Discuss September 2023

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8 participants
4 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 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"

4 11

Problem: cannot install the best update candidate for package pki-servlet-engine-1:9.0.30-3.module_el8.5.0+854+e1c92b81.noarch
by Jelle de Jong 01 Oct '23

01 Oct '23

Hello everybody, What might be going wrong here? Is there an upstream bug report? How to proceed? # yum update --refresh CentOS Stream 8 - AppStream 10 kB/s | 4.4 kB 00:00 CentOS Stream 8 - BaseOS 45 kB/s | 3.9 kB 00:00 CentOS Stream 8 - Extras 11 kB/s | 2.9 kB 00:00 CentOS Stream 8 - Extras common packages 57 kB/s | 3.0 kB 00:00 CentOS Stream 8 - PowerTools 19 kB/s | 4.4 kB 00:00 Extra Packages for Enterprise Linux 8 - x86_64 113 kB/s | 32 kB 00:00 Extra Packages for Enterprise Linux 8 - Next - x86_64 422 kB/s | 32 kB 00:00 Error: Problem: cannot install the best update candidate for package pki-servlet-engine-1:9.0.30-3.module_el8.5.0+854+e1c92b81.noarch - both package tomcat-el-3.0-api-1:9.0.62-12.el8.noarch from appstream and tomcat-lib-1:9.0.62-12.el8.noarch from appstream obsolete pki-servlet-engine - package tomcat-jsp-2.3-api-1:9.0.62-12.el8.noarch from appstream requires tomcat-servlet-4.0-api = 1:9.0.62-12.el8, but none of the providers can be installed - package tomcat-lib-1:9.0.62-12.el8.noarch from appstream requires tomcat-servlet-4.0-api = 1:9.0.62-12.el8, but none of the providers can be installed - package tomcat-servlet-4.0-api-1:9.0.62-12.el8.noarch from appstream is filtered out by modular filtering (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages) Kind regards, Jelle de Jong

2 4

old website keep reappering in /var/www/html
by Marco Fioretti 27 Sep '23

27 Sep '23

Greetings, absurd subject, but I don't know how else I could describe what is happening. I have a small static website hosted on a Centos 7 VPS (that I'll update as soon as possible, but what follows is much more urgent, I must absolutely fix it asap). The website is generated by Hugo. I run hugo on my computer, then rsync everything on the server, in the /var/www/html/hugo/MYWEBSITE folder. Everything worked great for years. This week I rebuilt the whole website almost from scratch, using a different hugo theme and updating many pages. Then I ran rsync, checked the new website in my browser, jumping from page to page, and everything worked as expected: new theme, new content, new menus, everything. 2/3 minutes later, the OLD website reappeared, all of it, as if I had not ran rsync at all. For example, in the new website there is a new subfolder called "bio", that did not exist in the old version. If I ssh to the server, cd to /var/www/html/hugo/MYWEBSITE and run "ls -l" RIGHT AFTER running rsync, I see the "bio" subfolder. If I do "ls -l" 3 minutes later, the "bio" subfolder is no more. I have repeated the rsync process 5/6 times before writing this email, and it's always the same. Every time I rsync, what I uploaded lasts 2/3 minutes, then the WHOLE folder on the server is erased and refilled with the previous full version of the website. It's as if there were some hidden cron job somewhere that runs hugo on the OLD source files, but I can't find it. All the standard methods one can find by googling "how to list all cron jobs" don't show anything that may be the reason. THANKS in advance for any help, Marco

5 5

ThinkPad battery calibration on CentOS 8
by Toralf Lund 12 Sep '23

12 Sep '23

Hi Does anyone know of a way to recalibrate the battery on a ThinkPad laptop under CentOS Stream 8? I did this on the same machine before, but I can't recall exactly how. And maybe I was on CentOS 7 at the time. I know about the "tlp" command, but I haven't had much luck with it so far, as shown here: $ sudo tlp recalibrate BAT1 Setting temporary charge thresholds for BAT1: start = 96 (no change) stop = 100 (no change) Error: battery discharge/recalibrate not available. Also, "tlp-stat" says (after displaying status values etc.) +++ Recommendations * Install acpi_call kernel module for ThinkPad battery recalibration I can't seem to find an easy way to install the module in question, though. I also seem to remember that there was a different tool as well, but I've forgotten its name, and a web search returns little of use... Any ideas? - Toralf

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Discuss September 2023