Discuss September 2020

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70 participants
52 discussions

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

6 11

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?

3 5

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.

6 7

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

9 16

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

6 9

nmcli: unwanted secondary ip-address
by Felix Kölzow 24 Sep '20

24 Sep '20

Dear CentOS-Community, we are facing the following issue: A secondary ip address seems to be automatically added to a nic which causes several issues in our setup. This server is equipped with four nics which are currently in use: # nmcli con show NAME UUID TYPE DEVICE eno2 cb6fcb54-be52-4ab6-8324-88091a0ea1a0 ethernet eno2 eno4 dbd95c24-1ed7-4292-8dba-3934bd1476a0 ethernet eno4 eno1 1e382037-fec9-493d-a4f2-ace7d73a1e7b ethernet eno1 eno3 bea2db0f-d366-4f1b-bec8-4fbfb3c0b6d2 ethernet eno3 enp5s0f0 23f56b9f-4625-471e-9ce4-6fe7b8832310 ethernet -- enp5s0f1 f25b9a10-1584-4233-89dd-2dda7c774f0d ethernet -- From time to time, a secondary ip-address is assigned to an interface as show below: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 3: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:26:b9:78:87:d1 brd ff:ff:ff:ff:ff:ff inet 192.168.1.90/24 brd 192.168.1.255 scope global noprefixroute eno1 valid_lft forever preferred_lft forever inet6 fe80::226:b9ff:fe78:87d1/64 scope link valid_lft forever preferred_lft forever 4: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:26:b9:78:87:d3 brd ff:ff:ff:ff:ff:ff inet 10.10.100.205/24 brd 10.10.100.255 scope global noprefixroute eno2 valid_lft forever preferred_lft forever inet 10.10.100.72/24 brd 10.10.100.255 scope global secondary dynamic eno2 valid_lft 56158sec preferred_lft 56158sec inet6 fe80::226:b9ff:fe78:87d3/64 scope link valid_lft forever preferred_lft forever 5: eno3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:26:b9:78:87:d5 brd ff:ff:ff:ff:ff:ff inet 192.168.4.11/24 brd 192.168.4.255 scope global noprefixroute eno3 valid_lft forever preferred_lft forever inet6 fe80::e98b:e064:50d2:535d/64 scope link noprefixroute valid_lft forever preferred_lft forever 6: eno4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:26:b9:78:87:d7 brd ff:ff:ff:ff:ff:ff inet 192.168.2.98/24 brd 192.168.2.255 scope global noprefixroute eno4 valid_lft forever preferred_lft forever inet *192.168.137.223/24* brd 192.168.137.255 scope global dynamic eno4 <<----- THIS IS UNWANTED valid_lft 604778sec preferred_lft 604778sec inet6 fe80::9257:5654:b211:8dea/64 scope link noprefixroute valid_lft forever preferred_lft forever 7: enp5s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000 link/ether 00:15:17:59:96:44 brd ff:ff:ff:ff:ff:ff 8: enp5s0f1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000 link/ether 00:15:17:59:96:45 brd ff:ff:ff:ff:ff:ff 11: wwp0s29f7u1i4: <POINTOPOINT,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/none Furthermore, systemctl status NetworkManager says: systemctl status NetworkManager ● NetworkManager.service - Network Manager Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled) Active: active (running) since Mon 2020-09-21 17:25:21 CEST; 17h ago Docs: man:NetworkManager(8) Main PID: 1752062 (NetworkManager) Tasks: 3 (limit: 204496) Memory: 8.2M CGroup: /system.slice/NetworkManager.service └─1752062 /usr/sbin/NetworkManager --no-daemon NetworkManager[1752062]: <info> [1600751941.1341] agent-manager: agent[0047d0145168a5f3,:1.4726/nmcli-connect/0]: agent registered NetworkManager[1752062]: <info> [1600751941.1360] device (eno4): Activation: starting connection 'eno4' (dbd95c24-1ed7-4292-8dba-3934bd1476a0) NetworkManager[1752062]: <info> [1600751941.1361] audit: op="connection-activate" uuid="dbd95c24-1ed7-4292-8dba-3934bd1476a0" name="eno4" pid=31215> NetworkManager[1752062]: <info> [1600751941.1363] device (eno4): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed') NetworkManager[1752062]: <info> [1600751941.1371] device (eno4): state change: prepare -> config (reason 'none', sys-iface-state: 'managed') NetworkManager[1752062]: <info> [1600751941.1523] device (eno4): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed') NetworkManager[1752062]: <info> [1600751941.1552] device (eno4): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed') NetworkManager[1752062]: <info> [1600751941.1582] device (eno4): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed') NetworkManager[1752062]: <info> [1600751941.1586] device (eno4): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed') NetworkManager[1752062]: <info> [1600751941.1637] device (eno4): Activation: successful, device activated. This behaviour is really! unwanted. What is the reason for this behavior. Packages like keepalived or ctdb are not installed on this machine. Any help is appreciated how to figure out the reason for this behavior. Thanks in advance. Felix

4 9

Chromium 85 does not load any pages
by H 24 Sep '20

24 Sep '20

I just upgraded chromium on my CentOS 7 system and ended up with nothing loading. I tried to downgrade using yum downgrade chromium but there does not seem to be an older version on my system, nor does EPEL seem to have version 84 which is what I ran before. First, does anyone know why chromium 85 does not load /anything/? Firefox runs fine. Second, why is chromium 84 not available in EPEL? Thanks.

4 8

ZFS and encryption on CentOS 7
by H 23 Sep '20

23 Sep '20

Can I ask what the prevailing opinion is on ZFS and encryption on CentOS 7? Is encryption in ZFS stable? If so, I would use it on a new naked drive I just added. If not, I might stick with LUKS and XFS for now. The drive is a 2 Tb SSD. Thanks.

1 0

Forefox on C7 - uses wrong program to view download folder
by Gary Stainburn 23 Sep '20

23 Sep '20

I've got a C7 laptop using the default repo's (installed plus epel). My firefox has decided to use the wrong program to view the downloads folder. If I download and save a file, then click on the Downloads icon and click on view folder containing the file, it opens the MP3 editor EasyTag instead of Dolphin or Konquror. How do I change it back.

1 0

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Discuss September 2020