Hi,
I hit a problem when attempting to upgrade to kernel 3.17.2 on a
particular server.
Some time between 3.13 and 3.17, the bonding driver has stopped
accepting ppp devices, instead throwing an error that the MAC address
cannot be changed.
(And does not allow this to be forced)
I suspect it's unlikely.. but has anyone here encountered this issue
and found a solution?
Alternatively.. do you know where the right place to file bug report
about this would be? It's been a while since I've filed anything
against the linux kernel itself.
Cheers,
Toby
Xen has been widely regarded as the best performance VM for Linux for a long
time. Oracle has been one of the advocates of Xen claiming very close to
native hardware performance.
# 300% improvement in UnixBench score, with a KVM Linode vs a Xen Linode
# 28% faster at compiling a Linux kernel with a KVM Linode vs a Xen Linode
# Boot and shutdown times are greatly improved
Now Linode (one of the largest Xen sites) is moving to KVM, they list the
above as benefits of KVM which surprises me. My experience of Xen is that the
only way anything could be 300% faster is if it's an issue of disk IO
scheduling on hard drives (as multiple virtual machines on the same spinning
media causes contention and/or fragmentation issues depending on how you do
it. But given that Linode was already using SSD for all storage that's
obviously not what they are doing.
The last time I tried KVM on my laptop the performance was a lot slower than
native performance as opposed to Xen which was near enough to native hardware
performance that the difference didn't matter. I've never even tested KVM on a
server because the performance on my laptop (admittedly a couple of years ago)
was very disappointing. Last time I tested KVM performance was not only
noticably worse (EG compiles of selinux-policy-default taking about 50%
longer) but the increase in CPU use was an issue of cooling.
Has KVM improved a lot recently? How can anything be so much better than Xen
when Xen has been so close to native performance for so long?
I've just chosen KVM for a new Linode instance. They allow me to choose Xen
but say that KVM is the way of the future - presumably I would be forced to
use KVM sooner or later so it seemed easier to use it now.
--
My Main Blog http://etbe.coker.com.au/
My Documents Blog http://doc.coker.com.au/
Hi,
After re-installing Kubuntu on my (EFI, GPT) laptop (which also has Windows
10), I've ended up with a broken grub. It used to work fine.
The problem is that now it boots into grub, with no configuration, just the
grub> prompt.
I can continue by typing:
grub> configfile (hd0,gpt6)/boot/grub/grub.cfg
which then brings up the usual menu.
But I'd like to know how to configure grub so that it finds it
automatically!
Needless to say, I have already tried running grub-install /dev/sda after
booting.
(Which succeeds without error)
Any suggestions?
PS. I don't want to totally blank the drive, as it shares with a Windows 10
install that I'd like to keep.
Thanks
Toby
Hi there,
I have been using sshfs for years on a server without incident.
Now when I connect I can't write to / save the PHP files I am editing.
The server shows the following error:
sftp-server[34002]: error: process_write: write failed
I have checked the disk for space (there is plenty and I have even
deleted files). The permissions have not changed and I have tested and
reset them on various directories.
Geany: Error saving file.
Nautilus: Error creating directory: Operation not permitted
Any ideas how to debug? I think it is specific to this server.
Thanks
Piers
I run a small network of 4 machines, it is not really a network, this
connection being basicly a handy way of getting data between machines.
Because of this there is no name server or mail server running on any
machines
For out going mail I have always ssh'ed to the machine with the internet
connection and used pine, which has inbuilt support for outgoing mail.
Unfortuantely this no longer works as I now do not have direct access to my
ISP's mail server and access via the internet requires authentication and
pine does not support that.
How is outgoing mail set up done on a standard desktop system, a text based
email client on the internet access machine is the only one that will be
used. Hopefull something simple.
Although I have been running linux now for well over twenty years, network
connections between my machines has always just worked and I have always
used pine, as a consequency I have learned little of this side of Linux
configuration. Kernel and X server config are different stories though
Lindsay
Hi there,
I wonder which cross-platform software or services you are using for
remote screen sharing sessions, if any?
Commercial vendors with proprietary software make it (more or less) easy
for Windows and Mac users to share their screens remotely, fool-proof
even for non-tech-savvies (e.g. Skype, WebEx, GoToMeeting, zoom.us or
browser-based such as Google Hangouts, etc.). A typical situation would
be: I use Debian 8 and I want to share my screen with a client or
partner running Windows or Mac to demonstrate something.
My experience so far: Skype works well under Debian, but I always have
issues with the screen sharing feature. I have used TeamViewer from time
to time (works very well). WebEx, GoToMeeting, zoom.us and most of the
other services don't support Linux. Remote Desktop (RDP) predominantly
aims to remote administration. Browser-based solutions I have not tested
yet.
I would prefer open source solutions of course (even paid). Must haves:
very easy to use for the "other side" and cross-platform capability
(Linux, Windows, Mac). Optional: audio (voice) support would be nice but
could also be achieved via VoIP/Skype/phone via an extra channel.
One-to-many (someone shares his/her screen to multiple receivers) would
be also nice, but an exception.
Does anyone have any experience, suggestions, advices in this regards?
Thanks
Michael
Hi All,
Many years ago, I needed to install YACS (yet another clock
synchronizer) into my Red Hat (?) system, to keep my hardware clock from
"drifting" over time.
No mention of it, or anything on clock synchronizers, that I can find
for my Linux Mint 17 Qiana.
Not needed? Handled elsewhere as a standard feature?
Thanks,
Carl Turney
Bayswater, Vic
On Sun, 25 Oct 2015 14:02:12 Craig Sanders said,
> do you know someone who has a mobile phone that will let you borrow it
> for 10 minutes?
> perhaps they have an old phone buried at the bottom of a drawer?
> craig
On thinking the current situation over I do not regard it as serious enough
to bother any one with something I know so little about (I have never had
or used a current mobile phone). As mentioned I currently have broadband
access to Virgin with the modem, a Huawei E220, Now I do have a Huawei
E160 (Note 1) as a spare. I have currently put it away and cannot find it,
but but will surface soon as I am cleaning up my computor room today.
Another option probably worth pursuing is an external router that can use a
3/4G modem such as the Netcom Wireless 4GM3W with a Netcom N600, the latter
does not have linux suppport but the I assume the 4GM3W does. Further
research is required.
Of course a real good solution is to find a couple of Belkin micro N300's
(one as a spare) Belkin Australia claim these are readily availible.
Note 1: The Huawei E160 is a slightly cut down version of the E220.
Note 2: I did a lot of web searching and ringing around yesterday and was
offered 3 different mobile broadband dongles, none of which had in built
linux kernel support, _______________VERY_______________ frustrating I may
say.
Lindsay
On Fri, 23 Oct 2015 17:52:30 Piers Rowan said,
> Have you tested it in a typical device - phone/tablet?
No, I do not have anything (I can find) to test it on, I do have another
USB 3G modem I cannot at the moment find it.
I do not (and never will have) a mobile phone.
On Fri, 23 Oct 2015 21:06:31 Keith Bainbridge said,
> I used this for a couple of years on my laptop:
I am almost 100 percent sure its not a configuration issue. I have checked
my config with three on line sources, one of which was specfic to Optus
(both Virgin and Bendigo Telco use Optus) and everything checks out
____including___ the APN.
Looking at the data comming back it looks like the connection reachs the
Bendigo Telco servers and these are sending back a SIGHUP (a hangup
signal). My current theory is the optus network must be sending an
incorrect id to the Bendigo servers, which means a faulty sim. The problem
is of course they do not support Linux and are blaming that, and I cannot
try it on windows as the dongle is no longer switched to the mode windows
requires it in (Note 1). For various reasons including I am not sure how to
do it, I do not want to switch it back.
Note 1: When one get it it looks like a USB hardisk, Windows copies the
installation software from the dongle. when this is exicuted it switch's
the dongle into operational mode. In this it has 3 serial ports a hardisk
and a ram disk.
> On another issue, is the modem locked?
No
Lindsay
Who is interested in IRC based training? The idea would be to setup a bunch of virtual servers and then have people login to them, work through a training course, and ask questions on IRC.
If we did that for the more technically demanding hands on training sessions then the Beginners' SIG can be kept free for beginners. Also for things that require significant server resources (like the BTRFS and ZFS session) we could spread it out over an entire day to keep the server load down.
--
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