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# lfs check mds
testfs-MDT0000-mdc-ffff81012833ec00 active
Use the following command to check OSTs or servers for both MDS and OSTs. This will show
the Lustre view of the file system. You should see an MDT connection, and all expected OSTs
showing a total of the expected space. For example:
# lfs df -h /testfs
UUID bytes Used Available Use% Mounted on
hpcsfsc-MDT0000_UUID 1.1T 475.5M 1013.7G 0% /hpcsfsc[MDT:0]
hpcsfsc-OST0000_UUID 1.2T 68.4G 1.1T 5% /hpcsfsc[OST:0]
hpcsfsc-OST0001_UUID 1.2T 68.1G 1.1T 5% /hpcsfsc[OST:1]
hpcsfsc-OST0002_UUID 1.2T 67.9G 1.1T 5% /hpcsfsc[OST:2]
hpcsfsc-OST0003_UUID 1.2T 69.1G 1.1T 5% /hpcsfsc[OST:3]
hpcsfsc-OST0004_UUID 1.2T 71.2G 1.1T 5% /hpcsfsc[OST:4]
hpcsfsc-OST0005_UUID 1.2T 71.7G 1.1T 5% /hpcsfsc[OST:5]
hpcsfsc-OST0006_UUID 1.2T 68.1G 1.1T 5% /hpcsfsc[OST:6]
hpcsfsc-OST0007_UUID 1.2T 68.4G 1.1T 5% /hpcsfsc[OST:7]
hpcsfsc-OST0008_UUID 1.2T 68.6G 1.1T 5% /hpcsfsc[OST:8]
hpcsfsc-OST0009_UUID 1.2T 73.1G 1.1T 6% /hpcsfsc[OST:9]
hpcsfsc-OST000a_UUID 1.2T 72.9G 1.1T 6% /hpcsfsc[OST:10]
hpcsfsc-OST000b_UUID 1.2T 68.8G 1.1T 5% /hpcsfsc[OST:11]
hpcsfsc-OST000c_UUID 1.2T 68.6G 1.1T 5% /hpcsfsc[OST:12]
hpcsfsc-OST000d_UUID 1.2T 68.3G 1.1T 5% /hpcsfsc[OST:13]
hpcsfsc-OST000e_UUID 1.2T 82.5G 1.0T 6% /hpcsfsc[OST:14]
hpcsfsc-OST000f_UUID 1.2T 71.0G 1.1T 5% /hpcsfsc[OST:15]
filesystem summary: 18.9T 1.1T 16.8T 5% /hpcsfsc
The following commands show the file system component connections and the network interfaces
that serve them.
# ls /proc/fs/lustre/*/*/*conn_uuid
/proc/fs/lustre/mdc/testfs-MDT0000-mdc-ffff81012833ec00/mds_conn_uuid
/proc/fs/lustre/mgc/MGC172.31.97.1@o2ib/mgs_conn_uuid
/proc/fs/lustre/osc/testfs-OST0000-osc-ffff81012833ec00/ost_conn_uuid
# cat /proc/fs/lustre/*/*/*conn_uuid
172.31.97.1@o2ib
172.31.97.1@o2ib
172.31.97.2@o2ib
5.6 Lustre Performance Monitoring
You can monitor the performance of Lustre clients, Object Storage Servers, and the MetaData
Server with the open source tool collectl. Not only can collectl report a variety of the more
common system performance data such as CPU, disk, and network traffic, it also supports
reporting of both Lustre and InfiniBand statistics. Read/write performance counters can be
reported in terms of both bytes-per-second and operations-per-second.
For more information about the collectl utility, see http://collectl.sourceforge.net/
Documentation.html. Choose the Getting Started section for information specific to Lustre.
Additional information about using collectl is also included in the HP XC System Software
Administration Guide Version 3.2.1 in section 7.7 on the HP website at:
http://docs.hp.com/en/A-XCADM-321/A-XCADM-321.pdf
Also see man collectl.
54 Using HP SFS Software
- HP Part Number: SFSUGG31-E 1
- Published: June 2009 1
- Edition: 5 1
- Table of Contents 3
- 4 Table of Contents 4
- Table of Contents 5 5
- List of Figures 6
- List of Tables 7
- About This Document 9
- Related Information 10
- Structure of This Document 11
- Documentation Updates 11
- HP Encourages Your Comments 11
- 1 What's In This Version 13
- 1.3.1 Hardware Configuration 14
- Figure 1-1 Platform Overview 15
- 1.4 Server Security Policy 16
- 1.4 Server Security Policy 17 17
- 2.1 Installation 19
- 2.3.2 Creating New Volumes 20
- 3.1 Supported Firmware 24
- 3.2 Installation Requirements 25
- 3.3 Installation Phase 1 26
- 3.3 Installation Phase 1 27 27
- 3.4 Installation Phase 2 28
- 3.4.3 10 GigE Installation 29
- 3.5.3 Configuring pdsh 31
- 3.5.4 Configuring ntp 31
- 3.6 Upgrade Installation 32
- 3.6.1 Rolling Upgrades 33
- # start lustre config 34
- # end lustre config 34
- 3.6.2 Client Upgrades 35
- 4.1 Installation Requirements 37
- 4.2 Installation Instructions 38
- 5 Using HP SFS Software 41
- 42 Using HP SFS Software 42
- 5.1.1.1 Multiple File Systems 43
- 5.2 Configuring Heartbeat 44
- 5.2.1 Preparing Heartbeat 45
- 5.2.3 Configuration Files 45
- 46 Using HP SFS Software 46
- 5.2.4 Copying Files 47
- 5.2.5 Starting Heartbeat 48
- 5.3 Starting the File System 49
- 5.4 Stopping the File System 50
- 52 Using HP SFS Software 52
- 5.5.1.3 On the Client 53
- 54 Using HP SFS Software 54
- 6 Licensing 55
- 56 Licensing 56
- 7.1 Server Reboot 57
- 7.2 Errors from install2 57
- 7.3 Application File Locking 57
- 7.4 MDS Is Unresponsive 57
- A HP SFS G3 Performance 59
- A.2 Single Client Performance 60
- A.3 Throughput Scaling 62
- A.3 Throughput Scaling 63 63
- A.4 One Shared File 64
- A.6 Random Reads 65
- 66 HP SFS G3 Performance 66
- 68 Index 68
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