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Bug: HA takes a lot of time to migrate VMs (trigger HA) to another KVM

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host if there are multiple storage pools in a cluster.

The issue is as follows:
1. When CloudStack detects that a host is not responding to ping
requests it'll send a fence command for this host to another host in the
cluster.
2. The agent takes a long time to respond to this check if the storage
is fenced. This is because the agent checks if the first host is writing
to its heartbeat file on all pools in the cluster. It is doing this in a
sequential manner on all storage pool.

Making a fix to get rid of sleep, wait during HA. The behavior is now
similar to Xenserver.

RB: https://reviews.apache.org/r/6133/
Send-by:devdeep.singh@citrix.com
This commit is contained in:
Edison Su 2012-07-25 10:16:13 -07:00
parent 3fedd56adb
commit f497c7c031
2 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
agent/src/com/cloud/agent/resource/computing/KVMHAChecker.java
View File

@ -53,7 +53,7 @@ public class KVMHAChecker extends KVMHABase implements Callable<Boolean> {
cmd.add("-h", _hostIP);
cmd.add("-r");
cmd.add("-t",
String.valueOf((_heartBeatUpdateFreq + _heartBeatUpdateTimeout) / 1000 * 2));
String.valueOf(_heartBeatUpdateFreq/1000));
OutputInterpreter.OneLineParser parser = new OutputInterpreter.OneLineParser();
String result = cmd.execute(parser);
s_logger.debug("pool: " + pool._poolIp);

12
scripts/vm/hypervisor/kvm/kvmheartbeat.sh
View File

@ -133,14 +133,14 @@ write_hbLog() {
}
check_hbLog() {
oldTimeStamp=$(cat $hbFile)
sleep $interval &> /dev/null
newTimeStamp=$(cat $hbFile)
if [ $newTimeStamp -gt $oldTimeStamp ]
now=$(date +%s)
hb=$(cat $hbFile)
diff=`expr $now - $hb`
if [ $diff -gt $interval ]
then
return 0
return 1
fi
return 1
return 0
}
if [ "$rflag" == "1" ]