Hi Florian, Am Sonntag, 8. Mai 2011 schrieb Florian Ernst: > Hello Rainer, > > On Sun, May 08, 2011 at 04:14:53PM +0200, Rainer Dorsch wrote: > > [...] > > When I now run the mount command, I get all options listed for /home > > > > /dev/sdc2 on /home type ext4 (rw,noatime,discard,data=ordered) > > > > but not for root > > > > rootfs on / type rootfs (rw) > > > > Were the noatime, discard, and data options lost somewhere on the > > way....? Can I verify that they work? > > Quoting Ted Ts'o from > > <http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=9;bug=616317>: > | Debian simply doesn't support the mount options for the root file > | system in /etc/fstab having any effect on how the root file system is > | mounted. The root file system is mounted by the kernel, and the mount > | options used by the kernel are specified by the rootflags= option on > | the kernel's boot command line. > > See the remainder of the bugreport for a discussion on how to possibly > remedy that in Debian. As for now, you need to go for kernel command > line options passed by your bootloader.
That was an extremely useful reply, I was completely unaware of this, thanks a lot. Nevertheless the rootflags do not end up in mount options for rootfs, maybe I am doing something wrong, which is obvious for somebody reading...: I added rootflags to /etc/default/grub and they are showing up during boot rd@blackbox:~$ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-2.6.32-5-686-bigmem root=UUID=4a4eb948-2d2b-4188-96ae-76a3776ae69c ro quiet elevator=noop rootflags=noatime,discard,data=ordered,errors=remount-ro rd@blackbox:~$ but have no effect on how the root filesystem is mounted (although I did quite some experimentation with variations of the above boot line) rd@blackbox:~$ mount|grep rootfs rootfs on / type rootfs (rw) rd@blackbox:~$ None of the rootflags options survived! I am just wondering what I might have missed. I include /var/log/boot, since it has a suspicious entry findfs: unable to resolve 'UUID="4a4eb948-2d2b-4188-96ae-76a3776ae69c"' not sure if that is related though. Clearly, blkid shows that the UUID exists: blackbox:~# blkid |grep 4a4eb /dev/sdc1: LABEL="root_ssd" UUID="4a4eb948-2d2b-4188-96ae-76a3776ae69c" TYPE="ext4" blackbox:~# Any insight, what I might do wrong is very welcome. Thanks, Rainer For reference the entire /var/log/boot /var/log/boot: Sun May 8 23:06:58 2011: Setting parameters of disc: /dev/sda. Sun May 8 23:06:58 2011: /dev/sdb. Sun May 8 23:06:58 2011: findfs: unable to resolve 'UUID="4a4eb948-2d2b-4188-96ae-76a3776ae69c"' Sun May 8 23:06:58 2011: Activating swap...done. Sun May 8 23:06:58 2011: Usage: mountpoint [-q] [-d] [-x] path Sun May 8 23:06:58 2011: Checking root file system...fsck from util-linux-ng 2.17.2 Sun May 8 23:06:58 2011: root_ssd: clean, 877728/3055616 files, 6710669/12207384 blocks Sun May 8 23:06:58 2011: done. Sun May 8 23:06:58 2011: Usage: mount -V : print version Sun May 8 23:06:58 2011: mount -h : print this help Sun May 8 23:06:58 2011: mount : list mounted filesystems Sun May 8 23:06:58 2011: mount -l : idem, including volume labels Sun May 8 23:06:58 2011: So far the informational part. Next the mounting. Sun May 8 23:06:58 2011: The command is `mount [-t fstype] something somewhere'. Sun May 8 23:06:58 2011: Details found in /etc/fstab may be omitted. Sun May 8 23:06:58 2011: mount -a [-t|-O] ... : mount all stuff from /etc/fstab Sun May 8 23:06:58 2011: mount device : mount device at the known place Sun May 8 23:06:58 2011: mount directory : mount known device here Sun May 8 23:06:58 2011: mount -t type dev dir : ordinary mount command Sun May 8 23:06:58 2011: Note that one does not really mount a device, one mounts Sun May 8 23:06:58 2011: a filesystem (of the given type) found on the device. Sun May 8 23:06:58 2011: One can also mount an already visible directory tree elsewhere: Sun May 8 23:06:58 2011: mount --bind olddir newdir Sun May 8 23:06:58 2011: or move a subtree: Sun May 8 23:06:58 2011: mount --move olddir newdir Sun May 8 23:06:58 2011: One can change the type of mount containing the directory dir: Sun May 8 23:06:58 2011: mount --make-shared dir Sun May 8 23:06:58 2011: mount --make-slave dir Sun May 8 23:06:58 2011: mount --make-private dir Sun May 8 23:06:58 2011: mount --make-unbindable dir Sun May 8 23:06:58 2011: One can change the type of all the mounts in a mount subtree Sun May 8 23:06:58 2011: containing the directory dir: Sun May 8 23:06:58 2011: mount --make-rshared dir Sun May 8 23:06:58 2011: mount --make-rslave dir Sun May 8 23:06:58 2011: mount --make-rprivate dir Sun May 8 23:06:58 2011: mount --make-runbindable dir Sun May 8 23:06:58 2011: A device can be given by name, say /dev/hda1 or /dev/cdrom, Sun May 8 23:06:58 2011: or by label, using -L label or by uuid, using -U uuid . Sun May 8 23:06:58 2011: Other options: [-nfFrsvw] [-o options] [-p passwdfd]. Sun May 8 23:06:58 2011: For many more details, say man 8 mount . Sun May 8 23:06:58 2011: Starting early crypto disks...done. Sun May 8 23:06:58 2011: Starting remaining crypto disks...done. Sun May 8 23:06:58 2011: Cleaning up ifupdown.... Sun May 8 23:06:58 2011: Loading kernel modules...done. Sun May 8 23:06:58 2011: Activating lvm and md swap...done. Sun May 8 23:06:58 2011: Checking file systems...fsck from util-linux-ng 2.17.2 Sun May 8 23:06:58 2011: home_ssd: clean, 295008/4276224 files, 11310957/17097176 blocks (check after next mount) Sun May 8 23:06:58 2011: backup: clean, 278/14663680 files, 23995714/29304560 blocks Sun May 8 23:06:58 2011: home_disk: clean, 553445/12574720 files, 26918497/50293482 blocks Sun May 8 23:06:59 2011: opt_disk: clean, 100621/12222464 files, 6554174/24414775 blocks Sun May 8 23:06:59 2011: home_exchange: clean, 11/4890624 files, 352990/19531015 blocks Sun May 8 23:06:59 2011: done. Sun May 8 23:06:59 2011: Mounting local filesystems...done. Sun May 8 23:06:59 2011: Activating swapfile swap...done. Sun May 8 23:06:59 2011: Cleaning up temporary files.... Sun May 8 23:06:59 2011: Setting kernel variables ...done. Sun May 8 23:06:59 2011: Setting up resolvconf.../etc/resolvconf/update.d/libc: Warning: /etc/resolv.conf is not a symbolic link to /etc/resolvconf/run/resolv.conf Sun May 8 23:06:59 2011: done. Sun May 8 23:06:59 2011: Setting up networking.... Sun May 8 23:06:59 2011: Configuring network interfaces...done. Sun May 8 23:06:59 2011: Starting portmap daemon.... Sun May 8 23:06:59 2011: Starting NFS common utilities: statd. Sun May 8 23:06:59 2011: Cleaning up temporary files.... Sun May 8 23:06:59 2011: Setting up ALSA...done. Sun May 8 23:06:59 2011: Setting console screen modes and fonts. Sun May 8 23:06:59 2011: ^[]R^[[9;30]^[[14;30]Running 0dns-down to make sure resolv.conf is ok...done. Sun May 8 23:07:00 2011: Setting sensors limits. Sun May 8 23:07:00 2011: INIT: Entering runlevel: 2 Sun May 8 23:07:00 2011: Using makefile-style concurrent boot in runlevel 2. Sun May 8 23:07:00 2011: Not starting lastfmproxy, see /etc/default/lastfmproxy Sun May 8 23:07:00 2011: Setting sysfs variables.... Sun May 8 23:07:00 2011: Starting portmap daemon...Already running.. Sun May 8 23:07:00 2011: Starting NFS common utilities: statd. Sun May 8 23:07:00 2011: Starting system log daemon.... Sun May 8 23:07:00 2011: Starting anac(h)ronistic cron: anacron. Sun May 8 23:07:00 2011: Starting DirMngr: dirmngr. Sun May 8 23:07:00 2011: Starting system message bus: dbus. Sun May 8 23:07:00 2011: Starting ACPI services.... Sun May 8 23:07:01 2011: Starting web server: apache2apache2: apr_sockaddr_info_get() failed for blackbox Sun May 8 23:07:01 2011: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName Sun May 8 23:07:01 2011: . Sun May 8 23:07:01 2011: Starting deferred execution scheduler: atd. Sun May 8 23:07:01 2011: Starting Courier authentication services: authdaemond. Sun May 8 23:07:01 2011: Starting Courier IMAP server: imapd. Sun May 8 23:07:01 2011: Starting Avahi mDNS/DNS-SD Daemon: avahi-daemon. Sun May 8 23:07:01 2011: Starting bluetooth: bluetoothd. Sun May 8 23:07:01 2011: Starting Hardware abstraction layer: hald. Sun May 8 23:07:01 2011: saned disabled; edit /etc/default/saned Sun May 8 23:07:01 2011: Starting kernel log daemon.... Sun May 8 23:07:01 2011: Starting internet superserver: inetd. Sun May 8 23:07:01 2011: speech-dispatcher disabled; edit /etc/default/speech-dispatcher Sun May 8 23:07:01 2011: Starting NTP server: ntpd. Sun May 8 23:07:01 2011: Starting K Display Manager: kdm. Sun May 8 23:07:01 2011: Starting periodic command scheduler: cron. Sun May 8 23:07:01 2011: Starting OpenBSD Secure Shell server: sshd. Sun May 8 23:07:01 2011: Starting Common Unix Printing System: cupsd. Sun May 8 23:07:01 2011: Starting Scratchbox: binfmt_misc, mount. Sun May 8 23:07:01 2011: Starting MTA: exim4. -- Rainer Dorsch Lärchenstr. 6 D-72135 Dettenhausen 07157-734133 email: rdor...@web.de jabber: rdor...@jabber.org GPG Fingerprint: 5966 C54C 2B3C 42CC 1F4F 8F59 E3A8 C538 7519 141E Full GPG key: http://pgp.mit.edu/
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