[Linuxtrent] Re: Lilo: keytable read/checksum error
- From: paolo massei <paoafr@xxxxxx>
- To: linuxtrent@xxxxxxxxxxxxx
- Date: Mon, 21 Feb 2011 00:43:14 +0100
* domenica 20 febbraio 2011, alle 23:28, Antonio Galea wrote:
> 2011/2/20 paolo massei <paoafr@xxxxxx>:
> >
> > Dimenticavo: lilo istallato nell'MBR e
> > /boot = /dev/md1
> > dichiarato nel .conf
>
> Nell'MBR di _tutti_ i dischi di /dev/md1?
Credo[1] di si.
La parte buffa e' che finche' non ho aggiornato al kernel di --current,
il tutto ha funzionato bene.
[1] LEggendo la doc di lilo-2.22.8 si direbbe di si, a meno che non abbia
inteso male questo qui:
------------ dal README-rai1 --------------------------
NSTALLATION ON A RAID SET
==========================
A RAID installation of the LILO boot loader is initiated by
specifying that the boot record is to be placed in the boot area of
a RAID partition. This is accomplished by the 'boot=' line in the
LILO configuration file, '/etc/lilo.conf'. For instance, a system
running with '/dev/md1' mounted as root ('/'), would use the line:
boot = /dev/md1
to initiate a RAID installation. As directed, the boot record is
written to the RAID partition. Unfortunately, in the event of
failure of the RAID set disk from which booting occurs, the boot record
on the surviving disk(s) will only be usable if the disks are entirely
"parallel" to the disk that originally booted the system.
To continue, we first need some terminology for talking about RAID 1
partitions.
TERMINOLOGY
===========
RAID 1 writes the same data to the corresponding disk blocks of the
partitions which make up the RAID set. Two partitions are said to be
"parallel" if they start at exactly the same sector address on their
respective drives. This means that files on the two disks have their
data written at exactly the same absolute sector addresses on both
drives.
Two partitions are said to be "skewed" if they do not start at the
same sector address on their respective drives. Data within each
partition will be at the same offset from the beginning of each
partition, but not at the same absolute sector address.
------------------- ecc ecc -------------------------------
Io, avendo fatto le partizioni esattamente identiche, dovrei esser nel
caso "parallel".
P.
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