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executable file 54 lines (47 sloc) 1.135 kb
#!/bin/sh
function usage
{
echo
echo Usage:
echo $0 "<VDI uuid> [ command to execute, defaults to /bin/sh ]"
echo
echo Block attaches a VDI to the control domain, executes a command \(typically a shell\),
echo detaches and destroys the VBD when the command finishes.
}
VDI=$1
# check that the VDI actually exists
if [ -z "$(xe vdi-list params=uuid uuid=${VDI})" ]; then
echo Failed to find VDI with UUID: ${VDI}
usage
exit 1
fi
COMMAND=$2
if [ -n "$COMMAND" ]; then
if ! which "$COMMAND" > /dev/null ; then
echo Failed to find command: ${COMMAND}
usage
exit 1
else
shift 1
COMMAND=$*
fi
fi
. @INVENTORY@
if [ `xe vdi-param-get uuid=${VDI} param-name=read-only` = "true" ] ; then
MODE=RO
else
MODE=RW
fi
VBD=`xe vbd-create vm-uuid=${CONTROL_DOMAIN_UUID} vdi-uuid=${VDI} device=autodetect mode=${MODE} unpluggable=true`
xe vbd-plug uuid=${VBD}
DEVICE=`xe vbd-param-get uuid=${VBD} param-name=device`
export DEVICE
if [ -z "$COMMAND" ]; then
echo DEVICE=${DEVICE}
COMMAND=/bin/sh
fi
${COMMAND}
RC=$?
xe vbd-unplug uuid=${VBD} timeout=15
xe vbd-destroy uuid=${VBD}
exit ${RC}
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