On 05/05/2011 01:16 PM, Josef Bacik wrote:
This is my very rough tester for testing seek_hole/seek_data. Please look over it and make sure we all agree that the semantics are correct. My btrfs patch passes with this and ext3 passes as well. I still have to added fallocate() to it, but for now this seems to cover most of the corner cases. Thanks,
I am assuming that our aim is to be fully compatible with zfs. I tried running the test on it and it failed. One reason was that the default allocation size on zfs is 128K. The test assumes 4K. The other was our understanding of the various corner cases. And lastly, the values for SEEK_DATA and SEEK_HOLE are 3 and 4 respectively. Not vice-versa. So I enhanced the test a bit and have it running on zfs. If someone else can, please do verify my results. BTW, This test also does not touch fallocate. http://oss.oracle.com/~smushran/seek_data/seek_test.c On zfs: # ./seek_test Allocation size: 131072 01. Test basic support SUCC 02. Test an empty file SUCC 03. Test a full file SUCC 04. Test file hole at beg, data at end SUCC 05. Test file data at beg, hole at end SUCC 06. Test file hole data hole data SUCC On ext4: # ./seek_test Allocation size: 4096 01. Test basic support SUCC 02. Test an empty file SUCC ERROR in Test 3.4: POS expected 1, got -1 ERROR in Test 3.6: POS expected 4195, got -1 03. Test a full file FAIL ERROR in Test 4.1: POS expected 0, got 8196 ERROR in Test 4.2: POS expected 1, got 8196 ERROR in Test 4.3: POS expected 8192, got 0 ERROR in Test 4.4: POS expected 8192, got -1 ERROR in Test 4.5: POS expected 8191, got 8196 ERROR in Test 4.6: POS expected 8192, got -1 ERROR in Test 4.8: POS expected 8192, got -1 ERROR in Test 4.10: POS expected 8193, got -1 ERROR in Test 4.12: POS expected 8195, got -1 04. Test file hole at beg, data at end FAIL ERROR in Test 5.1: POS expected 4096, got 16384 ERROR in Test 5.2: POS expected 4096, got 16384 ERROR in Test 5.4: POS expected 1, got -1 ERROR in Test 5.5: POS expected 4096, got 16384 ERROR in Test 5.6: POS expected 4095, got -1 ERROR in Test 5.7: POS expected 4096, got 16384 ERROR in Test 5.9: POS expected 4097, got 16384 ERROR in Test 5.11: POS expected 16383, got 16384 05. Test file data at beg, hole at end FAIL ERROR in Test 6.1: POS expected 0, got 16384 ERROR in Test 6.2: POS expected 1, got 16384 ERROR in Test 6.3: POS expected 4096, got 0 ERROR in Test 6.4: POS expected 4096, got -1 ERROR in Test 6.5: POS expected 4095, got 16384 ERROR in Test 6.6: POS expected 4096, got -1 ERROR in Test 6.7: POS expected 8192, got 16384 ERROR in Test 6.8: POS expected 4096, got -1 ERROR in Test 6.9: POS expected 8192, got 16384 ERROR in Test 6.10: POS expected 4097, got -1 ERROR in Test 6.11: POS expected 8192, got 16384 ERROR in Test 6.12: POS expected 8191, got -1 ERROR in Test 6.13: POS expected 8192, got 16384 ERROR in Test 6.14: POS expected 12288, got -1 ERROR in Test 6.15: POS expected 8193, got 16384 ERROR in Test 6.16: POS expected 12288, got -1 ERROR in Test 6.17: POS expected 12287, got 16384 ERROR in Test 6.18: POS expected 12288, got -1 ERROR in Test 6.20: POS expected 12288, got -1 ERROR in Test 6.22: POS expected 12289, got -1 ERROR in Test 6.24: POS expected 16383, got -1 06. Test file hole data hole data FAIL -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
