Le 01/10/2016 11:11, Rick Moen a écrit :
Quoting Didier Kryn ([email protected]):
I'm not happy with Grub2 (I preferred Grub-legacy), but it works
with the default version of mdadm's superblock. According to the
doc, Lilo works with the old 0.90 mode only, because the superblock
is at the end of the partition and it doesn't see it.
I'm sorry, but _where_ in the Boot+Root+Raid+LILO HOWTO does it say
that? I see a couple of mentions of raidtools-0.90, but absolutely
nothing that says lilo works with 'old 0.90 mode only'.
In the last sentence of the following paragraph:
----------
3.1 Booting RAID 1 with standard LILO
To make the boot information redundant and easy to maintain, set up a
small RAID1 and mount it on the */boot* directory of your system disk.
LILO does not know about device 0x9?? and can not find the information
at boot time because the raid sub system is not active then. As a simple
work around, you can pass LILO the geometry information of the drive(s)
and from that, LILO can determine the position of the information needed
to load the kernel even though it is on the RAID1 partition. This is
because the RAID1 partition is the same as a standard partition but with
a raid super-block written at the end.
-----------
This works with RAID1 and with superblock version 0.90 because, if
you ignore the superblock at the end, the partitions look exactly like
containing a bare filesystem (and are identical). It is only visible
that these are part of a RAID1 if you can decode the superblock at the
end. Any application knowing nothing of a RAID would work the same,
reading only one disk.
With newer versions, the superblock is at the beginning, so that
the above doesn't apply.
Didier
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