From: "Alexander E. Patrakov" <patrakov@ums.usu.ru>
To: linux-hotplug@vger.kernel.org
Subject: Re: Wrong symlink handling on rule changes
Date: Thu, 20 Sep 2007 15:27:34 +0000 [thread overview]
Message-ID: <46F29166.8060700@ums.usu.ru> (raw)
In-Reply-To: <200709201716.37510.zzam@gentoo.org>
Matthias Schwarzott wrote:
> Hi there!
> Playing around with rules I stepped over a strange thing.
>
> I played with device-mapper rules, but the bug is about general symlink
> handling.
>
> 1. My rules did set this:
> NAME="dm-0", SYMLINK="mapper/main-slash"
> That results in /dev/dm-0 being a device-node and /dev/mapper/main-slash is a
> symlink to it.
>
> 2. Swapping NAME and SYMLINK
> NAME="mapper/main-slash", SYMLINK="dm-0"
> and running udevtrigger changes dm-0 to be a symlink to correct target.
> BUT: It changes mapper/main-slash to be a symlink to itself.
>
> Calling udevtrigger a second time will correct symlink.
>
Is this reproducible with non-device-mapper devices? I think (but I am
not sure) that the device-mapper library can poke into /dev by itself,
and thus calling dmsetup from the persistent storage rules may interfere
with normal udev operation here.
--
Alexander E. Patrakov
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next prev parent reply other threads:[~2007-09-20 15:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-20 15:16 Wrong symlink handling on rule changes Matthias Schwarzott
2007-09-20 15:27 ` Alexander E. Patrakov [this message]
2007-09-20 15:35 ` Matthias Schwarzott
2007-09-20 15:40 ` Kay Sievers
2007-09-20 16:10 ` Matthias Schwarzott
2007-09-20 17:10 ` Kay Sievers
2007-09-20 17:43 ` Kay Sievers
2007-09-20 21:07 ` Matthias Schwarzott
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