Check your network switches. You probably need to turn off SPANNING TREE. On a cisco, that could be: spanning-tree portfast enable (for a switch port) spanning-tree portfast trunk enable (for a trunk port) (check syntax for other switch vendors)
If you leave Spanning-tree on, there is about a 45 second delay before the port becomes ready.
--tmac Tim McCarthy Principal Consultant
RedHat Certified Engineer 804006984323821 (RHEL4) 805007643429572 (RHEL5)
On Mon, Feb 6, 2012 at 6:03 AM, Alexander Griesser ag@anexia.at wrote:
Hello John,
IIRC, the failover time can be up to 120 seconds which is why your connected systems need to have the correct disk and read timeout values set. For VMware ESX, you should install the vSphere Host utlities on the server which take care of the correct timeout values.
I’m not sure what you mean with „many nfs servers are connected via iscsi connections“, since this sounds a bit odd.
Bye,
Alexander Griesser
System-Administrator
ANEXIA Internetdienstleistungs GmbH
Telefon: +43-463-208501-320
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Von: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] Im Auftrag von John Sfetsoris Gesendet: Montag, 06. Februar 2012 11:21
An: toasters@teaparty.net Cc: jalterweb@yahoo.gr Betreff: Fas 3240 failover delay
Hello everybody
I have a Fas3204 HA in two seperate chassis , dataontap version 8.02P3 7mode. Many NFS servers are connected to it via iscsi connections. NFS servers are VMware mashines . VMware version is VSPERE 5. There are 4-5 Vfilers running. When i force a failover from the one controler to other, the NFS clients
have a delay about 30-40 seconds. Is this normal? Can i do something to investigate/tune the failover proccess?
thnks in advance
John
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