Add support for custom libvirt volume pool name

Allow users to configure a custom libvirt storage pool name instead of
the hardcoded "oooq_pool" default. This is useful for environments that
require specific storage pool naming conventions or want to use existing
pools.

Changes:
- Add LIBVIRT_VOLUME_POOL environment variable with default "oooq_pool"
- Pass libvirt_volume_pool to ansible-playbook in 02_configure_host.sh
- Document the new variable in config_example.sh

Author: eliorerz

02_configure_host.sh

@@ -139,6 +139,7 @@ ansible-playbook \
     -e "num_workers=$NUM_WORKERS" \
     -e "num_extraworkers=$NUM_EXTRA_WORKERS" \
     -e "libvirt_firmware=$LIBVIRT_FIRMWARE" \
+    -e "libvirt_volume_pool=$LIBVIRT_VOLUME_POOL" \
     -e "virthost=$HOSTNAME" \
     -e "vm_platform=$NODES_PLATFORM" \
     -e "sushy_ignore_boot_device=$REDFISH_EMULATOR_IGNORE_BOOT_DEVICE" \

common.sh

@@ -250,6 +250,7 @@ ROOT_DISK_NAME=${ROOT_DISK_NAME-"/dev/sda"}
 # Length of DHCP leases
 export DHCP_LEASE_EXPIRY=${DHCP_LEASE_EXPIRY:-60}
 export LIBVIRT_FIRMWARE=${LIBVIRT_FIRMWARE:-uefi}
+export LIBVIRT_VOLUME_POOL=${LIBVIRT_VOLUME_POOL:-oooq_pool}
 
 FILESYSTEM=${FILESYSTEM:="/"}
 

config_example.sh

@@ -645,6 +645,13 @@ set -x
 #
 # export VM_EXTRADISKS_SIZE="10G"
 
+# LIBVIRT_VOLUME_POOL -
+# Configure the name of the libvirt storage pool where VM disk images will be stored.
+# This is useful if you want to use a custom storage pool instead of the default.
+# Default: "oooq_pool"
+#
+# export LIBVIRT_VOLUME_POOL="my_custom_pool"
+
 ################################################################################
 ## Image Registry Settings
 ##