Re: mp4 to dvd

[Tim via users]

On Fri, 2021-12-31 at 21:07 +0100, Wolfgang Pfeiffer wrote:
> I haven't actually tried to copy such a VOB file to a DVD. So at
> worst, you ruin a disk ... ;)

As a test, you can create an ISO image file of a DVD, and see if VLC
(or another media player) will play it as a DVD.
 
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Re: NAS purchase advice

[Tim via users]

On Fri, 2021-12-31 at 12:18 -0400, George N. White III wrote:
> RAID boxes have some useful capabilities like staging power to drives
> on startup.  There are use cases that do trivial computations on
> 1000's of files where it would be really nice to have lots of cheap
> compute nodes, each with a disk, so you could distribute the files to
> the disks and have the output files appear in some
> network filesystem.   
> 
> There are some youtube videos for R-pi NAS -- getting power to all
> the drives is an issue and without staging you need a very capable
> PS.

Ah, the days when I ran a BBS on an Amiga 2000.  5 or 6 SCSI hard
drives mounted inside, running on the original power supply (and hard
drives wanted a fair whack of power in those days, despite being very
small in size - hence the large number of them).  Never skipped a beat.
 
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Re: Bad USB drive?

[Tim via users]

On Fri, Dec 31, 2021 at 9:10 AM Robert Moskowitz:
>> It has been sitting in my "backed up" bin for over a year.  I
>> backed up something to it and now it is dead.
>>
>> Typically I back up something important with a double backup,


On Fri, 2021-12-31 at 19:59 -0700, Chris Murphy wrote:
> Yeah there's a Microcomputer Center near me. I sooner suspect it's
> just a bad luck defect rather than fake flash. But also, some flash
> out there will lose data when on the shelf too long.

I never use flash drives for any kind of backup purposes.  The things
have multiple failures (wearing out, electronic breakdown, static
electricity, mechanically falling apart, getting scrambled by a PC with
poor 5Vdc power supplies on the USB ports, getting reformatted by a
computer that couldn't read their file system, and simply getting
lost).  And they're often too small, or their filesystem can't handle
large files.  I consider them only good for sneakernet purposes.
 
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Re: Bad USB drive?

[Chris Murphy]

On Fri, Dec 31, 2021 at 9:10 AM Robert Moskowitz  wrote:
>
>
>
> On 12/31/21 00:22, Chris Murphy wrote:
> > On Wed, Dec 22, 2021 at 2:03 PM Robert Moskowitz  
> > wrote:
> >> so something killed it and since tomorrow is garbage day...
> >>
> >> Sigh.  that was a good $8 down the drain.
> > Return it. Don't let people steal from you. Used a credit card? Report
> > it. Do a charge back. You have 60 days from the date the statement
> > containing the charge was mailed to you. If it's after 60 days, card
> > might have an extended warranty on everything, give that a shot.
>
>
> It has been sitting in my "backed up" bin for over a year.  I backed up
> something to it and now it is dead.
>
> Typically I back up something important with a double backup, like tax
> records, so I doubt I really lost anything, but it is way past
> warranty.  Sigh.
>
> It is from Microcomputer Center over in Troy MI.  They have these bins
> of USB sticks very low price.  No packaging, just take a couple out of
> the bin at check out.  I got a Dec present from them in a free 128GB
> stick and bought 4 16GB for $5 each while I was restocking my DVD blanks
> (stack of 500 Verbatim DVDs).  They are a good place to pick up stuff
> after a run to Costco; just a couple miles up the road.  :)

Yeah there's a Microcomputer Center near me. I sooner suspect it's
just a bad luck defect rather than fake flash. But also, some flash
out there will lose data when on the shelf too long.



-- 
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Re: LibreOffice Calc chart printout missing axes and gridlines. [SOLVED]

[home user]

On 12/29/21 8:03 PM, Tim via users wrote:


To me, the idea of a zero-width line would mean non-printing, so I
would avoid it.  In fact, when I print tables and charts, one of the
things I experiment with is quite thin lines and not 100% black, as
they tend to make tables ugly and more cluttered.


I agree.  Even with 0.02-inch thickness and 170-170-170 (light gray) 
color, the grid lines come on too strong.  I'll get around to trying 
0.01 inch one of these days, and if that's still too much or LibreOffice 
doesn't allow it, a yet lighter gray.



Color perception is complex and tricky[snip]...I've
longed for much better color gamuts for monitors for a long time.


Perception [... snip...]
When it comes to monitors, the actual tint (or hue) of the red phosphor
isn't pure red.  Not only isn't it 100% saturated red, but it's often
not red (on most old domestic CRT TVs it actually verged towards
orange).  Likewise, with the blue and green phosphors not being 100%
mono-chromatic, and not being precisely the same tint on each screen.
Apart from meaning you couldn't get pure, or accurate colours, it meant
each screen looked different.  You get similar impreciseness whether
it's CRT, plasma, or LCD.


Monitors generally handle white to intermediate saturation very well. 
It's high saturation that they can't handle, especially in the green to 
cyan range and the red to violet/purple range.  I've known for many 
years that 255-000-000 is orange-red, not red.  What I've most been 
wanting is an excellent high saturation true red, and high saturation 
purples and violets.  Mixing a little blue into "red", say 255-000-015 
makes for a good red (not orange-red) hue, but the result noticeable 
lacks saturation.


I'm actually quite impressed with how well our visual system adapts 
(within limits) to the weaknesses of both monitors and printouts.


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Re: urgent problem: "NVIDIA kernel module missing..." [SOLVED]

[home user]

On 12/30/21 2:36 PM, home user wrote:

(f34)

I'm using my old windows-7 box to do e-mail.

I did my weekly patches ("dnf upgrade") an hour ago.  After rebooting, 
after the rightmost rectangle turns white, I get the message "NVIDIA 
kernel module missing. Falling back to nouveau.". A few seconds later, 
the 3 rectangles turn orange.  Then the screens go black and nothing 
further happens.  I have to use the reset button on the top of the 
tower.  The behavior is the same no matter which of the 3 grub menu 
Fedora entries I choose.  No luck with the rescue mode (f30).  I do have 
an f31 live USB stick, but that has no e-mail client.


How do I get my f34 working properly?  All I have to work with is 
windows-7 (this is a dual-boot workstation) and the f31 live USB stick. 
Please keep in mind that I'm a "home user" with no sys.admin. training. 
My sys.admin. skills are *very* basic.


Ed's solution,
removing the old driver (dnf erase *nvidia*), then
installing the correct driver (dnf install akmod-nvidia-470xx)
worked.

The problem arose when my weekly patches updated the working driver with 
a newer one that does not support my NVIDIA Corporation GK106 [GeForce 
GTX 660] graphics card.


I thank Ed for his time and effort on this issue.

I've marked this thread "SOLVED".
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Re: Weird behavior of dnf install

[Miguel Lavalle]

Hi,

The mariadb community has an active bug that describes this situation:
https://bugzilla.redhat.com/show_bug.cgi?id=2026933. I started an email
thread with them: https://lists.launchpad.net/maria-discuss/msg06179.html.
The recommended workaround is to explicitly install the "mariadb" package,
which fixes my issues.

Cheers

On Thu, Dec 30, 2021 at 5:59 PM Miguel Lavalle  wrote:

> Hi,
>
> In both cases, I get the exact same output to the two following commands:
>
> $ rpm -qi mariadb-server
> Name: mariadb-server
> Epoch   : 3
> Version : 10.5.13
> Release : 1.fc34
> Architecture: x86_64
> Install Date: Thu 30 Dec 2021 04:22:06 PM UTC
> Group   : Unspecified
> Size: 71001174
> License : GPLv2 and LGPLv2
> Signature   : RSA/SHA256, Thu 02 Dec 2021 03:32:29 PM UTC, Key ID
> 1161ae6945719a39
> Source RPM  : mariadb-10.5.13-1.fc34.src.rpm
> Build Date  : Thu 02 Dec 2021 01:13:13 PM UTC
> Build Host  : buildvm-x86-11.iad2.fedoraproject.org
> Packager: Fedora Project
> Vendor  : Fedora Project
> URL : http://mariadb.org
> Bug URL : https://bugz.fedoraproject.org/mariadb
> Summary : The MariaDB server and related files
> Description :
> MariaDB is a multi-user, multi-threaded SQL database server. It is a
> client/server implementation consisting of a server daemon (mariadbd)
> and many different client programs and libraries. This package contains
> the MariaDB server and some accompanying files and directories.
> MariaDB is a community developed fork from MySQL.
>
>
> $ which mysql
> /usr/bin/mysql
>
> The difference, though, is in the output to 'ls -l /usr/bin/mysqladmin':
>
> # Good case, in which I install mariadb before anything else and I can set
> root password with mysqladmin
> # Note that /usr/bin/mysqladmin is a link to mariadb-admin
> $ ls -l /usr/bin/mysqladmin
> lrwxrwxrwx. 1 root root 13 Dec  2 13:44 /usr/bin/mysqladmin ->
> mariadb-admin
>
> # Whereas in the bad case, in which mariadb is installed after vim and git
> and mysqladmin doesn't allow me
> # to set root password, /usr/bin/mysqladmin is an executable file and
> mariadb-admin is not installed
> $ ls /usr/bin/mysqladmin -l
> -rwxr-xr-x. 1 root root 6738168 Nov  1 01:52 /usr/bin/mysqladmin
> $ ls /usr/bin/mariadb-admin
> ls: cannot access '/usr/bin/mariadb-admin': No such file or directory
>
> I should probably also mention that:
>
> 1. I'm running these tests locally in VMs that I create with vagrant and I
> am using this box:
>
> config.vm.box_url = "
> https://download.fedoraproject.org/pub/fedora/linux/releases/34/Cloud/x86_64/images/Fedora-Cloud-Base-Vagrant-34-1.2.x86_64.vagrant-virtualbox.box
> "
>
> 2. I am replicating in my local environment this problem because it is
> manifesting itself in one of the OpenStack CI system job:
> https://zuul.openstack.org/builds?job_name=neutron-ovn-tempest-ovs-master-fedora.
> All those failures are due to this problem with mysqladmin. As it can be
> seen in the job's page, the problem started showing up on December 13th.
>
> Any ideas as to what might be the root problem?
>
> Thanks
>
> Miguel
>
>
>
> On Wed, Dec 29, 2021 at 5:25 PM Miguel Lavalle 
> wrote:
>
>> Hi,
>>
>> I am installing MariaDB in Fedora 34 server with the following sequence
>> of commands:
>>
>> sudo dnf upgrade -y
>> sudo dnf install -y mariadb-server mariadb-devel
>> sudo dnf -y install git vim
>>
>> With this sequence of commands, I get the following installed:
>>
>> $ mysql --version
>> mysql  Ver 15.1 Distrib 10.5.13-MariaDB, for Linux (x86_64) using
>>  EditLine wrapper
>>
>> and I can successfully perform the initial setup of the root password:
>>
>> sudo mysqladmin -u root password password
>>
>> and continue with the rest of my installation.
>>
>> However, if I change the sequence of commands to:
>>
>> sudo dnf upgrade -y
>> sudo dnf -y install git vim
>> sudo dnf install -y mariadb-server mariadb-devel
>>
>> What I get installed instead is:
>>
>> $ mysql --version
>> mysql  Ver 8.0.27 for Linux on x86_64 (Source distribution)
>>
>> and the 'sudo mysqladmin -u root password password' command fails with:
>>
>> mysqladmin: unable to change password; error: 'You have an error in your
>> SQL syntax; check the manual that corresponds to your MariaDB server
>> version for the right syntax to use near '() IDENTIFIED BY
>> 'secretdatabase'' at line 1'
>>
>> Could anyone shed some light on this?
>>
>> Thanks!
>>
>
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Re: F35 - yet another kernel crash

[Samuel Sieb]

On 12/31/21 12:52, Robert Moskowitz wrote:



On 12/31/21 15:32, Samuel Sieb wrote:

On 12/31/21 08:57, Robert Moskowitz wrote:
I was downloading some mp4 lectures in Firefox and getting ready to 
respond to the save to dialog when the system hung hard requiring a 
power cycle.  Couple not even switch to a non-graphic session to 
login as root.


I had just done a dnf update that installed the new 5.15.11 kernel 
(was running 15.10) along with new libvirt stuff (I run QEMU with one 
image).


Did you reboot after that update?


No.  Prior versions I often did not update for days after a kernel 
update.  I think I picked up from someplace that a new kernel does not 
force an update.  the system continues to run on the old one.


Right, each kernel is independent.

You can try running "journalctl -r -b -1" to see the last logs from 
the previous boot.  Use a larger negative number if you have rebooted 
since the incident.
I piped that to a file which is 9.4MB.  Is that what I should attach to 
the bug report?


No, the point was for you to take a look and see if there was an obvious 
reason for the crash.  It should either be the last thing in the log or 
near the end depending on what happened.

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Re: F35 - yet another kernel crash

[Robert Moskowitz]

On 12/31/21 15:32, Samuel Sieb wrote:

On 12/31/21 08:57, Robert Moskowitz wrote:
I was downloading some mp4 lectures in Firefox and getting ready to 
respond to the save to dialog when the system hung hard requiring a 
power cycle.  Couple not even switch to a non-graphic session to 
login as root.


I had just done a dnf update that installed the new 5.15.11 kernel 
(was running 15.10) along with new libvirt stuff (I run QEMU with one 
image).


Did you reboot after that update?


No.  Prior versions I often did not update for days after a kernel 
update.  I think I picked up from someplace that a new kernel does not 
force an update.  the system continues to run on the old one.


The hang happened maybe 5 min after the update was finished. Fortunately 
it WAS finished while I was off doing other work


You can try running "journalctl -r -b -1" to see the last logs from 
the previous boot.  Use a larger negative number if you have rebooted 
since the incident.
I piped that to a file which is 9.4MB.  Is that what I should attach to 
the bug report?


thanks


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Re: F35 - yet another kernel crash

[Samuel Sieb]

On 12/31/21 08:57, Robert Moskowitz wrote:
I was downloading some mp4 lectures in Firefox and getting ready to 
respond to the save to dialog when the system hung hard requiring a 
power cycle.  Couple not even switch to a non-graphic session to login 
as root.


I had just done a dnf update that installed the new 5.15.11 kernel (was 
running 15.10) along with new libvirt stuff (I run QEMU with one image).


Did you reboot after that update?
You can try running "journalctl -r -b -1" to see the last logs from the 
previous boot.  Use a larger negative number if you have rebooted since 
the incident.

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Re: mp4 to dvd

[Wolfgang Pfeiffer]

On Fri, Dec 24, 2021 at 02:17:57PM -0600, Michael Hennebry wrote:

Any suggestions for converting mp4 files to VOB?
Even an example with mencoder might be useful.
Long long ago, I used mencoder for making DVD video files.
Lost track of the script I used.
I tried it again recently,
but getting all the options right was making my head swim.

At least one of the files I want to convert is 480x360@24 .



If "480x360@24" means native resolution or frame size at 24fps then
I'd try:

ffmpeg -i source.mp4 -target film-dvd -s 480x360 output.vob

Make sure to write the "-s" option after the "-target ..." one,
because the "target film-dvd" is some sort of wrapper that already
includes some "-s" switch, namely 720x480. So you might need to
override it. See man ffmpeg{-all} for the "-target" option.

I haven't actually tried to copy such a VOB file to a DVD. So at
worst, you ruin a disk ... ;)

And thanks for the question: I got curious myself for an answer.
ffmpeg might be a bit difficult to handle at times, but it's great
anyways ...

Good luck!
Wolfgang
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ntfs3 versus ntfs-3g, mount options

[George N. White III]

Using an external drive formatted on a Windows system:

# mount -t ntfs3 /dev/sdc1 /mnt -o windows_names,uid=$UID,gid=$GID
mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sdc1,
missing codepage or helper program, or other error.

dmesg has: ntfs3: Unknown parameter 'windows_names'

The drive ends up mounted using the old fuse ntfs-3g.'

Plugin the drive and go to Files, the drive is listed and I can mount it,
but I see the same dmesg entry and the drive is mounted with fuse.

My workaround was to add an entry in fstab:
UUID=99  /Volumes/WindowsBackup ntfs3
defaults,noauto,user,uid=,gid=  0   0

The "Disks" benchmark shows similar read rates, but average access time
goes from 23 on ntfs-3g to 18 msec using ntfs3.

-- 
George N. White III
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Re: F35 - yet another kernel crash

[Tom Horsley]

On Fri, 31 Dec 2021 12:31:44 -0500
Robert Moskowitz wrote:

> So it seems not to be my problem?

I guess not.
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Re: F35 - yet another kernel crash

[Robert Moskowitz]

On 12/31/21 12:23, Tom Horsley wrote:

On Fri, 31 Dec 2021 12:14:23 -0500
Robert Moskowitz wrote:


How do I know if I am using nouveau and then how to switch to nvidia?

Run:

lspci | fgrep VGA


00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. 
[AMD/ATI] Kabini [Radeon HD 8330]



if that mentions an NVIDIA video card, then fedora will have used
the nouveau drivers by default. You could also run lsmod and see
if it mentions nouveau anywhere.

To install the nvidia drivers goto rpmfusion.org, there are instructions
there for how to enable the rpmfusion repos and there are HOWOTO links
describing how to install nvidia drivers once the repos are enabled.

Of course, if lspci doesn't say anything about an NVIDIA card, then
all this is completely irrelevant :-).


So it seems not to be my problem?

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Re: F35 - yet another kernel crash

[Tom Horsley]

On Fri, 31 Dec 2021 12:14:23 -0500
Robert Moskowitz wrote:

> How do I know if I am using nouveau and then how to switch to nvidia?

Run:

lspci | fgrep VGA

if that mentions an NVIDIA video card, then fedora will have used
the nouveau drivers by default. You could also run lsmod and see
if it mentions nouveau anywhere.

To install the nvidia drivers goto rpmfusion.org, there are instructions
there for how to enable the rpmfusion repos and there are HOWOTO links
describing how to install nvidia drivers once the repos are enabled.

Of course, if lspci doesn't say anything about an NVIDIA card, then
all this is completely irrelevant :-).
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Re: F35 - yet another kernel crash

[Robert Moskowitz]

On 12/31/21 12:10, Tom Horsley wrote:

If you are using the nouveau video drivers, try switching to the
rpmfusion nvidia drivers. Every new release I try to use the
nouveau drivers, and within a couple of weeks, I always
get crashes like this, almost always when using a browser. So
I switch to nvidia, and the crashes stop.


How do I know if I am using nouveau and then how to switch to nvidia?

thanks
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Re: F35 - yet another kernel crash

[Tom Horsley]

If you are using the nouveau video drivers, try switching to the
rpmfusion nvidia drivers. Every new release I try to use the
nouveau drivers, and within a couple of weeks, I always
get crashes like this, almost always when using a browser. So
I switch to nvidia, and the crashes stop.
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F35 - yet another kernel crash

[Robert Moskowitz]

I was downloading some mp4 lectures in Firefox and getting ready to 
respond to the save to dialog when the system hung hard requiring a 
power cycle.  Couple not even switch to a non-graphic session to login 
as root.


I had just done a dnf update that installed the new 5.15.11 kernel (was 
running 15.10) along with new libvirt stuff (I run QEMU with one image).


ABRT says it does not have the traceback info to compose a report. 
Second time this has happened.


lots of files in /var/spool/abrt/oops-2021-12-31-11:38:51-786-0 but what 
to include in a bug report?


Sigh.  Having problems with F35...





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Re: NAS purchase advice

[George N. White III]

On Fri, 31 Dec 2021 at 04:47, J.Witvliet--- via users <
users@lists.fedoraproject.org> wrote:

>
>
> Just a final thought….
> Ever contemplated about a tiny storage ceph-cluster, each disk connected
> to an R-pi?
> No spofs, and easier to maintain and upgrade…
>
> RAID boxes have some useful capabilities like staging power to drives on
startup.
There are use cases that do trivial computations on 1000's of files where
it would
be really nice to have lots of cheap compute nodes, each with a disk, so
you could
distribute the files to the disks and have the output files appear in some
network
filesystem.

There are some youtube videos for R-pi NAS -- getting power to all the
drives is
an issue and without staging you need a very capable PS.

-- 
George N. White III
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Re: Bad USB drive?

[Robert Moskowitz]

On 12/31/21 00:22, Chris Murphy wrote:

On Wed, Dec 22, 2021 at 2:03 PM Robert Moskowitz  wrote:

so something killed it and since tomorrow is garbage day...

Sigh.  that was a good $8 down the drain.

Return it. Don't let people steal from you. Used a credit card? Report
it. Do a charge back. You have 60 days from the date the statement
containing the charge was mailed to you. If it's after 60 days, card
might have an extended warranty on everything, give that a shot.



It has been sitting in my "backed up" bin for over a year.  I backed up 
something to it and now it is dead.


Typically I back up something important with a double backup, like tax 
records, so I doubt I really lost anything, but it is way past 
warranty.  Sigh.


It is from Microcomputer Center over in Troy MI.  They have these bins 
of USB sticks very low price.  No packaging, just take a couple out of 
the bin at check out.  I got a Dec present from them in a free 128GB 
stick and bought 4 16GB for $5 each while I was restocking my DVD blanks 
(stack of 500 Verbatim DVDs).  They are a good place to pick up stuff 
after a run to Costco; just a couple miles up the road.  :)


I have returned other stuff to them that were bad and they were very 
good at returns.


Separate problem I have is keyboards.  My acid sweat wears off the 
letters.  'N' is worst, 'E', 'D', 'V', and 'O' are wearing too.  I 
bought this supposedly good HP keyboard about a year ago.  I stopped 
getting their Inland cheap boards, as those were wearing off in a few 
months.  I was more tired of going through the return process than they 
seemed to be with the returns of 'defective' keyboards.  I just want a 
simple USB keyboard that is plugged into my KVM...


what ever became of solid IBM clicky keyboards?   :)

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Re: f35 and NVIDIA entanglement

[John Pilkington]

On 31/12/2021 01:47, Robert McBroom via users wrote:

On 12/30/21 07:29, John Pilkington wrote:

On 29/12/2021 20:31, John Pilkington wrote:



I have a GT710 in F34.  It was running the rpmfusion default driver, 
in the 470 series but without the 470xx label.  Earlier this week 
'dnf update' wanted to install 495, the new (unlabelled) default 
which does not support that card, but I didn't accept.


Then the kde 'software updater' widget showed updates, but with a red 
dot.  It looked as if I could tick-to-disable just the nvidia 
updates, so I did and went ahead;  the driver updates happened anyway.



Without rebooting I tried

    dnf install --allowerasing akmod-nvidia-470xx

which ran the usual tests and started to go ahead, but then reported 
a file conflict.


So  I tried

    sudo rpm -e --nodeps xorg-x11-drv-nvidia-libs

followed by

    sudo dnf install --allowerasing akmod-nvidia-470xx kmod-nvidia-470xx

which all worked.

    sudo systemctl reboot

  then rebooted as normal, but NVDEC tv decoding was not available 
until I also did


    sudo dnf install xorg-x11-drv-nvidia-470xx-cuda

HTH

John P

Here's the current status of that installation.  I tried to erase the 
only 495.46 package there, but it wanted to take the cuda package 
below it too.  Maybe I only need the cuda-libs.


{{{

[john@HPFed packaging]$ rpm -qa | grep -i nvidia
nvidia-texture-tools-2.1.2-1.fc34.x86_64
xorg-x11-drv-nvidia-470xx-libs-470.94-1.fc34.x86_64
xorg-x11-drv-nvidia-470xx-kmodsrc-470.94-1.fc34.x86_64
nvidia-settings-470xx-470.94-1.fc34.x86_64
xorg-x11-drv-nvidia-470xx-470.94-1.fc34.x86_64
akmod-nvidia-470xx-470.94-1.fc34.x86_64
kmod-nvidia-470xx-470.94-1.fc34.x86_64
kmod-nvidia-470xx-5.15.10-100.fc34.x86_64-470.94-1.fc34.x86_64
kmod-nvidia-470xx-5.15.11-100.fc34.x86_64-470.94-1.fc34.x86_64
xorg-x11-drv-nvidia-470xx-cuda-libs-470.94-1.fc34.x86_64
xorg-x11-drv-nvidia-470xx-devel-470.94-1.fc34.x86_64
xorg-x11-drv-nvidia-470xx-power-470.94-1.fc34.x86_64
nvidia-persistenced-495.46-1.fc34.x86_64
xorg-x11-drv-nvidia-470xx-cuda-470.94-1.fc34.x86_64
[john@HPFed packaging]$

}}}
___ 


John

Are you saying you have a graphical desktop with the current rpmfusion 
drivers for the gt710?


Yes, it appears to be working as before, and I don't expect problems 
with future updates.  But Ed's instructions in the other thread don't 
require 'oddities' like rpm -e --nodeps and dnf --sllowerasing.



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Re: NAS purchase advice

[J.Witvliet--- via users]

From: "George N. White III" mailto:gnw...@gmail.com>>
Date: Thursday, 23 December 2021 at 00:02:02
To: "Community support for Fedora users" 
mailto:users@lists.fedoraproject.org>>
Subject: Re: NAS purchase advice

On Thu, 2 Dec 2021 at 05:47, Walter Cazzola 
mailto:cazz...@di.unimi.it>> wrote:
Dear Fedoers,

I'm planning to buy a NAS to backup my Linux boxes. I've spent few days at
looking for it on the Internet but I've some hard time to find a NAS that fits
my needs.

I intend to use it both the backup my data but also to keep consistent the
data on several linux-boxes. That is, the data are changed on one machine
(incrementally) back-upped and then restored from another one and vice versa.

As an inexperienced user, the characteristics I've pointed out are:
   - ethernet based NAS optionally with wake-on lan (ie., the capability of
 being turned on by a signal over the internet)
   - Linux compliant ie.,
   - it should be formatted in ext3/4 or other *nix file system to maintain 
all
 the linux file details such as access rights, attributes, links, name
 lengths/characters, ...
   - rsync should be a viable solution to update/restore the backup
   - files should be accessible over the internet possibly via ssh, https, or
 mount over the internet   - possibility to create multiple partitions, 
possibly also with multiple
 file systems.
   - RAID 5 or better the supported replicated storage should be at least 5TB
   - optionally I would also like to have some way to limit/control/monitor
 the accesses from the external, eg., via firewall (it will be on a
 intranet and I can put a firewall on the modem but it would be nice to
 have some extra control over security and privacy)

I do not have a net preference between mechanical and optical storage even
if I suppose that given the same storage size mechanical solutions are cheaper
and optical ones are faster. Probably cheaper (especially when associated with
more reliable) is better than faster.

From your experience do you have some brand/model to suggest? Or something
that I should consider that I didn't list?

For years, Mac and Windows users have been able to use high-end exterrnal RAID
arrays. e.g. for professional video. There are external USB-3 cases that claim 
to
support RAID on linux.   Linux supports Thunderbolt 3, but I hadn't encountered
external TB RAID arrays with Linux support before retiring in 2018.

A search today found:

T4-S12L.TB3 Thunderbolt 3 Four Tray-Less SAS (12Gb) /SATA III Support RAID with 
LCD Control For Mac, Windows And Linux
https://www.datoptic.com/ec/portable-thunderbolt-3-four-sata-sas-ssd-raid-quiet-tower-lcd-control.html

P16-R64L.TB3 - 64TB Thunderbolt 3 RAID: 
https://www.datoptic.com/ec/60tb-thunderbolt-3.html
The specs say: "Must use Linux Kernel 4.13 with Ubuntu 18.04 & 
17.10".

I assume there are other vendors selling external TB3 or USB3 RAID boxes.
I like external RAID arrays because you can plug them into a host configured for
your needs and running the same OS as your other boxes.  If you could afford it,
you could get external RAID arrays with vendor supplied drives.   The vendor
gets statistics on drive performance for all their drives and I've heard of 
replacement
drives arriving with a note telling you which drive it was meant to replace..

--
George N. White III

Just a final thought….
Ever contemplated about a tiny storage ceph-cluster, each disk connected to an 
R-pi?
No spofs, and easier to maintain and upgrade…


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