blog
Table des matières
3 billet(s) pour janvier 2026
| Notes rsh rcp | 2026/01/21 18:08 | Jean-Baptiste |
| Git - Duplication d'un dépôt | 2026/01/19 10:22 | Jean-Baptiste |
| Exemple simple de conf Nagios | 2026/01/14 10:07 | Jean-Baptiste |
Pb Docker Podman
Err cannot set user namespace
$ podman ps cannot set user namespace
Solution
mv /tmp/podman-run-1000 /tmp/podman-run-1000-bak
Pb Docker - device is busy - error response from daemon driver devicemapper failed to remove root filesystem
Source : https://github.com/moby/moby/issues/27381
Pb
# docker rm -f c67056cc52ec Error response from daemon: driver "devicemapper" failed to remove root filesystem for c67056cc52ec0053f08e3bb847ac9c5ec0617bfe99056e0a3371410c80ac9921: failed to remove device 986d057a397700ab66df675365e53c2e8e6b129cc743bbc3bb6e9cc92510e 58e: Device is Busy # rm -rf /var/lib/docker/devicemapper/*/*e58e* rm: impossible de supprimer « /var/lib/docker/devicemapper/mnt/986d057a397700ab66df675365e53c2e8e6b129cc743bbc3bb6e9cc92510e58e »: Périphérique ou ressource occupé
Solution
# find /proc/*/mounts |xargs grep 986d057a397700ab66df675365e53c2e8e6b129cc743bbc3bb6e9cc92510e58e grep: /proc/10975/mounts: Aucun fichier ou dossier de ce type /proc/14426/mounts:/dev/mapper/docker-254:2-183267-986d057a397700ab66df675365e53c2e8e6b129cc743bbc3bb6e9cc92510e58e /var/lib/docker/devicemapper/mnt/986d057a397700ab66df675365e53c2e8e6b129cc743bbc3bb6e9cc92510e58e ext4 rw,relatime,stripe=16,data=ordered 0 0 # ps -p 14426 PID TTY TIME CMD 14426 ? 00:00:00 cupsd # kill 14426 # docker rm c67056cc52ec
Notes
LANG=C dmsetup remove docker-254:2-183267-986d057a397700ab66df675365e53c2e8e6b129cc743bbc3bb6e9cc92510e58e device-mapper: remove ioctl on docker-254:2-183267-986d057a397700ab66df675365e53c2e8e6b129cc743bbc3bb6e9cc92510e58e failed: Device or resource busy dmsetup info -c docker-254:2-183267-986d057a397700ab66df675365e53c2e8e6b129cc743bbc3bb6e9cc92510e58e
La technique suivante n'a pas fonctionné https://askubuntu.com/questions/429612/device-mapper-remove-ioctl-on-luks-xxxx-failed-device-or-resource-busy
$ sudo dmsetup ls luks-xxxxx (252:1) $ sudo lsof |grep 252,1 $ kill -9 1523
Pb DNS resolution - systemd-resolved - timeout short name
$ host www.acme.fr www.acme.fr has address 192.168.1.100
$ time host plop ;; connection timed out; no servers could be reached real 0m10.033s user 0m0.009s sys 0m0.005s
$ systemd-resolve www.acme.fr
www.acme.fr: 192.168.1.100
(www.acme.fr)
-- Information acquired via protocol DNS in 1.7ms.
-- Data is authenticated: no
$ systemd-resolve plop plop: resolve call failed: All attempts to contact name servers or networks failed
Solution
Désactiver LLMNR
/etc/systemd/resolved.conf.d/dns_servers.conf
[Resolve] LLMNR=no
Autres
journalctl -u systemd-resolved.service -f
Pb disque invisible sur HP Proliant disque invisible lors de l'install système RedHat7
Source : Are cciss controllers supported in Red Hat Enterprise Linux 7?
Contrôleur RAID : HP Smart Array E200i controller
Pour que le disque soit vu au boot lors de l'install OS.
Argument à passer au noyaux au boot :
hpsa.hpsa_allow_any=1
Pb disparition flèche ascenseur GTK Ubuntu
Source : http://askubuntu.com/questions/34214/how-do-i-disable-overlay-scrollbars
- ~/.gtkrc-2.0
style "default" { engine "murrine" { stepperstyle = 0 } }
- ~/.config/gtk-3.0/gtk.css
.scrollbar { -GtkScrollbar-has-backward-stepper: 1; -GtkScrollbar-has-forward-stepper: 1; }
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