October 2018 - openSUSE Users - openSUSE Mailing Lists

[opensuse] Spec'ing a 50 TB dedicated storage subsystem and room to grow?
by Greg Freemyer 22 Feb '19

22 Feb '19

All, I bought a used iSCSI based Drobo in 2016 with 50TB in it. It works great, but it isn't fast by today's standards. (100 MB/sec absolute max). And I never got it to work from openSUSE (Windows and Mac did work). I now need to buy something similar, but with fast I/O and Linux support: 10 Gbit Ethernet and fibre-channel may be my only options? Or are there point-to-point SAS external racks I should consider? Also, I will likely want to put a SSD based cache in the mix at some point. It could be integrated into the storage subsystem, or I could use something like bcache and have the SSD be in the server,. It just needs to be reliable and fast. Recommendations? (I'm thinking used and $10K at the high-end for the subsystem including PCIx cards and switches, if needed.) == details I need to buy a server with 50TB usable disk for a production environment. A high speed disk subsystem is critical. And the project may scale up over time. It doesn't need to be a fail-over cluster, just a single server. I'm looking at used equipment most likely. I was thinking one with 4 CPU sockets would let me start with 2 CPUs and then expand to 4 later on. Lots of RAM capacity would also be great. My first thought was to get a Dell R920 and throw a bunch of disks in it. https://goo.gl/images/x3Rfj2 24 disk slots! But then I looked at what size drives are available for those slots: 2.5 inch. I only see 2TB drives max. I'm hoping to use a Dell server because it's the preferred brand at my (new) job. Unless I'm missing something a standalone rack mount Dell won't work. So, now I'm looking at a used R820 most likely and some sort of disk subsystem to support it. I picked it because it is only a 5-year old design and it has 4 CPU sockets I can expand into as the server demand increases over time. Also 3TB max ram is way above what this will require, even long term. https://media.adn.de/media/DE/DocLib/Poweredge_Easy_Matrix.pdf A used, barebones R820 can be had for under $2K. Just add CPUs and ram. Greg -- To unsubscribe, e-mail: opensuse+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse+owner(a)opensuse.org

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[opensuse] Trying to adjust the swapiness of clamd
by Carlos E. R. 30 Nov '18

30 Nov '18

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I'm trying to force the clamd process to swap agresively, because by default it eats 500 MB of my limited memory even when it is doing nothing but waiting. Sorting process list in "top" by "RES" column shows that clamd is the 5th process using most memory in my system: top - 14:21:12 up 7 days, 14 min, 1 user, load average: 0,60, 0,70, 0,74 Tasks: 532 total, 2 running, 529 sleeping, 0 stopped, 1 zombie %Cpu(s): 5,8 us, 1,6 sy, 0,0 ni, 91,0 id, 1,7 wa, 0,0 hi, 0,0 si, 0,0 st KiB Mem: 8174528 total, 7765124 used, 409404 free, 24892 buffers KiB Swap: 25165820 total, 5177256 used, 19988564 free. 1970388 cached Mem PID USER PR NI VIRT RES SHR SWAP S %CPU %MEM TIME+ COMMAND 7098 cer 20 0 4249152 1,415g 61572 392760 S 0,000 18,15 295:54.17 thunderbird-bin 7494 cer 20 0 3040184 839476 51296 256248 S 0,330 10,27 155:16.49 Web Content 7341 cer 20 0 2858436 746840 41012 202296 S 3,300 9,136 74:35.03 Web Content 5221 cer 20 0 10,139g 740952 137364 464756 S 1,650 9,064 134:50.52 firefox 12020 vscan 20 0 711128 552372 1660 0 S 0,000 6,757 0:00.00 clamd ... Apparently this is done with cgroups, about which I know close to nothing. First I see: <https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/ht…> but I do not understand how to make use of it, except that I want to change memory.swappiness of the process. But I do not see where is that virtual file for the clamd process, if it exists. The examples there do things like: ~]# echo 1G > /cgroup/memory/lab1/memory.limit_in_bytes but they have a "lab1" entry for the particular process they are managing. I don't know how that entry appears. This is what I have: Telcontar:~ # ls /sys/fs/cgroup/memory/ cgroup.clone_children cgroup.sane_behavior memory.limit_in_bytes memory.move_charge_at_immigrate memory.pressure_level memory.swappiness notify_on_release cgroup.event_control memory.failcnt memory.low_limit_in_bytes memory.numa_stat memory.soft_limit_in_bytes memory.usage_in_bytes release_agent cgroup.procs memory.force_empty memory.max_usage_in_bytes memory.oom_control memory.stat memory.use_hierarchy tasks Telcontar:~ # So I continue googling. Aparently systemd can control cgroups. On systemd documentation site, <http://0pointer.de/blog/projects/resources.html>, I see that cgroup settings can be set on the systemd unit file. systemd for Administrators, Part XVIII Managing Resources ... Managing Other Resource Parameters which gives the exact example I want to try: [Service] ControlGroupAttribute=memory.swappiness 70 Fantastic! So I create "/etc/systemd/system/clamd.service.d/override.conf" file: [Service] ControlGroupAttribute=memory.swappiness 100 And try: Telcontar:~ # systemctl daemon-reload Telcontar:~ # systemctl status clamd.service ● clamd.service - Clamav antivirus Deamon Loaded: loaded (/usr/lib/systemd/system/clamd.service; disabled; vendor preset: disabled) Drop-In: /etc/systemd/system/clamd.service.d └─override.conf Active: active (running) since Mon 2018-10-15 14:07:56 CEST; 1min 2s ago Main PID: 12020 (clamd) Tasks: 2 (limit: 512) CGroup: /system.slice/clamd.service └─12020 /usr/sbin/clamd Oct 15 14:07:55 Telcontar clamd[12020]: Mail files support enabled. Oct 15 14:07:55 Telcontar clamd[12020]: OLE2 support enabled. Oct 15 14:07:55 Telcontar clamd[12020]: PDF support enabled. Oct 15 14:07:55 Telcontar clamd[12020]: SWF support enabled. Oct 15 14:07:55 Telcontar clamd[12020]: HTML support enabled. Oct 15 14:07:55 Telcontar clamd[12020]: XMLDOCS support enabled. Oct 15 14:07:55 Telcontar clamd[12020]: HWP3 support enabled. Oct 15 14:07:55 Telcontar clamd[12020]: Self checking every 3600 seconds. Oct 15 14:07:56 Telcontar systemd[1]: Started Clamav antivirus Deamon. Oct 15 14:08:49 Telcontar systemd[1]: [/etc/systemd/system/clamd.service.d/override.conf:2] Unknown lvalue 'ControlGroupAttribute' in section 'Service' Telcontar:~ # What? The lvalue is copied from the documentation! How can I then do it? - -- Cheers Carlos E. R. (from 42.3 x86_64 at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlvEiR4ACgkQtTMYHG2NR9XivACdGYCwgSru7a07vrXoejO/VP3A zXAAnjnb3Alv/2OxyH9Yit2rdBca2J0H =ZRmA -----END PGP SIGNATURE-----

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[opensuse] xtables-addons-kmp-default not updated to latest kernel-default version
by Holger Jakob 17 Nov '18

17 Nov '18

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[opensuse] Can not send email using postfix on Bell, probably port 25 blocked.
by Carlos E. R. 14 Nov '18

14 Nov '18

Hi, I can no longer send email "normally", I get: status=deferred (connect to mail.gmx.es[212.227.17.174]:25: Connection timed out) on all mail accounts. My guess that suddenly Bell figured out it should block me or port 25 outgoing. Stupid! :-( So I told Thunderbird to send without using postfix, and that apparently works (if you see this, it works), but I want to keep using postfix. TH is using port 465, SSL/TLS, and password. So, in "/etc/postfix/sender_relayhost" I change this entry: robin.listas(a)gmx.es [mail.gmx.es] to this: robin.listas(a)gmx.es [mail.gmx.es]:submission And then I get this on the log: #<2.6> 2018-09-19 19:55:09 Legolas postfix 2044 - - SMTPS wrappermode (TCP port 465) requires setting "smtp_tls_wrappermode = yes", and "smtp_tls_security_level = encrypt" (or stronger) So I do what it says, then I get this on the log: <2.6> 2018-09-19 20:21:50 Legolas postfix 4065 - - C9A36E309E: to=<opensuse(a)opensuse.org>, relay=mail.gmx.es[212.227.17.174]:587, delay=13119, delays=13118/0.5/0.47/0, dsn=4.7.5, status=deferred (Cannot start TLS: handshake failure) <2.6> 2018-09-19 20:21:50 Legolas postfix 4068 - - SSL_connect error to mail.gmx.es[212.227.17.184]:587: -1 <2.4> 2018-09-19 20:21:50 Legolas postfix 4068 - - warning: TLS library problem: error:1408F10B:SSL routines:ssl3_get_record:wrong version number:ssl/record/ssl3_record.c:252: <2.6> 2018-09-19 20:21:50 Legolas postfix 4068 - - 8AEF1E309F: to=<opensuse(a)opensuse.org>, relay=mail.gmx.es[212.227.17.184]:587, delay=12654, delays=12653/0.7/0.45/0, dsn=4.7.5, status=deferred (Cannot start TLS: handshake failure) So what can I do? it seems a bug in a library, right? -- Cheers / Saludos, Carlos E. R. (from openSUSE 15.0 (Legolas)) -- To unsubscribe, e-mail: opensuse+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse+owner(a)opensuse.org

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[opensuse] Login weirdness
by Michael Fischer 12 Nov '18

12 Nov '18

Leap 42.3 Haven't encountered this on previous installations, nor prior to a few weeks ago on this box. On a reboot, where it wold normally prompt for login, login: <typing anything here is not echoed back to the screen> Give Root Password for Maintenance (or press Control-D to continue) trying to log in normally just keeps having the terminal behave strangely, re-outputing some version of the above. hitting CTRL-D just sends it into a shutdown sequence. Hitting ENTER many times eventually produces "Welcome To OpenSuse".... and a login prompt which works normally. I find the following in journalctl: Oct 30 15:19:42 blinkenlights login[946]: gkr-pam: error looking up user information Oct 30 15:19:43 blinkenlights login[946]: pam_unix(login:auth): check pass; user unknown which I think comes from the botched efforts while it was saying """ Give Root Password for Maintenance (or press Control-D to continue) """ I recall seeing an error message about tty1 on the screen when I was in the midst of the failed logins and reboots, but I do not find it in journalctl. Suggestions for fixing/debugging, etc.?? journalctl _does_ show: Oct 30 16:50:25 blinkenlights smartd[929]: Device: /dev/sda [SAT], 16 Currently unreadable (pending) sectors Oct 30 16:50:25 blinkenlights smartd[929]: Device: /dev/sda [SAT], 16 Offline uncorrectable sectors Not sure if that is pertainent. TIA Michael -- Michael Fischer michael(a)visv.net -- To unsubscribe, e-mail: opensuse+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse+owner(a)opensuse.org

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[opensuse] Thunderbird v60 date format
by Carlos E. R. 12 Nov '18

12 Nov '18

Hi, I just noticed that Thunderbird now writes the hour in the dates (index view) as "HH. MM", instead of "HH:MM" My locale is: cer@Legolas:~> locale LANG=en_US.UTF-8 LC_CTYPE="en_US.UTF-8" LC_NUMERIC="en_US.UTF-8" LC_TIME=en_DK.UTF-8 LC_COLLATE="en_US.UTF-8" LC_MONETARY=es_ES@euro LC_MESSAGES="en_US.UTF-8" LC_PAPER="en_US.UTF-8" LC_NAME="en_US.UTF-8" LC_ADDRESS="en_US.UTF-8" LC_TELEPHONE=es_ES@euro LC_MEASUREMENT=es_ES@euro LC_IDENTIFICATION="en_US.UTF-8" LC_ALL= cer@Legolas:~> And I'm on 15.0 -- Cheers / Saludos, Carlos E. R. (from openSUSE 15.0 (Legolas)) -- To unsubscribe, e-mail: opensuse+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse+owner(a)opensuse.org

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[opensuse] No keyboard backlight since 4.18.x kernels
by Albert Oszkó 09 Nov '18

09 Nov '18

Hi all, My problem is in the subject. I even cannot find anymore where ccould I set it. I have two ASUS laptops, from the K501U series, but they are non identical. Keyboard backlight is lost on both of them. The last 4.17.x kernel had/has keyboard light. I waited for updates but with the coming of 4.18.6 kernel the lights are still lost. Albert

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[opensuse] Epson L805 , anybody?
by Radule Šoškić 03 Nov '18

03 Nov '18

Hi, Any experiences with Epson L805 on this list? Compatibility, qualty, economy - pro et contra, please. Currently, I know there is some level of support for Linux (generic driver and utility SW available at http://download.ebz.epson.net/dsc/search/01/search/searchModule). It's all very new (25.10.2018). It seems that CISS/ITS technology takes economy to next level comparing to older ink-jets and lasers, and that's what attracted me. But I would like to get some real-life comments from real users, if any. TIA and best regards, Radule Soskic N��r��y隊Z)z{.�ﮞ˛��m�)z{.��+�:�{Zr�az�'z��j)h��Ǿ� ޮ�^�ˬz��

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[opensuse] python question
by George from the tribe 02 Nov '18

02 Nov '18

I am looking to get started on learning python. Any python programmers out there? My number 1 question is, what is your preferred IDE? I am looking at a medium sized project (for my experience) and I expect I will need some good troubleshooting tools that also give syntax help. I have read that Eclipse is a really good IDE for python, even though it is mostly used for java, and that PyDev adds lots of features to Eclipse. But there are other recommendations also. Anyone have any thoughts on what you have used and prefer? Advantages and disadvantages? -- George Box: 42.3 | KDE Plasma 5.8 | AMD Phenom IIX4 | 64 | 32GB Laptop #1: TW | Plasma 5.13 | AMD FX 7TH GEN | 64 | 32GB Laptop #2: 15.0 | KDE Plasma 5.8 | Core i5 | 64 | 8GB -- To unsubscribe, e-mail: opensuse+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse+owner(a)opensuse.org

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[opensuse] Questions about name resolving using /etc/hosts
by Marc Chamberlin 01 Nov '18

01 Nov '18

I am running OpenSuSE Leap 42.3 on a machine with 2 NICs. I am also running a Bind DNS server on the same system. I did an experiment in order to assign a unique hostname to each of the NIC interface cards by simply editing my /etc/hosts file as shown below: (sorry, I am not sure how to format this for a newsgroup.) bigbang:/etc # cat /etc/hosts 127.0.0.1 localhost # added for each nic 192.168.10.100 bigbangInternal.mydomainname.com bigbangInternal 10.10.10.100 bigbangExternal.mydomainname.com bigbangExternal ::1 localhost ipv6-localhost ipv6-loopback fe00::0 ipv6-localnet ff00::0 ipv6-mcastprefix ff02::1 ipv6-allnodes ff02::2 ipv6-allrouters ff02::3 ipv6-allhosts My host.conf file is configured to look at the hosts file first when resolving names: bigbang:/etc # cat /etc/host.conf ## file comments deleted for brevity... order hosts, bind multi on My nsswitch.conf file is also configured to look at the hosts file first when resolving names: bigbang:/etc # cat /etc/nsswitch.conf ## file comments deleted for brevity... passwd: compat group: compat hosts: files mdns_minimal [NOTFOUND=return] dns networks: files dns services: files protocols: files rpc: files ethers: files netmasks: files netgroup: files nis publickey: files bootparams: files automount: files nis aliases: files After editing the /etc/hosts file I flushed the name service cache: bigbang:/etc # systemctl restart nscd.service and when I test things out I get the following "surprising" results which appear at first glance to show that the name resolving order specified in nsswitch.conf is not being honored. But something else even deeper is going on as well that really has me baffled: bigbang:/etc # ping bigbangInternal ping: unknown host bigbangInternal ??? I didn't expect that! bigbang:/etc # getent hosts 127.0.0.1 localhost 192.168.10.100 bigbangInternal.mydomainname.com bigbangInternal 10.10.10.100 bigbangExternal.mydomainname.com bigbangExternal that looks good... bigbang:/etc # getent hosts localhost ::1 localhost ??? I am a bit surprised by this as I did not enable IPv6 addresses in YaST bigbang:/etc # getent hosts bigbangInternal bigbang:/etc # getent hosts bigbangInternal.mydomainname.com ??? no response! why not? bigbang:/etc # getent hosts 10.10.10.100 10.10.10.100 mydomainname.com ??? huh? Why did I get my dns domain name? bigbang:/etc # getent hosts 192.168.10.100 ??? no response! My guess is that these attempts to resolve these names and ip addresses is being done by my bind dns server and not by looking things up in the /etc/hosts file. But I don't understand why given that I am specifying that the order of lookup is to be done first via the /etc/hosts file and then by the bind dns server if the lookup in the hosts file fails. What am I missing and/or not understanding? Thanks in advance for any guidance/clues as to why I am seeing these results. Marc... -- Linux Counter -- To unsubscribe, e-mail: opensuse+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse+owner(a)opensuse.org

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