xfs/599 takes a long time on LBS, but it passes. The amount of time it takes, however, begs the question if the test is could be trimmed to do less work because the larger the block size the larger the number of dirents and xattrs are used to create. The large dirents are not a problem. The amount of time it takes to create xattrs with hashcol however grows exponentially in time. n=16k takes 5 seconds n=32k takes 30 seconds n=64k takes 6-7 minutes n=1048576 takes 30 hours n=1048576 is what we use for block size 32k. Do we really need so many xattrs for larger block sizes for this test? S1="KNR4qb1wJE1ncgC83X2XQg7CKwuqEYQjwuX3MG1o6FyqwrCXagIYlgGqtbLlpUn9prWpkCo9ChrxJOINgc3MBSG0La6Qhm9imcduPeGtC3IvQOzuKPsQAN3O5lVS9zha1giONke1RfnTcidsDlIxNcupydmZrdJmwHU7HRxWWqLTenWh3Gi5YNWExX0Ft94NEtfY8Lov2qvYJbTA5knONimQq5wUaK1Eo449pDXTnCOTRRhPnSHMXzNqT" mkfs.xfs -f -b size=32k -s size=4k /dev/loop16 mount /dev/loop16 /mnt touch /mnt/foo time xfs_db -r -c "hashcoll -a -n 1048576 -p /mnt/foo $S1" /dev/loop16 But also, for the life of me, I can't get the btree printed out, I see the nvlist but not btree, you can print *everything* out with just -c 'print': xfs_db -c 'path /hah' -c 'ablock 0' -c 'addr btree[0].before' -c 'print' /dev/loop16 Luis