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Have RedHat installs reduce risk of overwriting SAN volumes. The strategy:

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BIOS drive 80 is chosen if at all possible (don't know EFI way yet)
Failing that, first virtio block device
Failing that, then first block device served by ata_piix4, ahci, megaraid_sas, pmcraid
Failing that, first mptsas or mpt2sas
Failing that, first block device

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@12360 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
This commit is contained in:
jbjohnso
2012-04-26 18:41:18 +00:00
parent 7ddb1fa4aa
commit 8250bc1673
1 changed files with 48 additions and 4 deletions
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52
xCAT-server/share/xcat/install/scripts/pre.rh
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@@ -126,6 +126,49 @@ chmod 755 /tmp/foo.py
/tmp/foo.py >/foo.log 2>&1 &
#time to ascertain fstype and PReP/UEFI/legacy
#also, find first available block device (sda or vda likely)
#TODO: pick a likely non-SAN target if possible
shopt -s nullglob
for disk in /dev/vd*[^0-9];do
if [ -z "$firstdirectdisk" ]; then firstdirectdisk=$disk; fi #remember first disk as a guess of medium resort
eddname=$(/lib/udev/edd_id $disk 2> /dev/null)
if [ ! -z "$eddname" -a "$eddname" = "int13_dev80" ]; then
instdisk=$disk
break
fi
done
if [ -z "$instdisk" ]; then
for disk in /dev/sd*[^0-9]; do
eddname=$(/lib/udev/edd_id $disk 2> /dev/null)
if [ ! -z "$eddname" -a "$eddname" = "int13_dev80" ]; then
instdisk=$disk
break
fi
currdriver=`udevadm info --attribute-walk --name $disk |grep DRIVERS|grep -v '""'|grep -v '"sd"'|head -n 1|sed -e 's/[^"]*"//' -e 's/"//'`
case "$currdriver" in
"ata_piix4"|"PMC MaxRAID"|"ahci"|"megaraid_sas") #certainly direct
if [ -z "$firstdirectdisk" ]; then firstdirectdisk=$disk; fi #remember first disk as a guess of medium resort
;;
"mptsas"|"mpt2sas") #*PROBABLY* not SAN, but SAS SAN is possible
if [ -z "$probablyfirstdirectdisk" ]; then probablyfirstdirectdisk=$disk; fi #remember first disk as a guess of medium resort
;;
*)
if [ -z "$firstdisk" ]; then firstdisk=$disk; fi #remember first disk as a guess of medium resort
;;
esac
done
fi
if [ -z "$instdisk" ]; then
if [ ! -z "$firstdirectdisk" ]; then
instdisk=$firstdirectdisk
elif [ ! -z "$probablyfirstdirectdisk" ]; then
instdisk=$probablyfirstdirectdisk
elif [ ! -z "$firstdisk" ]; then
instdisk=$firstdisk
fi
fi
modprobe ext4 >& /dev/null
modprobe ext4dev >& /dev/null
if grep ext4dev /proc/filesystems > /dev/null; then
@@ -136,13 +179,14 @@ else
FSTYPE=ext3
fi
if [ `uname -m` = "ppc64" ]; then
echo 'part None --fstype "PPC PReP Boot" --size 8' >> /tmp/partitioning
echo 'part None --fstype "PPC PReP Boot" --ondisk $instdisk --size 8' >> /tmp/partitioning
fi
if [ -d /sys/firmware/efi ]; then
echo 'part /boot/efi --size 50 --fstype vfat' >> /tmp/partitioning
echo 'part /boot/efi --size 50 --ondisk $instdisk --fstype vfat' >> /tmp/partitioning
fi
#TODO: ondisk detection, /dev/disk/by-id/edd-int13_dev80 for legacy maybe, and no idea about efi. at least maybe blacklist SAN if mptsas/mpt2sas/megaraid_sas seen...
echo "part swap --size 1024" >> /tmp/partitioning
echo "part / --size 1 --grow --fstype $FSTYPE" >> /tmp/partitioning
echo "part boot --size 256 --fstype ext3 --ondisk $instdisk" >> /tmp/partitioning
echo "part swap --recommended --ondisk $instdisk" >> /tmp/partitioning
echo "part / --size 1 --grow --ondisk $instdisk --fstype $FSTYPE" >> /tmp/partitioning