[Dovecot] Error: IMAP(user): nfs_flush_file_handle_cache_dir: rmdir(/var/mail) failed: Device busy

Hi,

I am running dovecot 1.1.10 and 1.1.11 on Solaris 10, mailboxes are in mbox format and served by Solaris 10 NFSv3, the dovecot cache is on local disk.

Some of my users always had above nfs error and their mailbox usually very big, over 100M, 400M, or even 800M.

Grandy