FUSE

1. Obtain the FlexSDS DPFS Package

Request the FlexSDS DPFS installation package from the FlexSDS team.

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2. Install FlexSDS DPFS

On CentOS / Rocky Linux:

bash
rpm -ivh flexsds-7.0.0-1.el8.x86_64.rpm

On Debian / Ubuntu:

bash
dpkg -i flexsds-dpfs-7.0.0_amd64.deb

Expected Output:

text
Selecting previously unselected package flexsds-dpfs.
(Reading database ... 234860 files and directories currently installed.)
Preparing to unpack flexsds-dpfs-7.0.0_amd64.deb ...
Unpacking flexsds-dpfs (7.0.0-1) ...
Setting up flexsds-dpfs (7.0.0-1) ...

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3. Mount the DFS Using FUSE

Foreground Mount

bash
/opt/flexdpfs/bin/flexfuse -p pool1 -d dfs1 /mnt/tmp

Parameters:

• -p or --stor_pool – FlexSDS storage pool name
• -d or --dfs – FlexSDS DFS name
• /mnt/tmp – Mount point

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4. Deploy FUSE as a System Service

View Usage

bash
/opt/flexdpfs/bin/flexfuseadm -h

Usage:

text
/opt/flexdpfs/bin/flexfuseadm [OPTIONS]
-t, --type Service type (install | uninstall)
-n, --name Service name
-p, --stor_pool Storage pool
-d, --dfs DFS name
-c, --core Core option
-m, --mount Mount point
-h, --help Show help

Install FUSE Service

bash
/opt/flexdpfs/bin/flexfuseadm -t install -n dfs1 -p test -d dfs1 -c -1 -m /mnt/tmp

Expected Output:

text
installing flexfuse service
Created symlink /etc/systemd/system/sysinit.target.wants/dfs1.service → /etc/systemd/system/dfs1.service.

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5. Verify Service Status

bash
service dfs1 status

Example Output:

text
dfs1.service - FlexSDS FUSE daemon
Loaded: loaded (/etc/systemd/system/dfs1.service; enabled)
Active: active (running)
Main PID: 35909 (flexfuse)
Memory: 66.5M
CPU: 19.037s

Verify Mount Point

bash
mount

text
flexfuse on /mnt/tmp type fuse.flexfuse (rw,nosuid,nodev,relatime,user_id=0,group_id=0)

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I/O Performance Testing

FIO Test Configuration

[global]
runtime=36000
time_based
group_reporting
direct=1
size=2G
bs=4k
ioengine=libaio
rw=randrw
numjobs=8
iodepth=64
rwmixread=0
[test]
filename=/mnt/tmp/test.bin

Test Results

Using this configuration, the system achieves approximately 100,000 IOPS for 4K random read/write workloads by using only one CPU core, even though user can get more performance via NFS RDMA or Native API.

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Performance Considerations

FUSE has inherent performance limitations due to its user-space design. For AI workloads and other performance-critical applications, FlexSDS recommends:

• NFS over RDMA, or
• FlexSDS Native API

These interfaces bypass FUSE limitations and deliver significantly higher throughput and lower latency.

For additional details, please refer to the FUSE Limitations section of the documentation.

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If you want, I can also:

• Convert this into step-by-step quick-start documentation
• Create a troubleshooting section
• Provide a performance comparison table (FUSE vs NFS vs Native API)