one rvg going constant behind and dont get max bandwidth to replicate data 100%
Operating system version = Linux Redhat 6.2
Storage Foundation version = 6.0 with RP1
LinuxBox1 with two ethernets (primary Site)
Linuxbox2 with two ethernets (DR site)
One NIC(eth0) for users access and second NIC(eth1) is dedicated to replication
Diskgroup = one
volumes = two
replicated volume group = two (each replicated volume group for each volume)
bandwidth link = 25Mbps
Bandwidth limit set = 10Mbps
protocol = UDP
packet size = 1500
I am able to see that one of my volume in the diskgroup can replicate properly and can utilize whole bandwidth for its replication if required and its timestamp under repstatus is behind 0 hours, 0 minutes and 0 seconds. As far as the the another volume is concern when I start replication to this volume under another replicated volume group can utilized max bandwidth as much as it can and after the result of behind 0 hours, 0 minutes and 0 seconds. when it complete synced few kilobytes always keep in SRL and at this time its not taking much bandwidth and the SRL is constently showing few kilobytes it. I can show an example of that RVG below regarding the repstatus and vrstat command . My problem is that why SRL always keeping few KB's although no one is accessing the machine. why the repstatus is not showing behind 0 hours, 0 minutes and 0 seconds
vradmin -g database-DG repstatus database-logs-rvg Mon Jul 9 18:29:28 2012
Replicated Data Set: database-logs-rvg Primary: Host name: 172.16.25.200 RVG name: database-logs-rvg DG name: database-DG RVG state: enabled for I/O Data volumes: 1 VSets: 0 SRL name: database-logs-srl SRL size: 139.00 G Total secondaries: 1 Secondary: Host name: 172.17.27.200 RVG name: database-logs-rvg DG name: database-DG Data status: consistent, behind Replication status: replicating (connected) Current mode: asynchronous Logging to: SRL ( 1738 Kbytes behind, 0 % full Timestamp Information: behind by 1h 34m 6s
vrstat result shows the bandwidth utilization:
Bandwidth Utilization 32.00 Kbps.
Bandwidth Utilization 176.00 Kbps.
Bandwidth Utilization 40.00 Kbps.
Bandwidth Utilization 00.00 Kbps.