Dell PowerEdge SDS 100 Improving NFS performance on HPC clusters with Dell Flu - Page 30

PERC H710P Mini, controller=0, List of Virtual Disks on Controller PERC H710P Mini Embedded

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Improving NFS Performance on HPC Clusters with Dell Fluid Cache for DAS 2. Change the OS I/O scheduler to "deadline". To the end of the kernel line in /etc/grub.conf for the .14.1 errata kernel, add elevator=deadline. 3. To work around a known error message with the PCIe SSDs, add the following kernel parameter: to the end of the kernel line in /etc/grub.conf for the .14.1 errata kernel, add pci=nocrs. More details are available at https://bugzilla.kernel.org/show_bug.cgi?id=42606 and https://bugzilla.redhat.com/show_bug.cgi?id=620313. 4. Configure the RAID 0 virtual disk created in Step 1, Section A.2 to be a swap device. First note the controller ID for the PERC H710P Mini (ID 0) and the device name for the RAID 0 virtual disk (/dev/sdb) from output of the command below. [root@nfs-dfc ~]# omreport storage controller List of Controllers in the system Controllers ID Status Name Slot ID State Firmware Version Minimum Required Firmware Version Driver Version : 0 : Ok : PERC H710P Mini : Embedded : Ready : 21.1.0-0007 : Not Applicable : 00.00.06.14-rh1 [root@nfs-dfc ~]# omreport storage vdisk controller=0 List of Virtual Disks on Controller PERC H710P Mini (Embedded) Controller PERC H710P Mini (Embedded) ID : 0 Status : Ok Name : Virtual Disk 0 State : Ready Partitions : Not Available Hot Spare Policy violated : Not Assigned Encrypted : No Layout : RAID-1 Size : 278.88 GB (299439751168 bytes) Associated Fluid Cache State : Not Applicable Device Name : /dev/sda ID Status Name State : 1 : Ok : Virtual Disk 1 : Ready 30

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Improving NFS Performance on HPC Clusters with Dell Fluid Cache for DAS
30
2.
Change the OS I/O scheduler to “deadline”. To the end of the kernel line in
/etc/grub.conf
for
the .14.1 errata kernel, add
elevator=deadline.
3.
To work around a known error message with the PCIe SSDs, add the following kernel parameter: to
the end of the kernel line in
/etc/grub.conf
for the .14.1 errata kernel, add
pci=nocrs.
More details are available at
and
4.
Configure the RAID 0 virtual disk created in Step 1, Section A.2 to be a swap device.
First note the controller ID for the PERC H710P Mini (ID 0) and the device name for the RAID 0
virtual disk (/dev/sdb) from output of the command below.
[root@nfs-dfc ~]# omreport storage controller
List of Controllers in the system
Controllers
ID
: 0
Status
: Ok
Name
: PERC H710P Mini
Slot ID
: Embedded
State
: Ready
Firmware Version
: 21.1.0-0007
Minimum Required Firmware Version
: Not Applicable
Driver Version
: 00.00.06.14-rh1
<…snip…>
[root@nfs-dfc ~]# omreport storage vdisk
controller=0
List of Virtual Disks on Controller PERC H710P Mini (Embedded)
Controller PERC H710P Mini (Embedded)
ID
: 0
Status
: Ok
Name
: Virtual Disk 0
State
: Ready
Partitions
: Not Available
Hot Spare Policy violated
: Not Assigned
Encrypted
: No
Layout
: RAID-1
Size
: 278.88 GB (299439751168 bytes)
Associated Fluid Cache State
: Not Applicable
Device Name
: /dev/sda
<…snip…>
ID
: 1
Status
: Ok
Name
: Virtual Disk 1
State
: Ready