SNIA Developer Conference September 15-17, 2025 | Santa Clara, CA
Adam Manzanares
Technical Staff
Dell Technologies
Mukesh Gupta is a storage veteran who has been working in the industry for 20+ years & associated with Dell-EMC for most of this time. He got his Bachelors in Engineering from Netaji Subhas Institute of Technology, one of the prestigious institutions in India, & followed it up with Masters in Computer Science from Boston University. Mukesh is currently a network architect responsible for enabling NVMeoF technologies in PowerStore.
Related Sessions
Flexible Data Placement Open Source Ecosystem
Flexible Data Placement (FDP) represents the latest development in mainstream data placement technology for NVMe. Although its use-cases resemble those of other NVMe features, such as Streams and ZNS, the differences have significant implications for the implementation within host storage stacks and applications. As host stacks adopt various data placement technologies, the risk of bloated codebases and redundant implementations rises, increasing maintenance costs for large mainline projects. In this presentation, we discuss the efforts to integrate FDP support in Linux, ranging from QEMU emulation to different I/O paths (e.g., Linux Kernel I/O Passthru, SPDK), libraries (e.g., xNVMe), and tools (e.g., fio, nvme-cli). We highlight the design decisions made to enable early adoption without depending on major Linux kernel block layer changes. Additionally, we provide an overview of the FDP stack implementation in two example applications: Cachelib and RocksDB. We use these examples to look at WAF behaviour as well as evaluate the engineering efforts of adoption.
Emulating CXL® with QEMU
In order to develop open source CXL ecosystem software it has proven useful to emulate CXL features within the QEMU project. In this talk, I will introduce the current major CXL features that QEMU can emulate and walk you through how to set up a Linux + QEMU CXL environment that will enable testing and developing new CXL features. In addition, I will highlight some of the limitations of QEMU CXL emulation.
Emulating CXL with QEMU
In order to develop open source CXL ecosystem software it has proven useful to emulate CXL features within the QEMU project. In this talk, I will introduce the current major CXL features that QEMU can emulate and walk you through how to set up a Linux + QEMU CXL environment that will enable testing and developing new CXL features. In addition, I will highlight some of the limitations of QEMU CXL emulation.
CXL Ecosystem Innovation Leveraging QEMU Based Emulation
As with any emerging technology, developing open-source software for CXL is challenging and emulation of features is a key path forward. In this talk, we will introduce the current major CXL features that QEMU can emulate and walk you through how to set up a Linux + QEMU CXL environment to enable testing and developing new CXL features. Some limitations exist, as with any platform, which we will discuss along with the latest developments in support for dynamic capacity devices (DCD) and switches. A key focus will be how to emulate and interact with these devices using a CXL Management Interface library (libcxlmi).
