Package: python3-btrfs Version: 11-1 In the upstream issue tracker, an issue was reported about a crash when using the example program 'btrfs-space-calculator' that is shipped together with the python-btrfs library:
https://github.com/knorrie/python-btrfs/issues/19 bor@bor-Latitude-E5450:~/src/python-btrfs$ ./bin/btrfs-space-calculator -m raid0 -d raid5 3T 1T 2T Traceback (most recent call last): [...] File "/home/bor/src/python-btrfs/bin/btrfs/volumes.py", line 192, in chunk_length_to_dev_extent_length dev_extent_length = raw_data_bytes // num_data_stripes ZeroDivisionError: integer division or modulo by zero This is not nice, since Debian Buster will be the first Debian release to include this package, and users should be encouraged to explore possible use cases for the btrfs filesystem. After researching this, I came up with a >120 line change that fixes the involved scenarios and makes it more future-proof. But, to have the program not crash with a minimal fix for this upstream version, it's sufficient to just do a 2-line workaround: diff --git a/bin/btrfs-space-calculator b/bin/btrfs-space-calculator index cb7f8f6..7586c7d 100755 --- a/bin/btrfs-space-calculator +++ b/bin/btrfs-space-calculator @@ -54,8 +54,8 @@ class FakeChunk(object): def __init__(self, flags): self.type = flags self.length = 1 - self.stripes = [FakeStripe()] - self.num_stripes = 1 + self.stripes = [FakeStripe()] * 4 + self.num_stripes = 4 Hans
