From: christophe varoqui <christophe.varoqui@free.fr>
To: device-mapper development <dm-devel@redhat.com>
Subject: Re: multipathd.init
Date: Fri, 01 Apr 2005 23:09:04 +0200 [thread overview]
Message-ID: <1112389744.8118.26.camel@zezette> (raw)
In-Reply-To: <20050401204048.GI14307@agk.surrey.redhat.com>
On ven, 2005-04-01 at 21:40 +0100, Alasdair G Kergon wrote:
> Attached is a cleaned-up version of multipathd init script - at least
> for Red Hat based systems.
>
> While it uses the standard daemon-handling functions, it's still only
> suitable for a few situations though.
>
> If you have / on dm-multipath, the daemon has to be started from
> the initrd - so you don't want it stopping/starting from init.d,
> but you might want to HUP it.
>
Not agreed.
The daemon is only needed for the multipathed FS to survive PG failover
-> PG failback cycles.
Hence, the vulnerability window is between "/ mounted in intrd" and
"multipathd started in rc?.d/".
Do we really want to do complicated things to close that window ? I
would guess not.
I insist : we do survive simple PG failover during that risky window,
with multipathd running. The failing scenario probability is so thin ...
Regards,
--
christophe varoqui <christophe.varoqui@free.fr>
next prev parent reply other threads:[~2005-04-01 21:09 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-01 20:40 multipathd.init Alasdair G Kergon
2005-04-01 21:09 ` christophe varoqui [this message]
2005-04-01 21:19 ` multipathd.init Alasdair G Kergon
2005-04-01 21:25 ` multipathd.init christophe varoqui
2005-04-03 9:43 ` multipathd.init christophe varoqui
2005-04-03 19:59 ` multipathd.init christophe varoqui
2005-04-03 20:02 ` multipathd.init christophe varoqui
2005-04-04 20:52 ` multipathd.init Alasdair G Kergon
2005-04-04 22:08 ` multipathd.init christophe varoqui
2005-04-04 21:15 ` multipathd.init Alasdair G Kergon
2005-04-04 22:14 ` multipathd.init christophe varoqui
2005-04-04 23:06 ` multipathd.init christophe varoqui
2005-04-10 19:22 ` multipathd.init Lars Marowsky-Bree
2005-04-10 19:22 ` multipathd.init Lars Marowsky-Bree
-- strict thread matches above, loose matches on Subject: below --
2005-04-01 21:13 multipathd.init Igor Feoktistov
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