proposal: honor uarch flag in bsdtar
vestein463 opened this issue · comments
Bsdtar is able to honor the nodump flag.
Adding a flag --uarch could greatly enhance the usefulness of bsdtar for incremental backups. On ZFS (at least on FreeBSD) the uarch flag is automatically set, if the file content changes. Archiving the files with flag set, and resetting it after success of the "tar c", would make incremental backup really easy.
Just one aftertought. It seems more safe to reset to flag immediately even before reading the file to avoid a race condition.