Portworx Lightboard Sessions: Understanding Volume Replication

In this video, learn how Portworx provides high availability to your data rich application and how it does this by providing synchronous replication at the volume granular level.

RapidFile Toolkit v2.0 for FlashBlade

What is RapidFile Toolkit?

RapidFile Toolkit is a set of supercharged tools for efficiently managing millions of files using familiar Linux command line interfaces. RapidFile Toolkit is designed from the ground up to take advantage of Pure Storage FlashBlade’s massively parallel, scale-out architecture, while also supporting standard Linux file systems. RapidFile Toolkit can serve as a high performance, drop-in replacement for Linux commands in many common scenarios, which can increase employee efficiency, application performance, and business productivity. RapidFile Toolkit is available to all Pure Storage customers.


Benefits of RapidToolkit according to the Site

Increase SysAdmin Productivity

  • Up to 20X faster than Linux Core Utilities
  • Accelerates file management and analytics

Faster Data Movement & Analytics

  • Accelerates Perforce Checkout by up to 20X
  • Rapid file copy to and from scratch space

Faster & Simpler Data Pipelines

  • Indexing files systems up to 20X faster, reducing metadata caching time
  • Support EDA, Genomics, DevOps, HPC, Analytics & Apache Spark and AI/ML


Linux commandsRapidFile Toolkit v2.0Description
lsplsLists files & directories
findpfindFinds matching files
dupduSummarizes file space usage
rmprmRemoves files & directories
chownpchownChanges file ownership
chmodpchmodChanges file permissions
cppcopyCopies files & directories

To Download, you have to be Pure Storage Customers and Partners.

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Configuring NVMeoF RoCE For SUSE 15

The blog is taken from Configuring NVMeoF RoCE For SUSE 15.

The purpose of this blog post is to provide the steps required to implement NVMe-oF using RDMA over Converged Ethernet (RoCE) for SUSE Enterprise Linux (SLES) 15 and subsequent releases.

An important item to note is that RoCE requires a lossless network, requiring global pause flow control or PFC to be configured on the network for smooth operation.

All of the below steps are implemented using Mellanox Connect-X4 adapters.

The blog is taken from Configuring NVMeoF RoCE For SUSE 15.

Session Trunking for NFS available in RHEL-8

This Article is taken from Is NFS session trunking available in RHEL?

Session trunking, whereby one can have multiple TCP connections to the same NFS server with the same IP address is provided by nconnect. This feature is available in RHEL 8

RHSA-2020:4431 for the package(s) kernel-4.18.0-240.el8 or later.
RHBA-2020:4530 for the package(s) nfs-utils-2.3.3-35.el8 libnfsidmap-2.3.3-35.el8 or later.

You can configure on the client side up to 16 connection

[root@nfs-client ~]# mount -t nfs /nfs-share -o nosharecache,nconnect=16

You can see by using the command

[root@nfs-client ~]# cat /proc/self/mountstats
RPC iostats version: 1.1  p/v: 100003/4 (nfs)
    xprt:   tcp 991 0 2 0 39 13 13 0 13 0 2 0 0
    xprt:   tcp 798 0 2 0 39 6 6 0 6 0 2 0 0
    xprt:   tcp 768 0 2 0 39 6 6 0 6 0 2 0 0
    xprt:   tcp 1013 0 2 0 39 4 4 0 4 0 2 0 0
    xprt:   tcp 828 0 2 0 39 4 4 0 4 0 2 0 0
    xprt:   tcp 702 0 2 0 39 2 2 0 2 0 2 0 0
    xprt:   tcp 783 0 2 0 39 2 2 0 2 0 2 0 0
    xprt:   tcp 858 0 2 0 39 2 2 0 2 0 2 0 0

Someone recorded multiple performance increase when used on Pure Storage acting as a NFS Server. at Use nconnect to effortlessly increase NFS performance

Pix Taken from Use nconnect to effortlessly increase NFS performance


  1. Is NFS session trunking available in RHEL?
  2. Use nconnect to effortlessly increase NFS performance
  3. Explanation of NFS mount options: nconnect=, nosharetransport, sharetransport=

Rapidfile Toolskit 1.0

RapidFile Toolkit 1.0 (formerly, PureTools) provides fast client-side alternatives for common Linux commands like ls, du, find, chown, chmod, rm and cp which has been optimized for the high level of concurrency supported by FlashBlade NFS. You will be


# sudo rpm -U rapidfile-1.0.0-beta.5/rapidfile-1.0.0-beta.5-Linux.rpm


Disk Usages:

% pdu -sh /scratch/user1

Copy Files:

% pcp -r -p -u /scratch/user1/ /backup/user1/

Remove Files:

% prm -rv /scratch/user1/

Change Ownership:

% pchown -Rv user1:usergroup /scratch/user1

Change Permission:

% pchmod -Rv 755 /scratch/user1


  1. RapidFile Toolkit for FlashBlade (PureTools)