I have VirtualBox up and running fine with a 32-bit XP image, but when I
tried to configure a 64-bit linux machine VirtualBox barfs when you try
to start it with:
Failed to open a session for the virtual machine linux_test.
AMD-V is being used by another hypervisor. (VERR_SVM_IN_USE).
VirtualBox can't enable the AMD-V extension. Please disable the KVM
kernel extension, recompile your kernel and reboot (VERR_SVM_IN_USE).
Searching for this found a match, but their solution of
rmmod kvm_amd kvm
I had already tried with modprobe -r and it doesn't fix it anyway.
I've tried with both 3.10.11 and 3.11.2 from fedora.
I am unable to see any kvm that is already running, and - more to the
point - what causes kvm_amd to be loaded in the first place, since rmmod
happily unloads what must be an unused module.
Playing around a bit, VirtualBox says that it turns on the AMD-V option
automatically if a 64-bit VM is selected.
Btw, the .vdi was converted from the raw - a bootable usb stick with a
full blown fedora OS on it. I can't see that having any relevance as
the error comes up before any boot process has happened.
Suggestions please - I can do a kernel recompile, but what I have to
disable isn't clear.
Hi all
I'm visiting a client in Melbourne (just south of the CBD, near St Kilda
Rd), and they are currently looking for 8 (yes) more PHP developers.
They're a nice bunch of people, decent fraction of female developers also.
Other tech used... MariaDB (MySQL), memcached, Gearman, ... the usual
kind of stuff you'd expect in the realm of scalable web and mobile.
Drop me a line if you're interested, and I'll introduce you.
Regards,
Arjen.
--
Exec.Director @ Open Query (http://openquery.com) MariaDB/MySQL services
Sane business strategy explorations at http://upstarta.com.au
Personal blog at http://lentz.com.au/blog/
What chat program should I be using these days to ensure maximum cross-compatibility? I suspect there isn't an answer.
It used to be that I would use a jabber based chat client and I could talk to google (xmpp), msn (via a bridge), and anyone else running XMPP based services. Then MSN went to something incompatible and stupid (Skype?), and now google have gone to hangouts which is not XMPP, and I'm left with connectivity to the remaining few people still using the old google chat client.
Frustrated.
James
From: "Toby Corkindale" <toby(a)dryft.net>
>> On 30/09/13 17:51, Peter Nunn wrote:
>> From his perspective, it?s about redundancy. He can throw out one lot
>> of IT people, replace them with another lot, and they will still be able
>> to support the system.
>>
>> He can?t find a Linux shop just by walking up the street or finding the
>> first IT company in the Yellow Pages.
>
> Also worth noting that with Linux, you tend to get a huge variance in
> the way things are set up, depending on the sysadmins who created it.
> If you bring in a new Linux shop, they may well take quite a while to
> figure out how everything works, and then want to change it.
I do not think that is true.
Of course, you have few flavours but it boils down (for most) to Red
Hat vs. Debian based distributions.
It is probably even more consistent over years - compared to the move
from Windows XP to Vista to Windows 7 to Windows 8.
Installs, setups and upgrades will be look very similar whoever it is
doing it, as long they do not try to be deliberately "exotic".
Customisation will need some understanding - but the same challenge
will be there for every Windows admin too.
I moved between jobs and never found that too hard to understand
setups done by others.
The bigger challenge was dealing with "messy setups" (means no
policies at all - so I do it differently on every second machine).
(Maybe that just offends the German in me;-)
Well, that happens under Windows as well, and it is actually needs
more effort to have computers that look the same.
Regards
Peter
Hi Guys,
At the risk of starting a thread that runs for months, how do you overcome microsoft FUB in the education sector.
I've just quoted a couple of machines for a local, not for profit, school up my way that were intended to run KVM and file services with Winblows servers on top of them "because they have to have windows").
The Buresr, whom I do have some sympathy for, given the amount of crap he's been told, has made the decision that Linux is 'too risky', after consulting other bursers on some network of bursers (god knows) and being advised that "Linux is no good in an education environment, can't get staff, no-one uses it except a few 'out there risk takers'". Of course the M$ suppliers are pushing the same line.
How the hell do you combat this bull shit?
I have to say I'm amazed that a school with so little money is happy to throw it away to M$ (despite the heavy discounts they get for the licenses).
Peter.
I want to create a filesystem to store my on-disk backups (from Bacula) on a new server. These backup files will be few (less than 10000) and mostly huge (>1GB). Because I will have multiple files being written out at once, a large data per inode ratio seems to make sense as it will greatly reduce fragmentation, and wasted space would be low because of the small number of files. Also because the write pattern is exclusively streaming writes, I can go against my normal rule and use RAID5.
I've chosen a 4MB of data per inode ratio based on some rough calculations, but while my mkfs.ext3 <dev> -i 4194304 just raced through initially, when it got to "Writing superblocks and filesystem accounting information:" it just seemed to hang. Strace says it's doing seek, write 4k, seek, write 4k, over and over again. I hit ^C and the process is now [mkfs.ext3], but the system is still pegged at 100% disk utilisation.
Any suggestions as to how I could make this go faster? The filesystem is around 8TB (RAID5 of 4 x 3TB disks), so it's not exactly small, and the disks are only 7200RPM SATA, but I know xfs would complete pretty quick. I'd use xfs but over the years I've used xfs and ext3 in roughly equal proportions, and I've lost 3 xfs filesystems and no ext3 filesystems, so I'm a little reluctant to commit to it.
Thanks
James
From: "Peter Nunn" <pnunn(a)infoteq.com.au>
> At the risk of starting a thread that runs for months, how do you
> overcome microsoft FUB in the education sector.
I only see one way to establish open education in a school.
You have staff that believes in values, as creativity, curiosity and
privacy. Staff motivated to put some effort in it. Then you can back
them by providing support.
Economical values, usability etc. shouldn't be at the heart of the
discussion. They follow if the motivation is there.
I give you an example why I believe the staff and their motivation is
most important.
My daughter has Apple instead of Windows. Caged farming compared to
Windows. At least you can easily transfer data from/to a Windows
system. Some of the iPad apps suck soo much that I would throw them
out after an hour.
It also prepares the next generation to send their data feed directly
to the spies. Who would save or exchange data via USB stick? Apple
makes it so much easier. Just use iTunes. Or Windows Live. Or Google..
whatever the product and the cloud of the day is.
At Albert Park College the iPads are integrated part of all classes,
every student has to buy one, and for students class 8 and above Mac
computers are mandatory too.
The staff seems to be enthusiastic to have modern devices to work with
and a bunch of apps they consider useful and hip.
There are free alternatives but I guess there is no way to counter
that. Apple is seen as cool and it fits into the image of a "modern
school". Well, we are living in the age where the image of a school is
more important than education itself. Because we have a school market,
parents shop around. We do not have schools simply to educate kids. I
had endless hours, week by week, month by month, parents talking about
"the best college for my child". It simply sucks.
$1500 per student, 150 students per year, 7 years at the school makes
it ca. 1.5 million dollars private spending on devices. Plus the IT
budget in the school..
I use open source, my kids are familiar with it and they used some at home.
But they do not stand a chance against a whole society brainwashed to
believe in brands.
Imagine another approach: Some Linux computers for teachers at the
school, and the school starts with kids building their computer from a
Raspberry Pi, and then install Linux on it, learn how to understand a
computer works, how to make a case etc.
The teachers in the class room can add Scratch, Audacity, GIMP etc.
That's not too hard but needs some motivation.
I made a garden bench last weekend. It does not matter too much
whether it is a fancy one. The kids were enthusiastic, sawing and
filing and drilling and screwing - and the finished furniture is the
most loved item afterwards.
Regards
Peter
From: "Trent W. Buck" <trentbuck(a)gmail.com>
> Petros <Petros.Listig(a)fdrive.com.au> writes:
>
>>> Also worth noting that with Linux, you tend to get a huge variance in
>>> the way things are set up, depending on the sysadmins who created it.
>>> If you bring in a new Linux shop, they may well take quite a while to
>>> figure out how everything works, and then want to change it.
>>
>> I do not think that is true.
>
> I'm a sysadmin. I routinely inherit systems. It's definitely true.
>
> Simple things are usually consistent, but Toby's right that it can take
> a while (weeks/months) to understand all the... quirks and pecadillos of
> the previous maintainer. I tend to dismiss that as incompetence, but it
> could be style differences.
>
>> It is probably even more consistent over years - compared to the move
>> from Windows XP to Vista to Windows 7 to Windows 8.
>
> I can't comment on Windows systems administration.
I was referring to it in a Linux vs. Windows context.
I am "a bit" involved in the Windows administration too although I
have a colleague who is doing a lot of the ground work.
You will find similar quirks in the Windows world too, whether it is a
domain setup, naming conventions, directory structures, shares,
version control setup, monitoring, remote control, firewall solution
etc - that all has to be added and configured on a "pristine" Windows
box before you have a working system.
And then you have the next version and "C:\Document and Settings"
becomes "C:\Users". /home is there since I use Unix. You have to tweak
the registry to use a file server home under Windows.
Our company setup requires a particular samba share mounted as W: and
some of the W: directories added to the path, Firefox under C:/Program
Files (not the default C:/Program Files(x86), you have to create a
fake D: drive to make a particular program happy..
not to know that will give you a bunch of surprises.
Documentation helps (fortunately we have that, a long Wiki page
describing how to install and configure Windows machines) - but that
is universally true.
At my kids' primary school the teachers started to use USB sticks to
exchange data - because nobody was able to fix issues with their
Windows file server, for months.
They had some external Windows admins to maintain the network.
Maybe that is a bright spot if you have a Linux admin: Most of them
know what they are doing;-)
Regards
Peter
From: "Craig Sanders" <cas(a)taz.net.au>
> On Tue, Oct 01, 2013 at 12:25:37PM +1000, Trent W. Buck wrote:
> Oracle as the copyright holder on the Sun-developed ZFS could solve the
> license problem by re-licensing it as GPL or BSD (preferably BSD so that
> FreeBSD and Illumos etc could use it too) but that's extremely unlikely
> to happen.
It is part of the "standard FreeBSD kernel". I am not an expert in
licenses but it looks as the current ZFS license (CDDL, AFAIK) is not
an issue in the BSD world.
BTW: There is OpenZFS now:(http://www.open-zfs.org/wiki/Main_Page)
"OpenZFS was announced in September 2013 as the truly open source
successor to the ZFS project. Our community brings together developers
from the illumos, FreeBSD, Linux, and OS X platforms, and a wide range
of companies that build products on top of OpenZFS."
Nobody knows what Oracle is doing with ZFS (especially if it comes to
open source).
But they both can easily co-exist, similar as the various UFS
filesystems. They all developed in various ways. E.g. Sun added
filesystem journaling to it, something that wasn't happening under
FreeBSD for a while. There were soft updates and volume journaling
instead. Other projects and companies added other stuff to it. And
there is some "cross-pollination" between the various projects.
Regards
Peter
Hi All,
I have this crazy problem and I hope it is possible.
Part in my script:
svnadmin dump -r1:100 --incremental /srv/my_repo > /srv/my_repo.1-100.dump
Output:
* Dumped revision 1.
* Dumped revision 2.
* Dumped revision 3.
* Dumped revision 4.
* Dumped revision 5.
* Dumped revision 6.
* Dumped revision 7.
* Dumped revision 8.
* Dumped revision 9.
* Dumped revision 10.
Now I want to store the output (standard out/error) to a log file for
future reference using this:
svnadmin dump -r1:100 --incremental /srv/my_repo > /srv/my_repo.1-100.dump
| tee /srv/my_repo.1-100.log
But seems not to work. Is this doable with bash or python?
TIA,
Jay
