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https://github.com/versity/scoutfs.git
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Write test for hole filling noncontig prealloc
Add a test which exercises filling holes in prealloc regions when the _contig_only prealloc option is not set. Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
@@ -24,3 +24,325 @@
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/mnt/test/test/data-prealloc/file-2: 5 extents found
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/mnt/test/test/data-prealloc/file-1: 3 extents found
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/mnt/test/test/data-prealloc/file-2: 3 extents found
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== block writes into region allocs hole
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wrote blk 24
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wrote blk 32
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wrote blk 40
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wrote blk 55
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wrote blk 63
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wrote blk 71
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wrote blk 72
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wrote blk 79
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wrote blk 80
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wrote blk 87
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wrote blk 88
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wrote blk 95
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before:
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24.. 1:
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32.. 1:
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40.. 1:
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55.. 1:
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63.. 1:
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71.. 2:
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79.. 2:
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87.. 2:
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95.. 1: eof
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writing into existing 0 at pos 0
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wrote blk 0
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0.. 1:
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1.. 7: unwritten
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24.. 1:
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32.. 1:
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40.. 1:
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55.. 1:
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63.. 1:
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71.. 2:
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79.. 2:
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87.. 2:
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95.. 1: eof
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writing into existing 0 at pos 1
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wrote blk 15
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0.. 1:
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1.. 14: unwritten
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15.. 1:
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24.. 1:
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32.. 1:
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40.. 1:
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55.. 1:
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63.. 1:
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71.. 2:
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79.. 2:
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87.. 2:
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95.. 1: eof
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writing into existing 0 at pos 2
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wrote blk 19
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0.. 1:
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1.. 14: unwritten
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15.. 1:
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16.. 3: unwritten
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19.. 1:
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20.. 4: unwritten
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24.. 1:
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32.. 1:
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40.. 1:
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55.. 1:
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63.. 1:
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71.. 2:
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79.. 2:
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87.. 2:
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95.. 1: eof
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writing into existing 1 at pos 0
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wrote blk 25
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0.. 1:
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1.. 14: unwritten
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15.. 1:
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16.. 3: unwritten
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19.. 1:
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20.. 4: unwritten
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24.. 1:
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25.. 1:
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26.. 6: unwritten
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32.. 1:
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40.. 1:
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55.. 1:
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63.. 1:
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71.. 2:
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79.. 2:
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87.. 2:
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95.. 1: eof
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writing into existing 1 at pos 1
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wrote blk 39
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0.. 1:
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1.. 14: unwritten
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15.. 1:
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16.. 3: unwritten
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19.. 1:
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20.. 4: unwritten
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24.. 1:
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25.. 1:
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26.. 6: unwritten
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32.. 1:
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33.. 6: unwritten
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39.. 1:
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40.. 1:
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55.. 1:
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63.. 1:
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71.. 2:
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79.. 2:
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87.. 2:
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95.. 1: eof
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writing into existing 1 at pos 2
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wrote blk 44
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0.. 1:
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1.. 14: unwritten
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15.. 1:
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16.. 3: unwritten
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19.. 1:
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20.. 4: unwritten
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24.. 1:
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25.. 1:
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26.. 6: unwritten
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32.. 1:
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33.. 6: unwritten
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39.. 1:
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40.. 1:
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41.. 3: unwritten
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44.. 1:
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45.. 3: unwritten
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55.. 1:
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63.. 1:
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71.. 2:
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79.. 2:
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87.. 2:
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95.. 1: eof
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writing into existing 2 at pos 0
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wrote blk 48
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0.. 1:
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1.. 14: unwritten
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15.. 1:
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16.. 3: unwritten
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19.. 1:
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20.. 4: unwritten
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24.. 1:
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25.. 1:
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26.. 6: unwritten
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32.. 1:
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33.. 6: unwritten
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39.. 1:
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40.. 1:
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41.. 3: unwritten
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44.. 1:
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45.. 3: unwritten
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48.. 1:
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49.. 6: unwritten
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55.. 1:
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63.. 1:
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71.. 2:
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79.. 2:
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87.. 2:
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95.. 1: eof
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writing into existing 2 at pos 1
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wrote blk 62
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0.. 1:
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1.. 14: unwritten
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15.. 1:
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16.. 3: unwritten
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19.. 1:
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20.. 4: unwritten
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24.. 1:
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25.. 1:
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26.. 6: unwritten
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32.. 1:
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33.. 6: unwritten
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39.. 1:
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40.. 1:
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41.. 3: unwritten
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44.. 1:
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45.. 3: unwritten
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48.. 1:
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49.. 6: unwritten
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55.. 1:
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56.. 6: unwritten
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62.. 1:
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63.. 1:
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71.. 2:
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79.. 2:
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87.. 2:
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95.. 1: eof
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writing into existing 2 at pos 2
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wrote blk 67
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0.. 1:
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1.. 14: unwritten
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15.. 1:
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16.. 3: unwritten
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19.. 1:
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20.. 4: unwritten
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24.. 1:
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25.. 1:
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26.. 6: unwritten
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32.. 1:
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33.. 6: unwritten
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39.. 1:
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40.. 1:
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41.. 3: unwritten
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44.. 1:
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45.. 3: unwritten
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48.. 1:
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49.. 6: unwritten
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55.. 1:
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56.. 6: unwritten
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62.. 1:
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63.. 1:
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64.. 3: unwritten
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67.. 1:
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68.. 3: unwritten
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71.. 2:
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79.. 2:
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87.. 2:
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95.. 1: eof
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writing into existing 3 at pos 0
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wrote blk 73
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0.. 1:
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1.. 14: unwritten
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15.. 1:
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16.. 3: unwritten
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19.. 1:
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20.. 4: unwritten
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24.. 1:
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25.. 1:
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26.. 6: unwritten
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32.. 1:
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33.. 6: unwritten
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39.. 1:
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40.. 1:
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41.. 3: unwritten
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44.. 1:
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45.. 3: unwritten
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48.. 1:
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49.. 6: unwritten
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55.. 1:
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56.. 6: unwritten
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62.. 1:
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63.. 1:
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64.. 3: unwritten
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67.. 1:
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68.. 3: unwritten
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71.. 2:
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73.. 1:
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74.. 5: unwritten
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79.. 2:
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87.. 2:
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95.. 1: eof
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writing into existing 3 at pos 1
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wrote blk 86
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0.. 1:
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1.. 14: unwritten
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15.. 1:
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16.. 3: unwritten
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19.. 1:
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20.. 4: unwritten
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24.. 1:
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25.. 1:
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26.. 6: unwritten
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32.. 1:
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33.. 6: unwritten
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39.. 1:
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40.. 1:
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41.. 3: unwritten
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44.. 1:
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45.. 3: unwritten
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48.. 1:
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49.. 6: unwritten
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55.. 1:
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56.. 6: unwritten
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62.. 1:
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63.. 1:
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64.. 3: unwritten
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67.. 1:
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68.. 3: unwritten
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71.. 2:
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73.. 1:
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74.. 5: unwritten
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79.. 2:
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81.. 5: unwritten
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86.. 1:
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87.. 2:
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95.. 1: eof
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writing into existing 3 at pos 2
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wrote blk 92
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0.. 1:
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1.. 14: unwritten
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15.. 1:
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16.. 3: unwritten
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19.. 1:
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20.. 4: unwritten
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24.. 1:
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25.. 1:
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26.. 6: unwritten
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32.. 1:
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33.. 6: unwritten
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39.. 1:
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40.. 1:
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41.. 3: unwritten
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44.. 1:
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45.. 3: unwritten
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48.. 1:
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49.. 6: unwritten
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55.. 1:
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56.. 6: unwritten
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62.. 1:
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63.. 1:
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64.. 3: unwritten
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67.. 1:
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68.. 3: unwritten
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71.. 2:
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73.. 1:
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74.. 5: unwritten
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79.. 2:
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81.. 5: unwritten
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86.. 1:
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87.. 2:
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89.. 3: unwritten
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92.. 1:
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93.. 2: unwritten
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95.. 1: eof
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@@ -6,6 +6,15 @@
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#
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t_require_commands scoutfs stat filefrag dd touch truncate
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write_block()
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{
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local file="$1"
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local blk="$2"
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dd if=/dev/zero of="$file" bs=4096 seek=$blk count=1 conv=notrunc status=none
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echo "wrote blk $blk"
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}
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write_forwards()
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{
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local prefix="$1"
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@@ -70,6 +79,25 @@ print_extents_found()
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filefrag "$prefix"* 2>&1 | grep "extent.*found" | t_filter_fs
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}
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#
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# print the logical start, len, and flags if they're there.
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#
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print_logical_extents()
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{
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local file="$1"
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filefrag -v -b4096 "$file" 2>&1 | t_filter_fs | awk '
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($1 ~ /[0-9]+:/) {
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if ($NF !~ /[0-9]+:/) {
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flags=$NF
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} else {
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flags=""
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}
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print $2, $6, flags
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}
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'
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}
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t_save_all_sysfs_mount_options data_prealloc_blocks
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t_save_all_sysfs_mount_options data_prealloc_contig_only
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restore_options()
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@@ -133,4 +161,70 @@ t_set_sysfs_mount_option 0 data_prealloc_contig_only 0
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write_forwards $prefix 3
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print_extents_found $prefix
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#
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# prepare aligned regions of 8 blocks that we'll write into.
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# We'll right into the first, last, and middle block of each
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# region which was prepared with no existing extents, one at
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# the start, and one at the end.
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#
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# Let's keep this last because it creates a ton of output to read
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# through.
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#
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echo "== block writes into region allocs hole"
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t_set_sysfs_mount_option 0 data_prealloc_blocks 8
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t_set_sysfs_mount_option 0 data_prealloc_contig_only 1
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touch "$prefix"
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truncate -s 0 "$prefix"
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# write initial blocks in regions
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base=0
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for sides in 0 1 2 3; do
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for i in 0 1 2; do
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case "$sides" in
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# none
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0) ;;
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# left
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1) write_block $prefix $((base + 0)) ;;
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# right
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2) write_block $prefix $((base + 7)) ;;
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# both
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3) write_block $prefix $((base + 0))
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write_block $prefix $((base + 7)) ;;
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esac
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((base+=8))
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done
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done
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echo before:
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print_logical_extents "$prefix"
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# now write into the first, middle, and last empty block of each
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t_set_sysfs_mount_option 0 data_prealloc_contig_only 0
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base=0
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for sides in 0 1 2 3; do
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for i in 0 1 2; do
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echo "writing into existing $sides at pos $i"
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case "$sides" in
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# none
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0) left=$base; right=$((base + 7));;
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# left
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1) left=$((base + 1)); right=$((base + 7));;
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# right
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2) left=$((base)); right=$((base + 6));;
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# both
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3) left=$((base + 1)); right=$((base + 6));;
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esac
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case "$i" in
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# start
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0) write_block $prefix $left ;;
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# end
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1) write_block $prefix $right ;;
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# mid (both has 6 blocks internally)
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2) write_block $prefix $((left + 3)) ;;
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esac
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print_logical_extents "$prefix"
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((base+=8))
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done
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done
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t_pass
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Reference in New Issue
Block a user