print_ver_ cp
# Require a fiemap-enabled FS.
-# Note we don't check a file here as that could enable
-# the test on ext3 where emulated extent scanning can be slow.
-fiemap_capable_ . \
- || skip_ "this file system lacks FIEMAP support"
+touch fiemap_chk
+fiemap_capable_ fiemap_chk ||
+ skip_ "this file system lacks FIEMAP support"
+
+# Exclude ext3 (or unknown fs types)
+# as the emulated extent scanning is slow
+df -t ext3 . >/dev/null &&
+ skip_ "ext3 has known slow FIEMAP scanning"
# Create a large-but-sparse file.
timeout 10 truncate -s1T f || framework_failure_
+# Disable this test on old BTRFS (e.g. Fedora 14)
+# which reports (unwritten) extents for holes.
+filefrag f || skip_test_ 'the `filefrag` utility is missing'
+filefrag f | grep -F ': 0 extents found' > /dev/null ||
+ skip_test_ 'this file system reports extents for holes'
+
# Nothing can read (much less write) that many bytes in so little time.
timeout 10 cp f f2 || fail=1
. "${srcdir=.}/init.sh"; path_prepend_ ../src
print_ver_ cp
-# Note we don't check a file here as that could enable
-# the test on ext3 where this test is seen to fail.
-if fiemap_capable_ . ; then
- : # Current dir is on a partition with working extents. Good!
+# The test was seen to fail on ext3 so exclude that type
+# (or any file system where the type can't be determined)
+touch fiemap_chk
+if fiemap_capable_ fiemap_chk && ! df -t ext3 . >/dev/null; then
+ : # Current partition has working extents. Good!
else
# It's not; we need to create one, hence we need root access.
require_root_
}
# Return nonzero if the specified path is on a file system for
-# which FIEMAP support exists. Note some file systems (like ext3)
+# which FIEMAP support exists. Note some file systems (like ext3 and btrfs)
# only support FIEMAP for files, not directories.
fiemap_capable_()
{