Download IBM Spectrum Scale (formerly GPFS)

MMFS_ABNORMAL_SHUTDOWN
The MMFS_ABNORMAL_SHUTDOWN error log entry means that Spectrum Scale has
determined that it must shut down all Spectrum Scale operations on this node because of a
problem. Insufficient memory on the node to handle critical recovery situations can cause this
error. In general, there are other error log entries from Spectrum Scale or some other
component that is associated with this error log entry.
MMFS_DISKFAIL
The MMFS_DISKFAIL error log entry indicates that Spectrum Scale has detected the failure
of a disk and forced the disk to the stopped state. This is ordinarily not a Spectrum Scale error
but a failure in the disk subsystem or the path to the disk subsystem.
MMFS_ENVIRON
MMFS_ENVIRON error log entry records are associated with other records of the
MMFS_GENERIC or MMFS_SYSTEM_UNMOUNT types. They indicate that the root cause
of the error is external to Spectrum Scale and usually in the network that supports Spectrum
Scale. Check the network and its physical connections. The data portion of this record
supplies the return code that is provided by the communications code.
MMFS_FSSTRUCT
The MMFS_FSSTRUCT error log entry indicates that Spectrum Scale has detected a
problem with the on-disk structure of the file system. The severity of these errors depends on
the exact nature of the inconsistent data structure. If it is limited to a single file, EIO errors are
reported to the application and operation continues. If the inconsistency affects vital metadata
structures, operation ceases on this file system. These errors are often associated with an
MMFS_SYSTEM_UNMOUNT error log entry and will probably occur on all nodes. If the error
occurs on all nodes, some critical piece of the file system is inconsistent. This can occur as a
result of a Spectrum Scale error or an error in the disk system. If the file system is still
mounted, unmount the file system everywhere, then collect data from the mmfsck -n
command before calling IBM service.
MMFS_GENERIC
The MMFS_GENERIC error log entry means that Spectrum Scale self-diagnostics have
detected an internal error or that additional information is being provided with an
MMFS_SYSTEM_UNMOUNT report. If the record is associated with an
MMFS_SYSTEM_UNMOUNT report, the event code fields in the records are the same. The
error code and return code fields might describe the error.
If the error is generated by the self-diagnostic routines, service personnel should interpret the
return and error code fields since the use of these fields varies by the specific error. Errors
caused by the self-checking logic result in the shutdown of Spectrum Scale on this node.
MMFS_GENERIC errors can result from an inability to reach a critical disk resource. These
errors might look different depending on the specific disk resource that has become
unavailable, like logs and allocation maps. This type of error is usually associated with other
error indications. Other errors that are generated by disk subsystems, high availability
components, and communications components at the same time as, or immediately
preceding the Spectrum Scale error, should be pursued first because they might be the cause
of these errors. MMFS_GENERIC error indications without an associated error of those types
represent a Spectrum Scale problem that requires the IBM Support Center.
Chapter 8. Problem determination
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