Date: Thu, 06 Aug 2009 11:03:07 -0400 From: Michael Scheidell <scheidell@secnap.net> To: freebsd-jail@FreeBSD.org Subject: Re: crontab hanging won't die on SIGTERM in jail Message-ID: <4A7AF0AB.40605@secnap.net> In-Reply-To: <4A7AE762.2070408@secnap.net> References: <4A7AE4D4.2090600@secnap.net> <4A7AE762.2070408@secnap.net>
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meant sig_stop=.
stranger yet, this works:
echo 'sig_stop=SIGTERM' > /etc/rc.conf.d/cron
truss shows the sigterm now just fine.
Michael Scheidell wrote:
> this doesn't stop cron:
>
> /etc/rc.d/cron stop
> (just keeps spitting out the pid)
>
> killall -SIGTERM cron (doesn't work)
>
> killall -SIGQUIT|SIGKILL seems to work.
>
>
> Workaround is this:
>
> echo "sigstop=SIGQUIT" > /etc/rc.conf.d/cron
>
> works fine now.
>
>
> isn't needed in base, just in jail.
>
>
>
> Michael Scheidell wrote:
>> anyone having problems during an in jail shutdown with crontab hanging?
>> I have seen this in 6.4 and 7.1, on i386 and amd64.
>> I don't remember problems with 6.3
>>
>>
>> using jailtools (jkill -r), OR
>> shutdown -r +0
>>
>> OR
>>
>> reboot
>> reboot: SIGTSTP init: No such process
>>
>> truss shows:
>> truss -p 87553
>> (null)() = 0 (0x0)
>> gettimeofday({1249567500.835698},0x0) = 0 (0x0)
>> stat("tabs",{mode=drwx------ ,inode=10458278,size=512,blksize=4096})
>> = 0 (0x0)
>> stat("/etc/crontab",{mode=-rw-r--r--
>> ,inode=10461256,size=748,blksize=4096}) = 0 (0x0)
>> gettimeofday({1249567500.836244},0x0) = 0 (0x0)
>> fork() = 88217 (0x15899)
>> gettimeofday({1249567500.836862},0x0) = 0 (0x0)
>> nanosleep({60.000000000}) ERR#4 'Interrupted
>> system call'
>> SIGNAL 20 (SIGCHLD)
>> SIGNAL 20 (SIGCHLD)
>> wait4(0xffffffff,0xbfbfe99c,0x1,0x0) = 88217 (0x15899)
>> wait4(0xffffffff,0xbfbfe99c,0x1,0x0) ERR#10 'No child
>> processes'
>> sigreturn(0xbfbfe9d0) ERR#4 'Interrupted
>> system call'
>> gettimeofday({1249567500.842115},0x0) = 0 (0x0)
>>
>>
>> killall -SIGTERM cron
>>
>> (caused NO truss activity)
>>
>> it sees a HUP:
>>
>> killall -SIGHUP cron
>>
>> truss:
>> SIGNAL 1 (SIGHUP)
>> (null)() ERR#4 'Interrupted
>> system call'
>> gettimeofday({17.000000},0x0) = 0 (0x0)
>> (null)() = 0 (0x0)
>>
>>
>> SIGKILL will kill it.
>>
>>
>
--
Michael Scheidell, CTO
Phone: 561-999-5000, x 1259
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