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HP OpenVMS Systemsask the wizard |
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The Question is: I was suprised when a log file of a command procedure displayed that files could not be copied to a directory due to it being full. A "show dev d". of course displayed tons of free space. I probably missed something, but is there a limit to the number of files a directory can have? I really did not think that there was. The number of versions, yes, but not quantity. Especially, since disk quotas are not turned on or established. Is there some system parameter I have not looked at yet to determine what the default value is? Thanks in advance. The Answer is : A disk full error means that the disk is full -- this can be a transient state, quite obviously. There are various other errors that can result from a full index file, due to too many files for the size of the index file and/or due to high levels of disk fragmentation. There are also various errors -- errors expanding directories or creating or extending other contiguous files -- that can result from insufficient contiguous free space on the disk. There is no hard limit on the size of a directory nor on the number of files stored within a particular directory -- a directory file is little more than a list of files, the structures related to files are stored in files in the [000000]000000.DIR master file directory (MFD). There are performance implications on large directories, with directories larger than 128 blocks performing significantly better on OpenVMS V7.2 and later -- this due to changes in the directory caching and particularly due to improvements in the directory I/O processing. (The discussion of 128 block directories is NOT a hard limit on any OpenVMS release.) Without specifics of the error message seen, there can be no specific answer to the question. Please contact the Compaq Customer Support Center.
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