a constant stream of these messages:
>>
>>   Jul  8 10:47:08 servername dovecot: [ID 107833 mail.error] 
>> IMAP(username): nfs_flush_file_handle_cache_dir: rmdir(/var/mail) 
>> failed: Device busy
>>
>>  I have two dovecot IMAP servers.  All mailboxes are NFS mounted.  The 
>> INBOX is /var/mail and the rest are in /home/<user>/mail. 
>>     
>
> I guess the problem is dotlocking. They probably go away with the
> attached patch? But that also could make the locking slower if the cache
> doesn't get flushed and the cached stat values keep getting returned.
>
>   
Sorry for taking so long to get back on this one.  But it seems the 
errors persist with the patch:

  Jul 21 11:10:44 barrelv1 dovecot: [ID 107833 mail.error] IMAP(hans): 
nfs_flush_file_handle_cache_dir: rmdir(/var/mail) failed: Device busy
  Jul 21 11:10:44 barrelv1 dovecot: [ID 107833 mail.error] IMAP(hans): 
nfs_flush_file_handle_cache_dir: rmdir(/var/mail) failed: Device busy

Other ideas?

Thanks,
Hans.