Discuss May 2021

discuss@lists.centos.org

46 participants
35 discussions

Issues booting centos7 [dracut is failing to enable centos/root, centos/swap LVs]
by Yannis Milios 01 Feb '25

01 Feb '25

Hello, I'm having a strange problem booting a new centos7 installation. Below some background on this. [I have attached the tech details at the bottom of this message] I started a new CentOS7 installation on a VM, so far all good, o/s boots fine. Then I decided to increase VM disk size (initially was 10G) to 13G. Powered off the VM, increased the vhd via the hypervisor, booted from CentOS livecd, selected "recover my centos installation". Then I used the following sequence of commands to make … [View More]the new vhd size "visible" to the o/s ... - ran fdisk /dev/sda and deleted partition 2. (This is the LVM partition where the o/s is stored. The first partition is /boot [xfs] partition *non lvm*.) - created a new partition with same starting sector as before deleting it, but a different ending sector (to reflect to the increased space). - set partition type to 8e (lvm), saved settings and exit. - ran pvresize and lvresize to make new space visible to the o/s.All good, I can see the space increase on 'lvdisplay centos/root'. - ran 'mount /dev/mapper/centos-root /mnt/root' to temporarily mount the o/s partition. - ran 'xfs_growfs /mnt/root' to resize the o/s fs to the new size. It was successful and I could actually chroot to the o/s and verify new disk size. - rebooted and tried to boot from hdd this time. Grub menu shows up and loads default kernel (3.10.0-862.9.1.el7.x86_64). - after initial kernel boot up process, booting continues to initrd and then it's where the problem starts... - looks like dracut has issues locating/enabling /dev/mapper/centos-root (lv) and as a result it cannot boot to the 'real' root fs (/). - while in dracut shell, I execute the following command sequence: 1. lvm lvchange -ay /dev/centos/root 2. lvm lvchange -ay /dev/centos/swap 3. ln -s /dev/mapper/centos-root /dev/root 4. exit ...and the o/s boots fine...so looks like the pv,vg,lv is detected properly while in initrd, but somehow dracut has difficulties enabling the root,swap LVs ? - While in o/s, I rebuild initrd by using: 'dracut -f -v -a lvm' Note, I have to use '-a lvm' as for some reason, if don't, the lvm utils (lvm,lvm_scan) are not being included to the initrd, not sure why this happens. After rebooting, same thing happens, I have to manually boot the system via dracut shell. I'm a bit stuck at this point, any clues what I'm doing wrong in here ? As I previously said, this is a new installation, so I could simply reinstall the whole thing, but I would rather try to find out some answer to why is this happening ... :-) [curiosity] Some additional details: ================== I've attached /run/initramfs/rdsosreport.txt file [generated while in inird] here: https://privatebin.net/?fdc4052c0c402884#gdB/QYR3IeR55SxUbjfrkZPQfJ7jMxiUxq… o/s ver=CentOS Linux release 7.5.1804 (Core) [root@localhost ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 13G 0 disk ├─sda1 8:1 0 500M 0 part /boot └─sda2 8:2 0 12.5G 0 part ├─centos-root 253:0 0 11.5G 0 lvm / └─centos-swap 253:1 0 1G 0 lvm [SWAP] [root@localhost ~]# cat /etc/default/grub GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rd.shell rhgb" GRUB_DISABLE_RECOVERY="true" [View Less]

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MATE 1.20 test build for CentOS 7 available
by Greg Bailey 14 Oct '21

14 Oct '21

Hi everyone, There's been discussions in the past about updating MATE RPMs in EPEL-7: https://bugzilla.redhat.com/show_bug.cgi?id=1436260 https://lists.centos.org/pipermail/centos/2019-August/173154.html (and lots of others...) As a proof-of-concept, I've written some scripts that clone specific commits from the Fedora master branches, and then runs a tool to re-apply RPM scriptlets that are required by EL7 but removed from the Fedora .spec files. The scripts are available at: https://… [View More]

6 17

Transition test report going from CentOS8 to Debian 10.
by Lamar Owen 06 Aug '21

06 Aug '21

Sorry for the length.... I'm posting this here since this particular transition has been mentioned on-list as one possibility for a path forward for current CentOS Linux users. AlmaLinux, the Developer Subscription RHEL, Rocky, CentOS Stream, Springdale, upgrading to full RHEL; all these are also possibilities, too, and all have different strengths and weaknesses. The transition to Debian has a lot of strengths, including a long track-record of support (even if the support … [View More]time for a particular release is shorter), a fully-open development model with no 'corporate overlord' that I know of, a large set of supported packages, and a huge community of developers and users. For the CentOS user the main weakness is having to learn a few areas of difference in the way the system is setup and maintained; of course, if a ten-year 'stable' timeframe is really that important to you the lack of that is also a weakness. So, last week I transitioned, as a test of sorts, my working CentOS 8 main laptop to Debian 10. I kept a complete backup of the C8 install should I wish to go back to it, and installed Buster to a new mSATA SSD, but ported the two SATA drives (Dell Precision M6700 - has an mSATA slot plus two SATA bays) straight over after making full backups. I posted a pretty complete rundown on the scientific linux users mailing list, so I won't recap it all here. The bottom line was the the transition was not any more difficult, really, than moving from CentOS 7 to CentOS 8. The software versions in Buster are pretty close to what is in CentOS 8, although I have yet to need any third-party repository (PPA) for anything I've needed to install. All the packages I have worked with so far have worked fine with a little bit of massaging. These include commercial (and costly) software such as Harrison Consoles' Mixbus32C, Qoppa's PDFStudio2019 Professional, and others. So if you were to decide that this is the route for you to take, it does work and I found it to be not nearly as hard as I had thought it might be. If you install GNOME 3 you get GNOME 3; it feels pretty much the same as a non-Classic CentOS GNOME 3, just with a different set of extensions installed by default. That's on the workstation. On the server side, I'm evaluating Proxmox for the virtualization solution, and so far I'm finding it to be a pretty easy migration. I'm using the 'non-subscription' repository, so this is a no-cost option. Even getting the box registered to our EMC Clariion SAN was relatively easy; EMC provides the Unisphere Server Utility for Linux x64 in RPM form; the latest I have is "ServerUtil-Linux-64-x86-en_US-1.0.55.1.0044-1.x86_64.rpm" (which is fairly old, but I did say Clariion arrays, so they're pretty old, too). Debian has provided the 'alien' tool for some time; after installing alien, a simple 'alien -i ServerUtil-Linux-64-x86-en_US-1.0.55.1.0044-1.x86_64.rpm' installed the EMC RPM in the correct place. Proxmox already included everything that serverutilcli requires; on a plain Buster install I had to install dm-multipath and the device mapper libraries and tools before serverutilcli would find the arrays; but it ran just like it did on CentOS 8 (and 7). I haven't decided whether to stay on Debian or not; too early to tell. I have time to test and evaluate. My CentOS 7 installs aren't goin anywhere, though, at least until late 2023. And I've registered for a Developer subscription of RHEL so that I can properly evaluate that option, too. This is the beauty of open source: we have OPTIONS. [View Less]

11 23

Centos versions in the future?
by Carlos Oliva 09 Jul '21

09 Jul '21

Will there be newer versions of Centos? We have heard rumors that version 8 will be the last one. We are concerned with using an OS that will loose support in the future. Thank you.

29 107

Fwd: Pre-announcement of an ISC DHCP security issue scheduled for disclosure 26 May 2021
by Kenneth Porter 07 Jun '21

07 Jun '21

-------- Forwarded Message -------- Subject: Pre-announcement of an ISC DHCP security issue scheduled for disclosure 26 May 2021 Date: Fri, 21 May 2021 11:44:19 -0800 From: Michael McNally <mcnally(a)isc.org> To: dhcp-announce(a)lists.isc.org Hello, dhcp-announce list subscribers, It has been a while since our last post to this list. Since the last time we posted news of a new release of ISC DHCP, Internet Systems Consortium has adopted a practice of pre-announcing expected … [View More]

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Mirrors Sync
by Tristan Santore 01 Jun '21

01 Jun '21

Dear All, Is there an issue with some mirrors not syncing properly ? My colleague is reporting , that some mirrors are receiving updates and others are not receiving packages. Some are, according to him, are not receiving updates since March. Is there an issue at the moment ? Any information is very welcome. If you need further information, please ask and I will assists as much as I can. Thank you. Regards, Tristan -- Tristan Santore BSc MBCS TS4523-RIPE Network and Infrastructure … [View More]

2 1

CentOS 7 getssl script
by Jerry Geis 31 May '21

31 May '21

I am using the getssl script to add a certificate to my server. The script is automatically adding a SANS www.myserver.com when I do not have a www.myserver.com - just simply the myserver.com How can I tell getssl to "not add that SANS" entry ? Thanks, Jerry

2 1

where to get reliable/open source license manager
by qw 29 May '21

29 May '21

Hi, I have developped one python application. I need open source license server to manage the app via local network. Where can I get this kind of open source project? Thanks! Regards Andrew

6 7

kmod removal
by Emmett Culley 29 May '21

29 May '21

Sometime ago I thought I needed kmod-wl to support a new wireless card. Turns out I didn't need to do that. Now I'd like to remove kmod entirely. But when I try I get this: [root@ws1 etc]# dnf remove kmod Error: Problem: The operation would result in removing the following protected packages: systemd-udev (try to add '--skip-broken' to skip uninstallable packages) I am sure I don't want to remove systemd-udev, so I am a loss. I did disable akmods: systemctl disable akmods But I still … [View More]

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OpenSSH 8.6/8.6p1 on CentOS Linux release 7.9.2009 (Core)
by Kaushal Shriyan 26 May '21

26 May '21

Hi, I am running openssh-server-7.4p1-21.el7.x86_64 on CentOS Linux release 7.9.2009 (Core). Is there a plan to introduce OpenSSH 8.6/8.6p1 version on CentOS Linux release 7.9.2009? #cat /etc/redhat-release CentOS Linux release 7.9.2009 (Core) #rpm -qa | grep -i ssh openssh-clients-7.4p1-21.el7.x86_64 libssh2-1.8.0-4.el7.x86_64 openssh-7.4p1-21.el7.x86_64 openssh-server-7.4p1-21.el7.x86_64 # Please guide. Thanks in advance. More Info:- https://www.openssh.com/releasenotes.html Best Regards, Kaushal

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Discuss May 2021