[linux-lvm] Unmounting file system hangs up...

[linux-lvm] Unmounting file system hangs up...

[Thinking Outside the Well]

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Hello,

I am using Fedora 10 and LVM. Lately when I shut down or restart the Linux
box, it hangs at the stage of "Unmounting file system".


   - Turning off swap  --- OK
   - Turning off quotas --- OK
   - Unmounting pipe file system  --- OK
   - Unmounting file system ---  hangs up

Although I can turn off or restart the box manually, I am a bit concerned
whether it is the beginning of more serious problems later.
Your suggestion will be greatly appreciated.

rod

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Re: [linux-lvm] Unmounting file system hangs up...

[André Gillibert]

Thinking Outside the Well <rod.rook@gmail.com> wrote:
> Hello,
> 
> I am using Fedora 10 and LVM. Lately when I shut down or restart the Linux
> box, it hangs at the stage of "Unmounting file system".
> 
> 
>    - Turning off swap  --- OK
>    - Turning off quotas --- OK
>    - Unmounting pipe file system  --- OK
>    - Unmounting file system ---  hangs up
> 
> Although I can turn off or restart the box manually, I am a bit concerned
> whether it is the beginning of more serious problems later.
> Your suggestion will be greatly appreciated.

You should find exactly which command hangs.
It might be as simple as a fs that it cannot umount because it's busy.
Or maybe something like Fedora trying to umount a network file system after the network has been shut down.

In doubt, check the health of your disk with fsck, badblocks and smartmontools.

-- 
André Gillibert

Re: [linux-lvm] Unmounting file system hangs up...

[Thinking Outside the Well]

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Thank you for your quick response, Andre.
I agree you are right on your suggestion that Fedora is trying to umount a
network file system. I think it actually is trying to umount a CentOS file
system installed in another hard drive. The reason why I think that way is
that whenever I log on to CentOS, it complains that something is wrong with
the file system and checks it

Do you know how to tell Fedora not to umount CentOS file system?

rod

On Sun, Oct 4, 2009 at 9:38 AM, André Gillibert <rcvxdg@gmail.com> wrote:

> Thinking Outside the Well <rod.rook@gmail.com> wrote:
> > Hello,
> >
> > I am using Fedora 10 and LVM. Lately when I shut down or restart the
> Linux
> > box, it hangs at the stage of "Unmounting file system".
> >
> >
> >    - Turning off swap  --- OK
> >    - Turning off quotas --- OK
> >    - Unmounting pipe file system  --- OK
> >    - Unmounting file system ---  hangs up
> >
> > Although I can turn off or restart the box manually, I am a bit concerned
> > whether it is the beginning of more serious problems later.
> > Your suggestion will be greatly appreciated.
>
> You should find exactly which command hangs.
> It might be as simple as a fs that it cannot umount because it's busy.
> Or maybe something like Fedora trying to umount a network file system after
> the network has been shut down.
>
> In doubt, check the health of your disk with fsck, badblocks and
> smartmontools.
>
> --
> André Gillibert
>
>
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>

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Re: [linux-lvm] Unmounting file system hangs up...

[André Gillibert]

Thinking Outside the Well <rod.rook@gmail.com> wrote:

> I agree you are right on your suggestion that Fedora is trying to umount a
> network file system. I think it actually is trying to umount a CentOS file
> system installed in another hard drive. The reason why I think that way is
> that whenever I log on to CentOS, it complains that something is wrong with
> the file system and checks it
> 
Not properly unmounting a network (NFS, CIFS, etc.) mount point shouldn't break the target file system in any way, and shouldn't cause fsck to report errors.
Is CentOS hard drive on another computer?
In that case, what network file system protocol is used, if any?
If it's local hard drive, then, it's probably mounted as local file system (ext3 or other), and, not properly unmounting it, may cause fsck to complain.

The contents of /etc/fstab and /etc/mtab or /proc/mounts may help you.

fstab contains a static list of fs mounted at boot time.
mtab and /proc/mounts contain the list of currently mounted file systems, including ones that might have been automatically mounted by your desktop environment when HAL notified it.

-- 
André Gillibert

Re: [linux-lvm] Unmounting file system hangs up...

[Thinking Outside the Well]

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Here is what is in /etc/fstab.
#
# /etc/fstab
# Created by anaconda on Mon Sep  7 20:25:11 2009
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or vol_id(8) for more info
#
UUID=878c124d-0271-4dd7-95d1-e6c95439220c /                       ext3
defaults        1 1
UUID=3511be5f-909d-44c5-a806-2e1d00d21dc4 /home                   ext3
defaults        1 2
UUID=8ee04c46-a36e-484d-824c-661c07f4c126 /boot                   ext3
defaults        1 2
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
UUID=917a7154-8448-4c94-a230-7bd4be54e571 swap                    swap
defaults        0 0

CentOS-5 is on a hard drive of the same computer. /etc/fstab does not
explicitly mount CentOS-5, but Fedora-10 somehow mounts all hard drives
including NTFS drives. I must have done something to do this, but I forgot
what I did. Do you have any idea what I did and how I remedy this situation?



On Sun, Oct 4, 2009 at 12:11 PM, André Gillibert <rcvxdg@gmail.com> wrote:

> Thinking Outside the Well <rod.rook@gmail.com> wrote:
>
> > I agree you are right on your suggestion that Fedora is trying to umount
> a
> > network file system. I think it actually is trying to umount a CentOS
> file
> > system installed in another hard drive. The reason why I think that way
> is
> > that whenever I log on to CentOS, it complains that something is wrong
> with
> > the file system and checks it
> >
> Not properly unmounting a network (NFS, CIFS, etc.) mount point shouldn't
> break the target file system in any way, and shouldn't cause fsck to report
> errors.
> Is CentOS hard drive on another computer?
> In that case, what network file system protocol is used, if any?
> If it's local hard drive, then, it's probably mounted as local file system
> (ext3 or other), and, not properly unmounting it, may cause fsck to
> complain.
>
> The contents of /etc/fstab and /etc/mtab or /proc/mounts may help you.
>
> fstab contains a static list of fs mounted at boot time.
> mtab and /proc/mounts contain the list of currently mounted file systems,
> including ones that might have been automatically mounted by your desktop
> environment when HAL notified it.
>
> --
> André Gillibert
>
>
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>

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Re: [linux-lvm] Unmounting file system hangs up...

[André Gillibert]

Thinking Outside the Well <rod.rook@gmail.com> wrote:

> CentOS-5 is on a hard drive of the same computer. /etc/fstab does not
> explicitly mount CentOS-5, but Fedora-10 somehow mounts all hard drives
> including NTFS drives. I must have done something to do this, but I forgot
> what I did. Do you have any idea what I did and how I remedy this situation?
> 

Two things may concur to this automatic mount.
1) hald (Hardware Abstraction Layer Daemon)
This informs software about which hardware, including hard drives, is currently connected, and when removable drives are inserted or removed.
2) The desktop or file manager (nautilus on GNOME, konqueror or dolphin on KDE).
It gets the list of connected devices from hald, through the d-bus system, and, may automatically mount cold plugged and hot plugged drives.

As I neither use GNOME, nor KDE, I don't know what exact setting triggers this behavior, but, ideally, you should configure the relevant application (nautilus, dolphin or konqueror) to disable this behavior, or make them properly unmount the drives.

-- 
André Gillibert

Re: [linux-lvm] Unmounting file system hangs up...

[Thinking Outside the Well]

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Thanks you for your advice, Andre.

rod

On Sun, Oct 4, 2009 at 4:02 PM, André Gillibert <rcvxdg@gmail.com> wrote:

> Thinking Outside the Well <rod.rook@gmail.com> wrote:
>
> > CentOS-5 is on a hard drive of the same computer. /etc/fstab does not
> > explicitly mount CentOS-5, but Fedora-10 somehow mounts all hard drives
> > including NTFS drives. I must have done something to do this, but I
> forgot
> > what I did. Do you have any idea what I did and how I remedy this
> situation?
> >
>
> Two things may concur to this automatic mount.
> 1) hald (Hardware Abstraction Layer Daemon)
> This informs software about which hardware, including hard drives, is
> currently connected, and when removable drives are inserted or removed.
> 2) The desktop or file manager (nautilus on GNOME, konqueror or dolphin on
> KDE).
> It gets the list of connected devices from hald, through the d-bus system,
> and, may automatically mount cold plugged and hot plugged drives.
>
> As I neither use GNOME, nor KDE, I don't know what exact setting triggers
> this behavior, but, ideally, you should configure the relevant application
> (nautilus, dolphin or konqueror) to disable this behavior, or make them
> properly unmount the drives.
>
> --
> André Gillibert
>
>
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>

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