+ uname -a
Linux 10.10.10.102 2.6.30.1.xdi #7 SMP Wed Jul 15 16:04:29 CDT 2009 x86_64 x86_64 x86_64 GNU/Linux
+ cd /tmp
+ fuser -mk /dev/sda
+ umount /dev/sda
umount: /dev/sda: not mounted
+ mkfs.xfs -L test -f -i size=2k -l lazy-count=1 -d size=1g -r size=10g,extsize=32m,rtdev=/dev/sdb /dev/sda
meta-data=/dev/sda               isize=2048   agcount=8, agsize=32768 blks
         =                       sectsz=512   attr=0
data     =                       bsize=4096   blocks=262144, imaxpct=25
         =                       sunit=0      swidth=0 blks, unwritten=1
naming   =version 2              bsize=4096
log      =internal log           bsize=4096   blocks=2560, version=1
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =/dev/sdb               extsz=33554432 blocks=2621440, rtextents=320
+ mkdir -p test
+ mount -o noikeep,largeio,noatime,nodiratime,swalloc,nobarrier,rtdev=/dev/sdb /dev/sda test
+ mkdir test/data test/rltm
+ /usr/sbin/xfs_io -c 'chattr +r' -c 'chattr +t' test/rltm
+ for file in '{0..1}'
+ dd if=/dev/zero of=test/rltm/0 bs=1048576 count=100 seek=10
+ for file in '{0..1}'
+ dd if=/dev/zero of=test/rltm/1 bs=1048576 count=100 seek=10
+ wait
tmp/xfs-doit: line 17:   834 Segmentation fault      dd if=/dev/zero of=test/rltm/$file bs=$((1024*1024)) count=100 seek=10
tmp/xfs-doit: line 17:   835 Segmentation fault      dd if=/dev/zero of=test/rltm/$file bs=$((1024*1024)) count=100 seek=10
+ umount test
umount: /tmp/test: device is busy
umount: /tmp/test: device is busy
+ exit