4 .\" The contents of this file are subject to the terms of the
5 .\" Common Development and Distribution License (the "License").
6 .\" You may not use this file except in compliance with the License.
8 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 .\" or https://opensource.org/licenses/CDDL-1.0.
10 .\" See the License for the specific language governing permissions
11 .\" and limitations under the License.
13 .\" When distributing Covered Code, include this CDDL HEADER in each
14 .\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 .\" If applicable, add the following below this CDDL HEADER, with the
16 .\" fields enclosed by brackets "[]" replaced with your own identifying
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21 .\" Copyright 2013 Darik Horn <dajhorn@vanadac.com>. All rights reserved.
29 .Nd dummy ZFS filesystem checker
37 is a thin shell wrapper that at most checks the status of a dataset's container
39 It is installed by OpenZFS because some Linux
40 distributions expect a fsck helper for all filesystems.
44 is specified, each is checked in turn and the results binary-ored.
50 ZFS datasets are checked by running
52 on the containing pool.
53 An individual ZFS dataset is never checked independently of its pool,
54 which is unlike a regular filesystem.
58 interface still allows it to communicate some errors: if the
60 is in a degraded pool, then
64 to indicate an uncorrected filesystem error.
68 is in a faulted pool and has a legacy
74 to indicate a fatal operational error.