QubesOS/qubes-linux-kernel
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vm-initramfs: use sysfs directly to get block device parameters

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Don't use blkdev program, as isn't installed by default by dracut in FC17.
Actually it isn't necessary to get 'ro' and 'size' parameters, as they can be
read directly from sysfs.
This commit is contained in:
Marek Marczykowski 2012-06-15 13:19:44 +02:00
parent f27df0e0bb
commit da5a960584
1 changed files with 3 additions and 3 deletions
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6
vm-initramfs/lib/dracut/hooks/pre-udev/90_qubes_cow_setup.sh
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@ -14,18 +14,18 @@ modprobe xenblk || modprobe xen-blkfront || echo "Qubes: Cannot load Xen Block F
echo "Waiting for /dev/xvda* devices..."
while ! [ -e /dev/xvda ]; do sleep 0.1; done
if [ `blockdev --getro /dev/xvda` = 1 ] ; then
if [ `cat /sys/block/xvda/ro` = 1 ] ; then
echo "Qubes: Doing COW setup for AppVM..."
while ! [ -e /dev/xvdc ]; do sleep 0.1; done
while ! [ -e /dev/xvdc2 ]; do sleep 0.1; done
echo "0 `blockdev --getsz /dev/xvda` snapshot /dev/xvda /dev/xvdc2 N 16" | \
echo "0 `cat /sys/block/xvda/size` snapshot /dev/xvda /dev/xvdc2 N 16" | \
dmsetup create dmroot || { echo "Qubes: FATAL: cannot create dmroot!"; }
echo Qubes: done.
else
echo "Qubes: Doing R/W setup for TemplateVM..."
echo "0 `blockdev --getsz /dev/xvda` linear /dev/xvda 0" | \
echo "0 `cat /sys/block/xvda/size` linear /dev/xvda 0" | \
dmsetup create dmroot || { echo "Qubes: FATAL: cannot create dmroot!"; exit 1; }
echo Qubes: done.
fi