Dell PowerEdge M420 Manual - Page 31

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Improving NFS Performance on HPC Clusters with Dell Fluid Cache for DAS

Partitions

Hot Spare Policy violated

Encrypted

Layout

Size

Associated Fluid Cache State

Device Name

Bus Protocol

Media

Read Policy

Write Policy

Cache Policy

Stripe Element Size

Disk Cache Policy

Now create a swap space on the RAID 0.

# mkswap –L SWAP /dev/sdb

Turn on swap.

# swapon –p 10 /dev/sdb

Edit /etc/fstab and add an entry for this swap device.

"LABEL=SWAP swap swap pri=10 0 0"

Make sure the entry is listed before the default swap space the OS install created.

Test that swap can be enabled automatically when the server boots.

# swapoff –a

# swapon -s

# swapon –a

# swapon –s

5. Configure an ib0 IP-address on the InfiniBand interface. This is the IP the I/O clients will use to

mount the NFS share. It should be on the same subnet as the I/O clients.

Reboot the server for all these changes to take effect.

A.4. Virtual disk configuration

Create a virtual disk on the PowerVault MD1200s. This disk will be used as the NFS storage. All the

commands in this section are executed on the PowerEdge R720 NFS server.

1. Note the controller ID of the PERC H810 adapter. From the output below, the controller ID is 1.

[root@nfs-dfc]# omreport storage controller

List of Controllers in the system

<...snip...>

: Available

: Not Applicable

: No

: RAID-0

: 557.75 GB (598879502336

: Not enabled

: /dev/sdb

: SAS

: HDD

: Adaptive Read Ahead

: Write Back

: Not Applicable

: 64 KB

: Disabled

: 1

bytes)