From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755379AbYKDJNx (ORCPT ); Tue, 4 Nov 2008 04:13:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753907AbYKDJNQ (ORCPT ); Tue, 4 Nov 2008 04:13:16 -0500 Received: from mx71.mail.ru ([194.67.23.4]:57995 "EHLO mx71.mail.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753587AbYKDJNN (ORCPT ); Tue, 4 Nov 2008 04:13:13 -0500 From: Andrey Borzenkov To: Linux Kernel Mailing List Subject: 2.6.28-rc3: kernel mounts the same device twice? Or /proc/mounts lies? Date: Tue, 4 Nov 2008 12:13:07 +0300 User-Agent: KMail/1.9.10 MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart23578011.orLi6yiMUp"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200811041213.07717.arvidjaar@mail.ru> X-Spam: Not detected X-Mras: OK Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --nextPart23578011.orLi6yiMUp Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Out of some infinite wisdom something on my system decided to add fstab entry for "new" device after switching from IDE to PATA: # Entry for /dev/LABEL=/ : LABEL=/ / reiserfs relatime,tail 1 1 none /proc proc defaults 0 0 none /sys sysfs defaults 0 0 none /tmp tmpfs defaults 0 0 # Entry for /dev/LABEL=swap : LABEL=swap swap swap defaults 0 0 # Entry for /dev/sda2 : UUID=72973377-c299-4ca6-ae94-2022b7dca58f /media/hd reiserfs defaults 0 0 Note that both / and /media/hd refer to the same device: {pts/0}% sudo blkid /dev/sda1: TYPE="swap" LABEL="swap" UUID="3b4dc82c-a6e6-4609-be9e-16d9206ab7fd" /dev/sda2: UUID="72973377-c299-4ca6-ae94-2022b7dca58f" LABEL="/" TYPE="reiserfs" And according to /proc/mounts both are mounted at the same time: {pts/0}% cat /proc/mounts rootfs / rootfs rw 0 0 /dev/root / reiserfs rw 0 0 /dev /dev tmpfs rw 0 0 /proc /proc proc rw 0 0 /sys /sys sysfs rw 0 0 /proc/bus/usb /proc/bus/usb usbfs rw,devgid=43,devmode=664 0 0 none /dev/pts devpts rw,mode=620 0 0 none /dev/shm tmpfs rw 0 0 none /tmp tmpfs rw 0 0 none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0 /dev/sda2 /media/hd reiserfs rw 0 0 {pts/0}% ll /dev/root brw------- 1 root root 8, 2 2008-11-04 12:01 /dev/root {pts/0}% ll /dev/sda2 brw-rw---- 1 root disk 8, 2 2008-11-04 12:01 /dev/sda2 Bug or feature? --nextPart23578011.orLi6yiMUp Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEABECAAYFAkkQEiMACgkQR6LMutpd94whQQCgkWE/FniUjTzJeAbjKetRw1mh xJYAoJmIQuOElrDAzs5DaAX6l/SvsJvE =QYoB -----END PGP SIGNATURE----- --nextPart23578011.orLi6yiMUp--