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Add ashift validation when adding devices to a pool

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Currently, zpool add allows users to add top-level vdevs that have
different ashifts but doing so prevents users from being able to
perform a top-level vdev removal. Often times consumers may not realize
that they have mismatched ashifts until the top-level removal fails.

This feature adds ashift validation to the zpool add command and will
fail the operation if the sector size of the specified vdev does not
match the existing pool. This behavior can be disabled by using the -f
flag. In addition, new flags have been added to provide fine-grained
control to disable specific checks. These flags
are:

--allow-in-use
--allow-ashift-mismatch
--allow-replicaton-mismatch

The force flag will disable all of these checks.

Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Mark Maybee <mmaybee@delphix.com>
Signed-off-by: George Wilson <gwilson@delphix.com>
Closes #15509
This commit is contained in:
George Wilson
2024-03-29 15:15:56 -04:00
committed by GitHub
parent e39e20b6dc
commit b1e46f869e
21 changed files with 219 additions and 58 deletions
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include/libzfs.h
+3 -2
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@@ -21,7 +21,7 @@
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2022 by Delphix. All rights reserved.
* Copyright (c) 2011, 2024 by Delphix. All rights reserved.
* Copyright Joyent, Inc.
* Copyright (c) 2013 Steven Hartland. All rights reserved.
* Copyright (c) 2016, Intel Corporation.
@@ -158,6 +158,7 @@ typedef enum zfs_error {
EZFS_RESUME_EXISTS, /* Resume on existing dataset without force */
EZFS_SHAREFAILED, /* filesystem share failed */
EZFS_RAIDZ_EXPAND_IN_PROGRESS, /* a raidz is currently expanding */
EZFS_ASHIFT_MISMATCH, /* can't add vdevs with different ashifts */
EZFS_UNKNOWN
} zfs_error_t;
@@ -261,7 +262,7 @@ _LIBZFS_H boolean_t zpool_skip_pool(const char *);
_LIBZFS_H int zpool_create(libzfs_handle_t *, const char *, nvlist_t *,
nvlist_t *, nvlist_t *);
_LIBZFS_H int zpool_destroy(zpool_handle_t *, const char *);
_LIBZFS_H int zpool_add(zpool_handle_t *, nvlist_t *);
_LIBZFS_H int zpool_add(zpool_handle_t *, nvlist_t *, boolean_t check_ashift);
typedef struct splitflags {
/* do not split, but return the config that would be split off */