Re: Advice on encryption of external disk
On 02/04/2015 02:20 PM, Celejar wrote:
> Hi,
>
> I am preparing a USB external HDD for use with my T61 ThinkPad (Core 2
> Duo CPU T7300 @ 2.00GHz). The disk will fulfill two, very different
> functions: general backup for files (mail, documents, etc.) via
> rsnapshot (rsync type backup), and overflow storage for my full main
> HDD ("big" files such as media: audio, video, PDFs).
>
> For the backups, I need encryption; the media storage doesn't require
> it. Currently, I use different partitions on my external disks: plain
> for storage, and encrypted (dmcrypt / LUKS) for the backups (and
> storage of sensitive information). This obviously adds complexity, so
> I'm thinking of going to one encrypted partition for everything. The
> obvious possible downside is performance: everything I read indicates
> that there is a significant hit, even on modern hardware, but I don't
> really know if it's current, accurate, or relevant to my use case.
>
> What would the experts recommend: one partition for everything for
> simplicity, or separate ones for a possible performance advantage?
>
> Celejar
>
>
Hello,
Personaly, I use full encryption and each partition is on a logical
volume, with LVM physical volume encrypted.
Say I have /dev/sda2 of 100GB, it is encrypted with luks.
I open this luks volume and setup LVM with pvcreate on
/dev/mapper/luks_sda2, then create my LV.
About performance downside, if you have a recent processor with aesni
instructions (for intel, dunno for AMD but they have the same feature
too), the Linux kernel does have a module to handle hardware encryption,
which speeds up the job.
But, in both cases (with or without instructions), you will not really
notice any difference even with a quite old processor, like core i2. You
may find it a little slower at machine's first boot. If we speak about
Desktop computers. Never tried to setup encryption on loaded servers.
Also, I dont really understand why you want to do "half encryption".
Only backups and not other things? Sounds strange to me.
But you're free to do so of course.
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Re: Glibc 2.15 not found?
On 01/29/2015 07:59 PM, Stephen wrote: > > On 01/29/2015 10:46 AM, Florent Peterschmitt wrote: >> Or a custom glibc installed in an isolated prefix, then playing with >> LD_LIBRARY_PATH to load the new glibc. > >> Or if you don't want to build it by hand, you may do something tricky: >> extracting the Jessie package by hand in, again, an isolated prefix. >> But i'm not that sure it would work. > > I wouldn't mind building it by hand, I'm trying to get more 'hands on' > (pun completely intended) with Debian. I am just a novice user though so > I have a very faint clue what your talking about... I understand. Well, you don't have much choices. Force-install a newer glibc in the base system will break your entire system, so here are the options: * install another version of Debian containing the required glibc version * install another distro if you don't want to use "unstable" softwares. if you want to stay on a debian-like and are a novice, can I suggest you Ubuntu or LinuxMint? * build your glibc by hand (see LFS pages[0], they can be helpful) but install files (not configuration) in, say, /opt/glibc-. Then to use you'll need to play with some environment variables. At least you know how to run a program from command line, so env variables are just the next step :-) * download the newer, packaged, version of glibc from unstable or testing Debian, extract it by hand and put files in a prefix, like before. Then use env vars an pray for it to work. [0] http://www.linuxfromscratch.org/lfs/view/development/chapter06/glibc.html signature.asc Description: OpenPGP digital signature
Re: Glibc 2.15 not found?
On 01/29/2015 07:31 PM, Sven Hartge wrote: > Stephen wrote: > >> I'm trying to run the game VV on my system but whenever I try and >> launch it I get the following error: "./x86/vv.x86: >> /lib/i386-linux-gnu/i686/cmov/libc.so.6: version `GLIBC_2.15' not >> found (required by ./x86/libSDL2-2.0.so.0)" > >> I tried looking for glibc 2.15 in the software repository but could >> find no such package. How do I satisfy this dependency then? > > You need at least Debian Jessie/Testing für a glibc new enough. > > Grüße, > Sven. > Or a custom glibc installed in an isolated prefix, then playing with LD_LIBRARY_PATH to load the new glibc. Or if you don't want to build it by hand, you may do something tricky: extracting the Jessie package by hand in, again, an isolated prefix. But i'm not that sure it would work. signature.asc Description: OpenPGP digital signature
Re: C++ compiler g++-4.9
Le 2014-12-10 13:23, Nick Mpallas a écrit : > Hi guys, > I am building a platform and I need to compile apache mesos from sources. The > issue is that the guys the require support for specific c++11 features that > in the 4.7 compiler currently supported by debian aren't there. Will the g++ > compiler will be updated?We would like to use debian as the backbone > operating system for our cluster. > > regards > > -- > > nm > "camel is a horse made up in a laboratory" Stop me if I'm wrong, but: no major updates in a release. GCC 4.9 should be in Jessie, and is in Sid, but Jessie isn't yet released and Sid is not a release. -- Florent Peterschmitt | Please: flor...@peterschmitt.fr | * Avoid HTML/RTF in E-mail. http://florent.peterschmitt.fr | * Send PDF for documents. Proudly powered by FLOSS | * Trim your quotations. Really. | Thank you
Re: Debian by default / Debian jessie
Le 2014-12-05 11:47, Frederic Robert a écrit : Hello, How are you? Pulseaudio is used by default. I'm using debian jessie. I'd like to use Alsa by default. I removed pulseaudio (apt-get remove pulseaudio) and installed alsa-base. When i reboot the computer, i don't have sound :( Greetings, -- Frederic Robert You may use alsamixer to manage sound levels and unmute channels. Or any other application like kmix or XFCE|GNOME's volume control… -- Florent Peterschmitt | Please: flor...@peterschmitt.fr | * Avoid HTML/RTF in E-mail. http://florent.peterschmitt.fr | * Send PDF for documents. Proudly powered by FLOSS | * Trim your quotations. Really. | Thank you -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/46661569a6b6d7500fde5e1ffcc69...@peterschmitt.fr
Re: ALSA - Multiple Sources...?
On 11/27/2014 10:53 AM, ho...@rumormillnews.com wrote: [snip] > Agreed. :) dpkg -l says: > > dpkg -l |grep pulseaudio > ii gstreamer0.10-pulseaudio:amd64 > 0.10.31-3+nmu4+b1 amd64GStreamer plugin for > PulseAudio > ii gstreamer1.0-pulseaudio:amd64 1.4.4-2 > amd64GStreamer plugin for PulseAudio > rc pulseaudio 2.0-3 > amd64PulseAudio sound server > > Maybe the 'rc' at the start of that line has a meaning I don't know? > Anyway - it looks like pulseaudio is not actually present. I agree, too, > that ALSA should allow mixing without extra configuration. That's what it > had been doing for years, until a recent update apparently changed > something. > > --hobie > > "rc" means you have some configuration files lying around your system. apt-get purge pulseaudio will remove them. signature.asc Description: OpenPGP digital signature
Re: Kernel crash 3.17.2 unable to use kvm
Le 03/11/2014 17:03, Bhasker C V a écrit : > Hi, > > I tried to compile the latest kernel 3.17.2 and when loading > kvm_intel, the kernel crashes (not catastrophically but as below) and > kvm_intel never works. > The old kernel 3.14.x works fine but I dont want to use an older > kernel as a solution to the current issue. > > Can somebody help to tell me if this is an environment issue or a real > kernel bug ? > This is a DELL D620 with core2duo T5520 (vmx enabled) > Thanks > > --- > > [ 349.007575] general protection fault: [#1] SMP [snip] > You have a 3.17 kernel config based on a previous working kernel version, or you made it from scratch? signature.asc Description: OpenPGP digital signature
Re: Debian fork
Le 21/10/2014 18:46, Peter Nieman a écrit : > On 21/10/14 17:53, Doug wrote: >> What do you suggest instead of cups? Or do you not print? > > I'm using good old lpr with a self-made GUI. I consider cups an obese > replacement of something I never had a problem with. > But even though I don't have cups, I can't get rid of libcups2. If I try > to remove it, aptitude wants to remove 32 other packages. Crazy, isn't it? > > p. > > That's the "problem" of packages. If other users want to use CUPS with their softwares, *shared* libraries are needed. I mostly read this list, and I see most of people who should use Gentoo or Slackware rather than Debian… signature.asc Description: OpenPGP digital signature
About chromium in Jessie - "API keys missing" and Clang
Hello, I'm curious about two thing in the chromium browser package in Debian Jessie: - I (we?) get a message about Chromium API keys missing. Does that avoid Chromium being able to speak with google for sync and so on? (If yes, it's a good idea, for me) - In the changelog, I don't see anything about that, but I see "build with clang instead of gcc". Does this augurs some packages being built with clang in Debian, or it is just for Chromium? Thanks -- Florent Peterschmitt | Please: flor...@peterschmitt.fr| * Avoid HTML/RTF in E-mail. http://florent.peterschmitt.fr | * Send PDF for documents. Proudly powered by FLOSS | * Trim your quotations. Really. | Thank you :) signature.asc Description: OpenPGP digital signature
Re: vlc
You should also try to change video output in preferences, and disable hardware acceleration if no change. Le 11/09/2014 22:05, Frank McCormick a écrit : > On my Sid installation VLC is broken. It does not display mpegs or mkvs. > I have tried all the output modules and none make any difference. All I > get is a black screen. Audio does work however. > > How can I track down the problem? > > Thanks > > > > signature.asc Description: OpenPGP digital signature
Re: vlc
Hi. It's ok for me. It may depends on contained formats. It sounds like a video problem rather than an container format. Find what is the video format you are reading. Le 11/09/2014 22:05, Frank McCormick a écrit : > On my Sid installation VLC is broken. It does not display mpegs or mkvs. > I have tried all the output modules and none make any difference. All I > get is a black screen. Audio does work however. > > How can I track down the problem? > > Thanks > > > > signature.asc Description: OpenPGP digital signature
Re: anyone knows this errors ?
Hi, I had almost the same problem of segfault with my machine, after I changed the RAM. You should run a memtest, then try to cleanup your RAM and slots, the re-run the memtest. You can also connect one memory module and run memtest on each one. For me, I think I had some dust of bad contacts in slots. (it's a quite old hardware so…) Le 22/08/2014 17:06, laurent debian a écrit : > I have this in my syslog and I am wondering what it is > pool[1655]: segfault at 72200 ip 7fa419598200 sp 7fa4149d30c0 > error 4 in libc-2.19.so[7fa41955+19f000] > > and > kernel: [ 507.759144] perf samples too long (2509 > 2500), lowering > kernel.perf_event_max_sample_rate to 5 > kernel:[ 3696.866261] perf samples too long (5006 > 5000), lowering > kernel.perf_event_max_sample_rate to 25000 > > -- Florent Peterschmitt | Please: flor...@peterschmitt.fr| * Avoid HTML/RTF in E-mail. http://florent.peterschmitt.fr | * Send PDF for documents. Proudly powered by FLOSS | * Trim your quotations. Really. | Thank you :) signature.asc Description: OpenPGP digital signature
Re: 3.13 Kernel
When the 3.13.0 was out, some problems with filesystems seems to get in[0]. But in general I don't see any improvement, I run VMs and heavy things and it still seems as long as usual :) So it might be a very subjective impression ;) If you want, you should make some benchmarks to get more formal results. Run a database, 3D rendering, filesystem&cpu stress and so on… [0] http://www.phoronix.com/scan.php?page=article&item=linux_313ssd_filesystems&num=1 On 25/02/2014 08:38, David Baron wrote: > Is it just my very subjective impression or are these significantly faster > than > 3.12?? signature.asc Description: OpenPGP digital signature
Re: Debian Users list - signal to noise... is this normal?
Le 19/01/2014 06:43, Артур Истомин a écrit :
> On Sat, Jan 18, 2014 at 09:31:21AM -0500, Tanstaafl wrote:
>> Hi all,
>>
>> If this garbage OT crap ('sad but true Linux sucks', and 'Hey Humans
>> I'm a machine') is typical of this list, is there a debian related
>> list that doesn't allow such crap to go on and on and on and on and
>> on and on ad nauseum?
>>
>> If it is typical, and there is no other option for list based debian
>> support, I guess its time to start building another kill file.
>
> It is normal. I think you do not understand the sense and mechanics of
> open source community. So I think you need immediately reinstall
> Microsoft Windows 7 or 8 on your computer and those bastards will no
> longer get you.
More than the open source community, the popularity of a project is for
something (can we say that?) about this noise…
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Re: sudo 1.8.9p3-1 in Debian sid - infinite loop?
Le 14/01/2014 19:24, Florent Peterschmitt a écrit :
> Hi,
>
> I think there is something like an infinite loop in the latest sudo in
> Debian sid.
>
> Issuing a sudo -s make sudo consuming 100% CPU.
>
> An strace gives:
>
> recvfrom(3, "", 8, MSG_WAITALL, NULL, NULL) = 0
> poll([{fd=6, events=POLLIN}, {fd=3, events=POLLIN}], 2, 4294967295) = 1
> ([{fd=3, revents=POLLIN|POLLHUP}])
> recvfrom(3, "", 8, MSG_WAITALL, NULL, NULL) = 0
> poll([{fd=6, events=POLLIN}, {fd=3, events=POLLIN}], 2, 4294967295) = 1
> ([{fd=3, revents=POLLIN|POLLHUP}])
> recvfrom(3, "", 8, MSG_WAITALL, NULL, NULL) = 0
> poll([{fd=6, events=POLLIN}, {fd=3, events=POLLIN}], 2, 4294967295) = 1
> ([{fd=3, revents=POLLIN|POLLHUP}])
> recvfrom(3, "", 8, MSG_WAITALL, NULL, NULL) = 0
> poll([{fd=6, events=POLLIN}, {fd=3, events=POLLIN}], 2, 4294967295) = 1
> ([{fd=3, revents=POLLIN|POLLHUP}])
> recvfrom(3, "", 8, MSG_WAITALL, NULL, NULL) = 0
> poll([{fd=6, events=POLLIN}, {fd=3, events=POLLIN}], 2, 4294967295) = 1
> ([{fd=3, revents=POLLIN|POLLHUP}])
Here is the bug:
http://www.sudo.ws/bugs/show_bug.cgi?id=631
And workaround:
In /etc/sudoers, add:
Defaults use_pty
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sudo 1.8.9p3-1 in Debian sid - infinite loop?
Hi,
I think there is something like an infinite loop in the latest sudo in
Debian sid.
Issuing a sudo -s make sudo consuming 100% CPU.
An strace gives:
recvfrom(3, "", 8, MSG_WAITALL, NULL, NULL) = 0
poll([{fd=6, events=POLLIN}, {fd=3, events=POLLIN}], 2, 4294967295) = 1
([{fd=3, revents=POLLIN|POLLHUP}])
recvfrom(3, "", 8, MSG_WAITALL, NULL, NULL) = 0
poll([{fd=6, events=POLLIN}, {fd=3, events=POLLIN}], 2, 4294967295) = 1
([{fd=3, revents=POLLIN|POLLHUP}])
recvfrom(3, "", 8, MSG_WAITALL, NULL, NULL) = 0
poll([{fd=6, events=POLLIN}, {fd=3, events=POLLIN}], 2, 4294967295) = 1
([{fd=3, revents=POLLIN|POLLHUP}])
recvfrom(3, "", 8, MSG_WAITALL, NULL, NULL) = 0
poll([{fd=6, events=POLLIN}, {fd=3, events=POLLIN}], 2, 4294967295) = 1
([{fd=3, revents=POLLIN|POLLHUP}])
recvfrom(3, "", 8, MSG_WAITALL, NULL, NULL) = 0
poll([{fd=6, events=POLLIN}, {fd=3, events=POLLIN}], 2, 4294967295) = 1
([{fd=3, revents=POLLIN|POLLHUP}])
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flor...@peterschmitt.fr| * Avoid HTML/RTF in E-mail.
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Proudly powered by Open Source | * Trim your quotations. Really.
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