Logrotate-Fehlermeldung von nmbd jeden Sonntag

[Stefan Baur <newsgroups.mail2@stefanbaur.de>]

Hallo,

ich bekomme gerade jeden Sonntag eine Mail von cron:

/etc/cron.daily/logrotate:
gzip: stdin: file size changed while zipping

Ich habe daher den Cronjob für logrotate geändert und um ein "-v" ergänzt.

Nun bekomme ich jeden Tag eine Mail mit allem, was Logrotate angestellt
hat, nicht nur den Fehlern.

Sonntags taucht dann dieser Eintrag mit auf:

rotating pattern: /var/log/samba/log.nmbd  weekly (7 rotations)
empty log files are not rotated, old logs are removed
considering log /var/log/samba/log.nmbd
  log needs rotating
rotating log /var/log/samba/log.nmbd, log->rotateCount is 7
dateext suffix '-20140622'
glob pattern '-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]'
renaming /var/log/samba/log.nmbd.7.gz to /var/log/samba/log.nmbd.8.gz (rotatecount 7, logstart 1, i 7), 
renaming /var/log/samba/log.nmbd.6.gz to /var/log/samba/log.nmbd.7.gz (rotatecount 7, logstart 1, i 6), 
renaming /var/log/samba/log.nmbd.5.gz to /var/log/samba/log.nmbd.6.gz (rotatecount 7, logstart 1, i 5), 
renaming /var/log/samba/log.nmbd.4.gz to /var/log/samba/log.nmbd.5.gz (rotatecount 7, logstart 1, i 4), 
renaming /var/log/samba/log.nmbd.3.gz to /var/log/samba/log.nmbd.4.gz (rotatecount 7, logstart 1, i 3), 
renaming /var/log/samba/log.nmbd.2.gz to /var/log/samba/log.nmbd.3.gz (rotatecount 7, logstart 1, i 2), 
renaming /var/log/samba/log.nmbd.1.gz to /var/log/samba/log.nmbd.2.gz (rotatecount 7, logstart 1, i 1), 
renaming /var/log/samba/log.nmbd.0.gz to /var/log/samba/log.nmbd.1.gz (rotatecount 7, logstart 1, i 0), 
old log /var/log/samba/log.nmbd.0.gz does not exist
renaming /var/log/samba/log.nmbd to /var/log/samba/log.nmbd.1
creating new /var/log/samba/log.nmbd mode = 0644 uid = 0 gid = 0
running postrotate script
compressing log with: /bin/gzip
gzip: stdin: file size changed while zipping
removing old log /var/log/samba/log.nmbd.8.gz

An den restlichen Wochentagen erscheint dagegen das fehlerlose

rotating pattern: /var/log/samba/log.nmbd  weekly (7 rotations)
empty log files are not rotated, old logs are removed
considering log /var/log/samba/log.nmbd
  log does not need rotating
not running postrotate script, since no logs were rotated

Was ist da Sonntags los, dass der logrotate nicht klappt? Wie kann man
das debuggen?

Grüße
Stefan