Calc mode basics

Calc command with most options used

blkar calc FILE_SIZE --sbx-version VERSION --rs-data DATA --rs-parity PARITY --burst BURST

Sample run

$ blkar calc 1234
SBX container general info
========================================
    SBX container version        : 17
    SBX container block size     : 512
    SBX container data  size     : 496

SBX block distribution
========================================
    Metadata    block count      : 3
    Data only   block count      : 10
    Data parity block count      : 2
    Total       block count      : 15

Error correction info
========================================
    RS data   shard count        : 10
    RS parity shard count        : 2
    Burst error resistance level : 12

Error correction parameters interpretation
========================================
    The container can tolerate 2 burst SBX block corruptions in
    each super block set (12 interleaved block sets).

    A block set consists of 12 blocks (6144 bytes).

    A super block set consists of 144 blocks (73728 bytes).

    Each burst error may be up to 12 blocks (6144 bytes) in size.

    In total, 2 sets of 12 consecutive blocks (6144 bytes) may be
    corrupted in each super block set.

    The sets of corrupted blocks may be connected as well, so the
    largest single burst error that can be tolerated in each super
    block set is 24 blocks (12288 bytes) in size.

    Note that the actual tolerance depends on the behaviour of
    the file system.

File and container size
========================================
    File size                    : 1234
    SBX container size           : 69632