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#942 AMF: SC failover during standby SC shutdown causes app problems
If system shutdown including opensaf on the standby controller is in progress when a SC failover happens, applications can have problems accessing opensaf services.
For example if some AMF modeled component tries to write and close a checkpoint as the last thing it does before exit, it gets stuck because there is no ckpt service available.
Proposed is to escalate the graceful shutdown to non-graceful, see attached patch.
During opensaf shutdown on any node, AMNFD removes assignments from all
the components.
After successful removal of assignments, all the components are cleaned up.
During removal of assignments all services will be available for
applications.
An application will keep only system resources for cleanup and not any
opensaf related.
So this problem is in removal or cleanup phase during shutdown?
Thanks
Praveen
On 12-Jun-14 4:48 PM, Hans Feldt wrote:
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#942From: Praveen [mailto:praveenmalviya@users.sf.net]
Sent: den 13 juni 2014 10:22
To: [opensaf:tickets]
Subject: [opensaf:tickets] Re: #942 AMF: SC failover during standby SC shutdown causes app problems
During opensaf shutdown on any node, AMNFD removes assignments from all
the components.
After successful removal of assignments, all the components are cleaned up.
During removal of assignments all services will be available for
applications.
An application will keep only system resources for cleanup and not any
opensaf related.
So this problem is in removal or cleanup phase during shutdown?
[Hans] removal, SC standby being shutdown, SC failover happens. App stuck accessing opensaf services
Thanks
Praveen
On 12-Jun-14 4:48 PM, Hans Feldt wrote:
[tickets:#942]http://sourceforge.net/p/opensaf/tickets/942/ http://sourceforge.net/p/opensaf/tickets/942/ AMF:
SC failover during standby SC shutdown causes app problems
Status: unassigned
Milestone: 4.3.3
Created: Thu Jun 12, 2014 11:18 AM UTC by Hans Feldt
Last Updated: Thu Jun 12, 2014 11:18 AM UTC
Owner: nobody
If system shutdown including opensaf on the standby controller is in
progress when a SC failover happens, applications can have problems
accessing opensaf services.
For example if some AMF modeled component tries to write and close a
checkpoint as the last thing it does before exit, it gets stuck
because there is no ckpt service available.
Proposed is to escalate the graceful shutdown to non-graceful, see
attached patch.
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[tickets:#942]http://sourceforge.net/p/opensaf/tickets/942/ AMF: SC failover during standby SC shutdown causes app problems
Status: unassigned
Milestone: 4.3.3
Created: Thu Jun 12, 2014 11:18 AM UTC by Hans Feldt
Last Updated: Thu Jun 12, 2014 11:18 AM UTC
Owner: nobody
If system shutdown including opensaf on the standby controller is in progress when a SC failover happens, applications can have problems accessing opensaf services.
For example if some AMF modeled component tries to write and close a checkpoint as the last thing it does before exit, it gets stuck because there is no ckpt service available.
Proposed is to escalate the graceful shutdown to non-graceful, see attached patch.
Sent from sourceforge.net because you indicated interest in https://sourceforge.net/p/opensaf/tickets/942/
To unsubscribe from further messages, please visit https://sourceforge.net/auth/subscriptions/
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#942On 13-Jun-14 1:57 PM, Hans Feldt wrote:
Thanks,
Praveen
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#942I think this situation can arise on Act controller as well during si swap.
1. stop Act controller.
2. Keep gdb in application remove callback.
3. Perform si-swap.
So, in this case, do we want to cleanup? If yes, then patch attached needs correction.
Thanks
-Nagu
changeset: 5440:8a9922b1a259
branch: opensaf-4.3.x
parent: 5425:2708a5dae72f
user: hans.feldt@ericsson.com
date: Thu Jun 26 14:04:52 2014 +0530
summary: amfnd : speed up shutdown of standby SC upon failover during its shutdown [#942]
changeset: 5441:6c22d0adee66
branch: opensaf-4.4.x
parent: 5426:6c5ec93a5b68
user: hans.feldt@ericsson.com
date: Thu Jun 26 14:05:10 2014 +0530
summary: amfnd : speed up shutdown of standby SC upon failover during its shutdown [#942]
changeset: 5442:f76e4b952685
tag: tip
parent: 5439:ec5147693bd5
user: hans.feldt@ericsson.com
date: Thu Jun 26 14:05:21 2014 +0530
summary: amfnd : speed up shutdown of standby SC upon failover during its shutdown [#942]
[staging:8a9922]
[staging:6c22d0]
[staging:f76e4b]
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#942Commit: [6c22d0]
Commit: [8a9922]
Commit: [f76e4b]