I wrote a script to automate the grub correction after aligning Linux VM's that use the Grub bootloader.
Assumptions:
- NFS datastore mounted to helper VM under /vmfs/volumes with same name
- vmware-mount utility located under /usr/bin
#!/bin/bash
DISKNAME=`echo $2 | sed 's/.*\///g' | sed 's/\.vmdk//g'`
mkdir "/mnt/$DISKNAME";
vmware-mount -f "/vmfs/volumes/$1/$2" "/mnt/$DISKNAME";
echo "(hd1) /mnt/$DISKNAME/flat" > "/tmp/$DISKNAME.map";
grub --batch --device-map="/tmp/$DISKNAME.map" <
root (hd1,0)
setup (hd1)
quit
EOF
vmware-mount -k "/vmfs/volumes/$1/$2";
rmdir "/mnt/$DISKNAME";
rm "/tmp/$DISKNAME.map";
Then use like:
/root/fixGrub.sh nfs_entprf01_linux_vol001 testvm/testvm.vmdk
