Tag: drbd

Clustered LVM on DRBD resource in Fedora Linux

As Florian Haas has pointed out in my previous post's comment, our shared storage configuration requires special precautions to avoid corruption of data when two hosts connected via DRBD try to manage LVM volumes simultaneously. Generally, these precautions concern locking LVM metadata operations while running DRBD in 'dual-primary' mode. Let's examine it in detail. The LVM locking mechanism is configured in …

Shared storage for OpenStack based on DRBD

Storage is a tricky part of the cloud environment. We want it to be fast, to be network-accessible and to be as reliable as possible. One way is to go to the shop and buy yourself a SAN solution from a prominent vendor for solid money. Another way is to take commodity hardware and use open source magic to turn …

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