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Add --migrate feature: near-live migrate between clusters

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Bastian Mäuser
2023-03-22 14:40:01 +01:00
parent 010f04c412
commit 5bf37e886c
2 changed files with 49 additions and 23 deletions
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68
crossover
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@@ -16,7 +16,7 @@ declare opt_influx_summary_metrics='crossover_jobs'
# Cross Pool Migration and incremental replication Tool for Proxmox VMs using Ceph.
# Author: Bastian Mäuser <bma@netz.org>
declare -r VERSION=0.6
declare -r VERSION=0.7
declare -r NAME=$(basename "$0")
declare -r PROGNAME=${NAME%.*}
@@ -66,6 +66,7 @@ declare -i opt_keepslock=0
declare -i opt_keepdlock=0
declare -i opt_overwrite=0
declare -i opt_online=0
declare -i opt_migrate=0
declare opt_keep_local='0s'
declare opt_keep_remote='0s'
@@ -116,8 +117,9 @@ Options:
--influxtoken Influx API token with write permission
--influxbucket Influx Bucket to write to (e.g. --influxbucket=telegraf/autogen)
--jobname Descriptive name for the job, used in Statistics
Switches:
Switches:
--online Allow online Copy
--migrate Stop VM on Source Cluster before final Transfer and restart on destination Cluster
--nolock Don't lock source VM on Transfer (mainly for test purposes)
--keep-slock Keep source VM locked on Transfer
--keep-dlock Keep VM locked after transfer on Destination
@@ -137,7 +139,7 @@ function parse_opts(){
local args
args=$(getopt \
--options '' \
--longoptions=vmid:,prefixid:,excludevmids:,destination:,pool:,keeplocal:,keepremote:,rewrite:,influxurl:,influxorg:,influxtoken:,influxbucket:,jobname:,online,nolock,keep-slock,keep-dlock,overwrite,dry-run,debug \
--longoptions=vmid:,prefixid:,excludevmids:,destination:,pool:,keeplocal:,keepremote:,rewrite:,influxurl:,influxorg:,influxtoken:,influxbucket:,jobname:,online,migrate,nolock,keep-slock,keep-dlock,overwrite,dry-run,debug \
--name "$PROGNAME" \
-- "$@") \
|| end_process 128
@@ -159,8 +161,8 @@ function parse_opts(){
--influxtoken) opt_influx_token=$2; shift 2;;
--influxbucket) opt_influx_bucket=$2; shift 2;;
--jobname) opt_influx_jobname=$2; shift 2;;
--online) opt_online=1; shift 2;;
--online) opt_online=1; shift ;;
--migrate) opt_migrate=1; shift ;;
--dry-run) opt_dry_run=1; shift;;
--debug) opt_debug=1; shift;;
--nolock) opt_lock=0; shift;;
@@ -202,6 +204,11 @@ function parse_opts(){
fi
fi
if [ $opt_keepdlock -eq 1 ] && [ $opt_migrate -eq 1 ]; then
log error "--keepdlock/--migrate: Invalid parameter Combination: you can't keep the destination locked in near-live migration mode"
end_process 255
fi
if [ "$opt_vm_ids" = "all" ]; then
local all=''
local data=''
@@ -445,7 +452,7 @@ function mirror() {
if [ $host_on_destination ]; then
dststatus=$(ssh root@${dstpvnode[$dvmid]} qm status $dvmid|cut -d' ' -f 2)
if [ $dststatus == "running" ]; then
log error "Destination VM is running. bailing out"
log error "VM is running on Destination. bailing out"
end_process 255
fi
fi
@@ -466,6 +473,12 @@ function mirror() {
map_vmids_to_dsthost "$opt_destination"
fi
#--move so we need to shutdown?
if [ $opt_migrate -eq 1 ]; then
log info "VM $vm_id - Shutting down VM on ${pvnode[$vm_id]}"
do_run "ssh root@"${pvnode[$vm_id]}" qm shutdown "$vm_id >/dev/null
fi
#Lock on source + destination
if [ $opt_lock -eq 1 ]; then
do_run "ssh root@"${pvnode[$vm_id]}" qm set "$vm_id" --lock backup" >/dev/null
@@ -473,14 +486,16 @@ function mirror() {
do_run "ssh root@"${dstpvnode[$dvmid]}" qm set "$dvmid" --lock backup" >/dev/null
log info "VM $dvmid - locked $dvmid [rc:$?]"
fi
vm_freeze "$vm_id" "${pvnode[$vm_id]}" >/dev/null
freezerc=$?
if [ $freezerc -gt 0 ]; then
log error "VM $vm_id - QEMU-Guest could not fsfreeze on guest."
(( perf_freeze_failed++ ))
else
(( perf_freeze_ok++ ))
#Freeze fs only if no migration running
if [ $opt_migrate -eq 0 ]; then
vm_freeze "$vm_id" "${pvnode[$vm_id]}" >/dev/null
freezerc=$?
if [ $freezerc -gt 0 ]; then
log error "VM $vm_id - QEMU-Guest could not fsfreeze on guest."
(( perf_freeze_failed++ ))
else
(( perf_freeze_ok++ ))
fi
fi
for disk in $(get_disks_from_config "$file_config"); do
src_image_spec=$(get_image_spec "$disk")
@@ -493,16 +508,17 @@ function mirror() {
(( perf_ss_ok++ ))
fi
done
vm_unfreeze "$vm_id" "${pvnode[$vm_id]}" >/dev/null
unfreezerc=$?
if [ $unfreezerc -gt 0 ]; then
log error "VM $vm_id - QEMU-Guest could not fsunfreeze on guest."
if [ $opt_migrate -eq 0 ]; then
vm_unfreeze "$vm_id" "${pvnode[$vm_id]}" >/dev/null
unfreezerc=$?
if [ $unfreezerc -gt 0 ]; then
log error "VM $vm_id - QEMU-Guest could not fsunfreeze on guest."
fi
if [ ! $opt_keepslock -eq 1 ]; then
do_run "ssh root@${pvnode[$vm_id]} qm unlock $vm_id" >/dev/null
log info "VM $vm_id - unlocked source VM $vm_id [rc:$?]"
fi
fi
if [ ! $opt_keepslock -eq 1 ]; then
do_run "ssh root@${pvnode[$vm_id]} qm unlock $vm_id" >/dev/null
log info "VM $vm_id - unlocked source VM $vm_id [rc:$?]"
fi
for disk in $(get_disks_from_config "$file_config"); do
(( diskcount++ ))
log debug "VMID: $vm_id Disk: $disk DESTVMID: $dvmid"
@@ -601,6 +617,12 @@ function mirror() {
ssh root@${dstpvnode[$dvmid]} qm unlock $dvmid
log info "VM $dvmid - Unlocking destination VM $dvmid"
fi
#--migrate so start on destination?
if [ $opt_migrate -eq 1 ]; then
log info "VM $dvmid - Starting VM on ${pvnode[$vm_id]}"
do_run "ssh root@"${dstpvnode[$dvmid]}" qm start "$dvmid >/dev/null
fi
done
endjob=$(date +%s)
log info "Finnished mirror $(date "+%F %T")"