Re: rescue bootable cd ???
I suppose is possible to make an USB-flash bootable eable to assemble
the raid/lvm in boot time ready to repair the faulty system, is n't
it?
the floppy equivalent just to bring up the old system, or work with it
in a chroot...
On 10/2/07, Lennart Sorensen <lsorense@csclub.uwaterloo.ca> wrote:
> On Tue, Oct 02, 2007 at 07:08:11AM -0500, helices wrote:
> > Unfortunately, both systems on which I experienced such calamity ran lvm
> > over software raid 5. In fact, both systems ran lilo, not grub; and
> > everything was under lvm, including root and boot. Under these
> > circumstances, there is specific configuration information missing, and
> > that prevents the debian install cd, and knoppix, from being able to
> > read my disks ;<
> >
> > When I started this thread, I was thinking about the olden days, when I
> > (tried to remember to) ma[dk]e a boot floppy after each new kernel ;>
>
> Of course in those days you didn't run software raid5 and lvm either, so
> perhaps that is why those boot disks worked in the first place.
>
> Nothing prevents you from assembling a raid using mdadm and scanning for
> lvm volumes and bringing those up from a knoppix dvd. I have done it
> and it can be done. Try not to screw up badly enough to need it, since
> it is a bit of a pain. :)
>
> Just don't touch mdadm --create and you should be safe. You just want
> to assemble the raid, and then find the PVs, bring up the VG and then
> activate the volumes and mount the LVs.
>
> --
> Len Sorensen
>
>
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