b2255edcc0
This patch adds a new top-level vdev type called dRAID, which stands for Distributed parity RAID. This pool configuration allows all dRAID vdevs to participate when rebuilding to a distributed hot spare device. This can substantially reduce the total time required to restore full parity to pool with a failed device. A dRAID pool can be created using the new top-level `draid` type. Like `raidz`, the desired redundancy is specified after the type: `draid[1,2,3]`. No additional information is required to create the pool and reasonable default values will be chosen based on the number of child vdevs in the dRAID vdev. zpool create <pool> draid[1,2,3] <vdevs...> Unlike raidz, additional optional dRAID configuration values can be provided as part of the draid type as colon separated values. This allows administrators to fully specify a layout for either performance or capacity reasons. The supported options include: zpool create <pool> \ draid[<parity>][:<data>d][:<children>c][:<spares>s] \ <vdevs...> - draid[parity] - Parity level (default 1) - draid[:<data>d] - Data devices per group (default 8) - draid[:<children>c] - Expected number of child vdevs - draid[:<spares>s] - Distributed hot spares (default 0) Abbreviated example `zpool status` output for a 68 disk dRAID pool with two distributed spares using special allocation classes. ``` pool: tank state: ONLINE config: NAME STATE READ WRITE CKSUM slag7 ONLINE 0 0 0 draid2:8d:68c:2s-0 ONLINE 0 0 0 L0 ONLINE 0 0 0 L1 ONLINE 0 0 0 ... U25 ONLINE 0 0 0 U26 ONLINE 0 0 0 spare-53 ONLINE 0 0 0 U27 ONLINE 0 0 0 draid2-0-0 ONLINE 0 0 0 U28 ONLINE 0 0 0 U29 ONLINE 0 0 0 ... U42 ONLINE 0 0 0 U43 ONLINE 0 0 0 special mirror-1 ONLINE 0 0 0 L5 ONLINE 0 0 0 U5 ONLINE 0 0 0 mirror-2 ONLINE 0 0 0 L6 ONLINE 0 0 0 U6 ONLINE 0 0 0 spares draid2-0-0 INUSE currently in use draid2-0-1 AVAIL ``` When adding test coverage for the new dRAID vdev type the following options were added to the ztest command. These options are leverages by zloop.sh to test a wide range of dRAID configurations. -K draid|raidz|random - kind of RAID to test -D <value> - dRAID data drives per group -S <value> - dRAID distributed hot spares -R <value> - RAID parity (raidz or dRAID) The zpool_create, zpool_import, redundancy, replacement and fault test groups have all been updated provide test coverage for the dRAID feature. Co-authored-by: Isaac Huang <he.huang@intel.com> Co-authored-by: Mark Maybee <mmaybee@cray.com> Co-authored-by: Don Brady <don.brady@delphix.com> Co-authored-by: Matthew Ahrens <mahrens@delphix.com> Co-authored-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Mark Maybee <mmaybee@cray.com> Reviewed-by: Matt Ahrens <matt@delphix.com> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #10102
210 lines
5.8 KiB
Groff
210 lines
5.8 KiB
Groff
.\"
|
|
.\" CDDL HEADER START
|
|
.\"
|
|
.\" The contents of this file are subject to the terms of the
|
|
.\" Common Development and Distribution License (the "License").
|
|
.\" You may not use this file except in compliance with the License.
|
|
.\"
|
|
.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
.\" or http://www.opensolaris.org/os/licensing.
|
|
.\" See the License for the specific language governing permissions
|
|
.\" and limitations under the License.
|
|
.\"
|
|
.\" When distributing Covered Code, include this CDDL HEADER in each
|
|
.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
.\" If applicable, add the following below this CDDL HEADER, with the
|
|
.\" fields enclosed by brackets "[]" replaced with your own identifying
|
|
.\" information: Portions Copyright [yyyy] [name of copyright owner]
|
|
.\"
|
|
.\" CDDL HEADER END
|
|
.\"
|
|
.\"
|
|
.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved.
|
|
.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved.
|
|
.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved.
|
|
.\" Copyright (c) 2017 Datto Inc.
|
|
.\" Copyright (c) 2018 George Melikov. All Rights Reserved.
|
|
.\" Copyright 2017 Nexenta Systems, Inc.
|
|
.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
|
|
.\"
|
|
.Dd August 9, 2019
|
|
.Dt ZPOOL-CREATE 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm zpool-create
|
|
.Nd Creates a new ZFS storage pool
|
|
.Sh SYNOPSIS
|
|
.Nm zpool
|
|
.Cm create
|
|
.Op Fl dfn
|
|
.Op Fl m Ar mountpoint
|
|
.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ...
|
|
.Oo Fl o Ar feature@feature Ns = Ns Ar value Oc
|
|
.Oo Fl O Ar file-system-property Ns = Ns Ar value Oc Ns ...
|
|
.Op Fl R Ar root
|
|
.Ar pool vdev Ns ...
|
|
.Sh DESCRIPTION
|
|
.Bl -tag -width Ds
|
|
.It Xo
|
|
.Nm zpool
|
|
.Cm create
|
|
.Op Fl dfn
|
|
.Op Fl m Ar mountpoint
|
|
.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ...
|
|
.Oo Fl o Ar feature@feature Ns = Ns Ar value Oc Ns ...
|
|
.Oo Fl O Ar file-system-property Ns = Ns Ar value Oc Ns ...
|
|
.Op Fl R Ar root
|
|
.Op Fl t Ar tname
|
|
.Ar pool vdev Ns ...
|
|
.Xc
|
|
Creates a new storage pool containing the virtual devices specified on the
|
|
command line.
|
|
The pool name must begin with a letter, and can only contain
|
|
alphanumeric characters as well as underscore
|
|
.Pq Qq Sy _ ,
|
|
dash
|
|
.Pq Qq Sy \&- ,
|
|
colon
|
|
.Pq Qq Sy \&: ,
|
|
space
|
|
.Pq Qq Sy \&\ ,
|
|
and period
|
|
.Pq Qq Sy \&. .
|
|
The pool names
|
|
.Sy mirror ,
|
|
.Sy raidz ,
|
|
.Sy draid ,
|
|
.Sy spare
|
|
and
|
|
.Sy log
|
|
are reserved, as are names beginning with
|
|
.Sy mirror ,
|
|
.Sy raidz ,
|
|
.Sy draid ,
|
|
.Sy spare ,
|
|
and the pattern
|
|
.Sy c[0-9] .
|
|
The
|
|
.Ar vdev
|
|
specification is described in the
|
|
.Em Virtual Devices
|
|
section of
|
|
.Xr zpoolconcepts.
|
|
.Pp
|
|
The command attempts to verify that each device specified is accessible and not
|
|
currently in use by another subsystem. However this check is not robust enough
|
|
to detect simultaneous attempts to use a new device in different pools, even if
|
|
.Sy multihost
|
|
is
|
|
.Sy enabled.
|
|
The
|
|
administrator must ensure that simultaneous invocations of any combination of
|
|
.Sy zpool replace ,
|
|
.Sy zpool create ,
|
|
.Sy zpool add ,
|
|
or
|
|
.Sy zpool labelclear ,
|
|
do not refer to the same device. Using the same device in two pools will
|
|
result in pool corruption.
|
|
.Pp
|
|
There are some uses, such as being currently mounted, or specified as the
|
|
dedicated dump device, that prevents a device from ever being used by ZFS.
|
|
Other uses, such as having a preexisting UFS file system, can be overridden with
|
|
the
|
|
.Fl f
|
|
option.
|
|
.Pp
|
|
The command also checks that the replication strategy for the pool is
|
|
consistent.
|
|
An attempt to combine redundant and non-redundant storage in a single pool, or
|
|
to mix disks and files, results in an error unless
|
|
.Fl f
|
|
is specified.
|
|
The use of differently sized devices within a single raidz or mirror group is
|
|
also flagged as an error unless
|
|
.Fl f
|
|
is specified.
|
|
.Pp
|
|
Unless the
|
|
.Fl R
|
|
option is specified, the default mount point is
|
|
.Pa / Ns Ar pool .
|
|
The mount point must not exist or must be empty, or else the root dataset
|
|
cannot be mounted.
|
|
This can be overridden with the
|
|
.Fl m
|
|
option.
|
|
.Pp
|
|
By default all supported features are enabled on the new pool unless the
|
|
.Fl d
|
|
option is specified.
|
|
.Bl -tag -width Ds
|
|
.It Fl d
|
|
Do not enable any features on the new pool.
|
|
Individual features can be enabled by setting their corresponding properties to
|
|
.Sy enabled
|
|
with the
|
|
.Fl o
|
|
option.
|
|
See
|
|
.Xr zpool-features 5
|
|
for details about feature properties.
|
|
.It Fl f
|
|
Forces use of
|
|
.Ar vdev Ns s ,
|
|
even if they appear in use or specify a conflicting replication level.
|
|
Not all devices can be overridden in this manner.
|
|
.It Fl m Ar mountpoint
|
|
Sets the mount point for the root dataset.
|
|
The default mount point is
|
|
.Pa /pool
|
|
or
|
|
.Pa altroot/pool
|
|
if
|
|
.Ar altroot
|
|
is specified.
|
|
The mount point must be an absolute path,
|
|
.Sy legacy ,
|
|
or
|
|
.Sy none .
|
|
For more information on dataset mount points, see
|
|
.Xr zfs 8 .
|
|
.It Fl n
|
|
Displays the configuration that would be used without actually creating the
|
|
pool.
|
|
The actual pool creation can still fail due to insufficient privileges or
|
|
device sharing.
|
|
.It Fl o Ar property Ns = Ns Ar value
|
|
Sets the given pool properties.
|
|
See the
|
|
.Xr zpoolprops
|
|
manual page for a list of valid properties that can be set.
|
|
.It Fl o Ar feature@feature Ns = Ns Ar value
|
|
Sets the given pool feature. See the
|
|
.Xr zpool-features 5
|
|
section for a list of valid features that can be set.
|
|
Value can be either disabled or enabled.
|
|
.It Fl O Ar file-system-property Ns = Ns Ar value
|
|
Sets the given file system properties in the root file system of the pool.
|
|
See the
|
|
.Xr zfsprops 8
|
|
manual page for a list of valid properties that can be set.
|
|
.It Fl R Ar root
|
|
Equivalent to
|
|
.Fl o Sy cachefile Ns = Ns Sy none Fl o Sy altroot Ns = Ns Ar root
|
|
.It Fl t Ar tname
|
|
Sets the in-core pool name to
|
|
.Sy tname
|
|
while the on-disk name will be the name specified as the pool name
|
|
.Sy pool .
|
|
This will set the default cachefile property to none. This is intended
|
|
to handle name space collisions when creating pools for other systems,
|
|
such as virtual machines or physical machines whose pools live on network
|
|
block devices.
|
|
.El
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr zpool-destroy 8 ,
|
|
.Xr zpool-export 8 ,
|
|
.Xr zpool-import 8
|