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5 Using HP SFS Software
This chapter provides information about creating, configuring, and using the file system.
5.1 Creating a Lustre File System
The first required step is to create the Lustre file system configuration. At the low level, this is
achieved through the use of the mkfs.lustre command. However, HP recommends the use
of the lustre_config command as described in section 6.1.2.3 of the Lustre 1.8 Operations
Manual. This command requires that you create a CSV file which contains the configuration
information for your system that defines the file system components on each file system server.
5.1.1 Creating the Lustre Configuration CSV File
See the example CSV file provided in the HP SFS G3.2-0 software
/opt/hp/sfs/scripts/testfs.csv tarball and modify with your system-specific
configuration. The host name as returned by uname -n is used in column1, but the InfiniBand
IPoIB interface name is used in the NID specifications for the MGS node and failover node.
For 10 GigE interconnect systems, an example CSV file named
/opt/hp/sfs/scripts/testfs10GbE.csv is provided. Note the difference in the lnet
network specification and NID specifications.
NOTE: The lustre_config program does not allow hyphens in host names or NID names.
The CSV files that define the Lustre file system configuration and iLO information must be in
UNIX (Linux) mode, not DOS mode. The example files provided as part of the HP SFS G3.2-0
software kit are in UNIX mode. These files might get converted to DOS mode if they are
manipulated, for example with Windows Excel. To convert a file from DOS to UNIX mode, use
a command similar to:
# dos2unix -n oldfile newfile
For the lustre_config program to work, passwordless ssh must be functional between file
system server nodes. This should have been done during Installation Phase 2. See “Configuring
pdsh” (page 35).
The provided CSV file and procedure assumes you have used the HP recommended configuration
with the MGS and MDS nodes as a failover pair, and additional pairs of OSS nodes where each
pair has access to a common set of MSA2000 storage devices.
To determine the multipath storage devices seen by each node that are available for use by Lustre
file system components, use the following command:
# ls /dev/mapper/mpath*
/dev/mapper/mpath4 /dev/mapper/mpath5 /dev/mapper/mpath6
/dev/mapper/mpath7
There should be one mpath device for each MSA2000 storage shelf. A properly configured pair
of nodes should see the same mpath devices. Enforce this by making sure that the
/var/lib/multipath/bindings file is the same for each failover pair of nodes. After the file
is copied from one node to another, the multipath mappings can be removed with the command:
multipath -F
They can be regenerated using the new bindings file with the command:
multipath -v0
Or the node can be rebooted.
These are the devices available to the Lustre configuration CSV file for use by mgs, mdt, and ost.
5.1 Creating a Lustre File System 45
- HP Part Number: SFSUGG32-E 1
- Published: May 2010 1
- Edition: 5 1
- Table of Contents 3
- 4 Table of Contents 4
- Table of Contents 5 5
- List of Figures 7
- List of Tables 9
- About This Document 11
- Related Information 12
- Structure of This Document 13
- Documentation Updates 13
- HP Encourages Your Comments 13
- 1 What's In This Version 15
- 1.3.1 Hardware Configuration 16
- Figure 1-1 Platform Overview 17
- 1.4 Server Security Policy 19
- 1.5 Release Notes 20
- 2.1 Installation 21
- 2.2 Accessing the MSA CLI 21
- 2.3.2 Creating New Volumes 22
- 2.4 MSA2000 Monitoring 24
- 2.4.1 email Notifications 25
- 2.4.2 SNMP Monitoring 26
- 3.1 Supported Firmware 28
- 3.2 Installation Requirements 29
- 3.3 Installation Phase 1 30
- 3.3 Installation Phase 1 31 31
- 3.4 Installation Phase 2 33
- 3.5.3 Configuring pdsh 35
- 3.5.4 Configuring ntp 35
- 3.6 Upgrade Installation 37
- # start lustre config 38
- # end lustre config 38
- 3.6.2 Client Upgrades 39
- 4.1 Installation Requirements 41
- 4.2 Installation Instructions 42
- 5 Using HP SFS Software 45
- 46 Using HP SFS Software 46
- 5.1.1.1 Multiple File Systems 47
- 5.2 Configuring Heartbeat 48
- 5.2.3 Configuration Files 49
- 50 Using HP SFS Software 50
- 5.2.4 Copying Files 51
- 5.2.5 Things to Double-Check 52
- 5.2.6 Things to Note 52
- 5.3 Starting the File System 53
- 5.4 Stopping the File System 53
- 5.5 Monitoring Failover Pairs 54
- 5.7.1.1 On the Server 55
- 56 Using HP SFS Software 56
- 5.7.1.3 On the Client 58
- 6 Licensing 61
- 62 Licensing 62
- 7.1 Server Reboot 63
- 7.2 Errors from install2 63
- 7.3 Application File Locking 63
- 7.4 MDS Is Unresponsive 63
- 7.8 SELinux Support 64
- Correct configuration output 65
- A HP SFS G3 Performance 67
- A.2 Single Client Performance 68
- A.3 Throughput Scaling 70
- A.3 Throughput Scaling 71 71
- A.4 One Shared File 72
- A.6 Random Reads 73
- A.7.1 Benchmark Platform 74
- A.8 10 GigE Performance 76
- A.8.1 Benchmark Platform 77
- 78 HP SFS G3 Performance 78
- A.8.3 Throughput Scaling 79
- 82 Index 82
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