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Re: pkg/48258: mysql-server startup files may try to set to high fd-limit in pkgsrc-startup-file
The following reply was made to PR pkg/48258; it has been noted by GNATS.
From: Wolfgang Stukenbrock <wolfgang.stukenbrock%nagler-company.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: pkg-manager%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost,
pkgsrc-bugs%NetBSD.org@localhost
Subject: Re: pkg/48258: mysql-server startup files may try to set to high
fd-limit in pkgsrc-startup-file
Date: Wed, 02 Oct 2013 16:56:10 +0200
Hi again,
I've just found "my" problem why the mysqld does not start during boot.
The problem is "located" in mysqld_safe.
Prior the logging is realy setup, a message is send by log_notice (or
similar) to the stdout. (Same happens if I try not to all the
shell-funtion and just echo the line.)
It looks like the login process on the console has already started and
all previous fd's to /dev/console has been revoked. Why this simply
kills the shell I still don't know. And why writing to stdout later is
ignored without crashing the shell is also a little bit strange.
If I "disable" this output (e.g. by setting the true command in front of
the line) further output is redirected to the log-file of syslog (not
tested, but should work too) and the DB-server comes up.
This is very very bad !!!!!
We seems to have a timing problem during startup here.
The only known workaround to me is to add a sleep in the rc-file after
backgrounding mysqld_save. Not very smart and not realy relyable.
For my system a "sleep 1" is good for all my startup tries (till now).
So a "sleep 5" should do it for this system with excactly this set of
programs started during boot.
But this is no sollution - just try, error and hope it wil not break ...
I try to get the syscall that kills the shell by starting ktrace short
time in front of the location of the problem - but cannot say how much
time I need to get a sollution.
The current startup script simply does not work on NetBSD 6.1. With the
sleep mentioned above the problem can be worked around for unknown reasons.
best regards
W. Stukenbrock
Wolfgang Stukenbrock wrote:
> The following reply was made to PR pkg/48258; it has been noted by GNATS.
>
> From: Wolfgang Stukenbrock
> <wolfgang.stukenbrock%nagler-company.com@localhost>
> To: gnats-bugs%NetBSD.org@localhost
> Cc: pkg-manager%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost,
> pkgsrc-bugs%NetBSD.org@localhost
> Subject: Re: pkg/48258: mysql-server startup files may try to set to high
> fd-limit in pkgsrc-startup-file
> Date: Wed, 02 Oct 2013 14:32:37 +0200
>
> Hi - OK, I haven't tested that again on NetBSD.
>
> On Solaris ulimit with a to large value will give an error. (tested
> again in /bin/sh and with setrlimit() for some minutes.)
>
> On NetBSD there seems to be (now) the feature that ulimit in /bin/sh and
> setrlimit() will clamp the parameter passed to the maximum - the hard-limit.
>
> So for NetBSD this is working, but for any other system that does not
> silently clamp the value it doesn't.
> I'm not shure about the set of OS's that is affected. At least Solaris 8 is.
>
> pkgsrc is for more than "only" NetBSD, so I think it would be better not
> to "hope" that the system will truncate to the max.
> Sorry for not explicitly testing on NetBSD prior sending the report.
>
> By The way, I have had this problem with the FD-limit with mysqld in the
> past, so that I have added some commandline options in my automated
> DB-setup scripts that are executed during system installation, but I'm
> not shure about the NetBSD version where I've added this (3.x or 4.x).
> It is still in there, even it is (perhaps) now no longer needed.
> And I remember that my main DB-server has crashed when I try to set a
> larger value as the kernel supports in the DB-server-config file - e.g.
> when I boot a GENERIC for some reasons - I've increased the hard-limit
> in the "normal" kernel for this system. That system currently runs
> NetBSD 4.x.
>
> just for information (till now):
> I'm debugging an other problem with the delivered rc-files for
> mysql-server 5.5, because the DB-server crashes during startup when
> started during system startup on NetBSD 6.1. Calling "/etc/rc.d/mysqld
> start" by hand later will bring the deamon up.
> (It seems to be either mysql 5.5 related or is a problem with NetBSD
> 6.1, because mysql 5.1 on NetBSD 5.1.2 does not show this problem on
> several installations.)
> Still not found what it is. Without additional debugging inserted the
> DB-server runs into SEGV after setting up the socket and prior the
> message that it is now listening in the error log. But when started
> under ktrace it still does not start, but it now looks like "something"
> is shutting down the server during startup (no SEGV anymore), but the
> normal shutdown messages are in the error-log file of the DB-server.
> Very strange till now ...
>
> best regards
>
> W. Stukenbrock
>
> OBATA Akio wrote:
>
> > The following reply was made to PR pkg/48258; it has been noted by GNATS.
> >
> > From: "OBATA Akio" <obache%netbsd.org@localhost>
> > To: gnats-bugs%netbsd.org@localhost
> > Cc:
> > Subject: Re: pkg/48258: mysql-server startup files may try to set to high
> > fd-limit in pkgsrc-startup-file
> > Date: Wed, 02 Oct 2013 20:19:35 +0900
> >
> > On Wed, 02 Oct 2013 20:00:00 +0900,
> <Wolfgang.Stukenbrock%nagler-company.com@localhost> wrote:
> >
> > >> How-To-Repeat:
> > > setup a fresh system (e.g. amd64), log in and run "ulimit -Hn".
> It will report 3404.
> > > And so setting 4096 in the rc-file will (silently) fail and the
> server will stay at 128 fd's.
> >
> > I cannot reproduce it on NetBSD-5.1.2-i386, soft limit will be up to the
> hard limit:
> >
> > # ulimit -Hn
> > 3404
> > # ulimit -Sn
> > 128
> > # ulimit -n 4096
> > # ulimit -Hn
> > 3404
> > # ulimit -Sn
> > 3404
> >
> > --
> > OBATA Akio / obache%NetBSD.org@localhost
> >
> >
> >
> > Received: from DB3PR07MB171.eurprd07.prod.outlook.com (10.242.132.149) by
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> by
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> for
> > <Wolfgang.Stukenbrock%nagler-company.com@localhost>; Wed, 2 Oct 2013
> 13:25:06 +0200
> > (CEST)
> > Received: by mollari.NetBSD.org (Postfix, from userid 31008) id
> 612697100A;
> > Wed, 2 Oct 2013 11:25:01 +0000 (UTC)
> > From: OBATA Akio <obache%NetBSD.org@localhost>
> > To: <pkg-manager%NetBSD.org@localhost>,
> <gnats-admin%NetBSD.org@localhost>,
> > <pkgsrc-bugs%NetBSD.org@localhost>,
> <Wolfgang.Stukenbrock%nagler-company.com@localhost>
> > Reply-To: <gnats-bugs%NetBSD.org@localhost>
> > Subject: Re: pkg/48258: mysql-server startup files may try to set to high
> > fd-limit in pkgsrc-startup-file
> > References: <pr-pkg-48258%gnats.netbsd.org@localhost>
> > <20131002105744.E5864123B93%test-s0.nagler-company.com@localhost>
> > X-Gnats-Was-Stupid: no
> > CC:
> > Message-ID: <20131002112501.612697100A%mollari.NetBSD.org@localhost>
> > Date: Wed, 2 Oct 2013 11:25:01 +0000
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> >
> > The following reply was made to PR pkg/48258; it has been noted by GNATS.
> >
> > From: "OBATA Akio" <obache%netbsd.org@localhost>
> > To: gnats-bugs%netbsd.org@localhost
> > Cc:
> > Subject: Re: pkg/48258: mysql-server startup files may try to set to high
> > fd-limit in pkgsrc-startup-file
> > Date: Wed, 02 Oct 2013 20:19:35 +0900
> >
> > On Wed, 02 Oct 2013 20:00:00 +0900,
> <Wolfgang.Stukenbrock%nagler-company.com@localhost> wrote:
> >
> > >> How-To-Repeat:
> > > setup a fresh system (e.g. amd64), log in and run "ulimit -Hn".
> It will report 3404.
> > > And so setting 4096 in the rc-file will (silently) fail and the
> server will stay at 128 fd's.
> >
> > I cannot reproduce it on NetBSD-5.1.2-i386, soft limit will be up to the
> hard limit:
> >
> > # ulimit -Hn
> > 3404
> > # ulimit -Sn
> > 128
> > # ulimit -n 4096
> > # ulimit -Hn
> > 3404
> > # ulimit -Sn
> > 3404
> >
> > --
> > OBATA Akio / obache%NetBSD.org@localhost
> >
> >
>
>
> --
>
>
> Dr. Nagler & Company GmbH
> Hauptstraße 9
> 92253 Schnaittenbach
>
> Tel. +49 9622/71 97-42
> Fax +49 9622/71 97-50
>
> Wolfgang.Stukenbrock%nagler-company.com@localhost
> http://www.nagler-company.com
>
>
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>
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> (CEST)
> Received: by mollari.NetBSD.org (Postfix, from userid 31008) id A2F2F7100A;
> Wed, 2 Oct 2013 12:35:00 +0000 (UTC)
> From: Wolfgang Stukenbrock
> <wolfgang.stukenbrock%nagler-company.com@localhost>
> To: <pkg-manager%NetBSD.org@localhost>, <gnats-admin%NetBSD.org@localhost>,
> <pkgsrc-bugs%NetBSD.org@localhost>,
> <Wolfgang.Stukenbrock%nagler-company.com@localhost>
> Reply-To: <gnats-bugs%NetBSD.org@localhost>
> Subject: Re: pkg/48258: mysql-server startup files may try to set to high
> fd-limit in pkgsrc-startup-file
> References: <pr-pkg-48258%gnats.netbsd.org@localhost>
> <20131002105744.E5864123B93%test-s0.nagler-company.com@localhost>
> X-Gnats-Was-Stupid: no
> CC:
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> The following reply was made to PR pkg/48258; it has been noted by GNATS.
>
> From: Wolfgang Stukenbrock
> <wolfgang.stukenbrock%nagler-company.com@localhost>
> To: gnats-bugs%NetBSD.org@localhost
> Cc: pkg-manager%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost,
> pkgsrc-bugs%NetBSD.org@localhost
> Subject: Re: pkg/48258: mysql-server startup files may try to set to high
> fd-limit in pkgsrc-startup-file
> Date: Wed, 02 Oct 2013 14:32:37 +0200
>
> Hi - OK, I haven't tested that again on NetBSD.
>
> On Solaris ulimit with a to large value will give an error. (tested
> again in /bin/sh and with setrlimit() for some minutes.)
>
> On NetBSD there seems to be (now) the feature that ulimit in /bin/sh and
> setrlimit() will clamp the parameter passed to the maximum - the hard-limit.
>
> So for NetBSD this is working, but for any other system that does not
> silently clamp the value it doesn't.
> I'm not shure about the set of OS's that is affected. At least Solaris 8 is.
>
> pkgsrc is for more than "only" NetBSD, so I think it would be better not
> to "hope" that the system will truncate to the max.
> Sorry for not explicitly testing on NetBSD prior sending the report.
>
> By The way, I have had this problem with the FD-limit with mysqld in the
> past, so that I have added some commandline options in my automated
> DB-setup scripts that are executed during system installation, but I'm
> not shure about the NetBSD version where I've added this (3.x or 4.x).
> It is still in there, even it is (perhaps) now no longer needed.
> And I remember that my main DB-server has crashed when I try to set a
> larger value as the kernel supports in the DB-server-config file - e.g.
> when I boot a GENERIC for some reasons - I've increased the hard-limit
> in the "normal" kernel for this system. That system currently runs
> NetBSD 4.x.
>
> just for information (till now):
> I'm debugging an other problem with the delivered rc-files for
> mysql-server 5.5, because the DB-server crashes during startup when
> started during system startup on NetBSD 6.1. Calling "/etc/rc.d/mysqld
> start" by hand later will bring the deamon up.
> (It seems to be either mysql 5.5 related or is a problem with NetBSD
> 6.1, because mysql 5.1 on NetBSD 5.1.2 does not show this problem on
> several installations.)
> Still not found what it is. Without additional debugging inserted the
> DB-server runs into SEGV after setting up the socket and prior the
> message that it is now listening in the error log. But when started
> under ktrace it still does not start, but it now looks like "something"
> is shutting down the server during startup (no SEGV anymore), but the
> normal shutdown messages are in the error-log file of the DB-server.
> Very strange till now ...
>
> best regards
>
> W. Stukenbrock
>
> OBATA Akio wrote:
>
> > The following reply was made to PR pkg/48258; it has been noted by GNATS.
> >
> > From: "OBATA Akio" <obache%netbsd.org@localhost>
> > To: gnats-bugs%netbsd.org@localhost
> > Cc:
> > Subject: Re: pkg/48258: mysql-server startup files may try to set to high
> > fd-limit in pkgsrc-startup-file
> > Date: Wed, 02 Oct 2013 20:19:35 +0900
> >
> > On Wed, 02 Oct 2013 20:00:00 +0900,
> <Wolfgang.Stukenbrock%nagler-company.com@localhost> wrote:
> >
> > >> How-To-Repeat:
> > > setup a fresh system (e.g. amd64), log in and run "ulimit -Hn".
> It will report 3404.
> > > And so setting 4096 in the rc-file will (silently) fail and the
> server will stay at 128 fd's.
> >
> > I cannot reproduce it on NetBSD-5.1.2-i386, soft limit will be up to the
> hard limit:
> >
> > # ulimit -Hn
> > 3404
> > # ulimit -Sn
> > 128
> > # ulimit -n 4096
> > # ulimit -Hn
> > 3404
> > # ulimit -Sn
> > 3404
> >
> > --
> > OBATA Akio / obache%NetBSD.org@localhost
> >
> >
> >
> > Received: from DB3PR07MB171.eurprd07.prod.outlook.com (10.242.132.149) by
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> > +0000
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> by
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> for
> > <Wolfgang.Stukenbrock%nagler-company.com@localhost>; Wed, 2 Oct 2013
> 13:25:06 +0200
> > (CEST)
> > Received: by mollari.NetBSD.org (Postfix, from userid 31008) id
> 612697100A;
> > Wed, 2 Oct 2013 11:25:01 +0000 (UTC)
> > From: OBATA Akio <obache%NetBSD.org@localhost>
> > To: <pkg-manager%NetBSD.org@localhost>,
> <gnats-admin%NetBSD.org@localhost>,
> > <pkgsrc-bugs%NetBSD.org@localhost>,
> <Wolfgang.Stukenbrock%nagler-company.com@localhost>
> > Reply-To: <gnats-bugs%NetBSD.org@localhost>
> > Subject: Re: pkg/48258: mysql-server startup files may try to set to high
> > fd-limit in pkgsrc-startup-file
> > References: <pr-pkg-48258%gnats.netbsd.org@localhost>
> > <20131002105744.E5864123B93%test-s0.nagler-company.com@localhost>
> > X-Gnats-Was-Stupid: no
> > CC:
> > Message-ID: <20131002112501.612697100A%mollari.NetBSD.org@localhost>
> > Date: Wed, 2 Oct 2013 11:25:01 +0000
> > Return-Path: gnats%NetBSD.org@localhost
> > X-MS-Exchange-Organization-MessageDirectionality: Incoming
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> > The following reply was made to PR pkg/48258; it has been noted by GNATS.
> >
> > From: "OBATA Akio" <obache%netbsd.org@localhost>
> > To: gnats-bugs%netbsd.org@localhost
> > Cc:
> > Subject: Re: pkg/48258: mysql-server startup files may try to set to high
> > fd-limit in pkgsrc-startup-file
> > Date: Wed, 02 Oct 2013 20:19:35 +0900
> >
> > On Wed, 02 Oct 2013 20:00:00 +0900,
> <Wolfgang.Stukenbrock%nagler-company.com@localhost> wrote:
> >
> > >> How-To-Repeat:
> > > setup a fresh system (e.g. amd64), log in and run "ulimit -Hn".
> It will report 3404.
> > > And so setting 4096 in the rc-file will (silently) fail and the
> server will stay at 128 fd's.
> >
> > I cannot reproduce it on NetBSD-5.1.2-i386, soft limit will be up to the
> hard limit:
> >
> > # ulimit -Hn
> > 3404
> > # ulimit -Sn
> > 128
> > # ulimit -n 4096
> > # ulimit -Hn
> > 3404
> > # ulimit -Sn
> > 3404
> >
> > --
> > OBATA Akio / obache%NetBSD.org@localhost
> >
> >
>
>
> --
>
>
> Dr. Nagler & Company GmbH
> Hauptstraße 9
> 92253 Schnaittenbach
>
> Tel. +49 9622/71 97-42
> Fax +49 9622/71 97-50
>
> Wolfgang.Stukenbrock%nagler-company.com@localhost
> http://www.nagler-company.com
>
>
> Hauptsitz: Schnaittenbach
> Handelregister: Amberg HRB
> Gerichtsstand: Amberg
> Steuernummer: 201/118/51825
> USt.-ID-Nummer: DE 273143997
> Geschäftsführer: Dr. Martin Nagler
>
>
>
--
Dr. Nagler & Company GmbH
Hauptstraße 9
92253 Schnaittenbach
Tel. +49 9622/71 97-42
Fax +49 9622/71 97-50
Wolfgang.Stukenbrock%nagler-company.com@localhost
http://www.nagler-company.com
Hauptsitz: Schnaittenbach
Handelregister: Amberg HRB
Gerichtsstand: Amberg
Steuernummer: 201/118/51825
USt.-ID-Nummer: DE 273143997
Geschäftsführer: Dr. Martin Nagler
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