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-rw-r--r--tests/plaintextnames/file_holes_test.go6
1 files changed, 4 insertions, 2 deletions
diff --git a/tests/plaintextnames/file_holes_test.go b/tests/plaintextnames/file_holes_test.go
index 9948715..5de0152 100644
--- a/tests/plaintextnames/file_holes_test.go
+++ b/tests/plaintextnames/file_holes_test.go
@@ -88,8 +88,10 @@ func doTestFileHoleCopy(t *testing.T, name string, writeOffsets []int64) {
if err := syscall.Stat(pPath[i], &st); err != nil {
t.Fatal(err)
}
- // Sometimes the size on disk decreases by 4k due to less fragmentation
- if st.Blocks != st0.Blocks && st.Blocks != st0.Blocks-8 {
+ // Size on disk fluctuates by +-4kB due to different number of extents
+ // (looking at "filefrag -v", it seems like ext4 needs 4kB extra once
+ // you have >=4 extents)
+ if st.Blocks != st0.Blocks && st.Blocks != st0.Blocks-8 && st.Blocks != st0.Blocks+8 {
t.Errorf("size changed: st0.Blocks=%d st%d.Blocks=%d", st0.Blocks, i, st.Blocks)
}
}