Re: Remote Resue Disk
Supposing linux does NOT boot up properly (eg. automatic e2fsck does not
fix disk, and needs to be run manually), is it possible, using your serial
getty solution, to SEE the screen and input anything at that point? That
sounds like it might help solve lots of problems... but not if it only
starts AFTER e2fsck is suppose to run.
----- Original Message -----
From: "Michael R. Schwarzbach" <email@example.com>
To: "Florian Friesdorf" <firstname.lastname@example.org>; <email@example.com>
Sent: Monday, June 18, 2001 1:04 AM
Subject: RE: Remote Resue Disk
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> > -----Original Message-----
> > From: Florian Friesdorf [mailto:firstname.lastname@example.org]On Behalf Of
> > Florian Friesdorf
> > Sent: Sonntag, 17. Juni 2001 16:40
> > To: email@example.com
> > Subject: Re: Remote Resue Disk
> > On Sat, Jun 16, 2001 at 05:02:55PM +0800, Jason Lim wrote:
> > > Hi all,
> > >
> > > I was about to develop my own "Remove Rescue Disk)... but thought
> > > maybe you had a better idea or had already done this...
> > >
> > > Regularly if the hard disk fails or needs a manual fsck (usually
> > > just pressing y throughout), then it means a trip to the
> > > datacenter
> > at whatever
> > > ungodly hour it may be for this relatively simple task.
> > >
> > > If it was possible to create a boot disk with a simple telnetd
> > > (and minimum network support) and static e2fsck utilities, then,
> > > in
> > theory, all
> > > that needs to be done is to insert the disk, reboot the server,
> > > and the telnetd binds to a special, pre-defined IP just for this
> > > emergency purpose. Then I can telnet in from home or wherever,
> > > run
> > e2fsck, mount the
> > > drives, see /var/log/syslog, etc. to see what went wrong. After
> > > the repairs, the disk can be removed, and server rebooted.
> > >
> > > Does this sound realistic? Even if 2 disks or even 3 were
> > required, if it
> > > means I can save a trip to the datacenter it would be worthwhile
> > > to do.
> > >
> > > Perhaps you guys have thought of something similar, or maybe
> > there already
> > > IS something like this out there? Any ideas/suggestions would be
> > > greatly appreciated.
> > Another approach would be, (however you need at least 2 computers)
> > to connect the computers serial ports with null-modem cables and
> > tell lilo and the kernel to use the serial port as console.
> > You then logon on the one computer to get the console of the other.
> > Kind of a cheap console server.
> > I have not tried it, but I think it should work.
> > Could someone comment on this?
> > florian
> Hi Flo!
> I'm using this solution for my ISDN-Router. This is a small linux-box
> with no vga-card. You have to add the line "console=ttyS0" to your
> lilo config, and then you can use a terminal program (minicom, etc.)
> to control the box. If you add a serial getty in your /etc/inittab,
> you have a console too. (this is very usefull, if your nic isn't
> working:) )
> Michael Schwarzbach
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