Contents
Tables ............... vii
About this information ........ ix
Prerequisite and related information ...... xi
Conventions used in this information ...... xi
How to send your comments ........ xii
Summary of changes ........ xiii
Chapter 1. Logs, dumps, and traces .. 1
GPFS logs ............... 1
Creating a master GPFS log file ....... 2
Protocol services logs ........... 3
SMB logs .............. 3
NFS logs............... 4
Object logs .............. 6
The IBM Spectrum Scale HDFS transparency log . 8
Protocol authentication log files ....... 9
CES monitoring and troubleshooting ..... 11
CES tracing and debug data collection .... 13
The operating system error log facility ..... 19
MMFS_ABNORMAL_SHUTDOWN ..... 20
MMFS_DISKFAIL ........... 20
MMFS_ENVIRON ........... 20
MMFS_FSSTRUCT ........... 20
MMFS_GENERIC ........... 20
MMFS_LONGDISKIO .......... 21
MMFS_QUOTA ............ 21
MMFS_SYSTEM_UNMOUNT ....... 22
MMFS_SYSTEM_WARNING ....... 22
Error log entry example ......... 22
Using the gpfs.snap command ........ 23
Data gathered by gpfs.snap on all platforms .. 23
Data gathered by gpfs.snap on AIX ..... 24
Data gathered by gpfs.snap on Linux..... 25
Data gathered by gpfs.snap on Windows ... 25
Data gathered by gpfs.snap for a master snapshot 25
Data gathered by gpfs.snap on Linux for
protocols .............. 26
mmdumpperfdata command ........ 31
mmfsadm command ........... 33
Trace facility .............. 34
Generating GPFS trace reports ....... 34
Best practices for setting up core dumps on a client
system ................ 38
Chapter 2. Troubleshooting options
available in GUI ........... 41
Chapter 3. GPFS cluster state
information ............. 43
The mmafmctl Device getstate command .... 43
The mmdiag command .......... 43
The mmgetstate command ......... 43
The mmlscluster command ......... 44
The mmlsconfig command ......... 45
The mmrefresh command ......... 45
The mmsdrrestore command ........ 46
The mmexpelnode command ........ 46
Chapter 4. GPFS file system and disk
information ............. 49
Restricted mode mount .......... 49
Read-only mode mount .......... 49
The lsof command ............ 50
The mmlsmount command ......... 50
The mmapplypolicy -L command ....... 51
mmapplypolicy -L 0 .......... 52
mmapplypolicy -L 1 .......... 52
mmapplypolicy -L 2 .......... 53
mmapplypolicy -L 3 .......... 54
mmapplypolicy -L 4 .......... 55
mmapplypolicy -L 5 .......... 55
mmapplypolicy -L 6 .......... 56
The mmcheckquota command ........ 57
The mmlsnsd command .......... 57
The mmwindisk command ......... 58
The mmfileid command .......... 59
The SHA digest ............. 61
Chapter 5. Resolving deadlocks .... 63
Automated deadlock detection ........ 63
Automated deadlock data collection ...... 65
Automated deadlock breakup ........ 66
Deadlock breakup on demand ........ 67
Cluster overload detection ......... 68
Chapter 6. Other problem
determination tools ......... 71
Chapter 7. Installation and
configuration issues ......... 73
Installation and configuration problems ..... 73
What to do after a node of a GPFS cluster
crashes and has been reinstalled ...... 74
Problems with the /etc/hosts file ...... 74
Linux configuration considerations ..... 74
Protocol authentication problem determination 75
Problems with running commands on other
nodes ............... 75
GPFS cluster configuration data files are locked 76
Recovery from loss of GPFS cluster configuration
data file .............. 77
Automatic backup of the GPFS cluster data... 78
Error numbers specific to GPFS applications calls 78
GPFS modules cannot be loaded on Linux .... 79
GPFS daemon will not come up ....... 79
© Copyright IBM Corp. 2014, 2016 iii
评论0