Bug#203239: marked as done (debian-policy: Add 'restart-if-running' option to initscripts)
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From: Thomas Hood <jdthood@yahoo.co.uk>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: debian-policy: Add 'restart-if-running' option to initscripts
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Date: Mon, 28 Jul 2003 21:48:10 +0200
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Package: debian-policy
Version: 3.6.0
Severity: wishlist
Wish #87994 originally submitted by Henrique M Holschuh <hmh@debian.org>
seems to have been closed inadvertently. It was merged with #60979
which was closed by release 3.5.9.0:
> * When asked to restart a service that isn't already running,
> the init script should start it, closes: #60979
Wish #87994, however, was for the countenancing of an initscript option
that restarts services only if they _are_ running. That would be useful
to have in postinst scripts on upgrade.
--- Original #87994 ---
This proposal has ties to #76868 (invoke-rc.d), #60979 (what /etc/init.d/xxx
restart does?).
"Action" in the text below is the *first* parameter specified for an init
script (e.g.: in /etc/init.d/foo start, "start" is the action).
The naming for the new 'initscript action' was discussed in #76868, before
it was split from the main proposal of invoke-rc.d.
I propose that a new init script action, 'restart-if-running', defined as:
IFF daemon-is-running-NOW then
stop daemon
start daemon
return OK exit status if daemon started, otherwise return ERROR
else
return OK exit status
to be defined in policy, as *OPTIONAL*.
The main reason for such definition is that we currently lack the
functionality provided by 'restart-if-running', and it cannot be easily (as
in not in an error-prone way) emulated through other methods.
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To: Thomas Hood <jdthood@yahoo.co.uk>
Cc: 203239-done@bugs.debian.org
Subject: Re: Bug#203239: debian-policy: Add 'restart-if-running' option to
initscripts
References: <[🔎] 20030728194810.E2CDD10D8AA@thanatos.localdomain>
From: Manoj Srivastava <srivasta@debian.org>
Organization: The Debian Project
X-URL: http://www.debian.org/%7Esrivasta/
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Date: Mon, 28 Jul 2003 21:01:27 -0500
In-Reply-To: <[🔎] 20030728194810.E2CDD10D8AA@thanatos.localdomain> (Thomas
Hood's message of "Mon, 28 Jul 2003 21:48:10 +0200")
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On Mon, 28 Jul 2003 21:48:10 +0200, Thomas Hood <jdthood@yahoo.co.uk> said:
> Wish #87994 originally submitted by Henrique M Holschuh
> <hmh@debian.org> seems to have been closed inadvertently. It was
> merged with #60979 which was closed by release 3.5.9.0:
>> * When asked to restart a service that isn't already running,
>> the init script should start it, closes: #60979
> Wish #87994, however, was for the countenancing of an initscript
> option that restarts services only if they _are_ running. That
> would be useful to have in postinst scripts on upgrade.
> --- Original #87994 ---
> This proposal has ties to #76868 (invoke-rc.d), #60979 (what
> /etc/init.d/xxx restart does?).
> "Action" in the text below is the *first* parameter specified for an
> init script (e.g.: in /etc/init.d/foo start, "start" is the action).
> The naming for the new 'initscript action' was discussed in #76868,
> before it was split from the main proposal of invoke-rc.d.
> I propose that a new init script action, 'restart-if-running',
> defined as:
> IFF daemon-is-running-NOW then
> stop daemon start daemon return OK exit status if daemon
> started, otherwise return ERROR
> else
> return OK exit status
> to be defined in policy, as *OPTIONAL*.
> The main reason for such definition is that we currently lack the
> functionality provided by 'restart-if-running', and it cannot be
> easily (as in not in an error-prone way) emulated through other
> methods.
This is premature as a policy proposal -- _starting_ with a
policy proposal, and expecting the design and implementation to
follow, is the wrong end of things.
While it is not writ in stone that policy _always_ shall
document current implementation (if the current implementation is
demonstrably wrong then policy ought to not insist on incorrect
behaviour), but the (few) exceptions tend to demonstrate the general
rule.
In this case, the right thing to do is to get people to
incorporate this restart-if-running action, and _then_ come to ask it
to be written into policy.
Adding an init script action in advance of current practice,
and then using policy to beat people on the head with it, is not a
good idea.
In general, one should design, and implement new "stuff"
before asking that it be enshrined in policy. (this is not, after
all, debian-devel, where development related discussion happen).
manoj
--
Don't be humble ... you're not that great. Golda Meir
Manoj Srivastava <srivasta@debian.org> <http://www.debian.org/%7Esrivasta/>
1024R/C7261095 print CB D9 F4 12 68 07 E4 05 CC 2D 27 12 1D F5 E8 6E
1024D/BF24424C print 4966 F272 D093 B493 410B 924B 21BA DABB BF24 424C
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