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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 Tony Hutter
parent b3b37b84e8
commit 6f323353d2
21 changed files with 219 additions and 58 deletions
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lib/libzfs/libzfs_pool.c
+3 -2
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@@ -22,7 +22,7 @@
/*
* Copyright 2015 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2020 by Delphix. All rights reserved.
* Copyright (c) 2011, 2024 by Delphix. All rights reserved.
* Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>
* Copyright (c) 2018 Datto Inc.
* Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
@@ -1724,7 +1724,7 @@ zpool_discard_checkpoint(zpool_handle_t *zhp)
* necessary verification to ensure that the vdev specification is well-formed.
*/
int
zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot)
zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot, boolean_t check_ashift)
{
zfs_cmd_t zc = {"\0"};
int ret;
@@ -1756,6 +1756,7 @@ zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot)
zcmd_write_conf_nvlist(hdl, &zc, nvroot);
(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
zc.zc_flags = check_ashift;
if (zfs_ioctl(hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) {
switch (errno) {