05-07-2013
Using JFS2, there is no hard limit as far as I know.
There might be some limitations on the number of inodes your filesystem can allocate, although JFS2 can also perform on-demand inode allocation.
From IBM's official documentation:
Quote:
[...] the number of i-nodes available is limited by the size of the file system itself.
Theoretically JFS2 filesystems can support files up to 2 PBs in size. In reality however there's a pseudo-hard limit (the OS will warn you if you try to exceed this limit) set to 32 TB with files no larger than 16 TB.
So, if you were given an infinite amount of disk space under JFS2 it would be possible to have an infinite amount of files as long as the sum of their size did not exceed 2 PBs.
This means you still won't be able to store the whole Internet in your system.
EDIT: And yes, to the eyes of the OS, a directory is still a file.
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LEARN ABOUT DEBIAN
flow-expire
flow-expire(1) General Commands Manual flow-expire(1)
NAME
flow-expire -- Manage storage of flow file archives by expiring old data.
SYNOPSIS
flow-expire [-h] [-d debug_level] [-e expire_count] [-E expire_size] -w workdir
DESCRIPTION
The flow-expire utility will remove the oldest flow files in a directory based on either a count of files or space utilization. The direc-
tory is recursively searched for flow files. Files that do not have a flow-tools signature will be ignored. The internal timestamp is
used so backups or copies of the flow files that do not retain the original timestamp will not impact the operation of flow-expire. flow-
expire is typically used to manage storage in a distributed environment where flows are collected on a different server than they are
archived.
OPTIONS
-d debug_level
Enable debugging.
-e expire_count
Retain the maximum number of files so that the total file count is less than expire_count.
-E expire_size
Retain the maximum number of files so that the total storage is less than expire_size. The letters b,K,M,G can be used as multi-
pliers, ie 16 Megabytes is 16M.
-h Display help.
-w workdir
Work in workdir.
EXAMPLES
Remove the oldest flow files in /flows/krc4 until the total storage is less then 2 Gigabytes.
flow-expire -E2Gig -w /flows/krc4
Remove the oldest flow files in /flows/krc4 until the total number of files is less then 100.
flow-expire -e100 -w /flows/krc4
BUGS
Empty directories are not removed.
AUTHOR
Mark Fullmer maf@splintered.net
SEE ALSO
flow-tools(1)
flow-expire(1)