[1595] in RedHat Linux List
Re: Weird mount problem!
daemon@ATHENA.MIT.EDU (Info junkie)
Tue Oct 29 07:49:01 1996
Date: Tue, 29 Oct 1996 07:57:46 -0500 (EST)
From: Info junkie <junkie@glcom.com>
To: redhat-list@redhat.com
In-Reply-To: <199610271731.MAA09705@sojurn.lns.pa.us>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
Thanks to both you and paul for the response; but this doesnt solve my
problem
On Sun, 27 Oct 1996, Mike Sangrey wrote:
> >
> > I have a weird problem. Here are my mounts (as read from fstab).
> >
> > ----
> > #
> > # /etc/fstab
> > #
> > # You should be using fstool (control-panel) to edit this!
> > #
> > # <device> <mountpoint> <filesystemtype> <options> <dump> <fsckorder>
> >
> > /dev/hda2 / ext2 defaults 1 1
> > /dev/hdc1 /a ext2 defaults 1 1
> > /dev/hda1 /dosc msdos defaults 0 0
> > /dev/hdb /mnt/cdrom iso9660 ro 0 0
> > /dev/fd0 /mnt/floppy ext2 defaults,noauto 0 0
> > /dev/hda3 none ext2 defaults 0 0
> > /proc /proc proc defaults
> > /dev/hda4 none swap sw
> > /dev/hdc2 none swap sw
> > ----------
> >
> >
> > I have never had to use /dev/hda3 so it was normally just sitting there.
> >
> > Now i need to use it, so i thought pas problem; i'll just mount it
> >
> > ----
> > [root@glink /root]# mount /dev/hda3 -t ext2 /home
> > [root@glink /root]# cd /home
> > [root@glink /home]# ls
> > lost+found
> > [root@glink /home]#
> > -----
> >
> > And now /home/* files are gone! What is going on?
> >
>
> Actually, they're not gone. They're just...sorta...underneath.
>You need to create another directory, "/home1", maybe. That will be
> what's called a "mount point". See your /etc/fstab for examples of
>"mount points." Then you can mount "/dev/hda3 on /home1.
>
> By way of explanation: there exists on Suns a _transparent_ filesystem.
>Picture this: you mount your CDROM on the mount point "/mnt/cdrom".
> You then mount /dev/hda3 as a transparent filesystem on top of
> "/mnt/cdrom". A transparent filesystem differs from a regular
>filesystem in that the underlying filesystem "shines through", much like
>a regular printed page would "shine through" an acetate sheet laid on
>top. What is neat about this, is you can then change files that are on
>that CDROM (or at least the changes appear to "hit" the CDROM).
>However, the changed files get written to /dev/hda3. It has real world
>application to Revision Control Systems where revisions are mapped as
>layers on top of the underlying version. >
[The above quoting here for clarity]
Here we go:
[root@glink /]# df
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/hda2 991000 851669 88125 91% /
/dev/hdc1 991000 501679 438117 53% /a
/dev/hda1 354592 226224 128368 64% /dosc
[root@glink /]# ls -l
.
.
drwxr-xr-x 22 root root 1024 Oct 29 07:48 home
drwxr-xr-x 2 root root 1024 Oct 29 07:38 home1
.
.
note home1 created via symbolic link to home.
mount /dev/hda3 -t ext2 /home1
[root@glink /]# mount -t ext2 /dev/hda3 /home1
[root@glink /]# df
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/hda2 991000 851669 88125 91% /
/dev/hdc1 991000 501679 438117 53% /a
/dev/hda1 354592 226224 128368 64% /dosc
/dev/hda3 634239 13 601466 0% /home1
[root@glink /]# find /home1
/home1
/home1/lost+found
note that home1 has exactly the same problem as home when mounted
onto hda3 which is on the same disk.
My plan was to offload that 91% full partition (/dev/hda2)
by moving the /home to /dev/hda3
Maybe i am not seeing what you are pointing out.
Another FAQ question?
cheers
jamal
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