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      1  1.1  perseant #!/bin/sh
      2  1.1  perseant 
      3  1.1  perseant #
      4  1.2  perseant # Create a bunch of small files at once, then delete half of them.
      5  1.2  perseant # The file size is less than the segment size.
      6  1.2  perseant # This forces live blocks in half-empty segments.
      7  1.1  perseant # If the filesystem is small enough, the cleaner will have to run in
      8  1.1  perseant # order for this to complete.
      9  1.1  perseant #
     10  1.1  perseant # Argument is directory in which to run.
     11  1.1  perseant #
     12  1.2  perseant echo -n "making small files: "
     13  1.2  perseant for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f
     14  1.1  perseant do
     15  1.2  perseant 	echo -n "$i "
     16  1.1  perseant 	for j in 0 1
     17  1.1  perseant 	do
     18  1.2  perseant 		dd if=/dev/zero of=$1/f$i$j bs=65536 count=1 >/dev/null 2>&1
     19  1.1  perseant 	done
     20  1.1  perseant 	sync
     21  1.1  perseant 	rm -f $1/f*1
     22  1.1  perseant done
     23  1.2  perseant echo "done."
     24  1.1  perseant 
     25  1.1  perseant echo "Sleeping for 10 seconds...."
     26  1.1  perseant sleep 10
     27  1.1  perseant 
     28  1.2  perseant echo "Trying with another half meg; expect 'no space on device'"
     29  1.2  perseant dd if=/dev/zero of=$1/f61 bs=512 count=1024 >/dev/null || true
     30  1.2  perseant sync
     31  1.2  perseant df -h $1
     32