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scoutfs/tests/golden/data-prealloc
Zach Brown 55f9435fad Fix partial preallocation when _contig_only = 0 
Data preallocation attempts to allocate large aligned regions of
extents.  It tried to fill the hole around a write offset that
didn't contain an extent.  It missed the case where there can be
multiple extents between the start of the region and the hole.
It could try to overwrite these additional existing extents and writes
could return EINVAL.

We fix this by trimming the preallocation to start at the write offset
if there are any extents in the region before the write offset.  The
data preallocation test output has to be updated now that allocation
extents won't grow towards the start of the region when there are
existing extents.

Signed-off-by: Zach Brown <zab@versity.com>
2023-07-17 09:36:09 -07:00

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== initial writes smaller than prealloc grow to prealloc size
/mnt/test/test/data-prealloc/file-1: 7 extents found
/mnt/test/test/data-prealloc/file-2: 7 extents found
== larger files get full prealloc extents
/mnt/test/test/data-prealloc/file-1: 9 extents found
/mnt/test/test/data-prealloc/file-2: 9 extents found
== non-streaming writes with contig have per-block extents
/mnt/test/test/data-prealloc/file-1: 32 extents found
/mnt/test/test/data-prealloc/file-2: 32 extents found
== any writes to region prealloc get full extents
/mnt/test/test/data-prealloc/file-1: 4 extents found
/mnt/test/test/data-prealloc/file-2: 4 extents found
/mnt/test/test/data-prealloc/file-1: 4 extents found
/mnt/test/test/data-prealloc/file-2: 4 extents found
== streaming offline writes get full extents either way
/mnt/test/test/data-prealloc/file-1: 4 extents found
/mnt/test/test/data-prealloc/file-2: 4 extents found
/mnt/test/test/data-prealloc/file-1: 4 extents found
/mnt/test/test/data-prealloc/file-2: 4 extents found
== goofy preallocation amounts work
/mnt/test/test/data-prealloc/file-1: 5 extents found
/mnt/test/test/data-prealloc/file-2: 5 extents found
/mnt/test/test/data-prealloc/file-1: 5 extents found
/mnt/test/test/data-prealloc/file-2: 5 extents found
/mnt/test/test/data-prealloc/file-1: 3 extents found
/mnt/test/test/data-prealloc/file-2: 3 extents found
== block writes into region allocs hole
wrote blk 24
wrote blk 32
wrote blk 40
wrote blk 55
wrote blk 63
wrote blk 71
wrote blk 72
wrote blk 79
wrote blk 80
wrote blk 87
wrote blk 88
wrote blk 95
before:
24.. 1:
32.. 1:
40.. 1:
55.. 1:
63.. 1:
71.. 2:
79.. 2:
87.. 2:
95.. 1: eof
writing into existing 0 at pos 0
wrote blk 0
0.. 1:
1.. 7: unwritten
24.. 1:
32.. 1:
40.. 1:
55.. 1:
63.. 1:
71.. 2:
79.. 2:
87.. 2:
95.. 1: eof
writing into existing 0 at pos 1
wrote blk 15
0.. 1:
1.. 14: unwritten
15.. 1:
24.. 1:
32.. 1:
40.. 1:
55.. 1:
63.. 1:
71.. 2:
79.. 2:
87.. 2:
95.. 1: eof
writing into existing 0 at pos 2
wrote blk 19
0.. 1:
1.. 14: unwritten
15.. 1:
16.. 3: unwritten
19.. 1:
20.. 4: unwritten
24.. 1:
32.. 1:
40.. 1:
55.. 1:
63.. 1:
71.. 2:
79.. 2:
87.. 2:
95.. 1: eof
writing into existing 1 at pos 0
wrote blk 25
0.. 1:
1.. 14: unwritten
15.. 1:
16.. 3: unwritten
19.. 1:
20.. 4: unwritten
24.. 1:
25.. 1:
26.. 6: unwritten
32.. 1:
40.. 1:
55.. 1:
63.. 1:
71.. 2:
79.. 2:
87.. 2:
95.. 1: eof
writing into existing 1 at pos 1
wrote blk 39
0.. 1:
1.. 14: unwritten
15.. 1:
16.. 3: unwritten
19.. 1:
20.. 4: unwritten
24.. 1:
25.. 1:
26.. 6: unwritten
32.. 1:
39.. 1:
40.. 1:
55.. 1:
63.. 1:
71.. 2:
79.. 2:
87.. 2:
95.. 1: eof
writing into existing 1 at pos 2
wrote blk 44
0.. 1:
1.. 14: unwritten
15.. 1:
16.. 3: unwritten
19.. 1:
20.. 4: unwritten
24.. 1:
25.. 1:
26.. 6: unwritten
32.. 1:
39.. 1:
40.. 1:
44.. 1:
45.. 3: unwritten
55.. 1:
63.. 1:
71.. 2:
79.. 2:
87.. 2:
95.. 1: eof
writing into existing 2 at pos 0
wrote blk 48
0.. 1:
1.. 14: unwritten
15.. 1:
16.. 3: unwritten
19.. 1:
20.. 4: unwritten
24.. 1:
25.. 1:
26.. 6: unwritten
32.. 1:
39.. 1:
40.. 1:
44.. 1:
45.. 3: unwritten
48.. 1:
49.. 6: unwritten
55.. 1:
63.. 1:
71.. 2:
79.. 2:
87.. 2:
95.. 1: eof
writing into existing 2 at pos 1
wrote blk 62
0.. 1:
1.. 14: unwritten
15.. 1:
16.. 3: unwritten
19.. 1:
20.. 4: unwritten
24.. 1:
25.. 1:
26.. 6: unwritten
32.. 1:
39.. 1:
40.. 1:
44.. 1:
45.. 3: unwritten
48.. 1:
49.. 6: unwritten
55.. 1:
56.. 6: unwritten
62.. 1:
63.. 1:
71.. 2:
79.. 2:
87.. 2:
95.. 1: eof
writing into existing 2 at pos 2
wrote blk 67
0.. 1:
1.. 14: unwritten
15.. 1:
16.. 3: unwritten
19.. 1:
20.. 4: unwritten
24.. 1:
25.. 1:
26.. 6: unwritten
32.. 1:
39.. 1:
40.. 1:
44.. 1:
45.. 3: unwritten
48.. 1:
49.. 6: unwritten
55.. 1:
56.. 6: unwritten
62.. 1:
63.. 1:
64.. 3: unwritten
67.. 1:
68.. 3: unwritten
71.. 2:
79.. 2:
87.. 2:
95.. 1: eof
writing into existing 3 at pos 0
wrote blk 73
0.. 1:
1.. 14: unwritten
15.. 1:
16.. 3: unwritten
19.. 1:
20.. 4: unwritten
24.. 1:
25.. 1:
26.. 6: unwritten
32.. 1:
39.. 1:
40.. 1:
44.. 1:
45.. 3: unwritten
48.. 1:
49.. 6: unwritten
55.. 1:
56.. 6: unwritten
62.. 1:
63.. 1:
64.. 3: unwritten
67.. 1:
68.. 3: unwritten
71.. 2:
73.. 1:
74.. 5: unwritten
79.. 2:
87.. 2:
95.. 1: eof
writing into existing 3 at pos 1
wrote blk 86
0.. 1:
1.. 14: unwritten
15.. 1:
16.. 3: unwritten
19.. 1:
20.. 4: unwritten
24.. 1:
25.. 1:
26.. 6: unwritten
32.. 1:
39.. 1:
40.. 1:
44.. 1:
45.. 3: unwritten
48.. 1:
49.. 6: unwritten
55.. 1:
56.. 6: unwritten
62.. 1:
63.. 1:
64.. 3: unwritten
67.. 1:
68.. 3: unwritten
71.. 2:
73.. 1:
74.. 5: unwritten
79.. 2:
86.. 1:
87.. 2:
95.. 1: eof
writing into existing 3 at pos 2
wrote blk 92
0.. 1:
1.. 14: unwritten
15.. 1:
16.. 3: unwritten
19.. 1:
20.. 4: unwritten
24.. 1:
25.. 1:
26.. 6: unwritten
32.. 1:
39.. 1:
40.. 1:
44.. 1:
45.. 3: unwritten
48.. 1:
49.. 6: unwritten
55.. 1:
56.. 6: unwritten
62.. 1:
63.. 1:
64.. 3: unwritten
67.. 1:
68.. 3: unwritten
71.. 2:
73.. 1:
74.. 5: unwritten
79.. 2:
86.. 1:
87.. 2:
92.. 1:
93.. 2: unwritten
95.. 1: eof
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