[ntp:questions] sticky(?) orphan mode when GPS avalable

Miernik, Jerzy (Jerzy) jerzy.miernik at alcatel-lucent.com
Fri Nov 19 16:47:58 UTC 2010


I would like to ask for an advice on the following problem:
I have a server that lost GPS signal (cable disconnected), transitioned into orphan child at stratum 5, then got GPS cable reconnected yet remains as orphan child stratum 5 (for 1 hour):

# date
Fri Nov 19 16:44:54 UTC 2010
# ntpq
ntpq> ass
ind assID status  conf reach auth condition  last_event cnt
===========================================================
  1  8016  8053   yes   yes  none    reject  lost reach  5
  2  8017  8073   yes   yes  none    reject  lost reach  7
  3  8018  f634   yes   yes   ok   sys.peer   reachable  3
  4  8019  c000   yes   yes   bad    reject
ntpq> peer
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 SHM(0)          .GPS.            0 l  65m   64    0    0.000  8565.13  18.916
 PPS(0)          .PPS.            0 l  19h   16    0    0.000   23.912   1.387
*ns.alztIT.rdnal 10.77.0.6        5 u  424 1024  377    1.057  270.514   7.643
 ns.alzIT.rdnalu .INIT.          16 u    - 1024    0    0.000    0.000   0.000
ntpq> rv 8016
assID=8016 status=8053 unreach, conf, 5 events, event_unreach,
srcadr=SHM(0), srcport=123, dstadr=127.0.0.1, dstport=123, leap=00,
stratum=0, precision=-1, rootdelay=0.000, rootdispersion=0.000,
refid=GPS, reach=000, unreach=0, hmode=3, pmode=4, hpoll=6, ppoll=10,
flash=1400 peer_dist, peer_unfit, keyid=0, ttl=0, offset=8565.135,
delay=0.000, dispersion=3942.843, jitter=18.916,
reftime=d09118ca.7990c07f  Fri, Nov 19 2010 15:39:54.474,
org=d09118ca.7990c07f  Fri, Nov 19 2010 15:39:54.474,
rec=d09118e6.fb424961  Fri, Nov 19 2010 15:40:22.981,
xmt=d0912807.fb62c9d1  Fri, Nov 19 2010 16:44:55.981,
filtdelay=     0.00    0.00    0.00    0.00    0.00    0.00    0.00    0.00,
filtoffset=    0.00    0.00    0.00    0.00 8565.14 8546.22    0.00    0.00,
filtdisp=   16000.0 16000.0 16000.0 16000.0    6.80    7.77 16000.0 16000.0
ntpq>  

The gpsd and GPS signal, tested on a side, are fine. Yet ntpd remains in orphan mode. Could an expert please comment?
Thanks,
Jerzy Miernik.




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