I had an instance with a 2GB cinder volume that I expanded to 10GB but it still reports the volume as having 2GB. Interestingly, making a snapshot of the instance and booting from the new volume it reports the disk as having 10GB. Can someone help me?

Updated with the cinder config:

####################
# cinder.conf sample #
####################

[DEFAULT]

#
# Options defined in cinder.exception
#

# make exception message format errors fatal (boolean value)
#fatal_exception_format_errors=false


#
# Options defined in cinder.policy
#

# JSON file representing policy (string value)
#policy_file=policy.json

# Rule checked when requested rule is not found (string value)
#policy_default_rule=default


#
# Options defined in cinder.quota
#

# number of volumes allowed per project (integer value)
#quota_volumes=10

# number of volume snapshots allowed per project (integer
# value)
#quota_snapshots=10

# number of volume gigabytes (snapshots are also included)
# allowed per project (integer value)
#quota_gigabytes=1000

# number of seconds until a reservation expires (integer
# value)
#reservation_expire=86400

# count of reservations until usage is refreshed (integer
# value)
#until_refresh=0

# number of seconds between subsequent usage refreshes
# (integer value)
#max_age=0

# default driver to use for quota checks (string value)
#quota_driver=cinder.quota.DbQuotaDriver

# whether to use default quota class for default quota
# (boolean value)
#use_default_quota_class=true


#
# Options defined in cinder.service
#

# seconds between nodes reporting state to datastore (integer
# value)
#report_interval=10

# seconds between running periodic tasks (integer value)
#periodic_interval=60

# range of seconds to randomly delay when starting the
# periodic task scheduler to reduce stampeding. (Disable by
# setting to 0) (integer value)
#periodic_fuzzy_delay=60

# IP address for OpenStack Volume API to listen (string value)
#osapi_volume_listen=0.0.0.0
osapi_volume_listen=0.0.0.0

# port for os volume api to listen (integer value)
#osapi_volume_listen_port=8776


#
# Options defined in cinder.test
#

# File name of clean sqlite db (string value)
#sqlite_clean_db=clean.sqlite

# should we use everything for testing (boolean value)
#fake_tests=true


#
# Options defined in cinder.wsgi
#

# Number of backlog requests to configure the socket with
# (integer value)
#backlog=4096

# Sets the value of TCP_KEEPIDLE in seconds for each server
# socket. Not supported on OS X. (integer value)
#tcp_keepidle=600

# CA certificate file to use to verify connecting clients
# (string value)
#ssl_ca_file=<None>

# Certificate file to use when starting the server securely
# (string value)
#ssl_cert_file=<None>

# Private key file to use when starting the server securely
# (string value)
#ssl_key_file=<None>


#
# Options defined in cinder.api.common
#

# the maximum number of items returned in a single response
# from a collection resource (integer value)
#osapi_max_limit=1000

# Base URL that will be presented to users in links to the
# OpenStack Volume API (string value)
#osapi_volume_base_URL=<None>


#
# Options defined in cinder.api.middleware.auth
#

# Treat X-Forwarded-For as the canonical remote address. Only
# enable this if you have a sanitizing proxy. (boolean value)
#use_forwarded_for=false


#
# Options defined in cinder.api.middleware.sizelimit
#

# Max size for body of a request (integer value)
#osapi_max_request_body_size=114688


#
# Options defined in cinder.backup.drivers.ceph
#

# Ceph config file to use. (string value)
#backup_ceph_conf=/etc/ceph/ceph.conf

# the Ceph user to connect with (string value)
#backup_ceph_user=cinder

# the chunk ...