info on multiboot f23 and c7
by Gianluca Cecchi
Hello,
I have a nuc6i5 where I have 2 SSD disks.
The M.2 one (250Gb) is seen as sdb, while the sata one (500Gb) as sda.
Initially I have installed f23 on the one seen as /dev/sdb and I presume
the boot loader has been installed on it, correct? How to check?
In a second moment I installed CentOS 7.2 specifying its new partitions
still on the second disk (I plan to use the first as data disk only).
With my surprise CentOS 7 made all in a fantastic way, in the sense that
during the partitioning part it recognized the fedora 23 partitions and its
lvm parts and without asking anything (actually there was no option to
manage grub configuration at all...) it configured its (I think) grub2 so
that the menu contains also the fedora 23 lines (normal one and one labeled
as "Advanced options for Fedora 23...") and they work as expected
So far so good, it went better than I imagined...
Now I have a kernel update proposal for Fedora 23 and I have not applied it
because I don'tknow if it can break anything or not (eg replace grub
configuration or so on...)
ANd the same doubt would be when a CentOS 7 new kernel will be available.
For both the OSes I configured a (different) /boot partition, if this can
be of any importance.
BTW: lastly I would like in the near future to install also the free
version of ESXi to make some tests with it and with oVirt (planned to be
installed on the CentOS 7 OS part), while the Fedora 23 part would be to be
used as a pure desktop one (that already is in place and works like a
charm!)
Thanks in advance for any tip.
3 years, 8 months
Gnuchess
by Timothy Murphy
Is anyone able to get gnuchess hints under Fedora?
I'm using gnuchess with knights, or rather the other way round -
I start knights, and choose gnuchess as chess "engine".
But I see no way to access gnuchess hints.
Incidentally, "gnuchess --xboard" does not seem to work at all.
And starting xboard does not offer any way to use gnuchess,
as far as I can see.
--
Timothy Murphy
gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin
3 years, 8 months
Re: Discourse - DeviceMapper causing corruption?
by Philip Rhoades
People,
> Date: Mon, 21 Mar 2016 15:02:02 -0600
> From: Chris Murphy <lists(a)colorremedies.com>
> To: phil(a)pricom.com.au, Community support for Fedora users
> <users(a)lists.fedoraproject.org>
> Subject: Re: Discourse - DeviceMapper causing corruption?
> Message-ID:
> <CAJCQCtSCPQRQsecq0+dzEKdNjEDfBzaDavOOV_e_ARL6LjgkDg(a)mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> On Mon, Mar 21, 2016 at 1:03 PM, Philip Rhoades <phil(a)pricom.com.au>
> wrote:
>> People,
>>
>> I had a couple of issues to sort out with installing the Docker
>> Discourse
>> app and while that was being done people made these comments:
>>
>> "Devicemapper is non starter, fails spectacularly under load and
>> causes
>> corruption. We block setup if we detect devicemapper. You need aufs or
>> another better supported docker filesystem."
>>
>> - which was not true - it did install without resorting to aufs.
>>
>> also:
>>
>> "Redhat team get very upset when we mention that it just does not work
>> for
>> us, but release after release they say there are no bugs left, and
>> each time
>> we keep seeing Discourse users complain about corruption due to device
>> mapper."
>>
>> Any comments?
>
> On the one hand, I'd say, talk is cheap, show me the bug.
>
> On the other hand, having blown up thinly provisioned pools quite a
> few times early on, I basically couldn't handle how non-deterministic
> the blow ups were, and how difficult the LVM and devicemapper tools
> are to understand the state of the pool, and fix it. So I gave up and
> went down the Btrfs path just because I understand it better, and
> there are only so many rabbit holes one has time and interest to go
> down.
>
> For a good bug report you either need a way to debug it, i.e. you need
> familiarity with that thing you are debugging. Or you need a concise
> set of reproduce steps (and a list of versions) so someone else, like
> a dev or more experienced user, can reproduce that environment and
> steps and debug it. Without one of those two things at least, I think
> it's unreasonable to say "hi this is busted" and then just walk away.
>
> aufs is just not workable in my opinion because it's not in the
> mainline kernel. So any sense of portability can't be that important
> if you're going to depend on aufs. There are plenty of bugs to go
> around at this point, between overlay(fs), btrfs, and devicemapper
> although I think by now most of the devicemapper stuff is probably the
> more stable of the three (?) just a guess really. I had 500+ container
> states as Btrfs subvolumes and never ran into a Btrfs related problem
> though. What are the CoreOS folks using? Overlay or dm?
I had another response on the Discourse forum:
"It's probably this bug, devicemapper seems to be unable to free deleted
files until you delete the container:
https://github.com/docker/docker/issues/188672
Which is catastrophic for any long-lived server that uses temporary
files in any capacity at all."
Does that also make sense to more clued-up tech people than me?
Regards,
Phil.
--
Philip Rhoades
PO Box 896
Cowra NSW 2794
Australia
E-mail: phil(a)pricom.com.au
3 years, 8 months
Adding aliases & functions to PATH
by Steven P. Ulrick
Hello, Everyone
I will do detailed troubleshooting on this later today, but I thought
I'd see if you can figure this out with what I can remember...
I just did a fresh install of Fedora 23, with a brand new user account.
I proceeded to copy certain changes to my PATH from my old ~/.bashrc
(created on Fedora 20) Didn't copy the whole thing over, just copy and
pasted what I really need right now. Then I log out and log back in.
Or try to log back in... I get an error message that starts like this:
"All shell packages missing" The login process hangs at this point.
BUT, when I go back to the login screen, instead of "Sign in" or
whatever it says, it says "Unlock" But, of course I cannot log in.
If I go back to the original .bashrc (as shipped with Fedora 23) and
reboot, then I can log in.
Later on today, I will try adding just one alias, or one change to my
PATH at a time, to see what it takes to trigger this.
I'm sure I've made mistakes with my .bashrc & .bash_profile before, but
I have NEVER had anything like this happen.
And I've been using Red Hat/Fedora since Red Hat 7.0...
Thank you for your help.
Steven P. Ulrick
3 years, 8 months
What does systemd-coredump do?
by Ranjan Maitra
other than slow down a machine?
Hi,
Of late, the midori browser has been crashing on F23 with unfailing regularity. The frequency is very high, as in a minute (here I was, looking at a ebay listing:
$ midori&
[1] 10128
$
(midori4:10128): Gtk-WARNING **: Error loading theme icon 'bookmark-new' for stock: Icon 'bookmark-new' not present in theme
(midori4:10128): Gtk-WARNING **: Error loading theme icon 'user-trash' for stock: Icon 'user-trash' not present in theme
Vector smash protection is enabled.
openjdk version "1.8.0_77"
OpenJDK Runtime Environment (build 1.8.0_77-b03)
OpenJDK 64-Bit Server VM (build 25.77-b03, mixed mode)
[1]+ Segmentation fault (core dumped) midori
$
Ok, so it crashed, dumping core, but there is also a very greedy process that is started.
$top
10676 root 20 0 130192 97888 2420 R 93.8 1.3 0:05.29 systemd-core
This process, not always, but often hangs around for ever, slowing everything down, especially if there are multiple instances of midori being opened and crashed, one after the other (and multiple systemd-cores running as a result, one after the other).
So, what does this systemd-core do and how do I disable it, if it does not do much that is crucial?
Btw, here is the webpage on ebay, I was trying to look at for the above example:
http://www.ebay.com/itm/Pro-Carbon-Fiber-Mountain-Road-MTB-Bike-Bicycle-C...
It only crashes if you play around that webpage for a while. It also crashes at a lot of other webpages.
Many thanks and best wishes,
Ranjan
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3 years, 8 months
Fedora 23 Apper display garbled
by Mayavimmer
Hello list, this is my first question on Fedora lists. Gentle guiding
appreciated.
Problem: when I run Apper the progress information, such as "Downloading
gcc" and similar, is a bit garbled. It seems that it writes
"Downloading" first, then overwrites it with "Downloading gcc" shifted
to the right by 4 or 5 spaces, making it hard to read.
Is this normal? Is it a known bug?
And how do I search the list to see if it has been discussed already?
Thanks.
3 years, 8 months
Major owncloud updates incoming
by James Hogarth
Hi all,
We're at the last stages of preparing the first major owncloud update in a
while.
The current version of owncloud in Fedora is the fairly old stable 8.0
release (presently 8.0.10) which we want to bring back in line with the
current owncloud upstream release of 8.2.2.
Unfortunately it's not possible to migrate directly from 8.0.x to 8.2.x as
upstream only supports jumping in increments with no skipping of major
releases.
In order for a smooth transition to 8.2.x (and after that 9.0.x when it's
released) we'll be releasing 8.1.5 to F23 and F22 within the next couple of
weeks.
We plan to leave this in updates-testing for a slightly longer period than
usual to allow for a wider test base for a major version jump. Please
remember your backups prior to the upgrade!
Once 8.1.5 is pushed to updates 8.2.2 will be pushed to updates-testing for
a similar extended period. It's imperative that the 8.1.5 update is applied
before the 8.2.2 update is pushed to updates.
If you want to assist in the testing and provide feedback or bug reports
please use the usual channels of bodhi and bugzilla - both easily
accessible from pkgdb:
https://admin.fedoraproject.org/pkgdb/package/rpms/owncloud/
Kind regards,
James
3 years, 8 months
devtmpfs on /dev type devtmpfs
by Paul Schroeder
Hello all..
What would be the proper way to disable/prevent the mount from happening in
the subject line?
Thanks in advance...Paul..
--
---
Paul B Schroeder <paul.schroeder "at" nimbix "dot" net>
3 years, 8 months
export of programs via ssh
by Todor Petkov
Hello,
I have the following situation:
My workstation is Fedora 23, with the latest updates.
I have also several virtual machines with Fedora23 and Centos 5/6/7.
When I log in Fedora via ssh and try to run firefox from Fedora, there
is no activity, it just stays and no export is coming on my screen.
When I log in this machine via Windows (putty + xming), the export is
fine. I have no problems with the export of lets say wireshark/xclock.
The machine is with the latest firefox/kernel
When I start firefox with strace, it says:
--- SIGVTALRM {si_signo=SIGVTALRM, si_code=SI_TKILL, si_pid=5575,
si_uid=1003} ---
rt_sigreturn({mask=[]}) = -1 EINTR (Interrupted system call)
wait4(5592, 0x7ffeecd03cc4, 0, NULL) = ? ERESTARTSYS (To be
restarted if SA_RESTART is set)
Similar problem is for Centos7 - firefox starts, but it's like hung -
no url back, just gray window. Xclock export is fine. Windows putty
session with firefox is fine
Can someone give a hint what I am doing wrong?
Regards,
3 years, 8 months
How to rip a DVD?
by thomas cameron
Howdy, all -
I have purchased a DVD for my kids, and I want to make it available on
their tablet for car trips and the like. Totally legal, not pirating,
blah, blah, blah.
I've always used handbrake to rip an mp4 file for this, but this
particular DVD seems to be copy protected somehow. It's "From Up On
Poppy Hill," from Studio Ghibli.
Does anyone know a way of doing this on Fedora? My Google-fu must not be
good, as I've found references to this being copy protected, but am only
finding links to closed source Windows software to make copies.
Thanks,
Thomas
3 years, 8 months