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Centos8: Glusterd do not start correctly when I startup or reboot all server together
by Dario Lesca 02 Oct '20

02 Oct '20

I have install and configure on two server centos8 glusterfs in replica mode in this manner: dnf install centos-release-gluster -y dnf install glusterfs-server glusterfs glusterfs-fuse -y systemctl enable --now glusterd gluster peer probe virt1 gluster peer status sh creavolume.sh gfsvol1 301G /gfsvol1 xfs # NOTE: this is a my shell script to create fs on lvm mkdir /gfsvol1/brick1 gluster pool list gluster volume create gfsvol1 replica 2 virt1:/gfsvol1/brick1 virt2:/gfsvol1/brick1 force gluster volume start gfsvol1 gluster volume info gfsvol1 gluster volume status gfsvol1 gluster volume heal gfsvol1 # add to /etc/fstab vi /etc/fstab virt1:/gfsvol2 /virt-gfs glusterfs defaults,noatime,_netdev 0 0 mkdir /virt-gfs mount -a All work fine but when I start or restart all server together glusterd server start but if I try mount the volume, gluster is not working. At this point if I restart the glusterd service and run "mount -a" all work fine. Seem is a boot network problem Then I have try modify glusterd.service with $ sudo systemctl edit glusterd.service --full And modify the unit in this way: #old < After=network.target < Before=network-online.target #new > After=network.target network-online.target > #Before=network-online.target Now all work fine, mostly when I start or restart all server together. There is another solution or this is a Bug? Many thanks for your suggest -- Dario Lesca (inviato dal mio Linux Fedora 32 Workstation)

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Laptop display issue
by H 02 Oct '20

02 Oct '20

I now have an older laptop with a display problem. I installed Centos 7 on it in February and had to install the xorg-x11-drv-ati and evdev drivers because the docking station has an ATI Radeon card. Everything worked fine with a dual display setup. I probably after that ran a system update but did not reboot while in this office. Today, when I got to the office again for the first time in seven months it does not boot into the desktop but fails after displaying ”Started Light Display Manager” with a mouse pointer on one display that can be moved but no desktop at all. The keyboard works and I can start a terminal session. If I remove the laptop from the docking station everything works as expected but not in the station, presumably because it now uses the docking station card. Futzing around I see that systemctl --failed lists nothing, nor did dmesg immediately suggest a reason. In the yum history I see that this driver was updated to 19.0.1-3 from the 19.0.1-2 that installed with. Yum downgrade to 19.0.1-2 did not change the issue. Nor has booting an older kernel helped so far. Although when I remove quiet from the grub command line it seems to stop after ”Started Load CPU microcode update” following the ”Started Light Display Manager” already mentioned, I strongly suspect some issue with the graphics driver. Since the computer boots and seems to run fine with the internal display when removed from the docking station it seems that there are no hardware issues in the unit itself. My understanding is that the ATI driver can be a problem and needs to match the kernel etc - perhaps there is something wrong here? Any suggestions for how to attack this? I need to use it in the docking station and have no alternative. Thank you.

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No sound after latest Firefox update (firefox-78.3.0-1.el6.centos.x86_64)
by Robert Nichols 02 Oct '20

02 Oct '20

With Firefox updated to firefox-78.3.0-1.el6.centos.x86_64, I cannot get sound from Firefox. I've tried restarting pulseaudio, also logging out and logging back in. No help. Other A/V apps work just fine. Downgrading to firefox-68.12.0-1.el6.centos.x86_64 makes sound work again. For now, I've excluded version firefox-78.3.0-1 from yum updates. Anyone else seeing this? Any hints? -- Bob Nichols "NOSPAM" is really part of my email address. Do NOT delete it.

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CentOS 7 (2009) in progress
by Johnny Hughes 30 Sep '20

30 Sep '20

OK all .. RHEL 7.9 source code updated today. I am currently working to start the build of CentOS 7 based on that [CentOS 7 (2009) ]. Currently, we need to bootstrap and then build llvm-toolset-9.0 and rust-toolset-1.41 as some of the released packages need those toolsets. I also need to check devtoolset-7 and devtoolset-8 and see if we need any updates to pacakges there before we start the main build .. and I need to see of any of the packages need devtoolset-9. Once we have all those prerequisites completed, I can start the main builds. The goal, as usual, is to get the CR repo populated in 7 to 10 days: https://wiki.centos.org/AdditionalResources/Repositories/CR And the final release completed in less than 40 days. Thanks, Johnny Hughes

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Using CentOS 7 to attempt recovery of failed disk
by Jerry Geis 28 Sep '20

28 Sep '20

I have a disk that is flagging errors, attempting to rescue the data. I tried dd first - if gets about 117G of 320G disk and stops incrementing the save image any more. Now I'm trying ddrescue and it also stops about the same point Thoughts on how to continue past that point ? Thanks, Jerry

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JFS for CentOS 7
by H 28 Sep '20

28 Sep '20

I had installed kmod-jfs in an earlier version of CentOS 7, 7.4 if I remember correctly. I now have a machine running the latest version of jfs module but kmod-jfs does not seem to be available. Is anyone running it on the current version of CentOS?

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Question regarding cent OS 7.8.2003 compatibility with large SAS disks
by Amey Abhyankar 25 Sep '20

25 Sep '20

Hello, I have a blade server with SAS HDD's of 12TB in total. 3 HDD's of 4TB each. Is it possible to install Cent OS 7.8.2003 on 12TB disk space? I will be installing Cent OS on the bare metal HW. I referred = https://wiki.centos.org/About/Product But slightly confused with the 'maximum file size' row for ext4 FS. Thanks & Regards, Amey.

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system sounds
by R C 25 Sep '20

25 Sep '20

Hello, after an update, Centos 7, I don't have any system sounds anymore? Sound works, for video etc. (sound left/right speaker test works) is there a setting that I am missing that somehow got messed up? thanks, Ron

1 0

C8 - Register with Red Hat
by Gregory P. Ennis 25 Sep '20

25 Sep '20

Everyone, I am still in the low end of the learning curve with Centos 8, and keep getting warning messages to register with Red Hat. Is this a requirement for C8. I do not have a user ID with Red Hat; will they give a user ID for a Centos user. "This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register." Thanks, Greg Ennis

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Systemd service unit file needs to wait until a specific interface is up
by Carlos Lopez 24 Sep '20

24 Sep '20

Hi all, With SystemD, how can I make certain service dependent on certain network interfaces being up? For example, I have an 802.1ad bond interface I need to wait on for being up (this interface has no ip address assigned, it is used to capture networks packets with a tcpdump’s script). Every time this service fails because bond interface is not up. I have configured the service as: [Unit] Description=tcpdump capture script After=network.target Wants=network-online.target But it doesn’t work …. Any tip or trick? My host is CentOS8 x86_64. Regards, C. L. Martinez

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