We recently moved all our users from the Washington IMAP server to Dovecot. There has been a substantial improvement in performance, but some users are reporting duplicate messages, and we see 'Stale NFS file handle' errors in the syslog. Does anyone know what would cause this ? The errors relate to the index file, eg.
Nov 29 00:49:47 imap-e.ucl.ac.uk dovecot: [ID 107833 mail.error] IMAP(ccaazzz): close() failed with index file /home/ccaazzz/imap-mail/.imap/mbox/dovecot.index: Stale NFS file handle
Our IMAP servers (5 of them) are a mixture of Sparc Solaris 8 and Solaris 10 machines, using NFS to a central mailspool running on AIX. We are using a mixture of Dovecot 1.0.3 and 1.0.5.
dovecot -n gives:
# 1.0.3: /usr/local/etc/dovecot.conf base_dir: /var/run/dovecot/ listen: *:143 ssl_listen: *:993 ssl_ca_file: /usr/local/ssl/certs/sureserveredu.pem ssl_cert_file: /usr/local/ssl/certs/imap-server_ucl_ac_uk.crt ssl_key_file: /usr/local/ssl/certs/imap.key ssl_cipher_list: MEDIUM:!LOW disable_plaintext_auth: no login_dir: /var/run/dovecot//login login_executable: /usr/local/libexec/dovecot/imap-login login_user: pp login_process_per_connection: no login_processes_count: 30 max_mail_processes: 1500 first_valid_uid: 200 mail_location: mbox:%h/imap-mail:INBOX=/nfs/rcs/mail-spool/mail/%u mmap_disable: yes mbox_lock_timeout: 55 mbox_dotlock_change_timeout: 50 mail_drop_priv_before_exec: yes mail_executable: /usr/local/sbin/dovecot-login.csh mail_plugins: mbox_snarf mail_plugin_dir: /usr/local/lib/dovecot namespace: type: private separator: / inbox: yes auth default: passdb: driver: pam passdb: driver: passwd userdb: driver: passwd plugin: mbox_snarf: ~/imap-mail/mbox
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Adrian Barker, Internet Technology Section Information Systems University College London, Gower Street, London WC1E 6BT External phone: +44 20 7679 5140, Fax (+44) 20 7388 5406 Internal phone: x 25140 Email: A.Barker@ucl.ac.uk