fsck.btrfs is a type of utility that should exist for any filesystem
and is called during system setup when the corresponding /etc/fstab
entries contain non-zero value for fs_passno , see fstab(5) for more.
Traditional filesystems need to run their respective fsck utility in
case the filesystem was not unmounted cleanly and the log needs to be
replayed before mount. This is not needed for BTRFS. You should set
fs_passno to 0.
If you wish to check the consistency of a BTRFS filesystem or repair
a damaged filesystem, see btrfs-check(8). By default the filesystem
consistency is checked, the repair mode is enabled via --repair
option (use with care!).
This page is part of the btrfs-progs (btrfs filesystem tools)
project. Information about the project can be found at
If you have a bug report for this manual page, see
This page was obtained from the project's upstream Git repository
on 2017-03-13. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-to-
date source for the page, or you have corrections or improvements to
the information in this COLOPHON (which is not part of the original
manual page), send a mail to firstname.lastname@example.org
Btrfs v4.6.1 07/16/2016 FSCK.BTRFS(8)