and I'm not surprised. rhel3 uses grub 0.93 and this is the very
version I had to make patches for to run earlier versions of
SystemImager. I tried running 3.7.3 w/o my patches and the system
wouldn't boot, with them it would.
To back up, here's the problem - and it's NOT with system imager, it's
with grub and systemconfigurator!
I've had to patch 3 files, 2 in systemconfigurator and 1 grub-install.
The thing I've done is to NOT change the image, but rather put the
patched files into my overrides. Furthermore, the files I've patched
are from an earlier systemconfigurator - 2.0.6 but they seem to work
just fine when I overlay them on top of 2.2.2. I hope this makes sense...
The problem stems from several thing, mainly that grub incorrectly
generates a grub.devices file and so cannot be allowed to do so. This
means that in Grub.pm you need to see if you're dealing with cciss (or
ida) and if so do not tell it to generate a new file. There's also a
place where grub gets called with --recheck. and this cannot be allowed
either. In the older versions of systemimager, it didn't populate
/etc/mtab which caused systemconfigurator to blow up but that may no
longer be necessary. Anyhow, here's what I did for this one:
--- /usr/lib/systemconfig/Boot/Grub.pm 2002-12-18 11:29:31.000000000 -0500
+++ Grub.pm 2004-06-11 14:51:51.000000000 -0400
@@ -173,16 +173,25 @@
sub device_map {
my $grub = shift;
my $device_map = {};
-
+ my $smartArrayFlag = 0; # assume NOT Compaq SmartArrary device
+
my $file = "/tmp/grub.devices";
if(-e $file) {
unlink $file;
}
- my $cmd = "$grub --batch --device-map=$file < /dev/null > /dev/null";
- !system($cmd) or croak("Couldn't run $cmd");
-
- verbose("generated device map file $file");
+ # prevent generation of new/wrong device map for smart array devices
+ if (`grep -E "cciss|ida" /proc/partitions` eq '') {
+ my $cmd = "$grub --batch --device-map=$file < /dev/null >
/dev/null";
+ system($cmd) or croak("Couldn't run $cmd");
+ verbose("generated device map file $file");
+ }
+ else {
+ $smartArrayFlag=1;
+ $file="/boot/grub/device.map";
+ verbose("using existing map file $file");
+ croak("$file doesn't contain required 'hd' entry for SmartArray
devices") if `grep hd $file` eq '';
+ }
open(IN,"<$file");
@@ -194,7 +203,7 @@
$device_map->{$real} = $grub;
}
close(IN);
- unlink $file;
+ unlink $file unless $smartArrayFlag;
return $device_map;
}
@@ -228,14 +237,31 @@
sub install_loader {
my $this = shift;
my $bootdev = $this->{bootdev};
- system("$$this{bootloader_exe} --recheck '$$this{bootdev}'");
+
+ # if a smart array device present we need to do special things!
+ my $recheck='--recheck';
+ my $smartArrayFlag=`grep -E "cciss|ida" /proc/partitions` eq '' ? 0
: 1;
+ if ($smartArrayFlag)
+ {
+ $recheck='';
+ if (-z "/etc/mtab")
+ {
+ verbose("creating new /etc/mtab from /proc/mounts");
+ system("grep ext /proc/mounts > /etc/mtab");
+ }
+ }
+
+ verbose("$$this{bootloader_exe} $recheck '$$this{bootdev}'");
+ system("$$this{bootloader_exe} $recheck '$$this{bootdev}'");
my $grubroot = find_grub_root();
verbose("Grub root set to '$grubroot'");
+ # apparently we only need the device map if smart array (because
this wasn't originally done)
+ my $devmap = $smartArrayFlag ? '--device-map=/boot/grub/device.map'
: '';
my $install_cmd = <<END_GRUB;
-$$this{grub} <<EOF > /dev/null
+$$this{grub} $devmap <<EOF > /dev/null
root $grubroot
setup $bootdev
EOF
A second problem is in Labels.pm where again, the wrong this gets done
for cciss. These are my changes to it, noting that since device formats
have changed in 3.7.3 it may no longer be necessary, but I didn't want
to start playing around with different permutations of patches (at least
not yet):
--- /usr/lib/systemconfig/Boot/Label.pm 2003-04-10 17:57:56.000000000 -0400
+++ Label.pm 2004-06-11 14:57:22.000000000 -0400
@@ -64,8 +64,10 @@
my ($junk, $major, $minor, $blocks, $name, $rio, $rmerge,
$rsect, $ruse, $wio, $wmerge, $wsect, $wuse, $runn, $ng, $use, $aveq) =
split (/\s+/,$_);
my $device = "/dev/". devfs_lookup($name);
# only get labels for partitions
+ # if Compaq SmartArray we need to convert device name format
if($device =~ /\d+$/) {
verbose("getting label for $device");
+ $device=smartArrayCvt($device) if $device
=~/cciss\/disc|ida\/disc/;
my $label = dev2label($device);
if($label) {
verbose("label is $label");
@@ -121,4 +123,19 @@
return $struct;
}
+# Map cciss or ida devices to the format /dev/cciss/c0d0p0 OR
/dev/ida/c0d0p0
+sub smartArrayCvt
+{
+ my $device=shift;
+ my ($type,$p1,$p2,$disk,$part);
+
+ # This will map /dev/cciss/disc0/part1 OR /dev/ida/disc0/part1
+ ($type,$p1,$p2)=(split(/\//,$device))[2..4];
+ $p1=~/(\d+)/;
+ $disk=$1;
+ $p2=~/(\d+)/;
+ $part=$1;
+ return("/dev/$type/c0d${disk}p${part}");
+}
+
1;
And finally, here's what I did to grub-install:
--- /sbin/grub-install 2004-05-21 13:35:15.000000000 -0400
+++ grub-install 2004-06-14 10:29:10.000000000 -0400
@@ -79,22 +79,30 @@
# Convert an OS device to the corresponding GRUB drive.
# This part is OS-specific.
convert () {
+
+ # patch to remap /dev/cciss/discY/partZ or /dev/ida/discY/partZ to
c0dYpZ
+ tmp_1=$1
+ tmp_1=`echo "$1" | sed -e 's%cciss/disc\([0-9]\)$%cciss/c0d\1p1%' \
+ -e
's%cciss/disc\([0-9]\)/part\([0-9]\)%cciss/c0d\1p\2%' \
+ -e 's%ida/disc\([0-9]\)$%ida/c0d\1p1%' \
+ -e
's%ida/disc\([0-9]\)/part\([0-9]\)%ida/c0d\1p\2%'`
+
# First, check if the device file exists.
- if test -e "$1"; then
+ if test -e "$tmp_1"; then
:
else
- echo "$1: Not found or not a block device." 1>&2
+ echo "$tmp_1: Not found or not a block device." 1>&2
exit 1
fi
# Break the device name into the disk part and the partition part.
case "$host_os" in
linux*)
- tmp_disk=`echo "$1" | sed -e 's%\([sh]d[a-z]\)[0-9]*$%\1%' \
+ tmp_disk=`echo "$tmp_1" | sed -e 's%\([sh]d[a-z]\)[0-9]*$%\1%' \
-e 's%\(fd[0-9]*\)$%\1%' \
-e 's%/part[0-9]*$%/disc%' \
-e 's%\(c[0-7]d[0-9]*\).*$%\1%'`
- tmp_part=`echo "$1" | sed -e 's%.*/[sh]d[a-z]\([0-9]*\)$%\1%' \
+ tmp_part=`echo "$tmp_1" | sed -e 's%.*/[sh]d[a-z]\([0-9]*\)$%\1%' \
-e 's%.*/fd[0-9]*$%%' \
-e 's%.*/floppy/[0-9]*$%%' \
-e 's%.*/\(disc\|part\([0-9]*\)\)$%\2%' \
@@ -127,7 +135,7 @@
# If not found, print an error message and exit.
if test "x$tmp_drive" = x; then
- echo "$1 does not have any corresponding BIOS drive." 1>&2
+ echo "$tmp_1 does not have any corresponding BIOS drive." 1>&2
exit 1
fi
@@ -331,6 +339,10 @@
if test -f "$device_map"; then
:
else
+ # This is only an error for cciss/ida devices, but if we don't say
something the user won't
+ # know what's going on if things fail for unknown reasons
+ echo "*** grub-install can't find device.map. if /dev/cciss or
/dev/ida device something is seriouslyong"
+
# Create a safe temporary file.
test -n "$mklog" && log_file=`$mklog`
I had actually tracked down where grub itself was in error, but did't
want to get into trying to patch it so I simply sent the fixes to the
developers and perhaps that's why the latest version of grub does seem
to work correctly.
I hope all this makes sense because I did this work a loooong time ago
and probably don't remember every little subtlety
-mark
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