any alternative to "du -s" ? Post: 302143138

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Special Forums Hardware Filesystems, Disks and Memory any alternative to "du -s" ? Post 302143138 by bakunin on Tuesday 30th of October 2007 06:13:00 PM

10-30-2007

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df -k tells you only the utilization of the *whole* filesystem, not the directories which are most responsible for the utilization.

I don't think there is a better way to analyze this than "du -ks * | sort -rn", but probably this runs for several hours on such a large filesystem.

A solution (well, not the most elegant one, but maybe better than nothing) would be to use a "spare" mirror and work on that, quasi-offline.

You create a mirrored filesystem (i don't know about your system, in AIX this is simple) or a third mirror if it is mirrored already. Regularly (say, once a day) you split one mirror off, mount this on some other machine as a FS and do your checks there. After being finished you can resync again with the original and split again the next time....

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filesystem

filesystem(7)						 Miscellaneous Information Manual					     filesystem(7)

NAME

       filesystem - event signalling that filesystems have been mounted

SYNOPSIS

       filesystem [ENV]...

DESCRIPTION

       The  filesystem	event  is  generated by the mountall(8) daemon after it has mounted all filesystems listed in fstab(5).  mountall(8) emits
       this event as an informational signal, services and tasks started or stopped by this event will do so in parallel with other activity.

EXAMPLE

       A service that wishes to be running once filesystems are mounted might use:

	      start on filesystem

SEE ALSO

       mounting(7) mounted(7) virtual-filesystems(7) local-filesystems(7) remote-filesystems(7) all-swaps(7)

mountall							    2009-12-21							     filesystem(7)