This time i really thought i had it.

But hopefully i have finally fixed it this afternoon.
Today right as people were leaving, this error happened again.
After i had increased the dom0 memory allocation. Only this time it didnt last 7 minutes, it lasted over 20. Probably due to the increased memory available for dom0 as that was the only change i made recently.
SMlog full of SR_BACKEND_FAILUREs, timeouts all that bad stuff previously mentioned.
So then when it all started working again i look at smlog as it should normally be in my environment.
Every 30 seconds there is some message:

'''
XS001 SM: [16965] sr_scan {'sr_uuid': 'cc37b853-066e-fbcb-f5c2-dcca47fd168b', 'subtask_of': 'DummyRef:|737fa116-27fc-0ad6-c923-335d7d645e68|SR.scan', 'args': [], 'host_ref': 'OpaqueRef:ff71ac2a-851d-36dc-43e4-6ea0708498e9', 'session_ref': 'OpaqueRef:7433c31d-3a94-75fa-316b-c0549ce51389', 'device_config': {'username': 'admin', 'type': 'cifs', 'SRmaster': 'true', 'cifspassword_secret': pw hash removed', 'location': '//10.1.0.10/iso'}, 'command': 'sr_scan', 'sr_ref': 'OpaqueRef:77fe45fb-7f66-b2d0-1aac-72e990bfa378'}
'''

I go back, looking at all the archived SMlog.x.gz logs.

This message has been happening for at least 7 months, every 30 seconds without fail. In fact, i thought it was a normal SMlog message because it has been happening at least since my first day on the job. It is also always the same SR uuid # that shows up; which was the CIFS ISO share SR for Xen that was made right after installation back in 2013(not by me). I would guess these type of errors have been happening since 2013, like clockwork almost.

About ready to throw my fist through something at this point, and users are unhappy.

I decided to unplug and forget this SR, and recreate it as NFS ISO share in XS rather than CIFS/SMB
Have done that now, all i can do is wait a few days to see if storage errors occur again. I can say however, those SMlog messages dont show up every 30 seconds anymore.
In fact the only messages showing up are Unitrends snapshotting and attaching itself to vdis for backups right now, so at least it is 'back to normal' for now. Though normal is $#@!ed apparently.

It also sheds light as to why previous guy would have reduced memory allocation to dom0, as this seems to reduce the time of these timeouts, while adding more increases the time of them(allegedly, i will know by Monday). If this is the actual fix, it means i will have solved a multiyear problem that 3 other people in my position were unable to solve. I really hope this is it.

And, does anybody actually know what that 'error' message in SMlog means? It doesnt have the word error, doesnt say anything bad, just lists some uuids.

Hopefully this horse is way past dead, and I can go clean my shillelagh.

How apropos, the ad on the top is for .... Staples.

0_1470959231001_Screenshot from 2016-08-11 19-46-46.png

Remmina is a great tool. I've had excellent luck with it.

Ya know, I'm not sure I'm unhappy about this leak.

Now maybe I'll be able to run DBAN on any Windows 10 device I want.

That's not super easy unless the script is holding the file open currently or the script is altering the file as a user that is only used by that script. There isn't a residual "this is the script that created the process that altered this file" metadata anywhere. You have to connect the file to the process that changed it to the script that made that process. That's a bit.

The easiest thing to do, I'm sure, is to approach this from the application side and find out what it uses to do these tasks and handle it that way.

I've never used a visual editor with MediaWiki. But getting MW itself working was not a problem.

I know I could use WebRoot for my personal computers, but this was for someone else. They had McAfee which was expired. I prefer free over paid, though I know there is a bit of a compromise.

Its for excluding 3 users from a removable device policy. I blocked inheritance on the OU at the domain level which contains the users. I highlight the GPO which contains the policies. Select Delegation. Add the group that contains the 3 users. Select Advanced. Highlight the group. Allow Read. Deny apply group policy. Gpupdate /force on the laptop where the user is logged in. Not working. I cant format the USB drive. I cant delete stuff from the drive.

The article mentions using CentOS, I believe. I'm not able to find the CentOS 7 packages -- they mentioned using the epel-releases, but my system doesn't seem to see it. Any ideas where to look? I'd really rather not have to resort to building it by hand.

Ubuntu has a PPA for it.

@sn said in How to sync MSSQL with Maria DB:

@scottalanmiller said in How to sync MSSQL with Maria DB:

Did any of these resources end up getting you to where you needed to be? Or are you still looking for more guidance?

We wrote a PHP script and at the moment it is working the way we wanted. Script basically polls the MS SQL database every 10mins and looks for new records and copies to our local MariaDB. It was a great learning curve though 🙂

Thanks everyone for your help and suggestions!

Yup, that's probably about the best way to handle this.

@chrisnbrooks said in Favorite Linux Distro:

... I've been thoroughly enjoying my new Korora notebook, and might finally leave Debian behind forever.

Update: Last night I tried to install Night of the Tentacle on Korora from my Steam library, and realized it only supports Debian file structures. Not wanting to mess around with ScummVM and also realizing many games on Steam only support Debian derivatives, I switched back to Mint. That's not to say there's no place for Korora in my life, but I may reserve it strictly for Workstations. (where selinux and increased r/w speed is an obvious advantage)

Okay, so at this point, httpd is definitely running.

@JaredBusch said in I'm under attack I need help in ssh:

@inroute said in I'm under attack I need help in ssh:

@tiagom ummmm....

@tiagom is exactly right. You have a Panasonic device on your network, it should be behind your router/firewall, so just turn off port 22 at your router/firewall.

Better yet, do that, and change the port of sshd all together to something much higher. Yes, it's sort of "security through obscurity," but it will avoid constant bot attacks and so forth, but anyone directly wanting to attack the machine can easily find the information if it's open to the public Internet.

@JaredBusch said in Help with Helpy:

@IRJ said in Help with Helpy:

Here is the finished tutorial.

http://joelradon.com/installing-helpy-open-source-help-desk-on-centos-6/

Then you show adding the rails user to the sudo file with vi after adding nano.

Also, once you add a user to the wheel group, you should not need to add to the sudo file, isn't that the point of the wheel group?

you are supposed to use visudo to edit that sudoers file.

As far as installing nano twice, I may have missed that and copied it from the original.

I am not sure what the big deal is...

@scottalanmiller Solution: back to Polaroids!

@scottalanmiller said in RingCentral Spamming My Users:

@Brains said in RingCentral Spamming My Users:

@Reid-Cooper said in RingCentral Spamming My Users:

That sounds like someone acting like RingCentral to me. Seems very fishy for it to be RC themselves.

Very fishy, but they have confirmed it is a vendor they contract out to and will be ensuring the SPAM is stopped

Maybe a lot of their problems are third party vendors doing things in their name.

Then they must be a deity of some sort...

@DustinB3403 said in Xenserver 7 UPS monitoring:

Obviously HA functionality which would start the VM's has to be disabled as well.

Otherwise you'll end up in a loop with the system trying to power off the VM's until your UPS loses power.

That would be bad, mmmmm'k.