[ale] invisible mounting points on RHEL 5.1

[Jerry Yu]

/mnt/m1 is on the NFS server.
It was created as such by a 3rd-party tool:
Mkdir /mnt/m1
Mount -t ext3 -o loop img1 /mnt/m1

We have 200 such directories.

On 10/14/08, Tim Meanor <timothy at meanor.net> wrote:
> Sounds like automounter behavior to me, too.  Does m1 show up in the
> output of "ls -la /mnt/*"?  If so, then most likely it's an
> automounted fs (via autofs or maybe amd).
>
> -Tim
>
> On Mon, Oct 13, 2008 at 5:35 PM, Jerry Yu <jjj863 at gmail.com> wrote:
>> They are regular NFS exports. The /mnt/m1 is my attempt to simplify my
>> question. They are under /opt/mnt/appName1/m1 for client #1.
>>
>> On 10/13/08, Jeff Lightner <jlightner at water.com> wrote:
>>> I'm confused by this.  You must have added the "/mnt/m1" as it is NOT a
>>> stock part of RHEL5.
>>>
>>>
>>>
>>> Are you sure this isn't something you've configured in /etc/fstab or in
>>> automounter?  I've seen some very strange behavior when attempting to
>>> manually do things with filesystems put under automounter control.
>>>
>>>
>>>
>>> ________________________________
>>>
>>> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
>>> Jerry Yu
>>> Sent: Monday, October 13, 2008 4:21 PM
>>> To: ALE
>>> Subject: [ale] invisible mounting points on RHEL 5.1
>>>
>>>
>>>
>>> On a stock RHEL 5.1 server, an ext3 fs image (i1) is mounted as loopback
>>> at /mnt/m1. /mnt/m1 is exported as NFS share to be used by a RHEL 5.1
>>> client.
>>>
>>> Not sure since when, on the NFS server,
>>>
>>> *     one can not see m1 when ls /mnt anymore.   Meanwhile,
>>> *     'cd /mnt/m1' and 'ls /mnt/m1' and  file creation under /mnt/m1
>>> all work just fine under /mnt/m1.
>>> *     mkdir /mnt/m1 fails saying '/mnt/m1 is present'
>>> *     /proc/mounts still have /mnt/m1 listed as mounted loopback.
>>> *     umounting /mnt/m1 & mounting it back works just fine.  still
>>> cannot see 'm1' under /mnt.
>>> *     /mnt/m1 is under constant use by the NFS clients, so 'rm -rf' or
>>> 'umount' of /mnt/m1 from the server actually fails.
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