Chapter 6 Managing the File System
Performing a Metadata Dump
StorNext User’s Guide 128
10 Mount the file system as described in Mounting or Unmounting a
File System on page 103.
File System
Configuration
Restrictions 6
When using affinities, the StorNext administrator must adhere to the file
system configuration restrictions listed below to ensure that data
management policies execute properly. These restrictions apply only to
managed file systems, not to non-managed (SNFS-only) installations.
• Taking into account all managed file systems, you cannot use more
than two unique affinity names. However, these two affinity names
can be re-used across file systems.
• All data stripe groups must have exactly one affinity association, but
several stripe groups can be associated to the same affinity. This
restriction does not apply to exclusive metadata or journal stripe
groups.
• At least one policy class must be created to use the configured
affinities.
Performing a Metadata DumpThis procedure replaces any existing metadata dump data for the selected
file system, and should be run only if the metadata file has been lost or
corrupted.
Caution: You must designate at least one data stripe group in each
managed file system as non-exclusive. If you do not make
this designation, writing to the area of the file system that
is not associated with any of the affinities will result in an
out-of-space error.
Deleting affinities from a file system configuration after
the file system has been in use for a while could result in
abnormal behavior. Contact the Quantum Technical
Assistance Center before deleting affinities from a file
system configuration.