FSCK.ZFS(8) System Manager's Manual FSCK.ZFS(8)

# [NAME](#NAME)

`fsck.zfs` — dummy ZFS filesystem checker

# [SYNOPSIS](#SYNOPSIS)

`fsck.zfs` \[`options`] `dataset`…

# [DESCRIPTION](#DESCRIPTION)

`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.

# [OPTIONS](#OPTIONS)

Ignored.

# [NOTES](#NOTES)

ZFS datasets are checked by running `zpool` `scrub` 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)](/man/os/zfs/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**](#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**](#8) to indicate a fatal operational error.

# [SEE ALSO](#SEE_ALSO)

[fstab(5)](/man/os/zfs/fstab.5), [fsck(8)](/man/os/zfs/fsck.8), [zpool-scrub(8)](/man/os/zfs/zpool-scrub.8)

May 26, 2021 OpenZFS

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Document: fsck.zfs(8) from zfs 2.4.4-r3 (Chainguard OS)
Source: https://github.com/openzfs/zfs