Igalia has many years of experience with the QEMU project and is one of its most active corporate contributors. We have worked on QEMUâs block layer by adding features and fixing problems for cloud scenarios, and have also worked on the emulation of new hardware.
We have made many upstream contributions to the I/O layer and in particular to qcow2, QEMUâs native file format. These contributions include:
Improved caching algorithm, to increase the performance and reduce the memory requirements.
Group-based I/O limits for virtual hard drives.
Configurable I/O bursts in a way similar to Amazonâs Elastic Block Storage.
Extended I/O accounting features, allowing the user to obtain better statistics of a VMâs disk usage.
And many other features and performance improvements.
In addition to that, Igalia has experience in other areas such as UEFI secure boot, virtio drivers and the emulation of new hardware boards and a new bus (IndustryPack).
CephIgalia contributes code upstream to the Ceph project and other cloud technologies.
We have contributed to the RADOS gateway. Some examples include, the AWS4 S3 authentication algorithm and the AWS S3 requester pays bucket. Igalia has also worked on the integration of Apache Libcloud and Ansible with Ceph.
Beyond designing, developing and upstreaming new code features in the upcoming Ceph releases, Igalia works on bugfixing tasks, backporting, interoperability issues and daily code maintenance together with the required QA and testing efforts.
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