Open System Services Management and Operations Guide (G06.25+, H06.03+)

Managing OSS Files
Open System Services Management and Operations Guide—527191-002
6-29
Controlling the Maximum Number of Files
Controlling the Maximum Number of Files
The fileset catalog determines the number of regular files and directories (the number
of inodes) a fileset can contain. The fileset catalog is kept in the PXINODE file
described in OSS Catalog Files on page 3-7 and Changing the Fileset Catalog on
page 5-20.
When a fileset catalog reaches its configured maximum number of inodes, application
program errors might occur unless additional inode entries are allowed in the catalog.
The fileset catalog can reach its maximum even when space remains for new file
creation on disk volumes in the storage pool.
A catalog’s approximate maximum number of inodes for files is determined by the
fileset MAXINODES attribute. MAXINODE defaults to 500,000 inodes for a new fileset
unless the SCF ADD FILESET Command was used to set it. For a fileset created
under a version of the OSS Monitor prior to G11, the MAXINODES value is determined
by applying a formula to the number of inodes currently in use; the formula usually
allows at least a 10 percent increase in the number of inodes before the maximum is
reached.
The number of inodes in a catalog also affects fileset recovery time. The more inodes
in a fileset, the more time that fileset recovery takes when the SCF DIAGNOSE
Figure 6-6. Redirecting All OSS Standard Files
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OSS Application
Program
OSSTTY
$VHS
$DATA.OSSLOG.
EDITFIL
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/G/ZTTY/#stdin
Standard
output file
/G/ZTTY/#stdout
/G/ZTTY/#stderr
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