cyrus-common-2.2 depends on GNU df

I can verify this problem.

I'm getting the exact same error message:

Trying to optimize Cyrus partitions, edit /etc/default/cyrus2.2 to disable...
df: unknown option: P
Usage: df [-F FSType] [-abeghklntVvZ] [-o FSType-specific_options] [directory | block_device | resource]
Starting Cyrus IMAPd: usage: ps [ -aAdefHlcjLPyZ ] [ -o format ] [ -t termlist ]
        [ -u userlist ] [ -U userlist ] [ -G grouplist ]
        [ -p proclist ] [ -g pgrplist ] [ -s sidlist ] [ -z zonelist ] [-h lgrplist]
  'format' is one or more of:
        user ruser group rgroup uid ruid gid rgid pid ppid pgid sid taskid ctid
        pri opri pcpu pmem vsz rss osz nice class time etime stime zone zoneid
        f s c lwp nlwp psr tty addr wchan fname comm args projid project pset lgrp
cyrmaster.

It doesn't seem to only be the df command because you can see in the line that starts with "Starting Cyrus IMAPd:" it's complaining about the use of the 'ps' command. This error repeats every time I try to start the cyrus imap daemon and results in me being unable to start it.

After fixing the above problem with the use of ps I stopped getting the usage message for ps. However, cyrus does not seem to get properly started for some reason. I did a little research and finally found out that cyrus crashes during startup with the message: "init_kmem: kvm_open failed: Bad file number". I'm creating a new bug for this issue.