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From: "Dmitry V. Levin" <ldv@altlinux.org>
To: ALT Devel discussion list <devel@lists.altlinux.org>
Subject: Re: [devel] [git update] packages/startup: tags/0.9.8.17-alt2
Date: Tue, 4 Mar 2008 17:38:22 +0300
Message-ID: <20080304143822.GA5814@wo.int.altlinux.org> (raw)
In-Reply-To: <20080304124052.GM30111@newmaster.mivlgu.local>

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On Tue, Mar 04, 2008 at 03:40:52PM +0300, Sergey Vlasov wrote:
> On Tue, Mar 04, 2008 at 03:24:37PM +0300, Dmitry V. Levin wrote:
> > On Tue, Mar 04, 2008 at 04:29:20AM +0300, Alexey Borovskoy wrote:
> > > Update of /people/alb/packages/startup.git
> > [...]
> > > commit 806db97e10b92c271dd9b6120697b7a9c9c4ec0b
> > > Author: Alexey Borovskoy <alb@altlinux>
> > > Date:   Tue Jan 8 13:55:20 2008 +1200
> > > 
> > >     Fix LVM startup when / on MD device.
> > > 
> > > Full diff since `0.9.8.17-alt1' follows:
> > > diff --git a/startup/rc.d/rc.sysinit b/startup/rc.d/rc.sysinit
> > > index c11f197..24fd217 100755
> > > --- a/startup/rc.d/rc.sysinit
> > > +++ b/startup/rc.d/rc.sysinit
> > > @@ -263,12 +263,12 @@ fi
> > >  
> > >  # Load device-mapper, create its device file
> > >  if [ -e /proc/devices -a -e /proc/misc ]; then
> > > -	rm -f /dev/mapper/control
> > >  	modprobe dm-mod >/dev/null 2>&1
> > >  	if [ -z "$RUN_UDEV" ]; then
> > >  		MAJOR="$(sed -ne 's/^ *\([0-9]\+\) \+misc$/\1/p' /proc/devices)"
> > >  		MINOR="$(sed -ne 's/^ *\([0-9]\+\) \+device-mapper$/\1/p' /proc/misc)"
> > >  		if [ -n "$MAJOR" -a -n "$MINOR" ]; then
> > > +	                rm -f /dev/mapper/control
> > >  			mkdir -p -m755 /dev/mapper
> > >  			action "Creating device-mapper character device ($MAJOR, $MINOR):" \
> > >  				mknod --mode=600 /dev/mapper/control c "$MAJOR" "$MINOR"
> > 
> > Можно пояснить, что именно исправляет это изменение?
> 
> Если модуль dm-mod в этот момент уже был загружен (например, из
> initrd), и при этом udevd был запущен из rc.sysinit (RUN_UDEV=1), в
> результате выполнения этого кода файл устройства /dev/mapper/control
> удалялся, что приводило к ошибкам при последующем запуске lvm.
> Конечно, имеющаяся запись changelog никуда не годится - MD не имеет
> никакого отношения к данной проблеме.
> 
> В новом варианте, правда, всё равно остаётся race - в случае
> RUN_UDEV=1 файл устройства должен создавать udevd, но ожидание его
> создания не производится.

А каким образом лучше ждать появления этого файла?


-- 
ldv

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  reply	other threads:[~2008-03-04 14:38 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-04 12:24 ` Dmitry V. Levin
2008-03-04 12:40   ` Sergey Vlasov
2008-03-04 14:38     ` Dmitry V. Levin [this message]
2008-03-04 15:49       ` Anton Farygin
2008-03-04 16:06         ` Led
2008-03-04 16:17           ` Sergey V Turchin
2008-03-04 16:34             ` Led
2008-03-04 17:28           ` Anton Farygin
2008-03-04 18:19           ` Mikhail Gusarov
2008-03-04 19:40             ` Led
2008-03-04 19:43               ` Mikhail Gusarov
2008-03-04 20:06                 ` Led
2008-03-04 20:20                   ` Mikhail Gusarov
2008-03-04 20:50                     ` Led
2008-03-04 20:53                       ` Mikhail Gusarov
2008-03-04 22:43         ` Dmitry V. Levin
2008-03-05  5:43           ` Anton Farygin
2008-03-05 12:28             ` Dmitry V. Levin
2008-03-05 12:46               ` Anton Farygin
2008-03-05 13:14                 ` Sergey Vlasov
2008-03-05 18:00                   ` Vitaly Ostanin
2008-03-05 19:01                   ` Dmitry V. Levin
2008-03-05 21:47                     ` Anton Farygin

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