Hi list,
speaking about software raid, not hardware controller based.
I am trying to go for some local OpenSuse machine and adding some
storage to it. Was considering Raid6, and now reading about a bit and
people left and right scaremongering about the larger the disks these
days in the double digit terabyte capacities even, the more likely it
is that during a reconstruction of a raid subsequent errors would
occur.
I would absolutely like to keep my data consistent, and I am not
thinking about double digit terabytes either, would stick to 2TB or
4TB disks, with Raid6 thats at least 4 physical drives.
Now I am wondering if it possible to use a good robust file system
that can add some more parity or check blocks or redundancy on top of
the hardware disks, to absolutely be able to always read my data.
I can't add multiple machines or like those high availability stuff
like clusters and what not I read about DRBD (Distributed Replicated
Block Device), or maybe I am just too scared by those technical terms
or consider myself to be just a simpleton and wanting to keep it
rather simple.
My use case here is also not constant availablity, when a disk needs
to be replaced, so be it, but I don't want to lose my data that I can
not ever read certain parts of it again or such stuff.
The thing that came to my mind was, if there is some file systems that
would add redundancy and robustness onto the mdraid system of the
linux kernel?
Anyone with some useful insights? Roughly speaking, I was considering
some simple pcie esata interfaced controller card and an external case
enclosure with esata port and portmulitplier stuff inside, that can
present at least 4 physical disks as JBOD, just a bunch of disks, so
that the Linux can seem them all separately.
Speed and rebuild times are not my concern, but data persistence and
data integrity. Not even number of physical disks, I could live with
even one of those 8 bay device enclosures and cases that are out there
on the market.
Thanks for any help and hints.
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Hello List
am using Xfce : - in /var/log/warn : i see warning
" The gnome keyring socket is not owned with the same credentials as
the user login: /run/user/1000/keyring-4i77r7/control
2013-11-27T13:27:17.434100+02:00 su: gkr-pam: couldn't unlock the login
keyring "
...............
- any ideas how to fix ?
thanks
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On 27/06/17 12:22, Paul Groves wrote:
>
> On 27/06/17 08:34, Aaron Digulla wrote:
>> xmodmap -pke | less
>
> These keycodes do not seem to match the system. For example in the
> output of this command it says:
>
> keycode 158 = XF86WWW NoSymbol XF86WWW
>
> I ran setkeycodes e020 158
>
> When I press the e020 (Internet) button xev says I have pressed code
> 166 (Back button).
>
> How on earth has this happened? I specified 158 not 166. What have I
> done wrong?
>
>
Just been emailed this link:
https://unix.stackexchange.com/questions/49650/how-to-get-keycodes-for-xmod…
To quote this article:
Here you can see keycode 97 is unused on my system:
|keycode 94 = less greater less greater bar brokenbar keycode 95 = F11
XF86Switch_VT_11 F11 XF86Switch_VT_11 keycode 96 = F12 XF86Switch_VT_12
F12 XF86Switch_VT_12 keycode 97 = keycode 98 = Katakana NoSymbol
Katakana keycode 99 = Hiragana NoSymbol Hiragana |
The keycode X uses and the keycode the kernel uses are OFF BY 8 for
"historical reasons". So take 97 - 8 = 89 and use 89 with the
setkeycodes command (again as root):
So to make my vol - button work (xmodmap keycode 122 -8 = 114)
setkeycodes e01e 114
This has worked! I have re-mapped apl the buttons apart from my hotkeys.
>> No but there are lots of uncommon keycodes which you can use. For
>> example, F13-F35 or KP_F1...KP_F4.
>
> In the output of the command xmodmap -pke | less there are no codes
> for F13-F35 or KP_F1 etc
>
> I would like to set HK1 - HK4 to F13 - F16 How do I find the keycodes
> for these buttons
Still looking for the keycodes for F13-16
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All,
I bought a used iSCSI based Drobo in 2016 with 50TB in it. It works
great, but it isn't fast by today's standards. (100 MB/sec absolute
max). And I never got it to work from openSUSE (Windows and Mac did
work).
I now need to buy something similar, but with fast I/O and Linux
support: 10 Gbit Ethernet and fibre-channel may be my only options?
Or are there point-to-point SAS external racks I should consider?
Also, I will likely want to put a SSD based cache in the mix at some
point. It could be integrated into the storage subsystem, or I could
use something like bcache and have the SSD be in the server,. It just
needs to be reliable and fast.
Recommendations? (I'm thinking used and $10K at the high-end for the
subsystem including PCIx cards and switches, if needed.)
== details
I need to buy a server with 50TB usable disk for a production
environment. A high speed disk subsystem is critical. And the project
may scale up over time.
It doesn't need to be a fail-over cluster, just a single server. I'm
looking at used equipment most likely.
I was thinking one with 4 CPU sockets would let me start with 2 CPUs
and then expand to 4 later on. Lots of RAM capacity would also be
great.
My first thought was to get a Dell R920 and throw a bunch of disks in it.
https://goo.gl/images/x3Rfj2
24 disk slots!
But then I looked at what size drives are available for those slots:
2.5 inch. I only see 2TB drives max.
I'm hoping to use a Dell server because it's the preferred brand at my
(new) job. Unless I'm missing something a standalone rack mount Dell
won't work.
So, now I'm looking at a used R820 most likely and some sort of disk
subsystem to support it. I picked it because it is only a 5-year old
design and it has 4 CPU sockets I can expand into as the server demand
increases over time. Also 3TB max ram is way above what this will
require, even long term.
https://media.adn.de/media/DE/DocLib/Poweredge_Easy_Matrix.pdf
A used, barebones R820 can be had for under $2K. Just add CPUs and ram.
Greg
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This is an OpenPGP/MIME signed message (RFC2440, RFC3156).
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Content-Disposition: inline; filename="message.txt"
Content-Transfer-Encoding: quoted-printable
Hello group,
I have on several machines this problem: they are continously trying to=20
access the floppy drives. Two drives already defective, due to the=20
mechanic stress.
dmesg shows following continously:
[1537682.559487] sd 0:0:3:0: [sdc] Read Capacity(10) failed: Result:=20
hostbyte=3DDID_OK driverbyte=3DDRIVER_SENSE
[1537682.559496] sd 0:0:3:0: [sdc] Sense Key : Not Ready [current]
[1537682.559498] sd 0:0:3:0: [sdc] Add. Sense: Logical unit not ready,=20
cause not reportable
[1537682.656688] sd 0:0:3:0: [sdc] Spinning up disk...
[1537683.668046]=20
............................................................................=
..................not=20
responding...
[1537783.093938] sd 0:0:3:0: [sdc] Spinning up disk...
[1537784.104049]=20
............................................................................=
..................not=20
responding...
this can't be the wanted behaviour for any removable storage devices?
Any Hints?
Thank you and have a nice weekend
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Hi, everyone!
Recently, as I told on another thread, I installed openSUSE in dual
boot with Windows.
I would like to encrypt a partition I use to store my personal files
(Documents, Downloads, Pictures, Music and Videos). I want to use a
file system that can be mounted read/write on both Linux and Windows.
Is there any recommendation/advising/suggestion on which encrypted
file system I could use to achieve that?
I searched the opensuse and opensuse-factory mailing lists and didn't
find any for Leap 42.3 and 15.0.
openSUSE docs talks about LUKS, but I googled briefly and LUKS support
on Windows is abandonware...
Maybe I explain better showing my partition setup:
Windows recover partition - 499MB
Windows reserved partition - 99MB
Windows (C:) - NTFS - 100GB
openSUSE (/) - Btrfs - 100GB
Personal files (D:) - NTFS - 200GB *
Home (/home) - XFS - 30.53GB **
Swap - 16GB
* This partition I want to encrypt and have it accessible on both
Linux and Windows
** This partition I just want to encrypt
Thank you in advance!
Antonio
The Linux Kamarada Project
http://kamarada.github.io/
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There are a few firmware files I need to down load to get my wireless
running. I thought in Firefox, if you clicked on a file, there was a way
to select downloading. Now all I get is a dump in hexedit. Is there
something to set up to restore this basic capability?
Thanks,
Don
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I printed out this article-
https://au.pcmag.com/software/138/guide/the-best-vpn-services-of-2018
but the table at the beginning of the article won't print -- the
printing begins with the Heading then skips the table of the various
VPNs and continues from "VPNs Keep You Safe Online".
I had to use the Firefox Add-on 'Screengrab' to save that table to a
file and then printed that *.png file.
Any thoughts as to why that table will not print as part of that article
but has to be saved as a separate file in order to print it?
(Using Leap 15.0 [with kernel 4.17.11-3], Firefox v 60.0.1esr, and the
printer is Epson Expression Photo XP-960.)
BC
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There comes a time in the affairs of a man when he has to take
the bull by the tail and face the situation.
W C Fields
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Anyone using a CANBus card with openSUSE? We will soon have a MobilEye
device that we want to test integrating with our system. And it speaks
CANBus. We are on our own to provide the CANBus card. So something
that is known to play nice with Linux/openSUSE is what we are looking
for. So any suggestions or experiences are welcome.
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