[5610] in RedHat Linux List
Re: Disaster disks?
daemon@ATHENA.MIT.EDU (Tyson D Sawyer)
Fri Nov 22 16:21:56 1996
Date: Fri, 22 Nov 1996 11:20:04 -0500 (EST)
From: Tyson D Sawyer <tyson@rwii.com>
Reply-To: Tyson D Sawyer <tyson@rwii.com>
To: dpsm@en.com
cc: redhat-list@redhat.com
In-Reply-To: <3297ba6c.2545224@en.com>
Resent-From: redhat-list@redhat.com
> On Thu, 21 Nov 1996 16:43:02 -0700, you wrote:
>
> >Ah, but that only solves half the problem. Making a bootable floppy is
> >easy. Making one which will allow you to fix a trashed hard disk is
> >another story. There are all these packages which purport to make useful,
> >floppy-based root filesystems, but they are all a major pain to figure out
> >and use. Sigh.
>
> Yes exactly. I would like to see one bootable disk that had enough
> tools for repairing a broken system or restoring from backup media.
>
> I have been fiddling around with yard, but I am not quite there yet.
>
> Dale
One idea that I have seen mentioned before is having a duplicate root
partitions and putting them on seperate drives if possible. Since
only one root partition is mounted at any time only one should get
trashed. I would recommend setting up lilo on the hard drive so that
it can boot any of the root partitions and also having a boot disk
with a kernel that can mount any of the root paritions.
An other idea that I think is not yet mature is mounting the root
partition read-only. This helps to prevent damage to it. In this
case /tmp /usr /var and /home must all be on seperate partitions from
/ and /etc/mtab is made as a link to /proc/mounts. /proc/mounts isn't
exaclty the same as /etc/mtab but I guess it is close enough. I have
never tried this so there may be other catches that I have not thought
of or read about.
Of course if you want to modify anything in your root partition
(most likely in /etc) you will need to remount / as rw, modify and
then remount ro.
Ty
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