devstack/lib/cinder_backends/ceph
Yuriy Nesenenko a6bbe031f1 Fix restoring a backup volume to a larger volume
We cannot restore a backup to a larger volume on ceph because it
fails with status "error_restoring". This patch adds read/write
permissions to volumes pool for backup user. We need such permissions
to change volume size during restoring backup when the backup is
smaller than a volume.

Change-Id: I794c1126bcee4e07baf5a9dcfee779fd61da5636
Closes-Bug: 1519749
2015-12-23 16:40:44 +02:00

84 lines
3.1 KiB
Bash

#!/bin/bash
#
# lib/cinder_backends/ceph
# Configure the ceph backend
# Enable with:
#
# CINDER_ENABLED_BACKENDS+=,ceph:ceph
#
# Optional parameters:
# CINDER_BAK_CEPH_POOL=<pool-name>
# CINDER_BAK_CEPH_USER=<user>
# CINDER_BAK_CEPH_POOL_PG=<pg-num>
# CINDER_BAK_CEPH_POOL_PGP=<pgp-num>
# Dependencies:
#
# - ``functions`` file
# - ``cinder`` configurations
# configure_ceph_backend_lvm - called from configure_cinder()
# Save trace setting
_XTRACE_CINDER_CEPH=$(set +o | grep xtrace)
set +o xtrace
# Defaults
# --------
CINDER_BAK_CEPH_POOL=${CINDER_BAK_CEPH_POOL:-backups}
CINDER_BAK_CEPH_POOL_PG=${CINDER_BAK_CEPH_POOL_PG:-8}
CINDER_BAK_CEPH_POOL_PGP=${CINDER_BAK_CEPH_POOL_PGP:-8}
CINDER_BAK_CEPH_USER=${CINDER_BAK_CEPH_USER:-cinder-bak}
# Entry Points
# ------------
# configure_cinder_backend_ceph - Set config files, create data dirs, etc
# configure_cinder_backend_ceph $name
function configure_cinder_backend_ceph {
local be_name=$1
iniset $CINDER_CONF $be_name volume_backend_name $be_name
iniset $CINDER_CONF $be_name volume_driver "cinder.volume.drivers.rbd.RBDDriver"
iniset $CINDER_CONF $be_name rbd_ceph_conf "$CEPH_CONF"
iniset $CINDER_CONF $be_name rbd_pool "$CINDER_CEPH_POOL"
iniset $CINDER_CONF $be_name rbd_user "$CINDER_CEPH_USER"
iniset $CINDER_CONF $be_name rbd_uuid "$CINDER_CEPH_UUID"
iniset $CINDER_CONF $be_name rbd_flatten_volume_from_snapshot False
iniset $CINDER_CONF $be_name rbd_max_clone_depth 5
iniset $CINDER_CONF DEFAULT glance_api_version 2
if is_service_enabled c-bak; then
sudo ceph -c ${CEPH_CONF_FILE} osd pool create ${CINDER_BAK_CEPH_POOL} ${CINDER_BAK_CEPH_POOL_PG} ${CINDER_BAK_CEPH_POOL_PGP}
if [ "$REMOTE_CEPH" = "False" ]; then
# Configure Cinder backup service options, ceph pool, ceph user and ceph key
sudo ceph -c ${CEPH_CONF_FILE} osd pool set ${CINDER_BAK_CEPH_POOL} size ${CEPH_REPLICAS}
if [[ $CEPH_REPLICAS -ne 1 ]]; then
sudo ceph -c ${CEPH_CONF_FILE} osd pool set ${CINDER_BAK_CEPH_POOL} crush_ruleset ${RULE_ID}
fi
fi
sudo ceph -c ${CEPH_CONF_FILE} auth get-or-create client.${CINDER_BAK_CEPH_USER} mon "allow r" osd "allow class-read object_prefix rbd_children, allow rwx pool=${CINDER_BAK_CEPH_POOL}, allow rwx pool=${CINDER_CEPH_POOL}" | sudo tee ${CEPH_CONF_DIR}/ceph.client.${CINDER_BAK_CEPH_USER}.keyring
sudo chown $(whoami):$(whoami) ${CEPH_CONF_DIR}/ceph.client.${CINDER_BAK_CEPH_USER}.keyring
iniset $CINDER_CONF DEFAULT backup_driver "cinder.backup.drivers.ceph"
iniset $CINDER_CONF DEFAULT backup_ceph_conf "$CEPH_CONF"
iniset $CINDER_CONF DEFAULT backup_ceph_pool "$CINDER_BAK_CEPH_POOL"
iniset $CINDER_CONF DEFAULT backup_ceph_user "$CINDER_BAK_CEPH_USER"
iniset $CINDER_CONF DEFAULT backup_ceph_stripe_unit 0
iniset $CINDER_CONF DEFAULT backup_ceph_stripe_count 0
iniset $CINDER_CONF DEFAULT restore_discard_excess_bytes True
fi
}
# Restore xtrace
$_XTRACE_CINDER_CEPH
# Local variables:
# mode: shell-script
# End: