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Diffstat (limited to 'config.d/10shareddisk.defconf')
| -rw-r--r-- | config.d/10shareddisk.defconf | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/config.d/10shareddisk.defconf b/config.d/10shareddisk.defconf deleted file mode 100644 index 7a66ebd..0000000 --- a/config.d/10shareddisk.defconf +++ /dev/null @@ -1,311 +0,0 @@ -# Hey Emacs, this is a -*- shell-script -*- !!! - -###################################################################### - -defconf SHAREDDISKSIZE "10G" \ - "<n>G" "size of the 3 shared disks" - -defconf SHAREDDISK_COUNT "3" \ - "<n>" "the number of shared disks" - -defconf SHAREDDISK_TEMPLATE "|shared_disk_template" \ - "<file>" "libvirt template fragment for shared disks" - -defconf SHARED_DISK_TYPE "virtio" \ - "scsi|ide|virtio|iscsi" "type of disks to use for shared disks" - -defconf SHARED_DISK_PREFIX "@uto" \ - "sd|hd|vd" "shared disk device prefix" - -defconf SHARED_DISK_CACHE "default" \ - "default|none|writeback|writethrough" "shared disk cache type" - -defconf SHARED_DISK_FIRST_SUFFIX "" \ - "|a|b|..." "override for 1st shared disk suffix - usually calculated by shared_disk_template()" - -defconf SHARED_DISK_MULTIPATH_NUMPATHS "2" \ - "<n>" "number of paths to create for each shared disk" - -defconf SHARED_DISK_MULTIPATH_CALLOUT "/sbin/scsi_id_autocluster.sh %n" \ - "<command>" "" - -defconf SHARED_DISK_ID_GEN "shared_disk_id_default" \ - "<command>" "function/command for creating shared disk ids" - -########## - -defconf ISCSI_HOST "$KVMHOST" \ - "<ip-addr>" "host machine serving our iSCSI targets" - -defconf ISCSI_PORT "3260" \ - "<port>" "port serving our iSCSI targets" - -defconf ISCSI_IQN "iqn.1969-08" \ - "<string>" "iSCSI qualified name for targets" - -defconf ISCSI_TID "1" \ - "<num>" "iSCSI target ID" - -defconf ISCSI_DEFAULT_TEMPLATE "$installdir/templates/iSCSI-default" \ - "<file>" "template for iSCSI default file" - -defconf ISCSI_ST_CONFIG_TEMPLATE "$installdir/templates/iSCSI-st_config" \ - "<file>" "template for iSCSI st_config file" - - -############################## - -shared_disk_template () -{ - # Don't do anything for iSCSI. - [ "$SHARED_DISK_TYPE" != "iscsi" ] || return 0 - - local paths="${1:-${SHARED_DISK_MULTIPATH_NUMPATHS}}" - local first="${2:-${SHARED_DISK_FIRST_SUFFIX}}" - - if [ -z "$first" ] ; then - if [ "$SYSTEM_DISK_PREFIX" = "$SHARED_DISK_PREFIX" ] ; then - first="b" - else - first="a" - fi - fi - - local -a devices=($(eval echo {${first}..z} {a..z}{a..z})) - - local p SHARED_DISK_NUM - local n=0 - for SHARED_DISK_NUM in $(seq 1 $SHAREDDISK_COUNT) ; do - local DISK="${VIRTBASE}/${CLUSTER}/shared${SHARED_DISK_NUM}" - run_hooks hack_disk_hooks "shared" - local serial=$(awk "{ print \$${SHARED_DISK_NUM} }" <<<"$SHARED_DISK_IDS") - for p in $(seq 1 $paths) ; do - local dev="${devices[$n]}" - [ -n "$dev" ] || die "Too many shared disks! The function shared_disk_template needs to be hacked to allow more shared disks..." - cat <<EOF - <disk type='file' device='disk'> - <driver name='qemu' cache='@@SHARED_DISK_CACHE@@'/> - <source file='${DISK}'/> - <target dev='@@SHARED_DISK_PREFIX@@${dev}' bus='@@SHARED_DISK_TYPE@@'/> - <serial>${serial}</serial> - <shareable/> - </disk> -EOF - n=$(($n + 1)) - done - done -} - -############################## - -shared_disk_post_config_hook() -{ - if [ "$SHARED_DISK_PREFIX" = "@uto" ] ; then - SHARED_DISK_PREFIX=$(rhel_disk_prefix $SHARED_DISK_TYPE) - fi -} - -register_hook post_config_hooks shared_disk_post_config_hook - -register_hook create_cluster_hooks shared_disk_setup - -shared_disk_setup () -{ - SHARED_DISK_IDS="" - _SHARED_DISK_TEMPLATE="" - - # Early exit if no shared disks - have_shared_disks || return 0 - - if [ "$SHARED_DISK_TYPE" = "iscsi" ] ; then - iscsi_out="tmp/iscsi.${CLUSTER}" # Global, not local. - - cat <<EOF >"$iscsi_out" -tgt-admin --delete tid=${ISCSI_TID} --force -tgtadm --lld iscsi --mode target --op new \ - --tid ${ISCSI_TID} -T ${ISCSI_IQN}.${CLUSTER}:tgtd -EOF - local uc=$(echo "$CLUSTER" | tr a-z A-Z) - fi - - echo "Creating ${SHAREDDISK_COUNT} shared disks" - local SHARED_DISK_NUM - for SHARED_DISK_NUM in $(seq 1 $SHAREDDISK_COUNT); do - local DISK="$VIRTBASE/$CLUSTER/shared${SHARED_DISK_NUM}" - run_hooks hack_disk_hooks "shared" - local di="$DISK" - if [ "$DISK_FOLLOW_SYMLINKS" = "yes" -a -L "$DISK" ] ; then - di=$(readlink "$DISK") - fi - rm -f "$di" - local di_dirname="${di%/*}" - mkdir -p "$di_dirname" - - if [ "$SHARED_DISK_TYPE" = "iscsi" ] ; then - dd if=/dev/zero seek=$SHAREDDISKSIZE bs=1 count=1 of="$di" - - local paths=$SHARED_DISK_MULTIPATH_NUMPATHS # readability - local zc=$(printf "%03d" $SHARED_DISK_NUM) - local p - for p in $(seq 1 $paths) ; do - local lun=$(($paths * ($SHARED_DISK_NUM - 1) + $p)) - # vendor_id AUTCLSTR used by /etc/init.d/iscsimultipath - cat <<EOF >>"$iscsi_out" -tgtadm --lld iscsi --mode logicalunit --op new \ - --tid ${ISCSI_TID} --lun ${lun} \ - -b ${DISK} -tgtadm --lld iscsi --mode logicalunit --op update \ - --tid ${ISCSI_TID} --lun ${lun} \ - --params vendor_id=AUTCLSTR,product_id=${uc},product_rev=0001,scsi_sn=SHARE${zc} -EOF - done - else - qemu-img create -f raw "$di" $SHAREDDISKSIZE - fi - # setup a nice ID at the start of the disk - "$SHARED_DISK_ID_GEN" "$SHARED_DISK_NUM" > tmp/diskid - dd if=tmp/diskid of="$di" conv=notrunc bs=1 > /dev/null 2>&1 - local this_id=$(head -n 1 tmp/diskid) - SHARED_DISK_IDS="${SHARED_DISK_IDS}${SHARED_DISK_IDS:+ }${this_id}" - done - echo - - if [ "$SHARED_DISK_TYPE" = "iscsi" ] ; then - register_hook cluster_created_hooks iscsi_cluster_created - fi - register_hook setup_base_hooks shared_disk_setup_base -} - -shared_disk_id_default () -{ - # Disk number argument is ignored - local t="AUTO-$(uuidgen)" - # Length of 13 bytes is historical - echo "${t:0:13}" -} - -shared_disk_setup_base () -{ - node_has_shared_disks "$type" || return 0 - - if [ "$SHARED_DISK_TYPE" = "iscsi" ] ; then - shared_disk_iscsi_setup_base - else - _SHARED_DISK_TEMPLATE="$SHAREDDISK_TEMPLATE" - fi -} - -########## - -node_has_shared_disks_DEFAULT () -{ - false -} - -node_has_shared_disks () -{ - local node_type="$1" - - call_func node_has_shared_disks "$node_type" -} - -have_shared_disks () -{ - [ -n "$SHAREDDISKSIZE" -a -n "$SHAREDDISK_TEMPLATE" -a \ - -n "$SHAREDDISK_COUNT" -a "$SHAREDDISK_COUNT" != 0 ] || \ - return 1 - - local ret=false - - _check () - { - if node_has_shared_disks "$1" ; then - ret=true - fi - } - - for_each_node _check - - $ret -} - -is_dedicated_storage_node_DEFAULT () -{ - false -} - -have_dedicated_storage_nodes () -{ - local ret=false - - _check () - { - if call_func is_dedicated_storage_node "$1" ; then - ret=true - fi - } - - for_each_node _check - - $ret -} - -########## - -# Override this if you use a different scheme for IP addresses. -shared_disk_iscsi_setup_base_get_ip () -{ - echo "${NETWORK_PRIVATE_PREFIX}.${IPNUM}" -} - -shared_disk_iscsi_setup_base () -{ - echo "Setting up iSCSI for shared disks" - - # This simulates what happens when you do something like: - # iscsiadm --mode discovery --type sendtargets --portal 10.0.0.1 - # provided only 1 target is accessible.. - - local idir="/var/lib/iscsi" - - local dd="${idir}/nodes/${ISCSI_IQN}.${CLUSTER}:tgtd/${ISCSI_HOST},${ISCSI_PORT},1" - local d="${dd}/default" - diskimage mkdir_p "${dd}" - diskimage substitute_vars "$ISCSI_DEFAULT_TEMPLATE" "$d" - diskimage chmod 600 "$d" - - local sd="${idir}/send_targets/${ISCSI_HOST},${ISCSI_PORT}" - local s="${sd}/st_config" - diskimage mkdir_p "${sd}" - diskimage substitute_vars "$ISCSI_ST_CONFIG_TEMPLATE" "$s" - diskimage chmod 600 "$s" - - diskimage ln_s "$dd" "/${sd}/${ISCSI_IQN}.${ISCSI_IQN}.${CLUSTER}:tgtd,${ISCSI_HOST},${ISCSI_PORT},1,default" - - # After the iscsi initscript is run, new devices for multipath - # don't seem to be noticed anymore. This enables an initscript - # that ensures that multipath is run when the desired number of - # shared disk paths are available. - diskimage command /sbin/chkconfig --add iscsimultipath - - local ip_addr=$(shared_disk_iscsi_setup_base_get_ip) - cat <<EOF >>"$iscsi_out" -tgtadm --lld iscsi --op bind --mode target --tid ${ISCSI_TID} -I ${ip_addr} -EOF -} - -iscsi_cluster_created () -{ - cat <<EOF - -This cluster uses iSCSI shared disks for the cluster file system. The -commands to configure the iSCSI on the host machine are in the file -"${iscsi_out}". You should now run this file on host $ISCSI_HOST -using "sh ${iscsi_out}". The first command, which deletes an existing -iSCSI target, may fail if there is no existing iSCSI configuration. -However, all other commands should succeed. - -You may also want to copy these commands somewhere so they are run -when $ISCSI_HOST boots (e.g. /etc/rc.local). -EOF -} |