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Month: April 2016

How to Extend Subnet Allocation Pool in OpenStack

April 25, 2016June 1, 2016 No Comments

After OpenStack installation it can turn out, that the IP allocation pool of the subnet, we have just created is too small. If the allocation pool refers to public / provider network, we will quickly run out of free Floating […]

Grzegorz Juszczak Cloud Computing

Encrypt Linux Partition using LUKS cryptsetup

April 21, 2016February 23, 2018 No Comments

LUKS (Linux Unified Key Setup) is encryption standard designed for Linux to encrypt Linux volumes or partitions. The implementation of LUKS is based on cryptsetup script as a basic disk encryption backend tool. In this tutorial we will create Linux […]

Grzegorz Juszczak Linux, Security

Extend LVM Volume Group with the new Hard Disk

April 9, 2016April 10, 2016 No Comments

One of the benefits of LVM (Logical Volume Manager) is the possibility to extend LVM based storage by adding new Physical Volumes which together form LVM Volume Group. Adding new Physical Volume increases the capacity of the whole Volume Group […]

Grzegorz Juszczak Linux, Storage

Backup and Restore Logical Volume using LVM Snapshot

April 9, 2016April 11, 2016 No Comments

LVM (Logical Volume Manager) gives us the ability to create Snapshots. LVM Snapshot is a logical volume that temporarily preserves the original data of changing logical volume, so it’s data can be backed up preserving consistency. Snapshot must be created […]

Grzegorz Juszczak Linux, Storage

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