LVM: DEVICE /DEV/SDX EXCLUDED BY FILTER If you have created a new VD using a disk or group of disks that were previously partitioned, you may see a message like this when you try to initialize the virtual disk for LVM. # pvcreate /dev/sdd Device /dev/sdd excluded by a filter. If filter is correct (/etc/lvm/lvm.conf) and old partition table information […]

Cockpit packages

Package Name Purpose cockpit-docker Managing Docker Containers cockpit-kubernetes Visualizing and Configuring Kubernetes Cluster cockpit-machines Manage KVM Virtual Machines cockpit-sosreport Create diagnostic report with the sosreport tool cockpit-selinux Troubleshoot SELinux Issues cockpit-kdump Configure Kernel Crash Dumps cockpit-subscriptions Manage System subscription cockpit-machines-ovirt Manage oVirt Virtual Machines cockpit-pcp Reading PCP metrics and Loading PCP archives

Disk > Mdadm > LVM

lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT mdadm -D /dev/md127 watch cat /proc/mdstat # Create vg1 vgcreate vg1 /dev/md127 # Create lg disk lvcreate -L 150M vg1 -n lv1lvcreate -L 150M vg1 -n lv2lvcreate -L 150M vg1 -n lv3 lvs lvdisplay mkfs.ext4 /dev/vg1/lv1 mkfs.ext4 /dev/vg1/lv2 mkfs.ext4 /dev/vg1/lv3 mkdir /home/lv1 && mount /dev/vg1/lv1 /home/lv1 mkdir /home/lv2 && mount /dev/vg1/lv2 /home/lv2 […]

How to Backup AWS S3 Buckets The S3 Backup Challenge When migrating a large file system to AWS S3, One of the surprising challenges is the implementation of a backup strategy.  With file-system based storage, you often back up the disk with periodic snapshots (daily, weekly, monthly, etc).   There is comfort in knowing that you have a plethora of time capsuled copies stored away and, in […]