[Pacemaker] The problem with which queue between cib and stonith-ng overflows

Andrew Beekhof andrew at beekhof.net
Tue Jun 3 22:11:55 UTC 2014


On 3 Jun 2014, at 11:26 am, Yusuke Iida <yusk.iida at gmail.com> wrote:

> Hi, Andrew
> 
> About 15 seconds are the time taken in the whole device construction.
> I think that it cannot receive the message from cib during device
> construction since stonith-ng does not return to mainloop.

I'm reasonably sure this is because we do synchronous metadata calls when a device is added.
I'll have a patch which creates a per-agent metadata cache (instead of per device) for you to test later today.

> 
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info: init_cib_cache_cb:
> Updating device list from the cib: init
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info: stonith_level_remove:
> Node vm01 not found (0 active entries)
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm01 has 1 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm01 has 2 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info: stonith_level_remove:
> Node vm02 not found (1 active entries)
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm02 has 1 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm02 has 2 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info: stonith_level_remove:
> Node vm03 not found (2 active entries)
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm03 has 1 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm03 has 2 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info: stonith_level_remove:
> Node vm04 not found (3 active entries)
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm04 has 1 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm04 has 2 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info: stonith_level_remove:
> Node vm05 not found (4 active entries)
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm05 has 1 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm05 has 2 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info: stonith_level_remove:
> Node vm06 not found (5 active entries)
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm06 has 1 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm06 has 2 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info: stonith_level_remove:
> Node vm07 not found (6 active entries)
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm07 has 1 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm07 has 2 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info: stonith_level_remove:
> Node vm08 not found (7 active entries)
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm08 has 1 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info:
> stonith_level_register: Node vm08 has 2 active fencing levels
> Jun  2 11:34:02 vm04 stonith-ng[4891]:     info: cib_devices_update:
> Updating devices to version 0.4.937
> Jun  2 11:34:02 vm04 stonith-ng[4891]:   notice: unpack_config: On
> loss of CCM Quorum: Ignore
> Jun  2 11:34:02 vm04 stonith-ng[4891]:  warning:
> handle_startup_fencing: Blind faith: not fencing unseen nodes
> Jun  2 11:34:02 vm04 stonith-ng[4891]:  warning:
> handle_startup_fencing: Blind faith: not fencing unseen nodes
> Jun  2 11:34:02 vm04 stonith-ng[4891]:  warning:
> handle_startup_fencing: Blind faith: not fencing unseen nodes
> Jun  2 11:34:02 vm04 stonith-ng[4891]:  warning:
> handle_startup_fencing: Blind faith: not fencing unseen nodes
> Jun  2 11:34:02 vm04 stonith-ng[4891]:  warning:
> handle_startup_fencing: Blind faith: not fencing unseen nodes
> Jun  2 11:34:02 vm04 stonith-ng[4891]:  warning:
> handle_startup_fencing: Blind faith: not fencing unseen nodes
> Jun  2 11:34:02 vm04 stonith-ng[4891]:  warning:
> handle_startup_fencing: Blind faith: not fencing unseen nodes
> Jun  2 11:34:02 vm04 stonith-ng[4891]:  warning:
> handle_startup_fencing: Blind faith: not fencing unseen nodes
> Jun  2 11:34:03 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_helper01' to the device
> list (1 active devices)
> Jun  2 11:34:04 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_libvirt01' to the device
> list (2 active devices)
> Jun  2 11:34:05 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_helper02' to the device
> list (3 active devices)
> Jun  2 11:34:06 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_libvirt02' to the device
> list (4 active devices)
> Jun  2 11:34:07 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_helper03' to the device
> list (5 active devices)
> Jun  2 11:34:08 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_libvirt03' to the device
> list (6 active devices)
> Jun  2 11:34:08 vm04 stonith-ng[4891]:     info: cib_device_update:
> Device prmStonith_helper04 has been disabled on vm04: score=-INFINITY
> Jun  2 11:34:08 vm04 stonith-ng[4891]:     info: cib_device_update:
> Device prmStonith_libvirt04 has been disabled on vm04: score=-INFINITY
> Jun  2 11:34:09 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_helper05' to the device
> list (7 active devices)
> Jun  2 11:34:10 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_libvirt05' to the device
> list (8 active devices)
> Jun  2 11:34:11 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_helper06' to the device
> list (9 active devices)
> Jun  2 11:34:12 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_libvirt06' to the device
> list (10 active devices)
> Jun  2 11:34:13 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_helper07' to the device
> list (11 active devices)
> Jun  2 11:34:14 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_libvirt07' to the device
> list (12 active devices)
> Jun  2 11:34:15 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_helper08' to the device
> list (13 active devices)
> Jun  2 11:34:16 vm04 stonith-ng[4891]:   notice:
> stonith_device_register: Added 'prmStonith_libvirt08' to the device
> list (14 active devices)
> 
> Regards,
> Yusuke
> 
> 2014-06-02 20:31 GMT+09:00 Andrew Beekhof <andrew at beekhof.net>:
>> 
>> On 2 Jun 2014, at 3:05 pm, Yusuke Iida <yusk.iida at gmail.com> wrote:
>> 
>>> Hi, Andrew
>>> 
>>> I use the newest of 1.1 brunches and am testing by eight sets of nodes.
>>> 
>>> Although the problem was settled once,
>>> Now, the problem with which queue overflows between cib and stonithd
>>> has recurred.
>>> 
>>> As an example, I paste the log of the DC node.
>>> The problem is occurring on all nodes.
>>> 
>>> Jun  2 11:34:02 vm04 cib[3940]:    error: crm_ipcs_flush_events:
>>> Evicting slow client 0x250afe0[3941]: event queue reached 638 entries
>>> Jun  2 11:34:02 vm04 stonith-ng[3941]:    error: crm_ipc_read:
>>> Connection to cib_rw failed
>>> Jun  2 11:34:02 vm04 stonith-ng[3941]:    error:
>>> mainloop_gio_callback: Connection to cib_rw[0x662510] closed (I/O
>>> condition=17)
>>> Jun  2 11:34:02 vm04 stonith-ng[3941]:   notice:
>>> cib_connection_destroy: Connection to the CIB terminated. Shutting
>>> down.
>>> Jun  2 11:34:02 vm04 stonith-ng[3941]:     info: stonith_shutdown:
>>> Terminating with  2 clients
>>> Jun  2 11:34:02 vm04 stonith-ng[3941]:     info: qb_ipcs_us_withdraw:
>>> withdrawing server sockets
>>> 
>>> After loading a resource setup, time for stonithd to build device
>>> information is long.
>>> It has taken the time for about about 15 seconds.
>> 
>> 15 seconds!! Yikes. I'll investigate tomorrow.
>> 
>>> It seems that the diff message of cib accumulates between them.
>>> 
>>> Are there any plans to improve on this issue?
>>> 
>>> I attach a report when a problem occurs.
>>> https://drive.google.com/file/d/0BwMFJItoO-fVUEFEN1NlelNWRjg/edit?usp=sharing
>>> 
>>> Regards,
>>> Yusuke
>>> --
>>> ----------------------------------------
>>> METRO SYSTEMS CO., LTD
>>> 
>>> Yusuke Iida
>>> Mail: yusk.iida at gmail.com
>>> ----------------------------------------
>>> 
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>>> 
>>> Project Home: http://www.clusterlabs.org
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>>> Bugs: http://bugs.clusterlabs.org
>> 
>> 
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>> 
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>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>> Bugs: http://bugs.clusterlabs.org
>> 
> 
> 
> 
> -- 
> ----------------------------------------
> METRO SYSTEMS CO., LTD
> 
> Yusuke Iida
> Mail: yusk.iida at gmail.com
> ----------------------------------------
> 
> _______________________________________________
> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
> 
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://bugs.clusterlabs.org

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