Arch Linux

remcohn

Member

Registered: 2014-04-02

Posts: 3

mount does nothing, no errors. dmesg looks ok

kernel version: 3.15, 3.16, 3.17.

when i do: `root@server /]# mount /dev/sda1 /boot` i get the following in dmesg:
--
[  887.783451] EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
[  887.785417] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
--

but /boot remains empty and the mount does not show in /proc/mounts or anywhere else.

im kinda lost here, what can i do/try? problem persists after reboot (intact, it started after a reboot)

Remco

note: it happens with ext3/4 and btrfs partitions

Last edited by remcohn (2014-08-30 11:18:03)

remcohn

Member

Registered: 2014-04-02

Posts: 3

Re: mount does nothing, no errors. dmesg looks ok

i can mount things if i boot with init=/bin/sh  doesn't help me much tho

Lone_Wolf

Member

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 11,911

Re: mount does nothing, no errors. dmesg looks ok

Maybe /dev/sda1 is already mounted somewhere ?

please post the output of mount just afer booting.

the output of df -h might also be useful.

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Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

(A works at time B)  && (time C > time B ) ≠  (A works at time C)

andy123

Member

Registered: 2011-11-04

Posts: 169

Website

Re: mount does nothing, no errors. dmesg looks ok

You could also look into the systemd journal with journalctl.

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ooo

Member

Registered: 2013-04-10

Posts: 1,638

Re: mount does nothing, no errors. dmesg looks ok

in addition to what's already been mentioned by others, posting your /etc/fstab could be useful.

Last edited by ooo (2014-08-30 13:30:52)

remcohn

Member

Registered: 2014-04-02

Posts: 3

Re: mount does nothing, no errors. dmesg looks ok

Andy, thanks for the pointer, it is indeed a systemd issue. it quickly unmounts it. if i do `mount /data && df`, the mount does show up. i get this in the journal logs:
--
Aug 30 17:02:47 server kernel: EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
Aug 30 17:02:47 server kernel: EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: data=ordered
Aug 30 17:02:47 server systemd[1]: Unit boot.mount is bound to inactive service. Stopping, too.
Aug 30 17:02:47 server systemd[1]: Unmounting /boot...
Aug 30 17:02:47 server systemd[1]: Unmounted /boot.
--

Remco

emeres

Member

Registered: 2013-10-08

Posts: 1,570

Re: mount does nothing, no errors. dmesg looks ok

 Systemd parses /etc/fstab to generate [mount] services, so follow ooo's suggestion. For more information read 'systemd-fstab-generator'.

Use [⁣code][⁣/code] tags to mark output of a command.

Last edited by emeres (2014-08-30 15:32:03)

zsurnz

Member

From: France

Registered: 2006-03-23

Posts: 18

Re: mount does nothing, no errors. dmesg looks ok

I have the same problem following last upgrade few days ago. Hard disk partitions /dev/sdax are mounted as expected from fstab, but I am unable to mount my USB stick whatever the filesystem on it. Mount does nothing, dmesg looks OK, and fstab contains no line referring to /dev/sdb (device associated with my USB stick).
I have no idea what to do. Did you solve you problem, remcohn ?

alphaniner

Member

From: Ancapistan

Registered: 2010-07-12

Posts: 2,810

Re: mount does nothing, no errors. dmesg looks ok

Does fstab have anything referencing your mount point?

In my fstab I have the line

LABEL=usbstuff	/mnt/usb	auto	defaults,noauto,noatime	0 0

But I regularly mounted other things to /mnt/usb with a full mount command. Since some recent update (I suspect systemd) mount would silently fail* to mount anything else to /mnt/usb but mounting the same things to eg. /mnt/test worked.

* dmesg said something about mounting with opts:(null) which definitely isn't right, but it's not exactly an explicit error either.

Last edited by alphaniner (2014-09-09 20:38:12)

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zsurnz

Member

From: France

Registered: 2006-03-23

Posts: 18

Re: mount does nothing, no errors. dmesg looks ok

alphaniner,
you guessed right, simply renaming /mnt/usb solved the problem.
Thanks.

sshow

Member

Registered: 2017-04-02

Posts: 2

Re: mount does nothing, no errors. dmesg looks ok

I just had the same problem after re-encrypting a luks volume. When trying, messages in journal appeared:

kernel: EXT4-fs (dm-4): mounting ext2 file system using the ext4 subsystem
kernel: EXT4-fs (dm-4): mounted filesystem without journal. Opts: (null)
systemd[1]: boot.mount: Unit is bound to inactive unit dev-disk-by\x2duuid-222dd87e\x2d5abc\x2d1337\x2dab36\x2d82b500731fe1.device. Stopping, too.
systemd[1]: Unmounting /boot...
systemd[1]: Unmounted /boot.

After hints here about issues with systemd, a

systemctl daemon-reload

and

systemctl daemon-reexec

solved it for me.

WorMzy

Forum Moderator

From: Scotland

Registered: 2010-06-16

Posts: 11,845

Website

Re: mount does nothing, no errors. dmesg looks ok

Thanks for sharing. I'm going to go ahead and close this old thread now.

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