OCFS2 Manager low priority access

Hello,
I'm currently working to use a SAN with lot of I/O access.
I'm using a solution with ISCSI, multipath and OCFS2.
My cluster OCFS2 contains 4 Nodes, all with the same configuration using Debian Squeeze and ocfs2 v 1.4.4-3.
When I writing on the same file with all the nodes, I can see that only 3 nodes are writing with a regular interval.
The node using the slot 0 (OCFS2 Manager) doesn't write or write really slowly.
When there is only two active node in the cluster, the Manager node works well.
Does someone already have this problem ?
Something seems you wrong ?
Sincerly.

Please do refer to: OCFS2 and SAN Interactions [ID 603038.1]
There is some mention of your issue at this metalink note.
Regards,
Johan Louwers.

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XP Home Firefox 31.0 faster with lower priority

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I'd guess something Firefox does when waiting, say a spin loop, is displacing what it's waiting for unless it runs at the lower priority.
Solution in that case, it shouldn't be doing whatever it's doing when waiting.
I think this has been a problem since 27.0. 26.0 had no such problem.
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Operations Manager Failed to Access the Windows Event Log and management server is showing warning state

Hi,
I am monitoring AD server from SCOM 2012 R2. My management server goes into waning state. When i run Health explorer then it come back in the healthy state but after some time it again goes into warning state. After seeing alert i found that a alert is coming
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Hi Abhishek,
As i mentioned earlier the Alert resolution says the same points.
Can you give details on the below ?
Is there really a log named "Dhcpadminevents" in the MS's Event viewer ?
Did you recently configure any new alert where you mentioned "Dhcpadminevents"
as a event log location ?
If yes then what is the target you selected for the rule / monitor there ?
Can you post the results for analysis ?
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ESYU: R12 - Order Management를 위한 Multi Org Access Control(MOAC) setup 방법

Purpose
Oracle Order Management - Version: 12.0 to 12.0
Information in this document applies to any platform.
R12의 Order Management에 대핸 Multi Org Access Control(MOAC) setup 방법에 대해 알아본다.
Solution
일반적인 MOAC Setup:
1. HRMS에서 Security Profile을 정의:
a. HRMS Management responsibility 선택
b. HRMS Manager> Security> Profile로 이동
c. Security Profile이 정의되어 있는지 확인 (OM responsibility 혹은 Site level로)
d. 만일 아직 setup 되어져 있지 않다면 Operating Units를 입력
e. 저장
Note: 만일 위 d step과 같이 새로운 security profile을 생성하였다면 concurrent program 'Security List Maintenance'를 꼭 실행해야 한다.
그렇지 않으면 multiple operating units가 OM forms의 LOV에 나타나지 않을 것이다.
이 program은 multi-org access를 validating 하기 위해 사용하는 table에 data를 생성한다.
Navigation: HRMS Management> HRMS Manager> Processes & Reports> Submit Process & Report> Security List Maintenance
2. MO Profile Options setup:
a. MO: Security Profile - 이 profile setting은 MOAC functionality를 활성화 한다.
b. MO: Default Operating Unit - 이 Operating Unit는 OM forms과 report에서 default가 될 것이며, 이를 clear 하거나 변경하기 위해 LOV를 사용할 수 있다.
Keep the MO profiles in sync:
MO: Security Profile은 site와 responsibility level로 setting 할 수 있다.
MO: Default Operating Unit은 site, responsibility, user level로 setting 할 수 있다.
Application이 원하는대로 동작되지 않는것을 발견하면 이 profile options의 setting 값을 확인한다.
3. OM setup:
R12 upgrade 시 OM Profile에서 migrate 된 새로운 OM System Parameters를 확인:
Order Management Super User> Setup> System Parameters> Values
(See <<NOTE 393646.1>>-R12 Readiness Cheat Sheet: Migrated OM Profile Options)
4. Form에서 hidden field 'Operatin Unit'를 활성화시키고 default folder로 저장:
Sales Order and Order Organizer forms
Quick Sales order and Organizer forms
Sales Agreement forms
Pricing and Availability form
Other forms
Note: Sales Order form에서 hidden field 'Operating Unit'를 'Show' 하기 전에 fotm안에 이 field를 위한 공간을 만들어 놓아야 한다.
예를 들면 Customer Number field를 짧게 하거나 Operating Unit field로 이 field를 덮어씌울수 있다.
Reference
Note 393634.1

Hi Larry,
Have you considered adding the exec apps.mo_global.set_policy_context call to your connection's start-up script?
Tools -> Preferences -> Database -> Filename for connection startup scriptNot the most flexible approach, so I'm not sure if it is appropriate for your application, but just a thought. You might create distinct connection names with different start-up scripts for each org_id.
Regards,
Gary
SQL Developer Team

Distribution Manager Failed To Access The Source Directory

Hello All,
I have this issue distributing content to my Distribution Points for months now. I keep running into this error below:
Distribution Manager Failed to Access the source directory (\\share\folder\file.wim)
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Solution: Verify that the site server computer account has at least Read access to the directory you specify as the source directory.
Possible Cause: There is not enough disk space available on the site server.
Solution: Verify that there is enough free disk space available on the site server.
I checked the distmgr.log file and received these messages:
GetTempFileNameA failed; 0x80004005   SMS_DISTRIBUTION_MANAGER   3/24/2015 2:15:38 PM   13952 (0x3680)
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There is enough space on the site server and the site server has full control over the source directory. I wish I can give you more information but I'm hoping this is enough info to get some assistance. If more information is needed please let me know!

We usually give the DP's computer account and the site server computer account read access to these shares in our environment.
... which is not enough for drivers and updates (as there will also files be added).
Torsten Meringer | http://www.mssccmfaq.de
... And for capture Image too if your capture destination points on that share

Using the Security Manager to restrict access to a single package

After reading up on the Security Manager, the package.access property and the use of the [accessClassInPackage RuntimePermission|http://java.sun.com/javase/6/docs/technotes/guides/security/permissions.html#RuntimePermission] , it seemed to me that it would possible to set up the following: I have a security-sensitive code base packaged in a jar, and I want to make sure that only one client code base that I specify is permitted to access it. The idea here is to prevent malicious code from executing anything in the sensitive code base; the sensitive code is only accessible to one client that I name in a security policy file. Perhaps rather foolishly, I advised a client to consider this before testing out a sample myself, because much to my surprise, it appears to me that it isn't possible to get the Security Manager to do this at all. Am I missing something? I'm a bit startled by this conclusion -- it seems like such an obvious use for the Security Manager, I'm hard-pressed to be believe that it can't be done, and more inclined to suspect that I'm going about it wrong.
Here's what I thought I could do: set up the package.access property so that it denies access to any package; then in the policy file, grant the RuntimePermission/accessClassInPackage to the client code base that is permitted to access the sensitive code.
Of course, you wouldn't want the package.access property to exclude all packages in the global java.security file, because then no code could be accessed at all. It would be necessary to use the trick of resetting the package.access property within the code, as [illustrated in the secure coding guidelines|http://java.sun.com/security/seccodeguide.html#1-1a] .
But the problem lies in the idea of "use the package.access property to deny access to +any+ package". There doesn't seem to be any way to use wildcards or the like with the property -- it has to specifically name packages (or package prefixes) to which access is forbidden. It wouldn't do to try to name the packages to which I'm trying to prevent access, since we're trying to prevent access from malicious code -- the attacker could just choose package names that aren't on the list. I'd really need to say that access is denied to all packages, except for those in the permitted code base, but the security mechanisms for package access don't seem to allow that.
Moreover, the trick of changing the value of package.access can't be done within the client code -- otherwise, the attacker client would just set the property to his own purposes. But it can't really be done within the sensitive package either, because the whole idea is to prevent access to that package, and by the time it's busy setting the property, it's already too late, because the package has to have been accessed by a client to get there at all.
It seems to me that this a symptom of something I've never really understood about the design of the Security Manager -- you can grant permissions to specific code bases, but you can't revoke permissions from specific code bases, let alone all code bases. What I want to do here is grant access permission to one specific code base and revoke it from all others. There doesn't seem to be any way to express that with the mechanisms of the Security Manager.
The more I look at it, the more it seems that there's just no way to use the Security Manager this way -- set up package access so that a specific code base can only be accessed by one specific client code base. There are surely other ways to get the effect that I'm looking for, but as far as I can tell, none of them involve restricting package access (for example: define a custom permission, grant it only to the permitted client. and check against that permission within the sensitive code base; meaning that the sensitive code has to be accessible to anyone in the first place). This conclusion really surprises me (not to mention my bit of embarrassment with the client); wouldn't this be precisely the sort of thing the Security Manager ought to be good for?

You're looking at this back to front. The security policy file is there for the client to decide how much access he is going to give this application, not for to application to restrict who can use it. If you want to control what used to be called 'state orientation' you can do that directly by looking down the stack trace inside your code.

RTSJ thread priorities, Lower priority thread running

Hi,
I'm experimenting with a thread pool that I've written containing javax.realtime.RealtimeThreads. I'm trying to use this to replace a java.util.concurrent.Exectutor type thread pool in an existing application. My design involves a Queue where the RealtimeThreads wait on until a Task is submitted for execution. All the threads in the pool start at the lowest priority and upon the submission of a task, I have written some logic to increase the priorities of the threads that I want run.
At a given time, there could be many threads with tasks assigned to them and some without tasks. My algorithm to decide which thread is to be given the CPU, runs every time a task is submitted to the system as well as at the end of the current thread execution. I assumed that If I set a thread's priority higher than the others it would automatically be given the CPU and all I have to do is to set the Priority using rtThreadObject.setPriority() method. I obtain the highest priority in the system through PriorityScheduler.instance().getMaxPriority() method and do similarity to obtain the Normal and Lowest priorities in the system.
Recently I added some code to change the priority of a thread from another, and noticed that the target thread's priority is higher than the one that is currently running. I'm not sure how a lower priority thread can run, when a higher priority thread is already in the system. I'm wondering whether it's to do with the current thread of execution getting woken up by a task submission (I do a QueueObject.notify() ) and continue to run at the lower priority, I have my doubts on it. Can anyone give some ideas as to how such an instance could exist?
I'm developing on a Linux-RT kernel with RTSJ 2.1
Thanks,
Vidura

Sorry for the delayed response.
Thanks a lot for the answer. This certainly might be the case in my scenario as well. However, is there a way that I could query the active priority from a Thread and confirm? I also have a few questions just to confirm my thoughts on such a scenario.There is no way to query the active priority of a thread.
1) Can Priority inheritance take place if a high priority thread is blocked on some IO operation say even a simple System.out.println ?Priority inheritance occurs when a thread holding a monitor causes a higher-priority thread to block trying to acquire that monitor. At that point the thread holding the monitor is given the priority of the thread it is blocking. So this can happen anytime a lock is held, regardless of what the thread is doing at the time.
2) In the simple scenario of a couple of threads with different being active at the same time with Java or RTSJ in particular, as long as the threads are not blocked or competing for a shared resource, is it possible to assume that the highest priority thread will get the CPU 100% of the time?The simple answer is "yes" but reality is more complex. Shared resources occur at the application, VM/runtime-library, and OS levels. You would have to avoid them at all levels to ensure the highest base priority thread is also the highest active priority.
3) If we as programmers takes great care in preventing IO operations (or controlling any IO operations, i.e. where to place them in the code) even simple as a System.out, priority inversions or inheritance would not take place?Priority inheritance is not directly related to I/O operations - the issue is whether methods are synchronized or not.
4) In such a scenario highlighted in 3, what practices could be used to debug the code if needed?On Solaris we use DTrace and the Thread Scheduling Visualizer for debugging timing/scheduling relationships. I'm afraid we don't have anything equivalent on Linux at this this time.
As for exactly what I'm trying to do, it's a bit convoluted as I'm trying to achieve predictability in an existing product using RTSJ, that wouldn't be used in the trivial real-time sense, like an embedded environment, rather as a normal application. I will follow up with more details of it if needed.Don't worry, we have numerous users applying real-time Java to "normal" applications. :)
David Holmes

Could low priority transmit B2B credit be configured on MDS 9000 switches?

According to cisco "Slow Drain Device Detection and Congestion Avoidance"
Quote as following
"1 in every 8 credits (with a maximum of 15) is reserved for absolute priority traffic only. All the user and data traffic (which could be high, medium, or low priority) is sent using the remaining shared credits."
Is it just a default or configurable setting? If it is not configurable, how if data traffic congested the link? As data traffic can only use low priority B2B credit, total B2B credit will be remaining non-0 all the time, so Link reset will not occur anyway? How could low priority B2B credit get recovered?
Thanks in advance for any of your help!

Number of credits should depend on the receive frame size. If let's say you double the frame size setting, the receive B2B credit should half.

Low priority and high priority queue

Hi
we have high priority and low priority queue's. Functionality wise i know that time critical messages will be sent through high priority queue's and low priority messages will be sent
through low priority queues. But like to know what technicality makes this separation of
low priority and high priority queue's ? The crus of the question is what technical setting(s)
makes the queue as high priority and what technical setting(s) makes the queue as low priority
queue.
Thanks
kumar

i Michal
I am talking abt queue prioritization on Integration eninge only.
I am good with queue prioritization and am able to successfully implement
the same. We are using only PI7.0.
My question is what is the technical difference between high priority
and low priority queues ? what technical setting makes it a high priority
queue and what technical setting makes a low priority queue ?
Your answer:
how the system reacts to new messages if almost all queues are already blocked
for some types of messages
My comment: what setting makes the system to behave like that ? what property
of that queue makes them to behave like that ?
Thanks
kumar

Central Management Store being accessed is not the active store

We are experiencing issues with our Lync 2013 services after hardening our SQL backend. Even though we have created aliases to the backend database instances and FrontEnd servers is able to access the databases, we are having this error when performing tasks
like enable-csuser or new-clientpolicy from powershell or Lync control panel:
###50023:XdsPublishItems: The central management store being accessed is not the active store. No data can be read or any changes can be made to this store.
Any suggestions or ideas?

Here some guidance that must be followed for Lync Servers
http://blogs.technet.com/b/nexthop/archive/2011/04/12/using-lync-server-2010-with-a-custom-sql-server-network-configuration.aspx
http://technet.microsoft.com/en-us/library/gg195795(v=ocs.14).aspx
Have this been followed ?
Please remember, if you see a post that helped you please click ;Vote As Helpful" and if it answered your question please click "Mark As Answer" Regards Edwin Anthony Joseph

Worklist has no low priority items (only Very High, High and Medium)

This is the default:
Low
0-25%
Medium
26-50%
High
51-75%
Very High
76-100%
However, the worklist has no low priority, only Very High, High and Medium.

Similar situation here. I fitted a BT accelerator a month after the switch to ADSL2+ to get that last little bit of speed and instead it caused repeated dropouts. My IP profile got hammered and SNR set crazily high as a result.
Removed the accelerator and have a rock solid line again. That was 3 weeks ago and my profile is now at 12000 with SNR down to 12db. Hopefully will be back to where I was before the accelerator some time by the end of January.
I am using a Dlink 2460 so could force the SNR down with DMT software but am holding off at the moment as BT's profiling is so aggressive I don't want to give it any excuse to hammer my line again.

Low priority VM and Quick migration

Hi ,
When we pause or set one of hyper-v host on maintenance , the fail-over cluster migrate VMs to another hosts , some VMs migrate using live migrated and the others using Quick migrated
I notice the VMs that are prioritized with low priority using Quick migration
Why not all VMs doesn't use live migration ?
thanks
Ramy

I don't think this is related to priority. My experience has been that VMs that are running are live-migrated, while VMs that are paused or powered down cannot be live-migrated but must be quick migrated. This makes sense if you think about it. Live-migration
migrates a running VM's memory and settings then the storage handle. None of these apply if the VM is down.
Sam Boutros, Senior Consultant, Software Logic, KOP, PA http://superwidgets.wordpress.com (Please take a moment to Vote as Helpful and/or Mark as Answer, where applicable) _________________________________________________________________________________
Powershell: Learn it before it's an emergency http://technet.microsoft.com/en-us/scriptcenter/powershell.aspx http://technet.microsoft.com/en-us/scriptcenter/dd793612.aspx

Yaourt building aur stuff slowly very low priority

hey guys, all the sudden when yaourt builds aur packages its like +15 priority, very slow, the one iom trying to build this moment is firefox-pgo-beta , its executeing the build commands at ridiculously low priority its been building for 3 days and isnt done, this didnt happen before. ive done allot of research and dont want to bother anyone but though this may have come up for someone else before. Thanks guys

Please don't cross post. Creating new threads because you're impatient is no different than bumping your own thread frequently.

Com.apple.mtmd: low priority thinning needed for volume Macintosh HD ??

Why do I have the following in my Console log ? I have 20 GB left on my HD and 250 GB HD Total drive:
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I see the same thing in the Console logs after my MacBook has crashed
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25.11.11 16:39:24,000 kernel: (default pager): [KERNEL]: ps_select_segment - send HI_WAT_ALERT
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27.11.11 11:21:44,108 com.apple.backupd: Backup failed with error: 19
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Difference: Oracle Access Manager and Oracle Access Management

Dear,
What is the difference between Oracle Access Manager and Oracle Access Management, both 11g
thanks

Oracle Access Manager is the foundation(main product), of the new Oracle Access Management platform. Access Manager provides the core functionality of Web Single Sign On(SSO), authentication, authorization, centralized policy administration and agent management, real-time session management and auditing. Built as a 100% Java solution, Access Manager is extremely scalable to handle Internet scale deployments and works with existing heterogeneous environments in the enterprise with agents certified on hundreds of web servers and application servers. Access Manager provides rich functionality, extreme scalability and high availability thereby increasing security, improving user experience and productivity and enhancing compliance while reducing total cost of ownership.
Oracle Access management solution provides: Comprehensive Web Access Management, Web Single Sign-On, Identity Propagation, and Federation;Mobile and Social Sign-On;Real-time External Authorization;daptive Access and Fraud Detection
So basically one is a product and the other one is an entire solution.
I hope this helps,
Thiago Leoncio.

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