Arm-dev

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686 discussions

Enterprise distros and the two faces of 'reliability'
by Fred Gleason 28 Oct '18

28 Oct '18

Howdy Folks: Our discussion of the distinctive elements of CentOS’s Aarch64 variant has gotten me pondering. What does an ‘enterprise’ distro bring to the table that makes it desirable over the alternatives available? (By ‘enterprise distro’, I here mean the stream of data originated by the Upstream Provider, as well as those modified and distributed by all the various downstream projects, including CentOS). To my mind, I see two basic categories that are relevant here: 1) ‘Enterprise’ features, by which I mean things like: supports ‘big iron’ systems, supports fault tolerance and scalability, interoperates well with all of the common ‘non-native’ protocols and features found in a typical large computing environment. 2) ‘Stability’ features, by which I mean: has a well-defined infrastructure for distributing code fixes and security updates, has a long support lifetime, manages the ABI carefully so as to ensure that system updates can be applied with good confidence that they will not break existing locally-installed applications. These two categories are largely orthogonal. I say ‘largely’ because there is a hidden implicit commonality: reliability. Yet the presence of one need not necessarily imply the presence (or even desirability) of the other. For example, a project that uses an ‘embedded’ board (BeagleBoard, etc) to make small, autonomous ‘widget’ type devices really does not care about about the presence of 1), while 2) can be a highly desirable attribute. Category 1) is essentially an *operational* attribute, desirable in certain use cases but superfluous (or even counterproductive) in others, while category 2) addresses *maintenance* issues, critical for long-term service and support of a system but largely irrelevant to the typical day-to-day operation of applications. All of this to pose the question: is an ‘enterprise’ distro (in the specific sense meant here) an appropriate long-term choice for an ‘embedded’ project? Given the stated intention of the Upstream Provider to support only ARM systems that integrate APCI and comply with SBSA [Server Base System Architecture] standards in future major releases (see https://lists.centos.org/pipermail/arm-dev/2017-October/003120.html) is such a distro an appropriate long-term choice for an ‘embedded’ project? Cheers! |----------------------------------------------------------------------| | Frederick F. Gleason, Jr. | Chief Developer | | | Paravel Systems | |----------------------------------------------------------------------| | A good plan today is better than a perfect plan tomorrow. | | -- General George Patton | |----------------------------------------------------------------------|

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Hardware Giveaway
by Gordan Bobic 27 Oct '18

27 Oct '18

I've been meaning to get back to some of my ARM hardware, but inbetween all the work commitments it doesn't look like that's feasible before these ARMs will only be good for the landfill. So, if anyone here is interested, here is what is up for grabs, for free: - Toshiba AC-100 x3 (at least one is in it's original box) - Genesi Efika MX Smartbook (in original box) - Compulab SB-A510+CM-A510 (yup, in original box) - Compulab TrimSlice (you guessed it - in original box) All have been used, but are in condition ranging from excellent to mint. If anyone wants any of these for a purpose better than it gathering dust in their cupboard rather than mine, email me off list with a shipping label for posting from mainland UK, and I'll post it to you. Best regards. Gordan

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hikey 960?
by Skorpeo Skorpeo 26 Oct '18

26 Oct '18

Has anyone been able to install centos using iso on a Hikey 960? The wiki says "The Hikey from 96boards mostly works, but setup is complex. The installer currently cannot be used as one would traditionally expect." Any guides out there on how to get it to work? I am only able to get it to the initial installation menu but no further, I tried playing with various kernel parameters but to no avail. Any guidance or suggestions would be appreciated!

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Re: [Arm-dev] Hardware Giveaway
by Mark Verlinde 26 Oct '18

26 Oct '18

-----Oorspronkelijk bericht----- Afzender: Gordan Bobic<gordan(a)redsleeve.org> Verstuurd: Donderdag 25 Oktober 2018 21:01 Aan: redsleeve-users(a)googlegroups.com Cc: Conversations around CentOS on ARM hardware <arm-dev(a)centos.org> Onderwerp: [Arm-dev] Hardware Giveaway Ive been meaning to get back to some of my ARM hardware, but inbetween all the work commitments it doesnt look like thats feasible before these ARMs will only be good for the landfill. So, if anyone here is interested, here is what is up for grabs, for free: - Toshiba AC-100 x3 (at least one is in its original box) - Genesi Efika MX Smartbook (in original box) - Compulab SB-A510+CM-A510 (yup, in original box) - Compulab TrimSlice (you guessed it - in original box) All have been used, but are in condition ranging from excellent to mint. If anyone wants any of these for a purpose better than it gathering dust in their cupboard rather than mine, email me off list with a shipping label for posting from mainland UK, and Ill post it to you. Best regards. Gordan The SB-A510+CM-A510 is very appealing, but I an afraid it would get the same destiny in my possession... I'll sleep over it a couple of nights,; if it still buzzes in my head i might take on your offer. Grtz Mark

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Odroid UX4/HC1,2 Community kernel 4.18.x
by Mark Verlinde 26 Oct '18

26 Oct '18

-----Oorspronkelijk bericht----- > Afzender:arm_ml@rirasoft.de <arm_ml(a)rirasoft.de> > Verstuurd: Donderdag 25 Oktober 2018 9:14 > Aan: arm-dev(a)centos.org > Onderwerp: Re: [Arm-dev] Community kernel 4.18.x > > > Am 2018-10-23 17:49, schrieb Mark Verlinde: > > -----Oorspronkelijk bericht----- > > >> > >> Mark: how do you get CentOS with this actual kernel on the Odroid HC1 > >> ? > >> I've 2 of them running Fedora as a Mailserver and Nextcloudserver. > > > ---schnipp-- > > > > > > _OT_ > > For personal use and on request from others I made a flash-able img > > file with 4.18.16 installed. > > It is a bit different from the default userland-generic though: 2 > > partitions starting @4096 (1) boot (2) rootfs; compressed swap-space > > in ram. > > NOTE: this link may be short lived as the setup is experimental > > https://drive.google.com/open?id=1PvLxWVwvK9H2zJTnBF2rKlA7IDmbpa7s > > and my rough notes on the HC1: > > https://gist.github.com/markVnl/7adf25cebfdce5d5009d93b7b4caae96 > > _OT_ > > > > Greetings Mark > >> > >> Greetings > >> Andreas > >> _______________________________________________ > >> Arm-dev mailing list > >> Arm-dev(a)centos.org > >> https://lists.centos.org/mailman/listinfo/arm-dev > >> > > Hello Mark, > > excellent work ! I've a running Odroid-XU4 with Cloudshell 2 running > with CentOS !! > I've done this working from a Cubietruck Plus with CentOS. > > Thank you. > > Andreas Thank you for your feedback! Probably unnecessary to note it is still in a testing condition; So if you experiencing troubles please share them with us! Gtz Mark

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Re: [Arm-dev] Community kernel 4.18.x
by Mark Verlinde 25 Oct '18

25 Oct '18

-----Oorspronkelijk bericht----- > Afzender:arm_ml@rirasoft.de <arm_ml(a)rirasoft.de> > Verstuurd: Dinsdag 23 Oktober 2018 9:39 > Aan: arm-dev(a)centos.org > Onderwerp: Re: [Arm-dev] Community kernel 4.18.x > > Am 2018-10-22 19:01, schrieb Mark Verlinde: > > -----Oorspronkelijk bericht----- > >> Afzender:Mark Verlinde <mark(a)havak.nl> > >> Verstuurd: Maandag 22 Oktober 2018 14:27 > >> Aan: Conversations around CentOS on ARM hardware <arm-dev(a)centos.org> > >> Onderwerp: Re: [Arm-dev] Community kernel 4.18.x > > > >> > >> Thank you for the hints, it Led to a booting setup! > >> > >> Still need to fine tine, some customization may not be needed > >> howerever this configuration led to the booting odroid HC1. > >> > >> Appended cpuidle.off=1 console=tty1 console=ttySAC2,115200n8 to the > >> cmdline: > >> > >> # cat /boot/extlinux/extlinux.conf > >> # extlinux.conf generated by appliance-creator > >> ui menu.c32 > >> menu autoboot Welcome to Centos-Uboot-Community-kernel. Automatic boot > >> in # second{,s}. Press a key for options. > >> menu title Centos-Uboot-Community-kernel Boot Options. > >> menu hidden > >> timeout 20 > >> totaltimeout 600 > >> > >> default=Centos-Uboot-Community-kernel (4.18.14-200.el7.armv7hl) > >> label CentOS Linux (4.18.16-200.el7.armv7hl) 7 (AltArch) > >> kernel /vmlinuz-4.18.16-200.el7.armv7hl > >> append cpuidle.off=1 console=tty1 console=ttySAC2,115200n8 ro > >> root=UUID=a306d630-4957-4da0-8dd6-79f943147d61 LANG=en_US.UTF-8 > >> fdtdir /dtb-4.18.16-200.el7.armv7hl > >> initrd /initramfs-4.18.16-200.el7.armv7hl.img > >> > >> label Centos-Uboot-Community-kernel (4.18.14-200.el7.armv7hl) > >> kernel /vmlinuz-4.18.14-200.el7.armv7hl > >> append cpuidle.off=1 console=tty1 console=ttySAC2,115200n8 ro > >> root=UUID=a306d630-4957-4da0-8dd6-79f943147d61 > >> fdtdir /dtb-4.18.14-200.el7.armv7hl > >> initrd /initramfs-4.18.14-200.el7.armv7hl.img > >> > >> In an effort to mimic the FC28 intenramfs added/omitted some modules > >> and > >> added _all_ exynos and samsung divers loaded by the booting FC28 > >> setup: > >> > >> #cat /etc/dracut.conf.d/odroid_hc1.conf > >> add_dracutmodules+="dm" > >> omit_dracutmodules+="network ifcfg" > >> add_drivers+="exynosdrm exynos_bus exynos_trng exynos_nocp exynos_rng > >> phy_exynos_dp_video phy_exynos_mipi_video dwc3_exynos clk_exynos_audss > >> i2c_exynos5 dw_mmc_exynos dw_mmc_pltfm dw_mmc phy_exynos_usb2 > >> phy_exynos5_usbdrd pwm_samsung " > >> > >> (AGAIN) NOTE: some may be necessary others may be ommited.. > > > > Turns out one additional driver - dwc3 - is needed to boot the odroid > > HC1 with a rootfs residing on a SATA device. > > My best guess is dwc3_exynos actually depends on dwc3 and/or (one of) > > the dependencies of dwc3. > > > > > > #cat /etc/dracut.conf.d/odroid_hc1.conf > > add_dracutmodules+="dm" > > omit_dracutmodules+="network ifcfg" > > add_drivers+=" exynosdrm exynos_bus exynos_trng exynos_nocp exynos_rng > > phy_exynos_dp_video phy_exynos_mipi_video dwc3_exynos clk_exynos_audss > > i2c_exynos5 dw_mmc_exynos dw_mmc_pltfm dw_mmc phy_exynos_usb2 > > phy_exynos5_usbdrd pwm_samsung " > > add_drivers+=" dwc3" > > > > Mark: how do you get CentOS with this actual kernel on the Odroid HC1 ? > I've 2 of them running Fedora as a Mailserver and Nextcloudserver. The kernel are kindly build by Pablo and can be found at: https://armv7.dev.centos.org/repodir/community-kernel-latest/ On a running armhfp device (distro or kernel should not matter); You may mount the sd-card and chroot in to the card to install / update the kernel. Mount the rootfs partition (usually part4) of your sd card and the boot partition (usually part2); mount proc and sys of the "host" too (ie): mount /dev/sdX4 /mnt mount /dev/sdX2 /mount/boot mount --bind /proc /mnt/proc mount --bind /sys /mnt/sys then chroot /mnt You may need to copy the /etc/resolve.conf from your host system to kickstart networking. _OT_ For personal use and on request from others I made a flash-able img file with 4.18.16 installed. It is a bit different from the default userland-generic though: 2 partitions starting @4096 (1) boot (2) rootfs; compressed swap-space in ram. NOTE: this link may be short lived as the setup is experimental https://drive.google.com/open?id=1PvLxWVwvK9H2zJTnBF2rKlA7IDmbpa7s and my rough notes on the HC1: https://gist.github.com/markVnl/7adf25cebfdce5d5009d93b7b4caae96 _OT_ Greetings Mark > > Greetings > Andreas > _______________________________________________ > Arm-dev mailing list > Arm-dev(a)centos.org > https://lists.centos.org/mailman/listinfo/arm-dev >

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More notes on Xfce
by Robert Moskowitz 24 Oct '18

24 Oct '18

I am now connected via vnc. I am using the following for my ~/.vnc/xstartup #!/bin/sh unset SESSION_MANAGER unset DBUS_SESSION_BUS_ADDRESS # exec /etc/X11/xinit/xinitrc exec /bin/sh /etc/xdg/xfce4/xinitrc xrdb $HOME/.Xresources startxfce4 & No avahi-daemon Oct 23 11:39:29 ct-c7 yum[1950]: Installed: avahi-libs-0.6.31-19.el7.armv7hl Oct 23 11:40:09 ct-c7 yum[1950]: Installed: avahi-glib-0.6.31-19.el7.armv7hl Oct 23 11:51:35 ct-c7 journal: Failed to connect to avahi service: Daemon not running Oct 23 11:51:51 ct-c7 journal: Failed to connect to avahi service: Daemon not running But is it really needed on a server? No cups installed. That would be a separate step, I assume. No auto media mount. I insert a usb drive. I see it in /dev as sdb, but it is not showing on the desktop to mount. Seems I had this when I first installed gnome DE and then installed Xfce DE, and selected Xfce DE. Only ~/Desktop directory created. None of the other directories you tend to see for a user account. I am going to put this drive to the side and work on other stuff for now. Unless someone recommends testing some addition. Meanwhile the install of the Xfce group needs to install Base and "X Windows System" it would seem. thanks

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PHP7x SCL for aarch64
by Mark Verlinde 23 Oct '18

23 Oct '18

Hi, Are there rumors / tasks / plans for SCL packages targeted @aarch64? Found devtoolsets in buildlogs.centos.org, but {rh,sclo}PHP7x repositories are frightening empty. Thanks in advance, Mark Verlinde

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Attempt to install Xfce by hand
by Robert Moskowitz 23 Oct '18

23 Oct '18

You may have seen my posts around on my challenges to build a couple groups to do a group install. That got me to realize, that I probably know which rpms to install and I could 'do it by hand' for now. So first step was: yum install glx-utils initial-setup-gui mesa-dri-drivers plymouth-system-theme spice-vdagent xorg-x11-drivers xorg-x11-server-Xorg xorg-x11-utils xorg-x11-xauth xorg-x11-xinit xvattr tigervnc-server wayland-protocols-devel xorg-x11-drv-keyboard xorg-x11-drv-libinput xorg-x11-drv-mouse xorg-x11-drv-openchrome Where xorg-x11-drv-openchrome was not available, but is flagged optional in the group. This installed 16 packages and 263 dependents. Next the actual Xfce: yum install Thunar xfce-utils xfce4-panel xfce4-session xfce4-settings xfconf xfdesktop xfwm4 gdm leafpad openssh-askpass orage polkit-gnome thunar-archive-plugin thunar-volman tumbler xfce4-appfinder xfce4-icon-theme xfce4-power-manager xfce4-session-engines xfce4-terminal xfwm4-theme-nodoka xfwm4-themes pinentry First this showed: No package xfce-utils available. No package leafpad available. No package thunar-archive-plugin available. No package xfce4-icon-theme available. No package xfwm4-theme-nodoka available. No leafpad is OK, as a check shows that mousepad is available and this is what is in Fedora28. No xfce-utils is not good. It got worst with critical missing dependencies that need to be fixed before I could get this to work: Error: Package: xfce4-power-manager-1.4.1-4.el7.armv7hl (epel) Requires: libxfce4util.so.6 Available: libxfce4util-4.10.1-2.el7.armv7hl (epel) libxfce4util.so.6 Installing: libxfce4util-4.12.1-2.el7.armv7hl (epel) ~libxfce4util.so.7 Error: Package: xfdesktop-4.10.3-1.el7.armv7hl (epel) Requires: libxfce4util.so.6 Available: libxfce4util-4.10.1-2.el7.armv7hl (epel) libxfce4util.so.6 Installing: libxfce4util-4.12.1-2.el7.armv7hl (epel) ~libxfce4util.so.7 Error: Package: xfce4-session-4.10.1-8.el7.armv7hl (epel) Requires: libxfce4util.so.6 Available: libxfce4util-4.10.1-2.el7.armv7hl (epel) libxfce4util.so.6 Installing: libxfce4util-4.12.1-2.el7.armv7hl (epel) ~libxfce4util.so.7 Error: Package: orage-4.10.0-5.el7.armv7hl (epel) Requires: libxfce4util.so.6 Available: libxfce4util-4.10.1-2.el7.armv7hl (epel) libxfce4util.so.6 Installing: libxfce4util-4.12.1-2.el7.armv7hl (epel) ~libxfce4util.so.7 Error: Package: Thunar-1.6.3-2.el7.armv7hl (epel) Requires: libxfce4util.so.6 Available: libxfce4util-4.10.1-2.el7.armv7hl (epel) libxfce4util.so.6 Installing: libxfce4util-4.12.1-2.el7.armv7hl (epel) ~libxfce4util.so.7 Error: Package: xfce4-appfinder-4.10.1-2.el7.armv7hl (epel) Requires: libxfce4util.so.6 Available: libxfce4util-4.10.1-2.el7.armv7hl (epel) libxfce4util.so.6 Installing: libxfce4util-4.12.1-2.el7.armv7hl (epel) ~libxfce4util.so.7 Error: Package: xfce4-session-engines-4.10.1-8.el7.armv7hl (epel) Requires: libxfce4util.so.6 Available: libxfce4util-4.10.1-2.el7.armv7hl (epel) libxfce4util.so.6 Installing: libxfce4util-4.12.1-2.el7.armv7hl (epel) ~libxfce4util.so.7 Error: Package: thunar-volman-0.8.0-6.el7.armv7hl (epel) Requires: libxfce4util.so.6 Available: libxfce4util-4.10.1-2.el7.armv7hl (epel) libxfce4util.so.6 Installing: libxfce4util-4.12.1-2.el7.armv7hl (epel) ~libxfce4util.so.7 You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest I am going to have to put this on the back burner until someone can fix these. I do not have the skill sets to do it. But having Xcfe would be great for an armv7 SOC over Gnome!

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Re: [Arm-dev] Community kernel 4.18.x
by Mark Verlinde 23 Oct '18

23 Oct '18

-----Oorspronkelijk bericht----- > Afzender:Mark Verlinde <mark(a)havak.nl> > Verstuurd: Woensdag 17 Oktober 2018 18:49 > Aan: Conversations around CentOS on ARM hardware <arm-dev(a)centos.org> > Onderwerp: Re: [Arm-dev] Community kernel 4.18.x > > > -----Oorspronkelijk bericht----- > > Afzender:Pablo Sebastián Greco <pablo(a)fliagreco.com.ar> > > Verstuurd: Woensdag 17 Oktober 2018 18:09 > > Aan: Conversations around CentOS on ARM hardware <arm-dev(a)centos.org> > > Onderwerp: Re: [Arm-dev] Community kernel 4.18.x > > > > > > > > El 17/10/18 a las 11:47, Mark Verlinde escribió: > > > Hi, > > > > > > Kernel 4.18.x brings nice features, CPUFreq for Allwinner H3 SOC's being among them. > > > > > > Therefore I had a go on updating to the community-kernel-latest version 4.18.14-200.el7 which failed; > > > Dracut could not (re)build a intitramfs-4.18.14-.. and (probably because of this) uInitrd-4.18.14-.. was missing to. > > > Unfortunately did not write the exact error message down; next time will do so. > > Does /boot have enough space?, I usually try to have 3 kernels at most. > > I've been using that kernel in 3 different SoCs without problems, > > including Bananapi M3 (same SoC as the cubieboard5) > > I do not doubt it had because it was the second kernel update done (i.e would be the 3rd installed) > > However : just successfully installed with a more conservative approach 4.17.17 > 4.18.9 > 4.18.14 > Side note is: this is on a home brew image without RPI bits and peaces, 786MB boot partition with ext4 file-system. > In time I will try again with default Centos-Generic image. > > i'm happy now:) > cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor > ondemand > > > > > > > BTW: Update to Kernel 4.17.17-200.el7 was successful on my oragngepi-plus2e > > > > > > In my own interest i'd really want to help to debug this; > > > but to be able to do this i need to understand in more detail how we boot Centos on our u-boot based SBC's. > > > I got the broad picture: u-boot >> extlinux bootloader >> kernel >> > > Correct > > > Getting lost however looking at extlinux/extlinux.conf , grub/grub.conf and not knowing the content of boot.scr > > You can ignore grub.conf and boot.scr, extlinux.conf is all you need > > Sorry to persist, I'd really like to understand in more detail; > Questions circling in my head (among others) are: > Why do we have a uInitrd _and_ initramfs ? > Why do we have a uimage _and_ vmlinux ? > Why does my odroid HC1 boot with a Fedora image but not with Centos (kernel 4.14.71 nor 4.17.17)? (despite specific USB3 patches are backported to 4.14) > > > > > > > Can somebody enlighten me on this, or show me some further reading. > > > > > > (I did search fedora's arm documentation without getting smarter..) > > > > > > Actually in response to "Cubieboard5 performance" > > > (https://lists.centos.org/pipermail/arm-dev/2018-October/003515.html) > > > > > > Just a heads up, update to 4.18.16 works flawless on the above described setup on a oragngepi-plus2e. Did not find the time to test it with a default img as I'm still in a fight with the odroid HC1. For the latter the good new is: it's not an issue with the kernel but with the initramfs.

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