About a week ago, I did a migratation of our the Legato server here from a
system running Tru64 Unix 4.0f with NetWorker Power Edition 6.1.1 to Power
Edition 6.1.3 under Solaris 9 on a Sun Enterprise 450, For a variety of
reasons, this migration has been very painful. Now, for the past three days,
I have had a problem with where nsrjb processes seem to hang. No tapes are
mounted, none are unmounted, yet there are numerous tapes that are eligible
for use, at least 15 of which are brand new. The problem seems to start at
about 8:00pm. Until then, backups run fine and tapes mount and unmount
fine. Then the system slows to a crawl where Legato is concerned, such as
taking several minutes to open up nsrwatch.
This is with a 600 slot Qualstar 412600 tape library that has 6 AIT-2 tape
drives in the left side and six new ones that I am about to configure (but
haven't yet) in the right side. I opened a call with Legato about this
problem on Thursday morning, but Legato has not provided a solution yet,
ahtough they have requested lots of daemon.log and debugging data. So far,
they say they see nothing wrong with the debug data, but the debug session
was run during the day when this situation does not happen.
I am wondering if anyone on this list has any suggestions on how I might deal
with this problem.
When this happens, system utilization seems normal, as in this "top"
display:
last pid: 11172; load averages: 1.54, 1.53, 1.62
458 processes: 442 sleeping, 2 running, 13 zombie, 1 on cpu
CPU states: 0.0% idle, 76.9% user, 23.1% kernel, 0.0% iowait, 0.0% swap
Memory: 1024M real, 372M free, 505M swap in use, 2220M swap free
PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND
13845 root 1 20 0 77M 76M run 21.2H 61.11% nsrd
13851 root 1 3 10 46M 45M run 529:19 27.03% nsrmmdbd
11166 root 1 39 0 3024K 1904K cpu 0:00 1.40% top
13859 root 2 59 -15 14M 9800K sleep 53:25 1.33% nsrmmd
13839 root 1 59 0 5408K 4000K sleep 1:38 0.06% nsrexecd
13838 root 1 59 0 4248K 2624K sleep 1:55 0.06% nsrexecd
3821 root 1 59 0 3296K 2120K sleep 0:00 0.05% nsrexec
7449 root 1 59 0 3296K 2120K sleep 0:00 0.04% nsrexec
292 root 1 59 0 3536K 2008K sleep 0:24 0.03% sshd2
428 root 1 59 -15 4992K 3752K sleep 0:00 0.02% nsrmmd
22973 root 1 59 0 3296K 2120K sleep 0:01 0.02% nsrexec
24242 root 1 59 0 3296K 2120K sleep 0:01 0.02% nsrexec
23028 root 1 59 0 3296K 2120K sleep 0:01 0.02% nsrexec
21304 root 1 59 0 3296K 2120K sleep 0:01 0.02% nsrexec
21468 root 1 59 0 3296K 2120K sleep 0:01 0.02% nsrexec
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