Maximum file size on ext4

[SteavedHams (Steve Atherton)]

@SteavedHams

TLOG_HARD_LIMIT_BYTES does relate to file sizes used by the DiskQueue structure but despite the name I’m not sure if it is actually a hard limit in an unhealthy case where there is a long tail of old versioned data that has not yet been popped by all consumers.

Following up on this, no this is NOT a hard limit on the TLog DiskQueue file size. The disk state of one TLog is always stored in 2 files. If the cluster is unhealthy and the TLog is accumulating old unconsumed data, one of these files will grow past the “hard limit” until the other file is fully consumed.