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print queue hung in "SENDING" status

 
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Old 06-07-2011
print queue hung in "SENDING" status
Dear All,

Realized recently some of the print queue configured with rembak, are hung in "SENDING" status. The only workaround for this is to disable and enable back the print queue.

This issue happen very random and frequent.

I turned on the debug mode for a print queue and the following the is captured trace :

Code:
rembak[1048666] main: Mon May 30 12:11:04 2011
rembak[1048666] main: /usr/lib/lpd/rembak -T2880 -D /tmp/thcgl016dbg.log -S CGSK016 -P raw1 -N /usr/lib/lpd/aixshort -o -d -o p -o -X -o 850 /var/spool/qdaemon/tM6UmEa 
rembak[1048666] main: backend=1.
rembak[1048666] hookup: Try to connect, current time=1306728664.
rembak[1048666] sendjob: sendjob starts, jobname=004nzVzN.P00, current time=1306728665.
rembak[1048666] sendjob: datafn[0]=dfA437kulapp72p, fakedfn=dfA437kulapp72p.
rembak[1048666] makecontrolfile: Entering makecontrolfile.
rembak[1048666] makecontrolfile:  dfnames[0]=dfA437kulapp72p
/?燼k[1048666] getbsdinfo: bsd3=Hkulapp72p\10 Pp00adm\10 
rembak[1048666] get_bsd_4file: bsd nc=1
/?餫k[1048666] get_bsd_4file: bsd strings: [N004nzVzN.P00\10 ][N004nzVzN.P00\10 ][N004nzVzN.P00\10 ][N004nzVzN.P00\10 ]
/?燼k[1048666] getbsdinfo: bsd3=Hkulapp72p\10 Pp00adm\10 fdfA437kulapp72p\10 UdfA437kulapp72p\10 N004nzVzN.P00\10 
rembak[1048666] gettmpr: Opening file /tmp//rembak_YafEa.
rembak[1048666] gettmpr: File /tmp//rembak_YafEa opened successfully, fd=7.
rembak[1048666] sendjob: ctrlfname=/tmp//rembak_YafEa, fakecfn=cfA437kulapp72p.
rembak[1048666] sendjob: State machine starts.....
rembak[1048666] sendjob: State 1 - send the "Receive a Print Job" request.
/?`ak[1048666] sendreq: sendreq - sending lpd request [\2 raw1\10 ].
rembak[1048666] gotack: Reading ACK status.....current time=1306728665, timeout_ack=172800.
rembak[1048666] gotack: ACK status=0x0.
rembak[1048666] sendjob: state 3 - Send data file(s), dfcount=1.
rembak[1048666] sendjob:  realfn=/var/spool/qdaemon/tM6UmEa, fakefn=dfA437kulapp72p, filter=/usr/lib/lpd/aixshort.
/?癮k[1048666] sendreq: sendreq - sending lpd request [\3 5029 dfA437kulapp72p\10 ].
rembak[1048666] gotack: Reading ACK status.....current time=1306728665, timeout_ack=172800.
rembak[1048666] gotack: ACK status=0x0.
rembak[1048666] senddatafile: Opening file /var/spool/qdaemon/tM6UmEa.
rembak[1048666] senddatafile: File /var/spool/qdaemon/tM6UmEa opened successfully, fd=8.
rembak[1048666] send_file_rembak: Reading 4096 bytes from file, fd=8.
rembak[1048666] send_file_rembak: Writing 4096 bytes to socket 5.
rembak[1048666] send_file_rembak: Reading 933 bytes from file, fd=8.
rembak[1048666] send_file_rembak: Writing 933 bytes to socket 5.
rembak[1048666] send_file_rembak: File sent.
rembak[1048666] ack: Send ACK.
rembak[1048666] send_file_rembak: waiting for ACK.
rembak[1048666] gotack: Reading ACK status.....current time=1306728665, timeout_ack=172800.
rembak[1048666] gotack: ACK status=0x0.
rembak[1048666] sendjob: State 2 - send control file, ctrlfname=/tmp//rembak_YafEa, fakecfn=cfA437kulapp72p.
/?癮k[1048666] sendreq: sendreq - sending lpd request [\2 149 cfA437kulapp72p\10 ].
rembak[1048666] gotack: Reading ACK status.....current time=1306728665, timeout_ack=172800.
rembak[1048666] gotack: ACK status=0x0.
rembak[1048666] sendcontrolfile: Opening file /tmp//rembak_YafEa.
rembak[1048666] sendcontrolfile: File /tmp//rembak_YafEa opened successfully, fd=8.
rembak[1048666] send_file_rembak: Reading 149 bytes from file, fd=8.
rembak[1048666] send_file_rembak: Writing 149 bytes to socket 5.
rembak[1048666] send_file_rembak: File sent.
rembak[1048666] ack: Send ACK.
rembak[1048666] send_file_rembak: waiting for ACK.
rembak[1048666] gotack: Reading ACK status.....current time=1306728665, timeout_ack=172800.
rembak[1048666] gotack: ACK status=0x0.
rembak[1048666] sendjob: State 5 - end of job #437 (004nzVzN.P00).
rembak[1048666] sendjob: Delete control file /tmp//rembak_YafEa.
 
 
rembak[1048668] main: Mon May 30 12:11:06 2011
rembak[1048668] main: /usr/lib/lpd/rembak -T2880 -D /tmp/thcgl016dbg.log -S CGSK016 -P raw1 -N /usr/lib/lpd/aixshort -o -d -o p -o -X -o 850 /var/spool/qdaemon/tN4ieia 
rembak[1048668] main: backend=1.
rembak[1048668] hookup: Try to connect, current time=1306728666.
rembak[1048668] sendjob: sendjob starts, jobname=004nzeVt.P00, current time=1306728666.
rembak[1048668] sendjob: datafn[0]=dfA438kulapp72p, fakedfn=dfA438kulapp72p.
rembak[1048668] makecontrolfile: Entering makecontrolfile.
rembak[1048668] makecontrolfile:  dfnames[0]=dfA438kulapp72p
/?燼k[1048668] getbsdinfo: bsd3=Hkulapp72p\10 Pp00adm\10 
rembak[1048668] get_bsd_4file: bsd nc=1
/?餫k[1048668] get_bsd_4file: bsd strings: [N004nzeVt.P00\10 ][N004nzeVt.P00\10 ][N004nzeVt.P00\10 ][N004nzeVt.P00\10 ]
/?燼k[1048668] getbsdinfo: bsd3=Hkulapp72p\10 Pp00adm\10 fdfA438kulapp72p\10 UdfA438kulapp72p\10 N004nzeVt.P00\10 
rembak[1048668] gettmpr: Opening file /tmp//rembakb5afMa.
rembak[1048668] gettmpr: File /tmp//rembakb5afMa opened successfully, fd=7.
rembak[1048668] sendjob: ctrlfname=/tmp//rembakb5afMa, fakecfn=cfA438kulapp72p.
rembak[1048668] sendjob: State machine starts.....
rembak[1048668] sendjob: State 1 - send the "Receive a Print Job" request.
/?`ak[1048668] sendreq: sendreq - sending lpd request [\2 raw1\10 ].
rembak[1048668] gotack: Reading ACK status.....current time=1306728666, timeout_ack=172800.
 
 
rembak[1200380] main: Mon May 30 15:15:28 2011
rembak[1200380] main: /usr/lib/lpd/rembak -T2880 -D /tmp/thcgl016dbg.log -S CGSK016 -P raw1 -N /usr/lib/lpd/aixshort -o -d -o p -o -X -o 850 /var/spool/qdaemon/tN4ieia 
rembak[1200380] main: backend=1.
rembak[1200380] hookup: Try to connect, current time=1306739728.
rembak[1200380] sendjob: sendjob starts, jobname=004nzeVt.P00, current time=1306739728.
rembak[1200380] sendjob: datafn[0]=dfA438kulapp72p, fakedfn=dfA438kulapp72p.
rembak[1200380] makecontrolfile: Entering makecontrolfile.
rembak[1200380] makecontrolfile:  dfnames[0]=dfA438kulapp72p
/?燼k[1200380] getbsdinfo: bsd3=Hkulapp72p\10 Pp00adm\10 
rembak[1200380] get_bsd_4file: bsd nc=1
/?餫k[1200380] get_bsd_4file: bsd strings: [N004nzeVt.P00\10 ][N004nzeVt.P00\10 ][N004nzeVt.P00\10 ][N004nzeVt.P00\10 ]
/?燼k[1200380] getbsdinfo: bsd3=Hkulapp72p\10 Pp00adm\10 fdfA438kulapp72p\10 UdfA438kulapp72p\10 N004nzeVt.P00\10 
rembak[1200380] gettmpr: Opening file /tmp//rembakfwupMa.
rembak[1200380] gettmpr: File /tmp//rembakfwupMa opened successfully, fd=7.
rembak[1200380] sendjob: ctrlfname=/tmp//rembakfwupMa, fakecfn=cfA438kulapp72p.
rembak[1200380] sendjob: State machine starts.....
rembak[1200380] sendjob: State 1 - send the "Receive a Print Job" request.
/?`ak[1200380] sendreq: sendreq - sending lpd request [\2 raw1\10 ].
rembak[1200380] gotack: Reading ACK status.....current time=1306739728, timeout_ack=172800.
rembak[1200380] gotack: ACK status=0x0.
rembak[1200380] sendjob: state 3 - Send data file(s), dfcount=1.
rembak[1200380] sendjob:  realfn=/var/spool/qdaemon/tN4ieia, fakefn=dfA438kulapp72p, filter=/usr/lib/lpd/aixshort.
/?癮k[1200380] sendreq: sendreq - sending lpd request [\3 4693 dfA438kulapp72p\10 ].
rembak[1200380] gotack: Reading ACK status.....current time=1306739728, timeout_ack=172800.
rembak[1200380] gotack: ACK status=0x0.
rembak[1200380] senddatafile: Opening file /var/spool/qdaemon/tN4ieia.
rembak[1200380] senddatafile: File /var/spool/qdaemon/tN4ieia opened successfully, fd=8.
rembak[1200380] send_file_rembak: Reading 4096 bytes from file, fd=8.
rembak[1200380] send_file_rembak: Writing 4096 bytes to socket 5.
rembak[1200380] send_file_rembak: Reading 597 bytes from file, fd=8.
rembak[1200380] send_file_rembak: Writing 597 bytes to socket 5.
rembak[1200380] send_file_rembak: File sent.
rembak[1200380] ack: Send ACK.
rembak[1200380] send_file_rembak: waiting for ACK.
rembak[1200380] gotack: Reading ACK status.....current time=1306739728, timeout_ack=172800.
rembak[1200380] gotack: ACK status=0x0.
rembak[1200380] sendjob: State 2 - send control file, ctrlfname=/tmp//rembakfwupMa, fakecfn=cfA438kulapp72p.
/?癮k[1200380] sendreq: sendreq - sending lpd request [\2 149 cfA438kulapp72p\10 ].
rembak[1200380] gotack: Reading ACK status.....current time=1306739728, timeout_ack=172800.
rembak[1200380] gotack: ACK status=0x0.
rembak[1200380] sendcontrolfile: Opening file /tmp//rembakfwupMa.
rembak[1200380] sendcontrolfile: File /tmp//rembakfwupMa opened successfully, fd=8.
rembak[1200380] send_file_rembak: Reading 149 bytes from file, fd=8.
rembak[1200380] send_file_rembak: Writing 149 bytes to socket 5.
rembak[1200380] send_file_rembak: File sent.
rembak[1200380] ack: Send ACK.
rembak[1200380] send_file_rembak: waiting for ACK.
rembak[1200380] gotack: Reading ACK status.....current time=1306739730, timeout_ack=172800.
rembak[1200380] gotack: ACK status=0x0.
rembak[1200380] sendjob: State 5 - end of job #438 (004nzeVt.P00).
rembak[1200380] sendjob: Delete control file /tmp//rembakfwupMa.

As you can see, after the spool : 1048666 completed, the spool somehow stop at : 1048668 the following line :
Code:
rembak[1048668] gotack: Reading ACK status.....current time=1306728666, timeout_ack=172800.

Do you know what is the meaning of this line ? Does it meant the print queue waiting the response of the physical printer after sending the acknowledgement to the physical printer ?

Best Regards,
Ken
 
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