fsck.zfs — dummy ZFS filesystem checker

fsck.zfs  is  a  thin  shell wrapper that at most checks the status of a dataset's container pool.  It is
       installed by OpenZFS because some Linux distributions expect a fsck helper for all filesystems.

       If more than one dataset is specified, each is checked in turn and the results binary-ored.

       fsck.zfs — dummy ZFS filesystem checker

       ZFS datasets are checked by running zpoolscrub on the containing pool.  An  individual  ZFS  dataset  is
       never checked independently of its pool, which is unlike a regular filesystem.

       However,  the  fsck(8)  interface  still  allows  it  to  communicate some errors: if the dataset is in a
       degraded pool, then fsck.zfs will return exit code 4 to indicate an uncorrected filesystem error.

       Similarly, if the dataset is in a faulted pool and has a legacy /etc/fstab  record,  then  fsck.zfs  will
       return exit code 8 to indicate a fatal operational error.

       Ignored.

fstab(5), fsck(8), zpool-scrub(8)

OpenZFS                                           May 26, 2021                                       FSCK.ZFS(8)

fsck.zfs [options] dataset…