Re: [HACKERS] Shutting down a warm standby database in 8.2beta3

"Tom Lane" <tgl@sss.pgh.pa.us> writes:

> Gregory Stark <stark@enterprisedb.com> writes:
>> Sure, but it might be getting delivered to, say, your "sleep" command. You
>> haven't checked the return value of sleep to handle any errors that may occur.
>> As it stands you have to check for errors from every single command executed
>> by your script.
>
> The expectation is that something like SIGINT or SIGQUIT would be
> delivered to both the sleep command and the shell process running the
> script.  So the shell should fail anyway.  (Of course, a nontrivial
> archive or recovery script had better be checking for failures at each
> step, but this is not very relevant to the immediate problem.)

Hm, I tried to test that before I sent that. But I guess my test was faulty
since I was really testing what process the terminal handling delivered the
signal to:


$ cat /tmp/test.sh
#!/bin/sh

echo before
sleep 5 || echo sleep failed
echo after

$ sh /tmp/test.sh ; echo $?
before
^\
/tmp/test.sh: line 4: 23407 Quit                    sleep 5
sleep failed
after
0


--
  Gregory Stark
  EnterpriseDB          http://www.enterprisedb.com