Question on raid1 root problems (fwd)
I've got a setup here for root software raid1, installed a few months ago.
Running woody, on a pair of 40 gig IDE drives, installed as /dev/hda and
/dev/hdc.
I installed the raid1 root as per the documentation on tldp.org
We had a power outage over the weekend, and when the system came back up,
it had the install from BEFORE i setup raid1.
So I found out which one of the raid volumes, of /dev/hda1 and /dev/hdc1
was the right one and up to date, and did the following to force a resync
since it obviously never did do one, even though i watched /proc/mdstat do one
when i created the array those few months ago:
raidsetfaulty /dev/md0 /dev/hdc1
# to knock the /dev/hdc1 out of the array, since it's bad
# at this point, this should leave me running solely off hda1
cat /proc/mdstat
# (verified it was now kicked out)
badblocks -w /dev/hdc1
At this point, it complained that /dev/hdc1 was mounted. Which of course
was false, I had just broken the raid volume three comands before, and
verified it was ofline.
So i badblock -wf /dev/hdc1
Trashed the file system, even though /dev/md0 was supposedly only working
off /dev/hda1
I've now spent the entire day trying to get /dev/hda1 copied over and the
raid array rebuilt. Finally got it going, with the problem of lilo not
working now:
Fatal: map file must be on the boot RAID partition.
Ah, but /boot IS on the boot RAID partition of /dev/md0. !!@!!!@#(*!@#*(
Is there another hidden location for this map file? It's supposed to be
in /boot, right?
Why hasn't this bug been fixed? I've seen reports of it from 4 years ago
on google/deja.
Mike
lba32
# Generated by liloconfig
# Specifies the boot device
boot=/dev/md0
# Specifies the device that should be mounted as root.
# If the special name CURRENT is used, the root device is set to the
# device on which the root file system is currently mounted. If the root
# has been changed with -r , the respective device is used. If the
# variable ROOT is omitted, the root device setting contained in the
# kernel image is used. It can be changed with the rdev program.
root=/dev/md0
# Enables map compaction:
# Tries to merge read requests for adjacent sectors into a single
# read request. This drastically reduces load time and keeps the map
# smaller. Using COMPACT is especially recommended when booting from a
# floppy disk.
compact
# Install the specified file as the new boot sector.
# If INSTALL is omitted, /boot/boot.b is used as the default.
install=/boot/boot.b
# Specifies the number of _tenths_ of a second LILO should
# wait before booting the first image. LILO
# doesn't wait if DELAY is omitted or if DELAY is set to zero.
delay=20
# Specifies the location of the map file. If MAP is
# omitted, a file /boot/map is used.
map=/boot/map
# Specifies the VGA text mode that should be selected when
# booting. The following values are recognized (case is ignored):
# NORMAL select normal 80x25 text mode.
# EXTENDED select 80x50 text mode. The word EXTENDED can be
# abbreviated to EXT.
# ASK stop and ask for user input (at boot time).
# <number> use the corresponding text mode. A list of available modes
# can be obtained by booting with vga=ask and pressing [Enter].
vga=normal
image=/vmlinuz
label=Linux
read-only
# If you have another OS on this machine (say DOS),
# you can boot if by uncommenting the following lines
# (Of course, change /dev/hda2 to wherever your DOS partition is.)
# other=/dev/hda2
# label=dos
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