Hi
Folks,
I'm wondering if
somebody can point me in the right direction:
A problem
occurs very early in the boot process on a Fedora 7 system: mdadm
can't find the devices needed to assemble /dev/md1 which contains an LVM
volume group. The specific problem appears to be the "mdadm: no devices found,"
which is followed by a few related problems and ends with a Kernel
Panic:
...
Red Hat nash 6.0.9
starting
insmod: error
inserting '/lib/raid456.ko': -1 File exists
mdadm: no devices
found for /dev/md1
Reading
all physical volumes. This may take a while...
No
volume groups found
Volume
group "vg0" not found
Unable to access
resume device (/dev/vg0/lv0)
...
(The system used to
work fine even though the raid456.ko message always
appeared.)
The system was
working fine up to last night when I think the temperature rose too high and it
crashed. The funny thing is that if I boot the F7 DVD in rescue mode the system
image is discovered and mounted without any trouble.
I may have messed
things up at some point by booting the F7 rescue mode and
executing
# grub-install
/dev/sda1
when I should have
used
# grub-install
/dev/sda
I'd really
appreciate it if somebody could point me to some documentation on this stage of
the boot process (mounting raid/lvm file systems.)
I'd also appreciate
any help understanding why mdadm can't figure out what devices to use for
an array - there must be a way to fix that. The way the system is now, I need to
create an mdadm.conf file before the --assemble command will work (isn't
mdadm supposed to be able to figure out what devices to use without the
conf file?) Perhaps there's a solution hiding in that
direction.
Thanks very
much,
All the
best,
Sam.
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