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Old 05-17-2012, 10:08 AM
Jonathan Allen
 
Default F16 Mount Issue

Hi All,

On a fully up-to-date F16 system (as of this morning) I have an issue with
remote mounting directories at boot. The machine's /etc/fstab contains
these two lines:

purse:/share /share nfs rw,rsize=8192,wsize=8192,timeo=14,intr,addr=192.16 8.1.10 0 0
mirror:/home /home nfs nfsvers=3,rw,rsize=8192,wsize=8192,timeo=14,intr,a ddr=192.168.1.1 0 0

The first, to an F6 machine, always works. The second, to an F14 machine
never works at boot time, but always works with 'mount -a' done later in a
root (text) login session or 'su' time.

How can I get this to work without manual intervention?

Jonathan
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Old 05-17-2012, 10:16 AM
Tom Horsley
 
Default F16 Mount Issue

On Thu, 17 May 2012 11:08:08 +0100
Jonathan Allen wrote:

> How can I get this to work without manual intervention?

Personally, I use a script in rc.local that checks
/proc/mount against /etc/fstab and tries to mount anything
that isn't already mounted - it is the only way I've found
to make network mounts reliable. Seems hit or miss
otherwise.
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Old 05-17-2012, 10:19 AM
Ed Greshko
 
Default F16 Mount Issue

On 05/17/2012 06:08 PM, Jonathan Allen wrote:
> Hi All,
>
> On a fully up-to-date F16 system (as of this morning) I have an issue with
> remote mounting directories at boot. The machine's /etc/fstab contains
> these two lines:
>
> purse:/share /share nfs rw,rsize=8192,wsize=8192,timeo=14,intr,addr=192.16 8.1.10 0 0
> mirror:/home /home nfs nfsvers=3,rw,rsize=8192,wsize=8192,timeo=14,intr,a ddr=192.168.1.1 0 0
>
> The first, to an F6 machine, always works. The second, to an F14 machine
> never works at boot time, but always works with 'mount -a' done later in a
> root (text) login session or 'su' time.
>
> How can I get this to work without manual intervention?
>
> Jonathan

You can try enabling NetworkManager-wait-online.service.

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Old 05-17-2012, 03:52 PM
"Matthew J. Roth"
 
Default F16 Mount Issue

Tom Horsley wrote:

> Personally, I use a script in rc.local that checks
> /proc/mount against /etc/fstab and tries to mount anything
> that isn't already mounted - it is the only way I've found
> to make network mounts reliable. Seems hit or miss
> otherwise.


Tom,

Do you mind sharing that script? It's a great idea for solving a common problem.

Thanks,

Matthew Roth
InterMedia Marketing Solutions
Software Engineer and Systems Developer
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Old 05-17-2012, 04:39 PM
Tom Horsley
 
Default F16 Mount Issue

On Thu, 17 May 2012 10:52:15 -0500 (CDT)
Matthew J. Roth wrote:

> Do you mind sharing that script? It's a great idea for solving a common problem.

This will probably get mangled due to a few long lines, but I'll give it
a shot.

In the /etc/rc.d/rc.local script I have this line:

/usr/local/bin/bg-mount-nfs

That /usr/local/bin/bg-mount-nfs script looks like:

#!/bin/bash
#
# Background mounts for each of the nfs filesystems appearing in
# /etc/fstab not marked as noauto
#
PATH="/sbin:/usr/sbin:/bin:/usr/bin"
export PATH
sed -e '/^#/d' -e 's/[ ][ ]*/ /g' /etc/fstab | grep -w nfs | grep -w -v noauto | cut -f2 | while read mountpoint
do
nohup /usr/local/bin/mount-filesystem "$mountpoint" > /dev/null 2>&1 < /dev/null &
done

And the /usr/local/bin/mount-filesystem script it backgrounds for each
filesystem looks like:

#!/bin/bash
#
# Argument is a mountpoint, keep trying to mount the thing till
# it appears in /proc/mounts.
#
PATH="/sbin:/usr/sbin:/bin:/usr/bin"
export PATH
if [ -z "$1" ]
then
echo Hey! Missing mountpoint argument! 1>&2
exit 2
fi
check=`sed -e '/^#/d' -e 's/[ ][ ]*/ /g' /etc/fstab | cut -f2 | fgrep -x "$1"`
if [ "$check" = "$1" ]
then
:
else
echo "$1" does not appear as a mountpoint in /etc/fstab! 1>&2
exit 2
fi
while true
do
check=`sed 's/[ ][ ]*/ /g' /proc/mounts | cut -f2 | fgrep -x "$1"`
if [ "$check" = "$1" ]
then
exit 0
fi
if mount "$1" -o fg
then
:
else
sleep 10
fi
done
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Old 05-17-2012, 04:51 PM
"Matthew J. Roth"
 
Default F16 Mount Issue

Tom Horsley wrote:

> This will probably get mangled due to a few long lines, but I'll give it
> a shot.


Tom,

It looks good from here. Thanks for saving me from reinventing that wheel. Just the sed incantations would've taken a while to come up with.

Regards,

Matthew Roth
InterMedia Marketing Solutions
Software Engineer and Systems Developer
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Old 05-17-2012, 04:54 PM
Bill Davidsen
 
Default F16 Mount Issue

Jonathan Allen wrote:

Hi All,

On a fully up-to-date F16 system (as of this morning) I have an issue with
remote mounting directories at boot. The machine's /etc/fstab contains
these two lines:

purse:/share /share nfs rw,rsize=8192,wsize=8192,timeo=14,intr,addr=192.16 8.1.10 0 0
mirror:/home /home nfs nfsvers=3,rw,rsize=8192,wsize=8192,timeo=14,intr,a ddr=192.168.1.1 0 0

The first, to an F6 machine, always works. The second, to an F14 machine
never works at boot time, but always works with 'mount -a' done later in a
root (text) login session or 'su' time.

How can I get this to work without manual intervention?

I would not be surprised if F14 is nfs4, and I've seen similar issues, older
servers using nfs3 work better. it could be related to nfs-idmapd getting going,
can't say for sure.


I don't think Networkmanager-wait-online will help, as the mounts to old
releases need a network, too, and they work.


And you didn't ask, but I'll mention that putting IP addresses in fstab is an
opportunity for simple changes to break things. I have seen people learn this
the hard way, although I didn't.


--
Bill Davidsen <davidsen@tmr.com>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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Old 05-17-2012, 05:05 PM
Rick Stevens
 
Default F16 Mount Issue

On 05/17/2012 09:54 AM, Bill Davidsen wrote:

Jonathan Allen wrote:

Hi All,

On a fully up-to-date F16 system (as of this morning) I have an issue
with
remote mounting directories at boot. The machine's /etc/fstab contains
these two lines:

purse:/share /share nfs
rw,rsize=8192,wsize=8192,timeo=14,intr,addr=192.16 8.1.10 0 0
mirror:/home /home nfs
nfsvers=3,rw,rsize=8192,wsize=8192,timeo=14,intr,a ddr=192.168.1.1 0 0

The first, to an F6 machine, always works. The second, to an F14 machine
never works at boot time, but always works with 'mount -a' done later
in a
root (text) login session or 'su' time.

How can I get this to work without manual intervention?


I would not be surprised if F14 is nfs4, and I've seen similar issues,
older servers using nfs3 work better. it could be related to nfs-idmapd
getting going, can't say for sure.

I don't think Networkmanager-wait-online will help, as the mounts to old
releases need a network, too, and they work.

And you didn't ask, but I'll mention that putting IP addresses in fstab
is an opportunity for simple changes to break things. I have seen people
learn this the hard way, although I didn't.


Are you sure that the local /home disk partition is mounted BEFORE the
NFS mount occurs? It could be that the NFS mount occurs at /home first,
then the local /home mount occurs, overlays the NFS mount and hides it.
Ditto with the /share mountpoint.

Before you do the "mount -a", do a simple "mount" and verify that you
haven't got the local partitions overlaying the NFS mounts.
----------------------------------------------------------------------
- Rick Stevens, Systems Engineer, AllDigital ricks@alldigital.com -
- AIM/Skype: therps2 ICQ: 22643734 Yahoo: origrps2 -
- -
- Overweight: When you step on your dog's tail...and it dies. -
----------------------------------------------------------------------
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Old 05-18-2012, 11:02 AM
Jonathan Allen
 
Default F16 Mount Issue

Rick,

> Are you sure that the local /home disk partition is mounted BEFORE the
> NFS mount occurs? It could be that the NFS mount occurs at /home first,
> then the local /home mount occurs, overlays the NFS mount and hides it.
> Ditto with the /share mountpoint.
>
> Before you do the "mount -a", do a simple "mount" and verify that you
> haven't got the local partitions overlaying the NFS mounts.

No, that all looks exactly clean and as I would have expected it without
the NFS mount. This is running on physical partitions, BTW, rather than
LVM, in case that has anything to do with it.

Jonathan
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