calibre -s fails ....sometimes :-(

[drawson1]

To be more correct, it works in one script and fails in another :-(

The two scripts share IDENTICAL code for the shutdown / restart:

if (ps -ef | grep "/opt/calibre/bin/calibre" | grep -v grep > /dev/null)
then
    RUNNING=TRUE
    WITH_LIB="--with-library=http://localhost:8080/"
fi

......

[[ -n ${RUNNING} ]] && /usr/bin/calibre -s

.....

[[ -n ${RUNNING} ]] && /usr/bin/calibre &

One of these scripts works exactly as expected; the other one fails with:

[Errno 111] Connection refused

'shutdown:'

FYI, Both scripts are shutting down calibre so that I can run "calibredb catalog" with some very specific options, and then import the results.

How can I debug the "Connection refused" error?

Environment:
Calibre 6.28.1
OpenSUSE 15.4 with all current patches
XFCE desktop


Thanks!

Dan

[kovidgoyal]

you will typically get connection refused when calibre is already shutting down.

[drawson1]

Hmmm .... doesn't seem to be the case. For BOTH scripts, just before I call "calibre -s", the process list looks the same:

18-Oct-23 06:40 > ps -ef | grep calibre
drawson  31991     1  1 06:38 pts/4    00:00:06 /opt/calibre/bin/calibre
drawson  32036 31991  0 06:38 pts/4    00:00:00 /opt/calibre/bin/calibre-parallel --pipe-worker from calibre.utils.ipc.pool import run_main, worker_main; run_main(41, worker_main)
drawson  32622 31237  0 06:46 pts/4    00:00:00 grep --color=auto calibre

but one of the scripts kills it and the other doesn't. I also tried:

pkill calibre

(fails)

and

pkill calibre-parallel

(works)

One other note - even when it fails, the return value from "calibre -s" is still 0 :-(

[kovidgoyal]

then your permission denied will be one script running as a different user than the other