Hi, Could someone with enough knowledge please look into https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207714 and fix it before 10.3? It is rather nasty as it corrupts files with holes when doing 'zfs send/zfs receive'. Such files appear 'automatically' if compression is enabled and a large enough chunk of zeros exists in a file. Pointer to a possible patch is attached in the PR. -- Martin