Linux

Below you find a description how to reduce a XFS partition. Important: This contains a full backup and restore of all data because XFS does not support shrinking. Environment Arch Linux (Kernel 5.15.82-1-lts) XFS partition on LVM (vg_root/lv_home) Workflow Boot Arch Linux from an USB drive Mount an USB disk for the backup datamount /dev/sdc1 /mnt/usb Store the UUIDblkid /dev/mapper/vg_root-lv_root > /mnt/usb/uuid Install xfsdumppacman -Sy xfsdump Mount the LVmkdir /mnt/vg_root-lv_homemount […]

Today I integrated Arch Linux into the Veeam Backup Suite and faced the following error: [04.05.2022 14:38:45.324] <140123638592000> install| >> |Failed to collect hostname [04.05.2022 14:38:45.324] <140123638592000> install| >> |–tr:in std::__cxx11::string CLinuxEpSystemInfoCollector::CollectHostName() const at /mnt/Sources/VeeamInstallerLib/veeaminstallerlib/LinuxEpSystemInfoCollector.cpp:108 Environment Arch Linux (with Kernel 5.16.16, important for veeamsnap) Veeam Agent for Linux 5.0.2.4567-1 Veeam Backup and Replication 11.0.1.1261 Solution It took a long time to figure out the problem but the solution is very

Environment UniFi Controller 6.5.55 inside a Docker container Source-Host: 192.168.20.11 Destination-Host: 192.168.20.32 Workflow Stop the Docker container on Source-Host Copy the files to the Destination-Host Start the container on the Source-Host Start the container on the Destination-Host Verify that all devices on the Source-Host are online Verify the devices on the Destination-Host, they should be offline Open the Controller on the Source-Host and change the Controller IP to the Destination-Host.

Below you find a solution if you want to make a LVM Snapshot before you install the latest Updates. Table of contents 1. Environment2. Create a Snapshot before you install the latest Update3. If the Updates don’t break your system4. If the Updates break you system 1. Environment Partition table sudo fdisk -l /dev/sda Disk /dev/sda: 40 GiB, 42949672960 bytes, 83886080 sectors Disk model: QEMU HARDDISK Units: sectors of 1

From one day to another the oVirt Management Webinterface broke with the Exception: org.springframework.dao.DataAccessResourceFailureException:Error retrieving database metadata; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.postgresql.util.PSQLException: This connection has been closed. After investigating the log file I found in “/var/log/ovirt-engine-dwh/ovirt-engine-dwhd.log” the following error: org.postgresql.util.PSQLException: ERROR: right sibling’s left-link doesn’t match: block 2 links to 1 instead of expected 4 in index “idx_vm_device_history_vm_id_type” Solution Thanks to Strahil N.,

Today I describe how to enable the high available feature in oVirt with two hosts. Normally this should be enabled during adding one host but it can also be enabled afterwards as well. Shut down or migrate all VMs for the given host Put the host into maintenance Reinstall oVirt Set Hosted Engine to “deploy” Now you should see a crown beside the hostname You can migrate the HostedEngine to

Today I had a very high CPU usage while using GPG. I found the answer inside the following ticket https://dev.gnupg.org/T3972 The high CPU usage was caused by a process like this /usr/bin/gpg –charset utf-8 –display-charset utf-8 –no-auto-check-trustdb –batch –no-tty –status-fd 2 –with-fingerprint –fixed-list-mode –with-colons –list-secret-keys ***** The reason is a huge key in ~/.gnupg/pubring.gpg. Mine was 37MB!!! Thanks to “dkg” who publish the following awk script: < ${GNUPGHOME:-~/.gnupg}/pubring.gpg gpg –list-packets