Re: NFS client in 'rescue shell' from install DVD?
On Fri, 13 Mar 2015 08:15:24 +0000, Ron Leach wrote:
> List, good morning,
>
> I started and continuing with a separate thread about a boot problem but
> have a specific query about the rescue shell and NFS, which I thought
> worth having as a separate short topic.
>
> It's a wheezy system, running under the rescue shell provided by the
> install DVD. I wanted to copy some config files from the wheezy machine
> onto an archive area on an nfs system. If I try to mount an nfs export
> from another machine, onto a mount point in the filesystem seen by the
> 'rescue shell' from the install DVD, the mount command fails, reporting
>
> # mount 192.168.0.200:/srv /mnt/nfs/srv mount.nfs no such device
>
> Some notes:
>
> There is an entry in fstab for this mount, so there was no need to
> provide all the parameters.
>
> 192.168.0.200:/srv is being exported, and is seen by other machines.
>
> /mnt/nfs/srv exists in the rescue shell filesystem, and can be 'cd''d
> to.
>
> Does the error message mean that there is no nfs client available in the
> rescue shell?
>
> Is there any way round this? There is an nfs client, somewhere in the
> filesystem that the rescue shell can see, for example, if there was a
> method to invoke it.
>
> regards, Ron
As I recall it, booting to rescue from the DVD doesn't necessarily enable
networking (and other things), as it has no idea about the parameters. I
believe if you try to, it will mount / as ro so that it can get at /etc/
network/interfaces (or at least that's how I remember it working).
If you *do* have the network connection live, and are still getting the
error, then it might be because your /dev/sda (or whatever) is mounted as
ro, so you cannot add the entry in /mnt for the NFS share. You might
have to use something that doesn't rely on a mounted partition (e.g. scp
or rsync) to move the files in question.
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