Re: System upgrades. Where is the / filesystem?

2024-04-30 Thread Gordon Messmer

On 2024-04-30 10:58 AM, John Pilkington wrote:
(fedoraforum) has a suggestion of trimming the journalctl log, but 
neither that nor any other space-clearing actions that I have tried 
has made any difference.



Have you made snapshots of your system volume, or installed any 
applications that might create snapshots (something like timeshift or 
snapper)?


If your filesystem has snapshots, deleting files will not free up space 
until you also remove the snapshots that contain those files.

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Re: Function Key becomes permanently pressed after a couple of minutes after boot (temporary fix: reboot)

2023-12-21 Thread Gordon Messmer

You may have pressed Fn+Esc together, which activates Fn lock.

https://community.frame.work/t/swap-function-multimedia-keys-by-default/12856/10
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Re: Thunderbird 115 FC 38

2023-09-27 Thread Gordon Messmer

On 2023-09-23 10:45, steven stern wrote:
I see that Thunderbird 115.2 is in koji, but it looks like it has not 
been build for Fedora 38. Is that coming?


https://koji.fedoraproject.org/koji/packageinfo?packageID=39
https://i.imgur.com/bKEMxjt.png 



I would probably ask that question in this BZ: 
https://bugzilla.redhat.com/show_bug.cgi?id=2240134


FESCo approved an exception to the stable update policy: 
https://pagure.io/fesco/issue/3050


And the f38 branch in git has been updated: 
https://src.fedoraproject.org/rpms/thunderbird/tree/f38


As far as I can tell, Mozilla has stopped publishing security updates 
for the 102 series, so I don't think there's any grounds to object to 
updating to 115 at this point: 
https://www.thunderbird.net/en-US/thunderbird/releases/

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Re: memtest86+ seems to do nothing.

2023-03-16 Thread Gordon Messmer

On 2023-03-15 10:40, Michael D. Setzer II via users wrote:

The Fedora memtest86+-5.31 is broken and they have
been informed of how to get the newer 6.10 version to
work, but have done nothing.



I don't think that's fair to the maintainers.  There hasn't been a 
memory test application (neither memtest86+ nor pcmemtest) that 
supported Secure Boot signing until memtest86+ 6.10, which was released 
on Feb 3.  Getting support into the Fedora boot media is going to be 
more work than merely rebuilding a new version.

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Re: is root realy root ?

2023-01-22 Thread Gordon Messmer

On 2023-01-21 15:37, Jeffrey Walton wrote:

chown: changing ownership of '/root/.cache/doc': Operation not permitted


It sounds like selinux.



If the problem were SELinux, the system would report "permission denied" 
and not "operation not permitted".  You can verify this with a little 
bit of roundabout testing.  Open two terminals and start "root" sessions 
in both.


You won't be able to start a confined shell with type sshd_t if the 
system is enforcing, but you won't be able to test the behavior of the 
policy while it's permissive, so...


setenforce permissive # In the first shell
runcon system_u:system_r:sshd_t:s0-s0:c0.c1023 /bin/sh # In the second shell
setenforce enforcing # In the first shell, again
# Now, in the second shell, you can test...
sh-5.2# touch foo
sh: child setpgid (83679 to 83679): Permission denied
touch: cannot touch 'foo': Permission denied


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Re: kernel bug? listening on same port with IPv4 and IPv6

2023-01-08 Thread Gordon Messmer

On 2023-01-08 08:14, Sjoerd Mullender wrote:


and see the difference in behavior.  When using "all", the second 
round (IPv4) says that bind returns 1 unexpectedly, and the port is 
also unexpected.  When using "localhost", both IPv6 and IPv4 succeed 
and listen to the same port, but using two different sockets internally.


The behavior for the "all" case is different with the older kernel 
6.0.15-300.fc37.x86_64 where bind will say "Address already in use". 



I think I see what you're saying, now.  In your initial message, I 
thought you were saying that older kernels would let you bind to the 
same port on IPv4, but your example code shows that the system errors, 
"bind: Address already in use", which is what I'd expected.


I haven't reverted this commit (included in 6.0.16) to verify that it's 
the problem, but it *does* look kind of suspicious:


https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/net/ipv6/af_inet6.c?id=7a7160edf1bfde25422262fb26851cef65f695d3

If possible, I'd revert that one change from 6.0.16.  If it restores the 
expected behavior, you can file a bug with very specific information 
about the cause.

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Re: kernel bug? listening on same port with IPv4 and IPv6

2023-01-06 Thread Gordon Messmer

On 2023-01-06 06:17, Sjoerd Mullender wrote:
I have a program that is supposed to listen to the same port on both 
IPv4 and IPv6 sockets.  In the past, what it did, was basically: 
create new socket for IPv6, set option IPV6_V6ONLY to off, bind, 
listen; then create a new socket for IPv4, and also bind and listen.



Do you have sample code that demonstrates this process?

I'm confused by your description, because setting IPV6_V6ONLY to 0 with 
setsockopt should result in a socket that's bound to a port that accepts 
both IPv4 and IPv6 connections.  You shouldn't have ever been able to 
bind to that port in IPv4 in the past.


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Re: Are Meta/Facebook servers using Fedora Linux?

2022-12-06 Thread Gordon Messmer

On 2022-12-06 04:55, Turritopsis Dohrnii Teo En Ming wrote:

 From the above quotes, I thought that Meta/Facebook servers are using
Fedora Linux, or at least Linux servers.



As far as I know, the answer is "No".  Their production platform is 
based on CentOS Stream.


https://www.youtube.com/watch?v=cA_Nd3crBuA

The presentation as a whole is worth watching for a view of practices in 
a large production environment.  The migration to Stream is mentioned 
around 23:30.


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Re: Runing Android apps?

2022-07-01 Thread Gordon Messmer

On 7/1/22 00:13, Frederic Muller wrote:


I was wondering if there was any simpler way to run just 1 'single' 
android app on F36? Note that the app uses BT to gather one external 
device information, in case that matters. 



There's ongoing work to bring waydroid to Fedora: 
https://bugzilla.redhat.com/show_bug.cgi?id=1455411


...including a copr that might be usable: 
https://copr.fedorainfracloud.org/coprs/aleasto/waydroid/

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Re: auto unlock encrypted disks using clevis/tang works for ext4 but not btrfs?

2022-06-10 Thread Gordon Messmer

On 6/10/22 11:29, Barry Scott wrote:

What logs do I need to collect?



I'd start by looking at "journalctl -b0"

You might be able to find clevis information in there.

Another interesting item might be to run "ls -l /boot/initramfs-$(uname 
-r).img > initramfs-$(hostname)" and to diff the two resulting files.

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Re: Problems with Borg backup on F36

2022-05-20 Thread Gordon Messmer

On 5/20/22 14:15, Patrick O'Callaghan wrote:

Thanks, but it's a desktop and the issue appears to be related to the
latest version of Borg. The check errors happen across all of my
existing backups, not just one.



As a result of deduplication, it's expected that all (or most) of your 
backups will share blocks of data.  If there's corruption in the backup 
data, it is not surprising that it would affect all of them and not just 
one.


Don't assume that the current version is broken.  You've dismissed 
https://github.com/borgbackup/borg/issues/6687 several times for dubious 
reasons.  The conversation there included numerous troubleshooting 
steps, and I suggest you go through all of them.  If you still have 
problems, collect a log of all of the commands you've run and the output 
they provided, and add that to a bug report.

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Re: Problems with Borg backup on F36

2022-05-20 Thread Gordon Messmer

On 5/16/22 08:45, Patrick O'Callaghan wrote:

I updated to F36 a few days ago and everything seemed to go smoothly
until I noticed my regular nightly backups were failing. I use
Borgbackup and the configuration has been stable for a long time with
no problems. The actual backup does seem to succeed, but Borg runs a
post-backup repository check that is now failing,



That might be an indication that one of your backups was interrupted.  
If you're running borg on a laptop, you should take steps to make sure 
that the system will not suspend in the middle of a backup.  I recommend 
using systemd-inhibit to prevent system suspending:


https://github.com/gordonmessmer/ansible-borg-client/
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Re: SSH hangs when including command to execute

2022-05-07 Thread Gordon Messmer

On 5/7/22 12:45, C Linus Hicks wrote:

the remote machines are derivitives of RHEL 6,7,8



You may be running in to a known issue (BZ#1972266), if ForwardX11 is 
set in ssh_config on the client and X11Forwarding yes is set in 
sshd_config on the remote host.


Check the server for /etc/profile.d/ssh-x-forwarding.sh.  If that file 
is present, try removing or renaming it, and determine whether the 
problem is still present.


If that isn't the issue, it would probably be useful for you to provide 
the full output of:


ssh -v  "set -x; pwd; exit"
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Re: to wayland or not?

2022-04-26 Thread Gordon Messmer
Wayland desktop sessions run Xwayland, which is an X11 server that 
displays to a wayland display, for compatibility with applications that 
don't natively support wayland.

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Re: ssh resolving with systemd.resolved

2022-04-24 Thread Gordon Messmer

On 4/24/22 10:00, Michael Hennebry wrote:

What would a systemd evangelist suggest as a minimal workaround?



systemctl disable systemd-resolved && systemctl stop systemd-resolved
rm /etc/resolv.conf
systemctl restart NetworkManager

As documented in the original change proposal:
https://fedoraproject.org/wiki/Changes/systemd-resolved
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Re: ssh infested by systemd.resolved

2022-04-17 Thread Gordon Messmer

On 4/17/22 12:26, Sam Varshavchik wrote:
I don't see where it's picking this up. The only thing I can think of 
is nsswitch.conf, but the "hosts" entry there is identical to what's 
on another, un-upgraded system. 



Maybe remove the "resolve" entry from the hosts line:

$ rpm -qf /lib64/libnss_resolve*
systemd-libs-250.3-8.fc36.x86_64
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Re: glibc hwcaps and clear linux vs fedora

2022-04-11 Thread Gordon Messmer

On 4/11/22 02:01, old sixpack13 wrote:

how sick must one (=> @poc) be to repeatingly kick users asking for help 
against their head ?



This is not being courteous.

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Re: glibc hwcaps and clear linux vs fedora

2022-04-10 Thread Gordon Messmer

On 4/9/22 14:41, Reon Beon via users wrote:

This is petty much the only thing that keep people running Clear Linux over 
Fedora, no?



It would promote more meaningful discussion if you provided more context 
for your question.  If you mean, is that the only reason that Clear 
Linux performs better than Fedora for benchmark workloads, I'd answer: 
No, probably not.


Fedora discussed optimized library versions selected via hwcaps, on the 
devel list last year:


https://lists.fedoraproject.org/archives/list/de...@lists.fedoraproject.org/thread/5EJ7T27EBBSJKMDY2MKCKR5ZIRBCKPJ6/

But even if some libraries were aggressively optimized, there are other 
settings and patches that Clear Linux uses which I don't think Fedora 
would consider:


https://docs.01.org/clearlinux/latest/guides/clear/performance.html

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Re: glibc hwcaps and clear linux vs fedora

2022-04-10 Thread Gordon Messmer
I would like to ask everyone involved in this thread to observe the 
mailing list guidelines and be courteous to each other:


https://fedoraproject.org/wiki/Mailing_list_guidelines#Be_Courteous
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Re: WSL

2022-04-08 Thread Gordon Messmer

On 4/5/22 00:14, Patrick Dupre wrote:,

Does somebody have experience with fedora and WSL?
https://docs.microsoft.com/en-us/windows/wsl/install



It's reasonably straightforward to install an unpackaged distribution, 
you just need a tarball of the distribution.  And lots of those are 
available for use with podman (or docker).  For example I can pull a 
container image and then save that to an archive:


    podman pull fedora:35
    podman save fedora:35 -o fedora35.tar

Inside "fedora35.tar" is another tar archive, which is the base layer 
for the fedora:35 image.  Copy fedora35.tar to your Windows system, and 
extract it there.  Now you can import that and then run it:


    wsl --import fedora35 
c:\Users\\AppData\Local\Packages\Fedora35 
c:\Users\\Downloads\fedora35\*.tar

    wsl -d fedora35

You'll usually want to set a registry key to change the default user... 
(HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Lxss\{ 
assigned GUID })


It's not click and run by any means, but it's feasible.

https://docs.microsoft.com/en-us/windows/wsl/use-custom-distro
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Re: network mystery!!??

2022-04-05 Thread Gordon Messmer
If I'm reading this thread correctly, your original setup was as follows:

-
 - 108.90.204.76/24 -> gw: 108.90.204.1
/
arris BGW210-700
\
 - 192.168.1.254/24 (Blackhole-ATT WiFi network)
 - 108.220.213.126/29

 - 108.220.213.121/29 -> gw: 108.220.213.126
/
netgear nighthawk
\
 - 10.0.0.1/24

 - 10.0.0.101/24 -> gw: 10.0.0.1
/
ws.linuxlighthouse.com
-

That configuration is completely reasonable.  You shouldn't need to
try to use bridge mode, or IP Passthrough, or any other rewiring of
the network.

> 10.0.0.101ws.linuxlighthouse.com (internal IP) 2 packets 
> transmitted, 2 received, 0% packet loss, time 1033ms

You initially provided some address ping information, but didn't
specify which device was gathering that information.  That may be
relevant information, because only a device in the 10.0.0.0/24 network
should have been able to reach all of those addresses.  I'm assuming
that the information was gathered from within 10.0.0.0/24.

> consider the below traceroute, it reports hops up to 108.90.204.76, stopping 
> there instead of doing one more hop

For problems of this sort, I generally consider several possibilities:
1: The Arris firewall is not allowing traffic into your network from the public.
2: The Netgear firewall is not allowing ICMP (ping) from the public.
3: The Netgear is configured to redirect (forward) 108.220.213.121 to
your server, but the NAT isn't working correctly.
4: Your Arris modem and Nighthawk router both have addresses in
108.220.213.120/29 set up, but ATT isn't routing that network to you,
and outbound traffic is NATed by the Arris modem.

I think we can discount #1 and #4, since we can ping 108.220.213.126
from the public, but we can also test those things:

You should be able to connect a laptop directly to the Arris modem,
and configure the laptop with the IP address 108.220.213.122, netmask
255.255.255.248, gateway 108.220.213.126. (DNS: 8.8.8.8 if you don't
have another preference.)  Once connected, the laptop should have
public internet access.  You should be able to access
https://www.whatismyip.com/, and your public IPv4 address as seen by
that page should be 108.220.213.122.  Someone outside of your network
should be able to ping and traceroute to that address.

#2 and #3 are harder to test, but if you can verify that another
device is fully functional on another address, then you can at least
focus your attention on the Nighthawk configuration.  At that point,
I'd turn off any IP forwarding or DNAT settings you'd configured on
the Nighthawk, and try to turn off the firewall.  With the firewall
off, you should be able to ping and tracroute to the Nighthawk from
outside.  Next you can try to get any port forwards working, and
finally you can turn the firewall back on and see if NAT still works.
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Re: network mystery!!??

2022-04-04 Thread Gordon Messmer

On 4/4/22 00:50, Samuel Sieb wrote:
If you connect the Nighthawk to the BGW210 using one of the LAN ports 
on the Nighthawk, everything would be on the 192.168.1.x subnet and 
you could use the same SSID on both devices.  You would need to 
disable the DHCP server on the Nighthawk and most likely need to give 
the Nighthawk a static IP address on the LAN because they usually 
don't support getting it from DHCP. 



At that point the Nighthawk would be just another switch, which doesn't 
seem helpful *or* secure.


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Re: Fedora Laptop?

2022-03-14 Thread Gordon Messmer

On 3/14/22 14:47, Matthew Miller wrote:

On Fri, Mar 11, 2022 at 05:21:36PM -0500, Jonathan Billings wrote:

I also have 2 firmware updates which don't seem to install.

I’ve seen this happen if you have the AMT disabled in the BIOS. You can’t
install the BIOS firmware updates without it.

Also needs SecureBoot turned off, AIUI (which is unfortunate!).



I'm not *quite* sure what you mean by that.  I don't own any Lenovo 
laptops, but my friend Ian does.  I asked him, and he confirmed that 
fwupdmgr can update firmware as expected with Secure Boot on.  I'd be 
pretty surprised to learn of any systems that couldn't.

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Re: If venv is a reality can I build a program python wit it for more security ?

2022-02-24 Thread Gordon Messmer

On 2/24/22 02:33, Dorian ROSSE wrote:
If venv is a reality can I build a program python wit it for more 
security ?



No, venv won't give you any additional security if a python module has 
malicious code.


If you don't fully trust a python module but you want to run it anyway, 
consider building a container image.  You can install the required 
python modules in the image, and then run them the container mostly 
isolated from the rest of your system.  If it needs data files (and I 
expect that it does), then you can mount a single directory as a volume 
in the container so that the python modules have access to those files 
but nothing else on your system.


Or, if you don't trust the isolation of containers, then use a virtual 
machine.

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Re: does i am able to build a python program for rpm using '''python setup.py bdist_rpm''' with dependency python in virtual using '''python3 -m pip install --user env venv '''

2022-02-23 Thread Gordon Messmer

On 2/22/22 03:01, Dorian ROSSE wrote:

Can I create with this line of command :
'''python3 -m pip install env venv ''' then the other line of 
command,



The package generated by bdist_rpm should be the same regardless of 
whether or not you install the package in a venv.


Consider using the "pyp2rpm" program if bdist_rpm does not give you 
desirable results.

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Re: does i am able to build a python program for rpm using '''python setup.py bdist_rpm''' with dependency python in virtual using '''python3 -m pip install --user env venv '''

2022-02-20 Thread Gordon Messmer

On 2/20/22 01:39, Dorian ROSSE wrote:
does i am able to build a python program for rpm using '''python 
setup.py bdist_rpm''' with dependency python in virtual using 
'''python3 -m pip install --user env venv ''',



I think those two things are mostly unrelated.  The rpm created by 
bdist_rpm will target the system installation of Python, not a user's 
venv.  If you want to create something that can be installed in a venv 
by pip, I believe you'd want to create a "wheel".

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Re: Kernel crash every day at 6:30am

2022-02-13 Thread Gordon Messmer

On 2/12/22 14:59, Alex wrote:

Here's a bit of the kernel message from dmesg
[ cut here ]
WARNING: CPU: 4 PID: 633983 at kernel/exit.c:739 do_exit+0x37/0xa90
general protection fault, probably for non-canonical address
0xcc2a8cfcb62a56a1:  [#1] SMP PTI
CPU: 4 PID: 633983 Comm: rsync Not tainted 5.14.18-200.fc34.x86_64 #1
Hardware name: To be filled by O.E.M. To be filled by O.E.M./P8B-M
Series, BIOS 6801 05/07/2018
RIP: 0010:__bio_crypt_clone+0x28/0x60



bio_crypt_clone suggests something wrong in an encrypted block device.  
Maybe corrupt data that rsync traverses during the backup?


What does the output of "lsblk" look like for your system?  What about 
"lvs"?

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Re: Bad workloads for RAID0?

2022-02-10 Thread Gordon Messmer

On 2/10/22 11:19, John Mellor wrote:
SSDs have no appreciable seek time and have much faster read rates 
that spinning rust.  Depending upon how much onboard RAM cache they 
provide (some even provide no cache), you may also see considerably 
better burst write speed, although sustained write speeds are 
generally no better than a disk.



Hard disk drives usually write sequentially at around 130MB/s. I've seen 
QLC drives that aren't better than HDD, but unless you're buying 
literally the slowest drives on the market, SSDs will probably write 
*much* faster than HDD.



P.S: Why are you using a RAID-0 array?  You have no redundancy, higher 
software complexity, somewhat better read speeds and much slower write 
speeds



Most RAID levels will have slower writes than single disks for some 
workload (usually small random writes on arrays with small numbers of 
members).  RAID0 is the only level I'd expect to be faster than a single 
disk for all workloads.


When would you see much slower write speeds with RAID0?
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Re: Bad workloads for RAID0?

2022-02-10 Thread Gordon Messmer

On 2/10/22 08:35, Thomas Cameron wrote:
RAID0 is great for increasing throughput, but it is the most risky 
RAID configuration possible. I would never run /home on RAID0 unless I 
was doing something like two drives in RAID0 but doing nightly backups 
to a third drive in case my RAID0 volume broke. You're flirting with 
disaster running /home on RAID0. 



As we often say, RAID isn't backup.  Or in other words, RAID6 is 
(essentially) no safer than RAID0 if you don't have backups.  I would 
never run /home on any storage configuration without regular backups, 
either.  From that perspective, it seems odd to warn someone about 
RAID0.  Non-redundant arrays increase the risk of down time, but 
recovery from data loss is an orthogonal concern.

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Re: Bad workloads for RAID0?

2022-02-10 Thread Gordon Messmer

On 2/10/22 08:11, Matti Pulkkinen wrote:

TL;DR are there particular workloads that suffer from having to access
a RAID0 array?



If uptime is excluded as a factor, then I'm not aware of any.



I've currently got my /home partition in a BTRFS RAID0 array with two 1
TB mechanical drives, and I'm considering getting SSDs for /home
instead. I could get one 2 TB SSD and be happy with it, but I could
instead get two 1 TB SSDs and make a RAID0 array again. The latter
option would of course get me better overall throughput



It *probably* will, but I think there are conditions under which it 
wouldn't.  One SSD might be able to saturate your controller for reads.  
Interleaved writes will probably improve, but that might depend on how 
many cells are in each SSD, and how the SSD's controller spreads writes 
among them.  If you're looking at QLC drives, it might depend somewhat 
on whether the 1TB drives together have more SLC cells than the 2TB 
drive has.


Which is to say that if you haven't actually tested *your workload* on 
it, then there's some risk.  You're probably not going to save much on 
the purchase, you're going to have slightly less reliable storage, and 
there's a small chance that performance won't be much better than a 
single drive.

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Re: resynchronize anacron

2022-02-10 Thread Gordon Messmer

On 2/10/22 12:41, Patrick Dupre wrote:

How can I have it running every Saturday ?



Change the "last run date" in /var/spool/anacron/cron.weekly.

(For reference: This is indicated by the "FILES" section of the 
anacron(8) man page.)

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Re: why are / and /home the same filesystem?

2022-02-08 Thread Gordon Messmer

On 2/8/22 04:56, Peter Boy wrote:

The quote describes a situation which has gone for more of a decade now. Since we have 
LVM (when got that part of the Linux kernel? kernel 2.6? 2004 or so? Don’t know exactly), 
no one would partition a hard disk along file system subdirectories. You create logical 
volumes instead, which can easily "changed without a reinstallation“ and space for 
any logical volume "can be expanded or restricted on the fly“. The latter even 
easier with „thin provisioning“.



Expanded, sure.  But restricted?  I don't think that's as clear for 
LVM.  IIRC, XFS can't be shrunk at all, and ext4 can only be shrunk 
offline.  Users should be able to create, destroy, or resize qgroups 
online for btrfs.


I'm unclear on what you mean is easier with thin provisioning; can you 
clarify that?


I may be naive here, as I use writable snapshots in LVM but not thin 
provisioning specifically: my impression was that users needed to be 
very careful not to allow the volume group to run out of space when 
using either of these, because filesystems generally don't deal well 
with the unexpected write failures that occur when LVM has no more 
extents to allocate.  btrfs' free space handling can be surprising to 
users, and statfs() might suggest there is more space available than 
there is, but it's not the sort of thing that can corrupt the filesystem 
itself.

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Re: why are / and /home the same filesystem?

2022-02-07 Thread Gordon Messmer

On 2/7/22 14:12, jdow wrote:
Ah, fix it so that when the system logs run away you can also destroy 
user data that has not been written yet. 



That's... not really how POSIX works.  And most logs on Fedora should be 
in the journal at this point, has a maximum size.



Gd planning. Why bother with defining a separate /home at all? It 
gives a false sense of security.



I don't see how there's any less "security" for /home now than there was 
before.  It's not like the old system was immune from user processes 
"running away" and filling the filesystem.  The system has never held 
space in reserve for non-root users.


There are a long list of good reasons to make /home a subvolume, 
though.  It's groundwork for system snapshots that can be rolled back in 
the event of an update failure.  It's easier to preserve /home but 
perform a clean install for everything else. Replication (possibly as a 
backup mechanism) requires subvolume as a boundary, and separating / and 
/home for that is desirable most of the time.

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Re: why are / and /home the same filesystem?

2022-02-07 Thread Gordon Messmer

On 2/6/22 08:17, Paolo Galtieri wrote:

so why are / and /home the same device?



To the question of "why," I'd think the answer is in the discussion held 
in the devel@ mailing list linked below. Generally, sharing the storage 
pool in order to avoid running out of space in one location when there 
was still space left in the pool due to "bad" partitioning choices was 
seen as a benefit.


https://lists.fedoraproject.org/archives/list/de...@lists.fedoraproject.org/thread/IOPR2R3SCKOFUCKPLMS4MDD5664SGQFR/
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Re: NFS client names not mapping

2022-01-31 Thread Gordon Messmer

On 1/31/22 06:27, Ed Greshko wrote:
I needed no such change to my F35's host file for it to function 
properly.  Probably will never find out why
yours did. 



Probably because the server configuration was modified.  Robert reported:

> On the server:
> [plugh-3g ~]# cat /sys/module/nfsd/parameters/nfs4_disable_idmapping
> N

The default setting is 'Y' (in which case idmap is disabled for NFSv4 
with sec=sys).


If idmapping is enabled for NFSv4 with sec=sys, then there are several 
ways to match domains, and one of them needs to be used.

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Re: NFS client names not mapping

2022-01-29 Thread Gordon Messmer

On 1/29/22 20:36, Robert Nichols wrote:
If I could find any way to set the client's domain name, I would. 
Nothing I try has any effect on the domain name.
When I try to set a FQDN with hostnamectl, then "hostnamectl" (with no 
arguments) shows that FQDN as the static hostname, but "hostname 
--fqdn" responds with "hostname: Name or service not known", and 
"mount -t nfs ..." causes the various "... does not map into domain 
'localdomain'" messages to be logged.



I *think* the "name or service not known" message means that the 
hostname you've set isn't in /etc/hosts, which is the normal config.  
That doesn't mean your domain name isn't being set.


I also think that your client's domain name is "local", while your NFS 
server's domain name is "localdomain", and you've enabled mapping, which 
is why everything is mapped to "nobody".


So, you've got several problems that aren't necessarily related, and 
aren't influencing the other.


In any case, you should be checking the output of "nfsidmap -d", not 
"hostname --fqdn".




On the server:
[plugh-3g ~]# cat /sys/module/nfsd/parameters/nfs4_disable_idmapping
N



I believe the default is 'Y'.

You should be able to resolve the problem by setting hostnames with 
matching domains on both systems, or setting a domain name in 
/etc/idmapd.conf, or disabling idmapping on both server and client.

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Re: NFS client names not mapping

2022-01-29 Thread Gordon Messmer

On 1/29/22 17:20, Ed Greshko wrote:


In the initial posting by Robert he wrote:
"I have no nfs-idmapd service running"



Right, but on recent kernels, the client doesn't use rpc.idmapd, it uses 
"nfsidmap".  The fact that rpc.idmapd isn't running doesn't really tell 
us anything.



"all users and groups in an NFS mounted filesystem are mapped to "nobody" even though the names and 


numeric IDs are the same on the server and client"

So, I don't know why we're going down this path.

Jan 28 21:19:14 fedora.local nfsidmap[2461]: nss_getpwnam: name 'root@local' does not map into domain 'localdomain' 




Right, that log entry indicates that idmap is being used on his system.  
That might mean that the server doesn't support NFSv4 without idmap.  Or 
it might mean the client was configured to enable idmapping.


Without knowing which, we don't really know the right thing to do, 
except to set the client's domain to match the servers, so that 
idmapping works as expected.



With a test system following those first two statement, I've go no 
problems. 



I would imagine that idmapping is disabled on your client (and supported 
by your server).


Check the value of /sys/module/nfsd/parameters/nfs4_disable_idmapping on 
your NFS server, if it's Linux.  And check the value of 
/sys/module/nfs/parameters/nfs4_disable_idmapping on the client.

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Re: NFS client names not mapping

2022-01-29 Thread Gordon Messmer

On 1/28/22 23:32, Ed Greshko wrote:
But I do have nfs-idmapd.service with "Domain = localdomain" in its 
configuration file.
If I change that to "Domain = local" and restart nfs-idmapd.service I 
do get


[root@fedora ~]# nfsidmap -d
local

But everything works no matter what the setting 



https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=074b1d12fe2500d7d453902f9266e6674b30d84c

idmapping on NFSv4 is disabled by default when sec=sys (but will be 
enabled if the server doesn't support that mode).

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Re: NFS client names not mapping

2022-01-28 Thread Gordon Messmer

On 1/28/22 06:08, Robert Nichols wrote:
Where does Fedora get its domain name? When I type "hostname --fqdn" 
I get "hostname: Name or service not known". The CentOS 8 VM 
apparently gets its domain name from the /etc/hostname file, which 
contains "cent9-vm.local". This does not appear to work in Fedora 35.
If I put a fqdn in /etc/hostname, that will show up as the static 
hostname, but "domainname" still returns "(none)" and everything else 
is the same. 



Set the system hostname using "hostnamectl hostname .local".  
Once you do, hostnamectl, domainname and most importantly "nfsidmap -d" 
should all output the expected domain.  In the latter case, that will be 
"local", and at that point NFS4 should map names correctly.

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Re: NFS client names not mapping

2022-01-26 Thread Gordon Messmer

On 1/25/22 08:35, Robert Nichols wrote:
In a Fedora 35 VM, all users and groups in an NFS mounted filesystem 
are mapped to "nobody" even though the names and numeric IDs are the 
same on the server and client. The messages logged are of the form:


 "name '@local' does not map into domain 'localdomain'"



What does the entry for that filesystem in /proc/mounts look like?  It 
should have negotiated mount options that shed some light.


Maybe add the "sec=sys" mount option to the client.
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Re: Fedora 35 and Intel Iris XE Graphics

2022-01-22 Thread Gordon Messmer

On 1/12/22 12:04, Gordon Messmer wrote:

On 1/12/22 10:33, Sbob wrote:
Does anyone know if Fedora 35 works well with the Intel Iris XE 
Graphics? 


I have a Dell XPS 13 9310 with Iris XE.  Initially, there were 
problems, mostly observed as the screen not updating some regions.  I 
worked around that by adding "i915.enable_psr=0" to the kernel command 
line.  I keep meaning to remove that option to see if there are still 
issues, but I haven't yet.



This weekend I turned that option off on my laptop, and things seem fine.

*However*: This laptop, running Fedora, seemed fine with some kernel 
versions 5-6 months ago; kernel updates would work or not work 
unpredictably at that time.  It's possible that situation still exists 
and I just happen to be on a good kernel version.


Coincidentally, browsing reddit linux-related subs today, I've seen 
numerous questions about Intel XE graphics that appear to be PSR issues.

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Re: SSL Level?

2022-01-22 Thread Gordon Messmer

On 1/22/22 12:18, a...@clueserver.org wrote:

The script for ssl in nmap does not deal with ssl v3.



At this point, if you see anything less than TLS 1.2, you should treat 
it as a bug.

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Re: SSL Level?

2022-01-22 Thread Gordon Messmer

On 1/22/22 12:13, ToddAndMargo via users wrote:

Is there a way to get one of those fancy tool
in nmap to tell me the "level" (version)
of SSL and/or TLS that a web site is using? 



You're on the right track, and if you'd done a web search for "nmap scan 
tls", you'd probably have found a useful answer:


https://www.google.com/search?q=nmap+scan+tls

The "ssl-enum-ciphers" script will enumerate TLS versions and cipher 
sets for each version.

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Re: Fedora 35 and Intel Iris XE Graphics

2022-01-12 Thread Gordon Messmer

On 1/12/22 10:33, Sbob wrote:
Does anyone know if Fedora 35 works well with the Intel Iris XE Graphics? 



I have a Dell XPS 13 9310 with Iris XE.  Initially, there were problems, 
mostly observed as the screen not updating some regions.  I worked 
around that by adding "i915.enable_psr=0" to the kernel command line.  I 
keep meaning to remove that option to see if there are still issues, but 
I haven't yet.

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Re: movie screen shot?

2022-01-03 Thread Gordon Messmer

On 1/2/22 23:32, ToddAndMargo via users wrote:

I need to send a tech support guy a movie of what
is happening and what I am doing with their program.
Is there a way to make a movie of an area on my
screen? 



https://opensource.com/article/19/8/record-screencasts-gnome3

If recording the entire screen is an option, GNOME has this 
functionality built-in.

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Re: The definitive guide to replacing a disk in raid1?

2021-12-24 Thread Gordon Messmer

On 12/24/21 14:29, Cameron Simpson wrote:

On 24Dec2021 12:09, Gordon Messmer  wrote:

Additionally, it should be performed *after* adding the replacement
disk to the RAID set, not before.

Is that true? My (blurry) mental model for this issue is that the boot
block isn't in the area maintained by the RAID, which is also the reason
that RAID1 doesn't automatically make all drives in the set bootable.
That suggests that you could do this before or after.



Right, the boot block *is* in a non-RAID area (the MBR) for the standard 
config, which is partitions in RAID sets.  But grub2 still has to map 
the Linux device names to BIOS devices for use during boot, and the way 
that I remember it (I haven't managed an mdraid system on BIOS in a 
*long* time), the device needed to be a member when grub2-install was 
run in order for the resulting grub2 image to have a complete view of 
the places it might find its configuration files, etc.


If I'm wrong, or if things have changed since I last set up a BIOS 
system with mdraid and GRUB2, I hope someone corrects me.  :)




(Note that this step is not required and should not be performed on
UEFI systems, only BIOS.)

This also I'd like explained. Is this because the UEFI stuff _will_ be
in the area mirrored by the RAID?



On UEFI systems, the firmware doesn't load a bootloader out of a boot 
block, it has a path to the boot loader in a FAT filesystem. Rather than 
putting a bootloader in a static location where the BIOS will look (as 
grub2-install does on BIOS), UEFI systems are given a location where 
they should look using efibootmgr.


But beyond grub2-install being unnecessary on UEFI, the standard effect 
of running it on a UEFI system is to rebuild the grub2 EFI image, and 
that will break Secure Boot systems because your efi image is no longer 
signed.  Looking at bz#1917213, it seems like grub2-install will (as of 
some very recent version) refuse to run in order to not break the image.

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Re: The definitive guide to replacing a disk in raid1?

2021-12-24 Thread Gordon Messmer

On 12/24/21 06:38, cen wrote:

# remove raid metadata
mdadm --zero-superblock /dev/sdd1



Assuming the new disk hasn't been used, that step is probably unnecessary.



# install bootloader on new disk
grub2-install /dev/sdd1



That looks wrong, it should probably be 'grub2-install /dev/sdd'.  
Additionally, it should be performed *after* adding the replacement disk 
to the RAID set, not before.


(Note that this step is not required and should not be performed on UEFI 
systems, only BIOS.)


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Re: LUKS on shutdown.

2021-12-04 Thread Gordon Messmer

On 12/4/21 19:15, murph nj wrote:



Got another opportunity, redirected lsof /home and lsof /other to 
files, and there was no output.



Interesting... Is there an error if you try to unmount those yourself?



I did get output from systemctl-list-jobs (edited lightly)

JOB  UNIT                                  TYPE  STATE
6039 systemd-cryptsetup@luks\x2dshome.service          stop  running
6068 systemd-cryptsetup@luks\x2de8.service stop  running
6055 systemd-cryptsetup@luks\x2dsother.service          stop  running
6047 systemd-cryptsetup@luks\x2d23.service stop  running



Home and other make sense given your earlier comment, but what are the 
other two?  Do the number of entries in /etc/crypttab match the number 
of LUKS partitions?  (What's in /proc/mounts during the failed shutdown?)

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Re: LUKS on shutdown.

2021-12-02 Thread Gordon Messmer

On 12/1/21 18:03, murph nj wrote:


lsof showed nothing that I could see.



Nothing, or nothing interesting?  I'd expect you to at least see the CWD 
of the debug shell.



The stop job rotates between four mounted volumes, and the 
lvm2-monitor.service.



In the past, I've seen lvm2-monitor behave badly in reaction to logical 
volumes (block devices) used for VMs that used LVM internally.  Do you 
have any logical volumes that aren't used for those four mounted volumes?



systemctl status doesn't seem to display much, but the stop job (and 
cylon eye) keep overwriting everything, making it really hard to see 
the output.



Several suggestions: Chris suggested that you check "systemctl 
list-jobs".  The contents of /proc/mounts might be interesting. I'd run 
"lsof /path" where path is the longest mount point path of the volumes 
still listed in /proc/mounts.

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Re: disk full

2021-11-30 Thread Gordon Messmer
On Mon, Nov 29, 2021 at 11:06 AM Patrick Dupre  wrote:
> 631500  /var/tmp/flatpak-cache-LU5PD1
> 6326584 /var/tmp

This seems like a really good place to start cleaning up.  You'e got
6GB used in /var/tmp, much of which might be failed flatpak installs?
https://github.com/flatpak/flatpak/issues/1119

If you don't have any flatpaks running, I *think* it's safe to remove
/var/tmp/flatpak-cache-*
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Re: Message threading on this list

2021-11-25 Thread Gordon Messmer

On 11/25/21 13:46, John Pilkington wrote:


Thank you for that link.  I hadn't been aware of that possibility.  
But I was really thinking of the Hyperkitty display, which appears as 
the archive default.  Having a too-large local mailbox I don't often 
use it, and its multiple endpoints seemed less than ideal. 



In Hyperkitty: click the link that says "show replies by date." It's at 
the end of the first message.

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Re: Message threading on this list

2021-11-25 Thread Gordon Messmer

On 11/23/21 14:06, John Pilkington wrote:
I'm used to reading messages in order of time of arrival.  Threaded 
display in Thunderbird, or the presentation of the archive by 
Hyperkitty, doesn't do this



Right... Hyperkitty also shows messages in threaded mode, where replies 
are grouped in the list next to the message they are a reply *to*.  Both 
of those applications are behaving as intended.


In Thunderbird, you might prefer to "Sort By > Subject" and "Sort By > 
Group by sort".  Or (and perhaps more likely), you'd prefer Conversation 
View:


https://addons.thunderbird.net/en-US/thunderbird/addon/gmail-conversation-view/
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Re: F35: Default audio output device

2021-11-17 Thread Gordon Messmer

On 11/16/21 15:27, Sam Varshavchik wrote:
So, anyone knows how to set the permanent default output device? 



A search for "pipewire set persistent default" brings up a few 
discussions suggesting that pipewire *should* save the default across 
sessions, but that was broken in 0.3.33, and then fixed, and might be 
broken again.

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Re: crontab -e now invokes nano! ARGH!!!

2021-11-16 Thread Gordon Messmer

On 11/16/21 10:18, Robert Moskowitz wrote:

F35 change from F32; may have occurred earlier.



Change in Fedora 33: https://fedoraproject.org/wiki/Changes/UseNanoByDefault


VI was sooo easy to use.   Now I have to learn nano? 



No, now new users don't have to learn to use vim.  You can set whatever 
editor you like for yourself:


echo "EDITOR=vi" >> ~/.bash_profile

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Re: nothing provides libcrypto.so.10()(64bit) needed by viber-16.1.0.37-2.x86_64

2021-11-09 Thread Gordon Messmer

P.S.:

The reason that package isn't included any more is given as the last 
commit message to the package repo, "Retired due to security issues and 
general obsolescence."  Beware that an application that uses OpenSSL 1.0 
relies on unmaintained software that may have security vulnerabilities 
that will never be patched.

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Re: nothing provides libcrypto.so.10()(64bit) needed by viber-16.1.0.37-2.x86_64

2021-11-09 Thread Gordon Messmer

On 11/9/21 01:40, Frederic Muller wrote:
Viber desktop user here and it seems I can't install the latest 
version as I'm getting this message:
nothing provides libcrypto.so.10()(64bit) needed by 
viber-16.1.0.37-2.x86_64 



soversion 10 was provided by OpenSSL 1.0, according to 
https://src.fedoraproject.org/rpms/openssl11/blob/epel7/f/openssl11.spec


So, you'd need an openssl 1.0 package.  The last release to include such 
a package was Fedora 33: 
https://bodhi.fedoraproject.org/updates/?search=compat-openssl10


You can download them here: 
https://dl.fedoraproject.org/pub/fedora/linux/releases/33/Everything/x86_64/os/Packages/c/

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Re: F35 GNOME screen blank doesn't work properly, what component to file under?

2021-11-07 Thread Gordon Messmer

On 11/7/21 17:48, Andre Robatino wrote:

I wasn't expecting that to work, but oddly enough it seems to, since I got 
several incoming emails while away and the display was still off. I'll keep an 
eye on it. Thanks.



Good.  Seems like a usable workaround, though a lock screen notification 
*should* be a short display.  Probably worth checking the GNOME bug list 
to see if the issue is known, and filing a report there if it isn't.

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Re: F35 GNOME screen blank doesn't work properly, what component to file under?

2021-11-07 Thread Gordon Messmer

On 11/7/21 09:15, Andre Robatino wrote:
But if the screen is already blank, any notification from any 
application (Thunderbird email, hexchat alert, dnfdragora updates) 
causes the display to turn back on



What happens if you open the "Notifications" settings panel and turn off 
"lock screen notifications"?


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Re: Does the program llvm break all the hardware or only some of it ?

2021-10-22 Thread Gordon Messmer

On 10/22/21 09:40, Patrick O'Callaghan wrote:

Problem Report.



PR stands for "pull request", which is terminology that comes from the 
use of git.  When someone suggests that you send a PR, they're 
suggesting that you check out the git repo, make the changes you think 
are appropriate, commit them, and ask the owner to accept your changes.  
In the case of GitHub or Pagure, you'll fork the repository first, so 
that you can push your own changes to a place where they're accessible 
to the owner.

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Re: capabilities of softwares on fedora vs on developper's platform

2021-10-20 Thread Gordon Messmer

On 10/20/21 19:08, Gordon Messmer wrote:


It looks like Blender has a build time option to dynamically load 
(i.e., dlopen) the cuda library



As far as I can tell, the CUDA libraries must be present in the build 
environment in order to build that support:



Though I could be wrong... there are some hints in the build log that 
CUDA support is being built (including -DWITH_CUDA -DWITH_CUDA_DYNLOAD 
in some build arguments):


https://kojipkgs.fedoraproject.org//packages/blender/2.93.5/1.fc36/data/logs/x86_64/build.log

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Re: capabilities of softwares on fedora vs on developper's platform

2021-10-20 Thread Gordon Messmer

On 10/20/21 08:32, Richard Shaw wrote:


As Ed and Patrick point out, the difference is probably CUDA. The
CUDA
client libraries are not licensed appropriately for redistribution,
therefore they are not packaged in Fedora.  And since they aren't
packaged, they aren't available in the build root, and it isn't
possible
to build software that uses CUDA.


This is not technically true but may be practically true, my google 
search was not conclusive.


It looks like Blender has a build time option to dynamically load 
(i.e., dlopen) the cuda library



As far as I can tell, the CUDA libraries must be present in the build 
environment in order to build that support:


https://wiki.blender.org/wiki/Building_Blender/CUDA

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Re: capabilities of softwares on fedora vs on developper's platform

2021-10-20 Thread Gordon Messmer

On 10/20/21 01:26, François Patte wrote:
Why this difference? 



As Ed and Patrick point out, the difference is probably CUDA. The CUDA 
client libraries are not licensed appropriately for redistribution, 
therefore they are not packaged in Fedora.  And since they aren't 
packaged, they aren't available in the build root, and it isn't possible 
to build software that uses CUDA.


You could ask NVidia to re-license the CUDA libraries, or you could ask 
Blender developers if they'd consider an OpenCL implementation, since 
OpenCL does appear to be supported in Fedora.  Or, as you've done, you 
can use the not-entirely-Free release that Blender publishes.  I'd 
imagine you could get it from Flathub, too.

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Re: OT: managed switch recommendations

2021-10-18 Thread Gordon Messmer

On 10/18/21 03:33, Frederic Muller wrote:

Was looking for something safe and reliable, 8 or 16 ports, managed



For SOHO installations, I like HPE OfficeConnect 1820 switches (J9979A).
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Re: I need help getting a web page with curl

2021-10-12 Thread Gordon Messmer
... somewhat amusing, you and I have had almost exactly this 
conversation before:


https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org/message/TH2MUWDQHD2T7ZAAOA75K3AYO5W2ZECF/

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Re: I need help getting a web page with curl

2021-10-12 Thread Gordon Messmer

On 10/12/21 02:13, ToddAndMargo via users wrote:


I wrote a program to go out to web pages and check
revisions on about 70 programs that I support at
my customer sites.



Well, I have a couple of questions...  The commands and output that you 
posted earlier pulled some text from a commit message, which isn't a 
revision at all.  It's neither a commit ID, nor a tag, nor a release.  
It's not even guaranteed to be unique.  So, specifically what are you 
looking for?


For most projects, I'd suggest using the API to get the most recent 
release or tag, since they don't release on every commit (and I'm 
guessing that you're not deploying directly from git on each of their 
commits either, but maybe you are).  However, spice-nsis doesn't appear 
to have any of either of those.


So, maybe you mean you're looking for the last commit ID.  If so, you 
can use the "curl | jq" commands that I posted earlier to get those.




With a web browser, you can see the revision
https://gitlab.freedesktop.org/spice/win32/spice-nsis/-/tree/master
but right pane is dynamically generated



Well, the whole page is dynamically generated.  It's more accurate and 
meaningful to say that the commit message and commit ID (the revision) 
come from the API, which you can query with curl and jq.


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Re: I need help getting a web page with curl

2021-10-11 Thread Gordon Messmer

On 10/11/21 18:02, ToddAndMargo via users wrote:

This simulates what I came up with in my actual code:

$ curl --silent 
'https://gitlab.freedesktop.org/spice/win32/spice-nsis/-/commits/master' 
| raku -ne 'my Str $x=slurp(); $x~~s/.*? "rebase on " //; $x~~s/ 
("") .* //; print "$x\n";'


0.164 



You can also:

curl 
https://gitlab.freedesktop.org/api/v4/projects/67/repository/commits | 
jq '.[] | .title'


... but you're pulling information out of a commit message, which is 
really unpredictable.  There's probably a better option, but I don't 
know what to suggest because I don't know why that version is important 
to you.


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Re: I need help getting a web page with curl

2021-10-11 Thread Gordon Messmer
On Sun, Oct 10, 2021 at 5:43 PM ToddAndMargo via users
 wrote:
> Any way to get git to show me the revision
> without downloading the turkey?


Yes, use the API: https://docs.gitlab.com/ee/api/commits.html
The Project ID is listed on the project page (67, in this case):
https://gitlab.freedesktop.org/spice/win32/spice-nsis

Some examples:

Pull one page of commit details in JSON format and reformat it with JQ
for readability:
curl https://gitlab.freedesktop.org/api/v4/projects/67/repository/commits | jq

Pull information on just one commit:
https://gitlab.freedesktop.org/api/v4/projects/67/repository/commits'?per_page=1'
| jq

Use JQ to print the "id" field from one commit:
curl 
https://gitlab.freedesktop.org/api/v4/projects/67/repository/commits'?per_page=1'
| jq '.[] | .id'
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Re: What CPU for qemu-kvm and Windows 11

2021-10-07 Thread Gordon Messmer

On 10/7/21 05:16, Patrick O'Callaghan wrote:

That's not possible, because QEMU doesn't emulate the CPU.  The host
CPU
that you report to the guest VM.

In fact QEMU can emulate the CPU,



I thought it was clear that we were discussing qemu in the context of 
KVM, since it was in the subject, and I didn't have to literally spell 
out "qemu doesn't emulate the CPU when used with Linux KVM."

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Re: What CPU for qemu-kvm and Windows 11

2021-10-06 Thread Gordon Messmer

On 10/5/21 12:16, ToddAndMargo via users wrote:

My host's cpu is not supported.   I was hoping for a
fake CPU (there are about 20 of them to choose from)
would do the trick. 



That's not possible, because QEMU doesn't emulate the CPU.  The host CPU 
must support all of the instructions that would be present in the CPU 
that you report to the guest VM.


The reason that the CPU is an option and not directly copied from the 
host CPU is that guests might migrate from one physical host to another, 
and they may not have precisely the same CPU (and therefore, not 
precisely the same set of instructions).  In order to make that more 
reliable, you can select a CPU whose features are present in all of the 
hosts that might run a guest, and that guest is expected to limit itself 
to the instruction set in the CPU you've selected.


So, the CPU option allows you to select a less capable CPU than the one 
in your host.  It does not allow you to select a newer, more capable CPU.

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Re: Mat: how do I an a fourth menu?

2021-10-04 Thread Gordon Messmer

On 10/4/21 00:30, ToddAndMargo via users wrote:


I have three menus on my launcher: Applications,
Places, System.

How do I create a fourth menu? 



As far as I know: you would need to define a new extension.  The 
simplest one that I'm aware of is the Places extension, so that's 
probably a good one to review for an idea of what's involved:


https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/tree/main/extensions/places-menu

From there, you'll want to read the documentation:

https://wiki.gnome.org/Projects/GnomeShell/Extensions
https://gjs-docs.gnome.org/
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Re: LUKS on shutdown.

2021-09-30 Thread Gordon Messmer

On 9/30/21 12:41, Chris Murphy wrote:

Seems likely to me some service is not quitting properly, preventing /
from being unmounted



If that were the case, there might be information about an exit failure 
in the log.  On the next boot, "journalctl -b -1" might have useful info.


I also wonder if enabling sysrq and using sysrq+'t' would help determine 
which process is stuck:


https://www.kernel.org/doc/html/latest/admin-guide/sysrq.html

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Re: premature umount

2021-08-26 Thread Gordon Messmer

On 8/25/21 9:26 PM, Samuel Sieb wrote:
You could add a "sync" after the copy and before the "umount". 



https://utcc.utoronto.ca/~cks/space/blog/unix/TheLegendOfSync

We're getting into myths and legends territory.  Running sync before 
umount isn't harmful, but umount will flush any dirty buffers, so it 
isn't necessary.


I'm not able to reproduce the problem described, though I'm running 
Fedora 34.  When I attach a USB drive, it is mounted with the "flush" 
option.  I can copy arbitrarily large file sets to the drive, and the 
"cp" command appears to be nearly synchronous.  The sequence "time cp 
... ; time umount ..." indicates nearly all of the time spent is in the 
cp command and umount requires between .2 and .3 seconds.


What are the indications that the copy operation originally reported was 
incomplete?  Does the "umount" command have any flags?  Are there any 
errors in "dmesg" after the script runs?

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Re: Learning ipv6 quirks

2021-06-23 Thread Gordon Messmer

On 6/22/21 11:54 PM, Ed Greshko wrote:

[root@meimei ~]#  nmap -sS -6 -p 2049 2001:b030:112f:2::53
Starting Nmap 7.80 ( https://nmap.org ) at 2021-06-23 14:47 CST
Nmap scan report for 2001:b030:112f:2::53
Host is up (0.00018s latency).

PORT STATE  SERVICE
2049/tcp closed nfs

Means the firewall is not blocking the port but no service is 
listening on that port 



That's not entirely accurate.  If the firewall action is REJECT rather 
than DROP, you'll see the same output from nmap.  "closed" can mean 
either that the port is not open, or that the firewall is blocking 
access with a REJECT action.


And nmap isn't necessary to establish this, since the logs already 
provided included a "connection refused" response to the IPv6 mount attempt.

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Re: Learning ipv6 quirks

2021-06-22 Thread Gordon Messmer

On 6/22/21 8:55 PM, Robert McBroom via users wrote:

On 6/21/21 11:41 PM, Gordon Messmer wrote:

On 6/21/21 6:17 AM, Robert McBroom via users wrote:
@RobertPC ~]# mount -v -t nfs 
[fd2e:cb3b:f005::ec1]:/mnt/HD/HD_a2/mcstuffy /mnt/mcstuffy

mount.nfs: timeout set for Mon Jun 21 06:42:25 2021
mount.nfs: trying text-based options 
'vers=4.2,addr=fd2e:cb3b:f005::ec1,clientaddr=fd2e:cb3b:f005::ec1'

mount.nfs: mount(2): Connection refused


1: Is the nfs port open on ipv6?  Use "ss -ln | grep :2049" and look 
for a listening port with an IPv6 address, like:

    tcp    LISTEN 0  64 [::]:2049 [::]:*
2: Does your firewall allow access to port 2049 on IPv6?  Use 
"firewall-cmd --list-services" and look for "nfs", or use "ip6tables 
-L" and look for the input chain for your default zone (possibly 
IN_public_allow).


root@MyCloudEX2Ultra ~ # ss -ln | grep :2049
-sh: ss: not found



In that case you probably only have busybox's netstat, and I don't know 
what flags it supports.  Try "netstat -tln" and if that doesn't work 
maybe "netstat -ln" to get a list of the listening ports.




root@MyCloudEX2Ultra ~ # ip6tables -L
Chain INPUT (policy ACCEPT)
target prot opt source   destination
   tcp  anywhere anywhere tcp 
dpt:22 state NEW recent: SET name: SSH side: source mask: 
:::::::
SSHBFATK   tcp  anywhere anywhere tcp 
dpt:22 state NEW recent: UPDATE seconds: 600 hit_count: 201 name: SSH 
side: source mask: :::::::



The system's input chain should allow NFS traffic on IPv6 by virtue of 
the ACCEPT policy.  That suggests that the NFS service isn't listening 
on an IPv6 network socket.

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Re: Learning ipv6 quirks

2021-06-21 Thread Gordon Messmer

On 6/21/21 6:17 AM, Robert McBroom via users wrote:
@RobertPC ~]# mount -v -t nfs 
[fd2e:cb3b:f005::ec1]:/mnt/HD/HD_a2/mcstuffy /mnt/mcstuffy

mount.nfs: timeout set for Mon Jun 21 06:42:25 2021
mount.nfs: trying text-based options 
'vers=4.2,addr=fd2e:cb3b:f005::ec1,clientaddr=fd2e:cb3b:f005::ec1'

mount.nfs: mount(2): Connection refused



1: Is the nfs port open on ipv6?  Use "ss -ln | grep :2049" and look for 
a listening port with an IPv6 address, like:


tcp    LISTEN 0  64 [::]:2049 [::]:*

2: Does your firewall allow access to port 2049 on IPv6?  Use 
"firewall-cmd --list-services" and look for "nfs", or use "ip6tables -L" 
and look for the input chain for your default zone (possibly 
IN_public_allow).


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Re: upgrading to fedora 34

2021-05-22 Thread Gordon Messmer

On 5/20/21 6:49 AM, Angelo Moreschini wrote:
(using the shutdown -r now  -to reboot after sudo dnf system-upgrade 
download --releasever=33  )


but after I give the last command :
I got the error  message : :
\Error: system is not ready for upgrade



There is a bug report that suggests that the error message you're 
describing can occur if "sudo dnf system-upgrade reboot" is not the step 
immediately following "sudo dnf system-upgrade download".


https://github.com/rpm-software-management/dnf-plugin-system-upgrade/issues/33

I don't see the output of "sudo dnf system-upgrade download 
--releasever=34" on your system in this thread.  If there were conflicts 
that require --allowerasing, you should see them there. Could you post 
the output of the download command?  (And if it doesn't report any 
errors, then run "sudo dnf system-upgrade reboot" next.)

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Re: Honest Questions -- Trying to decide on version of linux/os

2021-05-20 Thread Gordon Messmer

On 5/20/21 3:18 AM, Tim via users wrote:

1. Me, who has a webserver, mailserver, whatever, and wants it to keep
on running without having to continually tinker with it manually.  A
well managed rolling-release system may succeed there.



Cool, but neither Fedora nor CentOS Stream are rolling releases, so 
there's no reason to worry about this with any of the systems in discussion.




2. Others who write code need to have predictable behaviour out of
their systems, it's hard to write code when the goalposts keep
changing.  If coding is your job, you may well jump to another distro
that's more reliable.



The API/ABI policy is the same for CentOS Stream as it is for the 
corresponding RHEL release, so the goalposts aren't going to move any 
more on CentOS Stream than they do on RHEL (or on CentOS today).


On Fedora, of course, the goalposts may shift at roughly 6 month intervals.



I use CentOS on a server, here, because Fedora's rapid changes are too
disruptive (to me) but Fedora is tolerable on a workstation.  I stuck
at CentOS 7 because of what I read about 8, first triggered off when I
read the end-of-life dates for both systems.  I'll probably be
replacing the hardware when 7 goes end of life.



I don't know what you've read about CentOS Stream, but the vast majority 
of what I've read from sources outside Red Hat have been pure FUD.  An 
awful lot of people have entirely the wrong idea about what's happening.

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Re: Honest Questions -- Trying to decide on version of linux/os

2021-05-19 Thread Gordon Messmer

On 5/19/21 9:58 AM, Bill Oliver wrote:

The CentOS developers seem to be moving to a new workalike called Rocky
Linux:



Rocky Linux was created by a former CentOS developer (one of the 
founders).  However, I'm not aware of any current developers moving to 
other rebuilds.  Those developers are now working on CentOS Stream.


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Re: Honest Questions -- Trying to decide on version of linux/os

2021-05-19 Thread Gordon Messmer

On 5/19/21 11:29 AM, Dave Ihnat wrote:

Those who want CentOS are a different type of user than Fedora.  They have
production machines for which LTS stability is far more important than
latest'n'greatest.  THAT is dropped--you're likely to have to do a big-bang
refresh on CentOS now every 30-60 days, a no-go for most production
environments.  It's really screwed with a lot of my clients.



CentOS Stream provides LTS stability, though a lot of community 
reactions would lead you to believe otherwise.  CentOS Stream is *not* 
latest'n'greatest.

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Re: Honest Questions -- Trying to decide on version of linux/os

2021-05-19 Thread Gordon Messmer

On 5/19/21 10:50 AM, John Mellor wrote:
They didn't drop it at all.  They changed from a fixed release 
schedule to a rolling release.  As a potential dev environment, this 
is a huge improvement.  RedHat and CentOS tend to be running ancient 
versions of tools and apps in the name of stability - not what you 
need when you're developing new things.



As a point of clarification: CentOS Stream is not a rolling release, it 
is a release with "rolling updates".  That is only to say that there are 
no longer minor releases every six months. That's pretty much the only 
significant change.  As a consequence, CentOS Stream is still going to 
have the same "ancient versions" that RHEL does, overall.  Stream will 
get updates destined for RHEL a little earlier than RHEL gets them, but 
it's not going to get updates that would be unsuitable for RHEL.


For development systems where you want very contemporary packages, 
Fedora is a good choice.  For production systems where you want more 
conservative updates, CentOS Stream is a good choice.  For systems where 
you want a support contract, RHEL is a good choice.

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Re: Honest Questions -- Trying to decide on version of linux/os

2021-05-19 Thread Gordon Messmer

On 5/19/21 10:08 AM, Roger Heflin wrote:
They dropped "releases".   What it is now appears to be a continuous 
stream of rolling updates with no defined 7.9 release, just a stream.



They didn't drop releases entirely, just minor releases.  And that's 
good, because minor releases in CentOS were a bug.  They did not improve 
reliability the way that minor releases improve RHEL reliability.


https://www.youtube.com/watch?v=tf_EkU3x2G0
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Re: Lenovo is a JOKE (IBM too)

2021-04-04 Thread Gordon Messmer

On 4/4/21 10:32 AM, lejeczek via users wrote:
Moreover, it never crossed my mind that me sharing my experience and 
expressing my opinion would be taken as a call for help.



This is, specifically, a support forum.  It is a place to ask for help.  
Every message is sent to "Community support for Fedora users".


I don't think your thread is helpful.  We don't know what model of 
system you have, which might have power management issues.  We don't 
know which group told you they don't support Linux systems. Matthew 
offered to try to help improve support responses, and you've blown him off.


If you're not interested in solving the problem, then you're just 
ranting, and that's off-topic for this list.

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Re: Lenovo USB 3.0 Dock drivers - Displaylink

2021-04-04 Thread Gordon Messmer

On 4/4/21 8:58 AM, Frederic Muller wrote:


RIght now 3 (I hoped) Dell, the coming back one is a HP.
1 Dell 24" 2560x1440 @ 60Hz
1 Dell 22" 1680x1050 @ 60Hz
1 Dell 17" 1280x1024 @... I think 60Hz but it's not connected for now

The HP coming back is a HD monitor, 23" and there 1920 x1080, I think 
at 60Hz. 



https://en.wikipedia.org/wiki/DisplayPort#Resolution_and_refresh_frequency_limits

2560x1440@60 requires 5.63 Gbps bandwidth.
1680x1050@60 requires 2.7 Gbps (I think)
1280x1024@60 requires 1.8 Gbps (again, I think)
1920x1080@60 requires 3.2 Gbps

The X1 Carbon 3rd Gen has one Mini DisplayPort (with roughly 12Gbps 
bandwidth) and one HDMI port (roughly 6Gbps), and the manual indicates 
support for three independent displays.  That might indicate a 
limitation of just one display per port, I'm not really sure about that.


But, hypothetically, there should be enough bandwidth to drive any three 
of those displays with one monitor on HDMI and two monitors 
daisy-chained over DisplayPort with no other devices required as long as 
DisplayPort 1.2 is supported by both the laptop and the monitors.  I 
*think* it is on the X1 Carbon 3rd Gen.  If your monitors don't support 
DisplayPort daisy-chaining, but they do support DisplayPort, you might 
be able to use a DisplayPort MST hub to link two monitors on one laptop 
port.


If you don't have at least two DisplayPort monitors, then a dock with a 
DisplayLink chip is probably your only option.

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Re: Lenovo USB 3.0 Dock drivers - Displaylink

2021-04-04 Thread Gordon Messmer

On 4/4/21 8:06 AM, Frederic Muller wrote:
do you know of a better system to get 3 external monitors connected to 
a Thinkpad X1 Carbon 3rd gen



What resolution and refresh rate are the 3 monitors?
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Re: Lenovo USB 3.0 Dock drivers - Displaylink

2021-04-04 Thread Gordon Messmer

On 4/3/21 10:39 PM, Frederic Muller wrote:
I enclosed all the steps in that paste here 
https://paste.centos.org/view/bf947c35 . The full make.log  is at "the 
bottom" of the page (starts line 124). 



Great.  That log has information about the actual failures, starting on 
line 143.  Searching for that error should lead you here:


https://github.com/DisplayLink/evdi/issues/249

There, the developers are discussing support for kernel 5.11 which isn't 
present in version 1.7.2.  There are other release branches (1.8.0 and 
1.9.0) but I would disregard those for now. 1.8.0 is older than 1.7.2 by 
several months, and 1.9.0 was released the same day as 1.7.2.  There are 
no published releases that will support 5.11:


https://github.com/DisplayLink/evdi/releases

That leaves you with a handful of options, of which I think two stand 
out.  The first would be to simply stick with kernel 5.10. It looks like 
5.10.22-200.fc33 is still in the updates repo, and you could fall back 
to that, and I'd expect the evdi driver to work.


The other option, which is more work, would be to clone the evdi repo 
from GitHub and manually build the evdi kernel module.  It looks like 
that would be:


    git clone https://github.com/DisplayLink/evdi.git
    git checkout devel
    sudo make -C module install
    sudo make clean

If you go that route, you'll need to manually rebuild the module each 
time the kernel updates (until the displaylink-rpm package is updated to 
a version that supports your kernel, when such a version is published), 
and I'm not sure whether you might run into compatibility problems from 
a version mismatch between the kernel module (which will not be the 1.7 
branch) and the userspace components (which will be the 1.7 branch on 
your system).


Between the two, I'd suggest sticking with kernel 5.10 until the 
displaylink-rpm catches up.  (My employer has a large fleet of 
DisplayLink hardware, and periodically has to avoid updating our 
non-Linux desktop operating systems in order to keep them working, 
accepting the security vulnerabilities that come from delaying updates, 
which is why I recommend avoiding this hardware whenever possible.)

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Re: Lenovo USB 3.0 Dock drivers - Displaylink

2021-04-03 Thread Gordon Messmer

On 4/3/21 12:03 AM, Frederic Muller wrote:



Thank you for all those detailed information. I did install evdi 
through the repos suggested by Jonathan, with no success though.



The package you started with had both the DKMS evdi kernel module and 
other support, so adding the package from rpmsphere means you now have 
two DKMS evdi modules installed.


At this point, I'd suggest removing both packages and reinstalling the 
displaylink-rpm package.



Searching a bit more I found out I could edit the evdi dkms.conf file 
and add the proper path.



Restore the file to its original state.  The default path works. There's 
something else causing your error.



Then something starts happening when running dkms build but then stops 
again. Checking the log states:

ERROR: Kernel configuration is invalid.";        \
echo >&2 " include/generated/autoconf.h or 
include/config/auto.conf are missing.";\
echo >&2 " Run 'make oldconfig && make prepare' on kernel src 
to fix it. 



That might not be the key error.  This bug report on the displaylink-rpm 
package suggests that you probably need to install libdrm-devel.


https://github.com/displaylink-rpm/displaylink-rpm/issues/55

If that doesn't resolve the problem, please post the entire log 
somewhere we can access it.  Maybe: https://paste.centos.org/

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Re: Lenovo is a JOKE (IBM too)

2021-04-03 Thread Gordon Messmer

On 4/3/21 2:00 AM, lejeczek via users wrote:
I'm experiencing sleep/resume issue with my Lenovo two laptops, same 
problem my friend sees, only he did file a support request to Lenovo. 



Which models?  And what is the problem?

A friend of mine just purchased a Thinkpad Nano, and it's consuming more 
power than expected when suspended.  Seems to not be reaching PC10 
state.  He has an open case with Lenovo, and they're actively 
troubleshooting that issue.  It's not resolved yet, but they're not 
brushing him off.


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Re: Lenovo is a JOKE (IBM too)

2021-04-03 Thread Gordon Messmer

On 4/3/21 10:48 AM, lejeczek via users wrote:


I've seen, I think many remember too, with Dell, them too a few years 
ago announced they would start to offer Ubuntu and we know how it 
ended, I think with one single model sold with Ubuntu.



There are currently at least six laptop models and at least six 
workstations sold with GNU/Linux OS:


https://www.dell.com/en-us/work/shop/overview/cp/linuxsystems

Small numbers compared to their enormous portfolio, but more than enough 
for my tastes.


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Re: Lenovo USB 3.0 Dock drivers - Displaylink

2021-04-02 Thread Gordon Messmer

On 4/2/21 3:47 AM, Frederic Muller wrote:


It turns out that video through USB is not part of the standards and 
thus proprietary.



Just a point of clarification: video (DisplayPort) over USB *is* a part 
of the USB standard.  You have a non-standard dock.


DisplayLink (not DisplayPort) is basically a crappy GPU attached over 
USB.  It has some advantages, such as driving multiple monitors over a 
single port without daisy chaining, and driving higher resolution 
monitors than is possible over USB 3.0, but it's also slow and prone to 
corruption, and requires a driver that's not good on any platform (I 
work with a group that supports thousands of these on Windows and 
macOS.  They're a little bit terrible.)




sbin/modprobe evdi
modprobe: FATAL: Module evdi not found in directory 
/lib/modules/5.11.10-200.fc33.x86_64 



dkms should have compiled that driver when you installed the RPM.  Run 
this command to find the location of the log file, and examine that:


rpm -q displaylink --scripts

The log file should have more information about why you don't have an 
evdi module.

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Re: Inhibit sleep from systemd service

2021-03-24 Thread Gordon Messmer

On 3/24/21 11:17 AM, Matthew Miller wrote:

This is pretty cool -- I'm thinking of something similar, as my new
workstation system is a little too power-hungry to make me feel good about
leaving on all the time. Do you have a blog post or repo with your complete
solution?



I keep this in a private Ansible repo, but I've pulled the relevant bits 
out and put them here:


https://github.com/gordonmessmer/ansible-borg-client

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Re: Inhibit sleep from systemd service

2021-03-23 Thread Gordon Messmer

On 3/21/21 11:08 PM, Ed Greshko wrote:
So, does your backup process work when called from crontab entry? 



Yes, it does, and that's part of what confused me.  However -- and this 
is rather embarrassing -- the real problem was a missing environment 
variable in the script when the process was run as a systemd unit.  I 
thought the log entry "systemd-inhibit[19767]: read: Connection reset by 
peer" was some sort of dbus problem reported by systemd-inhibit, but 
that text is really stderr from the script.


All sorted out and working as expected now.
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Inhibit sleep from systemd service

2021-03-21 Thread Gordon Messmer
I'd like to inhibit suspend while backups run on my laptop.  I'm 
scheduling those backups with a systemd timer[1] and service[2]. I've 
read that the default polkit policy only permits inhibiting suspend from 
within a login session, so I've also tried to add rules to allow the 
root user to inhibit suspend[3].  However, with all of those in place, I 
still get errors that I think indicate that the "systemd-inhibit" 
command is failing[4].


I'm running this on Fedora 33.  Has anyone successfully used 
systemd-inhibit from a systemd unit?



1:
# cat /usr/lib/systemd/system/run-borg.timer

[Unit]
Description=Periodic borg backup

[Timer]
OnCalendar=08..20/2:00
Persistent=true

[Install]
WantedBy=timers.target



2:
# cat /usr/lib/systemd/system/run-borg.service
[Unit]
Description=Run borg backup
RequiresMountsFor=/var/log
ConditionACPower=true

[Service]
Type=oneshot
ExecStart=/usr/bin/systemd-inhibit --who=borg-backup '--why=Backup in 
progress' --mode=block /root/run-borg




3:
# cat /etc/polkit-1/rules.d/root-inhibit-suspend.rules
polkit.addRule(function(action, subject) {
    if (action.id == "org.freedesktop.login1.inhibit-block-shutdown" &&
    subject.isInGroup("root")) {
    return polkit.Result.YES;
    }
});

polkit.addRule(function(action, subject) {
    if (action.id == "org.freedesktop.login1.inhibit-block-sleep" &&
    subject.isInGroup("root")) {
    return polkit.Result.YES;
    }
});

polkit.addRule(function(action, subject) {
    if (action.id == "org.freedesktop.login1.inhibit-block-idle" &&
    subject.isInGroup("root")) {
    return polkit.Result.YES;
    }
});



4:
Mar 21 18:00:41 vagabond systemd[1]: Starting Run borg backup...
Mar 21 18:00:41 vagabond systemd-inhibit[19767]: read: Connection reset 
by peer
Mar 21 18:00:41 vagabond systemd-inhibit[19761]: /root/run-borg failed 
with exit status 1.
Mar 21 18:00:41 vagabond systemd[1]: run-borg.service: Main process 
exited, code=exited, status=1/FAILURE
Mar 21 18:00:41 vagabond systemd[1]: run-borg.service: Failed with 
result 'exit-code'.

Mar 21 18:00:41 vagabond systemd[1]: Failed to start Run borg backup.

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[389-users] Re: How to analyze large Multi Master Replication (test)-network?

2021-02-27 Thread Gordon Messmer

On 2/26/21 5:22 AM, Eugen Lamers wrote:

Documentation read so far:



It sounds like you're building a new replication monitor, so I'd think 
that a good place to start would be with a review of the existing one:


https://directory.fedoraproject.org/docs/389ds/howto/howto-monitor-replication.html

https://directory.fedoraproject.org/docs/389ds/design/replication-monitor-design.html

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Re: New kernel errors after last update, Fedora 33

2021-02-18 Thread Gordon Messmer

On 2/18/21 8:38 AM, Jerome Lille wrote:

But as I said the nfs shares seem to work fine, I can read and write to
files on them.



Yep, everything will look fine until an application on your client tries 
to lock a file, and then it will hang forever. Locking files during 
editing is pretty common, so I'm surprised you haven't seen problems yet.


You should do one of:

1: Update the client fstab and use NFSv4 instead of v3.  In most cases, 
this will be the simplest and best fix.


2: Update the server firewall rules to allow all traffic from clients.  
Not recommended.


3: Update /etc/sysconfig/nfs and configure the system to used fixed 
ports for NFS services.  Update your firewall rules to allow clients to 
reach those ports.  More work than #2, but maintains security.  This 
guide should help:


https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/storage_administration_guide/s2-nfs-nfs-firewall-config

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Re: cannot ssh between 2 Fedora 33 laptops (SOLVED)

2021-02-15 Thread Gordon Messmer

On 2/15/21 5:58 PM, S Bob wrote:
I disabled SELINUX on the new laptops (dont need it here) and 
everything works 



I don't believe there's any mechanism by which SELinux can result in 
ping indicating "destination host unreachable."


Can you reproduce the problem by turning SELinux back on?  If not, then 
the problem was something else.


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Re: BTRFS partition corrupted after deleting files in /home

2021-01-14 Thread Gordon Messmer

On 1/13/21 11:21 PM, Chris Murphy wrote:

548 hours is not an old drive. It shouldn't have any write errors. But
as a drive ages there might be some and they should be handled
transparently and not affect any other operation. Something is
definitely wrong that there are write errors followed by read errors
followed by this IDNF error which suggests the drive is having
problems read its own data written to sectors reserved for its own
use



Might "its own use" include SMART data?  Sreyan indicated that this 
laptop was purchased in 2016, and the HGST Travelstar 5K1000 would have 
been a new drive at that time.  It's odd, then, that the drive reports 
only 1671 Power_On_Hours.

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Re: BTRFS partition corrupted after deleting files in /home

2021-01-13 Thread Gordon Messmer

On 1/13/21 12:36 AM, Sreyan Chakravarty wrote:

I am fully open to the fact that there may be something wrong with my HDD.
But it is difficult to believe that, since this laptop is from 2016
and I had been using Windows 10 on it for a long time and saw no
problems.



None that you know of.  Windows storage doesn't checksum its content, so 
if any writes were missed, there's a fairly good chance the computer 
would never tell you that something was wrong.


But, setting that aside, you have to bear in mind that hard drives wear 
out.  Power supplies wear out.  Cables come loose. Even in mostly 
solid-state computers, systems wear out over time. "It worked in the 
past" is never evidence that a computer is working *now*.  Every 
computer component that fails was working fine before it failed.


There's nothing particularly surprising about the idea that a five year 
old hard drive isn't working any more.




Having said all that, I don't believe there is something wrong with
the hardware per se, but I do believe the firmware is not capable for
BTRFS.



You're drawing an entirely unsupported conclusion from the evidence in 
front of you.  btrfs doesn't demand something from your drive that other 
filesystems don't, it's just better at telling you that the storage 
isn't reliable.


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Re: BTRFS partition corrupted after deleting files in /home

2021-01-11 Thread Gordon Messmer

On 1/11/21 11:02 AM, Sreyan Chakravarty wrote:


something wrong with my HDD but the guys on the mailing list told me I
did not have to worry.

https://listi.jpberlin.de/pipermail/smartmontools-support/2020-November/000560.html



https://listi.jpberlin.de/pipermail/smartmontools-support/2020-November/000559.html

Your message indicated a sequence of errors that look like write 
failures, which sounds a lot like the problem that Chris described with 
your btrfs, "multiple writes from one commit are missing"


With all respect due to Carlos E. R., given that you were seeing read 
and write errors then, and you appear to be seeing write errors still, 
perhaps the conclusion that your hardware is OK was premature.  You 
should remain open the possibility that there is something wrong with 
one piece of hardware or another, particularly as you continue to gather 
new evidence.

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Re: BTRFS partition corrupted after deleting files in /home

2021-01-09 Thread Gordon Messmer

On 1/9/21 11:49 AM, Sreyan Chakravarty wrote:

https://askubuntu.com/a/391178/628460
Will the above work in telling me if I have ECC RAM ?


It should:

# lshw -C memory
...
  *-memory
   description: System Memory
   physical id: 27
   slot: System board or motherboard
   size: 32GiB
   capabilities: ecc
   configuration: errordetection=multi-bit-ecc

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Re: BTRFS partition corrupted after deleting files in /home

2021-01-09 Thread Gordon Messmer

On 1/9/21 9:09 AM, Sreyan Chakravarty wrote:

I mean, this is the reason I keep complaining that BTRFS is not stable enough.
...
So is this a problem of my machine/firmware or a problem in BTRFS itself ?



Since I haven't seen it asked yet: Does this system have ECC RAM?

I don't want to shortcut the debugging process or suggest that I think 
there are no bugs in btrfs, but one of the things we expected to happen 
in the move to checksummed filesystems is that bits that flipped in 
memory and then got written to disk were going to be discovered, where 
older filesystems had no way to discover that.  In those cases, bailing 
out and informing you that corruption was found isn't a sign that the 
system is "not stable enough", it's the desired outcome of actually 
checking the results.

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