Hello Brian,
On Sun, Mar 03, 2019 at 01:54:56PM +0000, Brian Potkin wrote:
> On Sun 03 Mar 2019 at 06:20:10 +0100, Helge Kreutzmann wrote:
>
> > On Sat, Mar 02, 2019 at 01:14:29PM +0000, Brian Potkin wrote:
> > >
> > > c (control or history) files and d (document) files. They should get
> > > cleared with 'cancel -a -x' but might need to be removed with 'rm'.
> >
> > Thanks for the pointer. I usually use "lprm" and always thought that
> > removing a job also removes all spool files. I did not know about the
> > command cancel, whose name does not lead to beeing printing specific
> > (neither starts with cups nor with lp).
> >
> > Do you think implying "-x" with with lprm would be a worthwile
> > wishlist bug for upstream?
>
> I am unfamiliar with the lprm command so hope I am not misuderstanding
> its manual or you. However, my reading of
>
> https://github.com/apple/cups/issues/1149
>
> leads me to think that such a report would be closed.
Thanks for the pointer.
> > > cupsd.conf(5) explains the PreserveJobFiles and PreserveJobHistory
> > > directives. If you put "PreserveJobFiles 30" in cupsd.conf, does it
> > > work for you?
> >
> > Neither are currently explicitly set. But the man page says that
> > PreserveJobFiles has a default value of 1 day and PreserveJobHistory
> > is yes. Maybe PreserveJobFiles only applies to sucessfully printed
> > jobs?
>
> It does indeed.
Then this does not help in my case, I guess, but I see.
>
> > > You may, of course, alter the default PreserveJobHistory value too
> > > but are then likely to hit Bug#921741. Knowing how much of Emin Kaya's
> > > issue you can replicate would be useful.
> >
> > Just to be clear: I should first try out PreserveJobHistory? And after
> > a day all spool files should be gone (if it works)?
>
> Not quite.
>
> First clear out /var/spool/cups.
The cancel command does not work for this (as ordinary user):
LC_ALL=C cancel -ax
cancel: purge-jobs failed: Forbidden
I used "rm d00*" as root.
> I'd suggest you put "PreserveJobFiles 30" (and other smallish values)
> in cupsd.conf, then print and see whether you can have confidence in
> the option being functional. My tests indicate it is reliable. In which
> case you should not experience the spool directory getting clogged up
> in future.
I will test this, but then at least the documention is wrong, because
cupsd.conf(5) says:
PreserveJobFiles seconds
… The default is "86400" (preserve 1 day).
So I set the value to 30, printed one file which does not print and
nothing vanish, even after several minutes.
I then cancel the job with "cancel" (not my usual lprm). This works.
But again, the file d* is not deleted after the 30 seconds are over.
So to conclude cups is missing a mechanism to remove uprintable files
in the spool directory.
So the best way is probably a good old "rm d00*" in a suitable cron
job, e.g. cron.weekly.
Thanks for your help.
If any of this knowledge is worth putting into a bug report somewhere
I can do that of course.
Greetings
Helge
--
Dr. Helge Kreutzmann debian@helgefjell.de
Dipl.-Phys. http://www.helgefjell.de/debian.php
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