[cups] 000* temp files in /var/spool/cups

[Michael Sweet]

Since these are owned by root, my guess would be temporary files from a backend that didn't clean up after itself, perhaps the LPD backend?

You might be able to figure out the "owner" by looking at the CUPS error_log file for the date/time those files were created. 


> On Jan 23, 2017, at 5:55 PM, Tim Mooney <Tim.Mooney at ndsu.edu> wrote:
> 
> 
> We have a fairly busy CUPS print server on RHEL 6.x x86_64, which means
> CUPS 1.4.2 + "vendor sauce", as Michael puts it.  :-)
> 
> I've noticed that something is leaving behind what appears to be temporary
> files in /var/spool/cups:
> 
> [dozens of earlier files skipped]
> -rw-r----- 1 root lp     430269 Jan 18 10:45 0007d2e6
> -rw-r----- 1 root lp       4128 Jan 18 17:53 0007df38
> -rw-r----- 1 root lp    4491554 Jan 19 13:52 0007ec5e
> -rw-r----- 1 root lp 1246802255 Jan 19 16:49 0007efc9
> -rw-r----- 1 root lp    3927097 Jan 20 11:51 0007f9ec
> -rw-r----- 1 root lp      94673 Jan 20 12:24 0007fae7
> -rw-r----- 1 root lp    1971144 Jan 20 23:44 0007ff68
> -rw-r----- 1 root lp   28538871 Jan 21 14:28 0008007c
> -rw-r----- 1 root lp   13023929 Jan 23 07:27 00080505
> -rw-r----- 1 root lp    4590399 Jan 23 11:01 00080caf
> -rw-r----- 1 root lp    1945658 Jan 23 11:41 00080dbb
> -rw-r----- 1 root lp    1572647 Jan 23 12:44 0008108f
> 
> The files are all job data files:
> 
> #file 0007* 0008*
> 0007d2e6: HP Printer Job Language data
> 0007df38: HP Printer Job Language data
> 0007ec5e: HP Printer Job Language data
> 0007efc9: PostScript document text conforming DSC level 3.0, Level 2
> 0007f9ec: HP Printer Job Language data
> 0007fae7: HP Printer Job Language data
> 0007ff68: HP Printer Job Language data
> 0008007c: HP Printer Job Language data
> 00080505: HP Printer Job Language data
> 00080caf: HP Printer Job Language data
> 00080dbb: HP Printer Job Language data
> 0008108f: HP Printer Job Language data
> 
> I'm reviewing the CUPS CHANGES documents after 1.4.2, to see if this
> is mentioned anywhere as a bug that has been fixed in a more recent
> version, and initially thought it might be STR#3795 from CHANGES-1.4.txt:
> 
>    - The scheduler might leave old job data files in the spool directory
>      (STR #3795)
> 
> but it turns out that was for actual d* files, not files with a temporary
> name.
> 
> I can't find anything that looks like this issue anywhere in CHANGES.
> 
> Anyone else seen this particular issue?
> 
> None of the 000* files are open.  Am I likely to cause problems for cupsd
> if I remove them while it's running?
> 
> Tim
> -- 
> Tim Mooney                                             Tim.Mooney at ndsu.edu
> Enterprise Computing & Infrastructure                  701-231-1076 (Voice)
> Room 242-J6, Quentin Burdick Building                  701-231-8541 (Fax)
> North Dakota State University, Fargo, ND 58105-5164
> _______________________________________________
> cups mailing list
> cups at cups.org
> https://lists.cups.org/mailman/listinfo/cups

_________________________________________________________
Michael Sweet, Senior Printing System Engineer