On 12/04/2013, at 11:35 PM, Brian J. Murrell br...@interlinx.bc.ca wrote:
On 13-04-10 07:02 PM, Andrew Beekhof wrote:
On 11/04/2013, at 6:33 AM, Brian J. Murrell
brian-squohqy54cvwr29bmmi...@public.gmane.org wrote:
Does crm_resource suffer from this problem
no
Excellent.
I was
On 13-04-11 06:00 PM, Andrew Beekhof wrote:
Actually, I think the semantics of -C are first-write-wins and any subsequent
attempts fail with -EEXSIST
Indeed, you are correct. I think my point though was that it didn't
matter in my case which writer wins since they should all be trying to
On 13-04-10 07:02 PM, Andrew Beekhof wrote:
On 11/04/2013, at 6:33 AM, Brian J. Murrell
brian-squohqy54cvwr29bmmi...@public.gmane.org wrote:
Does crm_resource suffer from this problem
no
Excellent.
I was unable to find any comprehensive documentation on just how to
implement a
On 13-04-10 04:33 PM, Brian J. Murrell wrote:
Does crm_resource suffer from this problem or does it properly only send
exactly the update to the CIB for the operation it's trying to achieve?
In exploring all options, how about pcs? Does pcs' resource create
... for example have the same
On 13-04-11 07:37 AM, Brian J. Murrell wrote:
In exploring all options, how about pcs? Does pcs' resource create
... for example have the same read+modify+replace problem as crm
configure or does pcs resource create also only send proper fragments to
update just the part of the CIB it's
On Thu, Apr 11, 2013 at 2:04 PM, Brian J. Murrell br...@interlinx.bc.ca wrote:
On 13-04-11 07:37 AM, Brian J. Murrell wrote:
In exploring all options, how about pcs? Does pcs' resource create
... for example have the same read+modify+replace problem as crm
configure or does pcs resource
On 11/04/2013, at 10:04 PM, Brian J. Murrell br...@interlinx.bc.ca wrote:
On 13-04-11 07:37 AM, Brian J. Murrell wrote:
In exploring all options, how about pcs? Does pcs' resource create
... for example have the same read+modify+replace problem as crm
configure or does pcs resource create
On 11/04/2013, at 10:46 PM, Rasto Levrinc rasto.levr...@gmail.com wrote:
On Thu, Apr 11, 2013 at 2:04 PM, Brian J. Murrell br...@interlinx.bc.ca
wrote:
On 13-04-11 07:37 AM, Brian J. Murrell wrote:
In exploring all options, how about pcs? Does pcs' resource create
... for example have
On 13-02-21 07:48 PM, Andrew Beekhof wrote:
On Fri, Feb 22, 2013 at 5:18 AM, Brian J. Murrell
brian-squohqy54cvwr29bmmi...@public.gmane.org wrote:
I wonder what happens in the case of two racing crm commands that want
to update the CIB (with non-overlapping/conflicting data). Is there any
On 2013-04-10T16:33:48, Brian J. Murrell br...@interlinx.bc.ca wrote:
crmsh uses a read+modify+replace cycle, if B reads after A has read
but before the replace has happened, data will be lost.
Does crm_resource suffer from this problem or does it properly only send
exactly the update to
On 11/04/2013, at 6:33 AM, Brian J. Murrell br...@interlinx.bc.ca wrote:
On 13-02-21 07:48 PM, Andrew Beekhof wrote:
On Fri, Feb 22, 2013 at 5:18 AM, Brian J. Murrell
brian-squohqy54cvwr29bmmi...@public.gmane.org wrote:
I wonder what happens in the case of two racing crm commands that want
On Wed, Mar 20, 2013 at 10:40:10AM -0700, Bob Haxo wrote:
Regarding the replace triggering a DC election ... which is causing
issues with scripted installs ... how do I determine which crm commands
will NOT trigger this election?
It seems like every configure commit could possible result in
Regarding the replace triggering a DC election ... which is causing
issues with scripted installs ... how do I determine which crm commands
will NOT trigger this election? I need a way of avoiding this election
while installing.
I'm finding that when repeating the scripted install with the same
On Thu, Feb 28, 2013 at 07:34:41PM +0100, Lars Marowsky-Bree wrote:
On 2013-02-28T17:51:03, Dejan Muhamedagic deja...@fastmail.fm wrote:
crmsh used to make modifications in chunks, which was a bit
complex due to element dependencies, but it worked if I can
recall correctly. Then it got
On 2013-03-04T17:14:28, Dejan Muhamedagic deja...@fastmail.fm wrote:
Thought so at the time, yes. And I do think it cleaned up a few things,
we just need to improve it. The full CIB replace also seems to trigger
an election ...
I think that used to happen in Heartbeat clusters but got
On Thu, Feb 28, 2013 at 11:03:02AM +0100, Lars Marowsky-Bree wrote:
On 2013-02-25T12:20:13, Brian J. Murrell br...@interlinx.bc.ca wrote:
Perhaps there's a way to improve this.
Well, the CIB is shared resource. Shared resources need to be locked
against these sort of racy updates.
On 2013-02-28T17:51:03, Dejan Muhamedagic deja...@fastmail.fm wrote:
crmsh used to make modifications in chunks, which was a bit
complex due to element dependencies, but it worked if I can
recall correctly. Then it got replaced by a full CIB replace
(everybody claimed that it was the right
On Mon, Feb 25, 2013 at 12:20:13PM -0500, Brian J. Murrell wrote:
On 13-02-25 10:30 AM, Dejan Muhamedagic wrote:
Before doing replace, crmsh queries the CIB and checks if the
epoch was modified in the meantime.
But doesn't take out a lock of any sort to prevent an update in the
On Fri, Feb 22, 2013 at 11:48:58AM +1100, Andrew Beekhof wrote:
On Fri, Feb 22, 2013 at 5:18 AM, Brian J. Murrell br...@interlinx.bc.ca
wrote:
I wonder what happens in the case of two racing crm commands that want
to update the CIB (with non-overlapping/conflicting data). Is there any
On 13-02-25 10:30 AM, Dejan Muhamedagic wrote:
Before doing replace, crmsh queries the CIB and checks if the
epoch was modified in the meantime.
But doesn't take out a lock of any sort to prevent an update in the
meanwhile, right?
Those operations are not
atomic, though.
Indeed.
Perhaps
I wonder what happens in the case of two racing crm commands that want
to update the CIB (with non-overlapping/conflicting data). Is there any
locking to ensure that one crm cannot overwrite the other's change?
(i.e. second one to get there has to read in the new CIB before being
able to apply
On Fri, Feb 22, 2013 at 5:18 AM, Brian J. Murrell br...@interlinx.bc.ca wrote:
I wonder what happens in the case of two racing crm commands that want
to update the CIB (with non-overlapping/conflicting data). Is there any
locking to ensure that one crm cannot overwrite the other's change?
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