[Dovecot] deliver and stale NFS file handles

[Leon Meßner]

Hello,
since updating two of our backup mailservers from dovecot 1.1.16 to
1.2.4 i get the following errors from dovecot-deliver when receiving
(smtp) mail.

Oct 16 00:10:42 mail3 dovecot: deliver(user):
write_full(/home/r/user/.temp.backupmail.22774.d17050a07b2108e8)
failed: Stale NFS file handle
Oct 16 00:10:42 mail3 dovecot: deliver(user): copy: i_stream_read()
failed: Stale NFS file handle
Oct 16 00:10:43 mail3 dovecot: deliver(user):
msgid=<d0acb2021be1922ae2d35fbd6b09994c.squirrel at www.physik.tu-berlin.de>:
save failed to INBOX: Internal error occurred. Refer to server log for
more information. [2009-10-16 00:10:42]

It nearly never happens with text/plain mails but _very_
often when mails have attachments of some different type. This is inside
a 7.2-RELEASE-p2 FreeBSD jail. The NFS export is mounted from the
machine that is running the jail. Locking with lockf works.

Following is the output of `dovecot -n` from the mailserver.
Please tell me if you need any further information.

Thanks in Advance,
Leon

$ dovecot -n
# 1.2.4: /usr/local/etc/dovecot.conf
# OS: FreeBSD 7.2-RELEASE-p2 amd64
log_path: /var/log/dovecot.log
protocols: imaps pop3s managesieve
listen: mail3.physik.tu-berlin.de
ssl_cert_file: /etc/private/backupmail.pem
ssl_key_file: /etc/private/backupmail_privatekey.pem
login_dir: /var/run/dovecot/login
login_executable(default): /usr/local/libexec/dovecot/imap-login
login_executable(imap): /usr/local/libexec/dovecot/imap-login
login_executable(pop3): /usr/local/libexec/dovecot/pop3-login
login_executable(managesieve):
/usr/local/libexec/dovecot/managesieve-login
login_processes_count: 6
login_max_processes_count: 256
verbose_proctitle: yes
first_valid_uid: 200
first_valid_gid: 300
mail_privileged_group: mail
mail_location: maildir:~/maildir
mmap_disable: yes
mail_nfs_storage: yes
mail_nfs_index: yes
mail_executable(default): /usr/local/libexec/dovecot/imap
mail_executable(imap): /usr/local/libexec/dovecot/imap
mail_executable(pop3): /usr/local/libexec/dovecot/pop3
mail_executable(managesieve): /usr/local/libexec/dovecot/managesieve
mail_plugin_dir(default): /usr/local/lib/dovecot/imap
mail_plugin_dir(imap): /usr/local/lib/dovecot/imap
mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3
mail_plugin_dir(managesieve): /usr/local/lib/dovecot/managesieve
imap_client_workarounds(default): delay-newmail netscape-eoh
tb-extra-mailbox-sep
imap_client_workarounds(imap): delay-newmail netscape-eoh
tb-extra-mailbox-sep
imap_client_workarounds(pop3):
imap_client_workarounds(managesieve):
pop3_client_workarounds(default):
pop3_client_workarounds(imap):
pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh
pop3_client_workarounds(managesieve):
namespace:
  type: private
  separator: /
  inbox: yes
  list: yes
  subscriptions: yes
namespace:
  type: private
  separator: /
  prefix: mail/
  location: mbox:~/mail
  list: yes
  subscriptions: yes
lda:
  postmaster_address: postmaster at physik.tu-berlin.de
  log_path:
  info_log_path:
  mail_plugins: sieve
  quota_full_tempfail: yes
  sendmail_path: /usr/sbin/sendmail
auth default:
  mechanisms: gssapi plain login
  username_format: %Lu
  krb5_keytab: /etc/mail3.krb5.keytab
  gssapi_hostname: backupmail
  worker_max_count: 120
  passdb:
    driver: pam
    args: session=yes failure_show_msg=yes max_requests=100 dovecot
  userdb:
    driver: passwd
    args: blocking=yes
  socket:
    type: listen
    client:
      path: /var/run/dovecot/auth-client
      mode: 432
    master:
      path: /var/run/dovecot/auth-master
      mode: 384
plugin:
  sieve: ~/.dovecot.sieve
  sieve_dir: ~/.sieve
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