freebsd-dev/module/zcommon/zpool_prop.c
Matthew Ahrens f1512ee61e Illumos 5027 - zfs large block support
5027 zfs large block support
Reviewed by: Alek Pinchuk <pinchuk.alek@gmail.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Josef 'Jeff' Sipek <josef.sipek@nexenta.com>
Reviewed by: Richard Elling <richard.elling@richardelling.com>
Reviewed by: Saso Kiselkov <skiselkov.ml@gmail.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Approved by: Dan McDonald <danmcd@omniti.com>

References:
  https://www.illumos.org/issues/5027
  https://github.com/illumos/illumos-gate/commit/b515258

Porting Notes:

* Included in this patch is a tiny ISP2() cleanup in zio_init() from
Illumos 5255.

* Unlike the upstream Illumos commit this patch does not impose an
arbitrary 128K block size limit on volumes.  Volumes, like filesystems,
are limited by the zfs_max_recordsize=1M module option.

* By default the maximum record size is limited to 1M by the module
option zfs_max_recordsize.  This value may be safely increased up to
16M which is the largest block size supported by the on-disk format.
At the moment, 1M blocks clearly offer a significant performance
improvement but the benefits of going beyond this for the majority
of workloads are less clear.

* The illumos version of this patch increased DMU_MAX_ACCESS to 32M.
This was determined not to be large enough when using 16M blocks
because the zfs_make_xattrdir() function will fail (EFBIG) when
assigning a TX.  This was immediately observed under Linux because
all newly created files must have a security xattr created and
that was failing.  Therefore, we've set DMU_MAX_ACCESS to 64M.

* On 32-bit platforms a hard limit of 1M is set for blocks due
to the limited virtual address space.  We should be able to relax
this one the ABD patches are merged.

Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #354
2015-05-11 12:23:16 -07:00

261 lines
7.8 KiB
C

/*
* 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, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
*/
#include <sys/zio.h>
#include <sys/spa.h>
#include <sys/zfs_acl.h>
#include <sys/zfs_ioctl.h>
#include <sys/fs/zfs.h>
#include "zfs_prop.h"
#if defined(_KERNEL)
#include <sys/systm.h>
#else
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#endif
static zprop_desc_t zpool_prop_table[ZPOOL_NUM_PROPS];
zprop_desc_t *
zpool_prop_get_table(void)
{
return (zpool_prop_table);
}
void
zpool_prop_init(void)
{
static zprop_index_t boolean_table[] = {
{ "off", 0},
{ "on", 1},
{ NULL }
};
static zprop_index_t failuremode_table[] = {
{ "wait", ZIO_FAILURE_MODE_WAIT },
{ "continue", ZIO_FAILURE_MODE_CONTINUE },
{ "panic", ZIO_FAILURE_MODE_PANIC },
{ NULL }
};
/* string properties */
zprop_register_string(ZPOOL_PROP_ALTROOT, "altroot", NULL, PROP_DEFAULT,
ZFS_TYPE_POOL, "<path>", "ALTROOT");
zprop_register_string(ZPOOL_PROP_BOOTFS, "bootfs", NULL, PROP_DEFAULT,
ZFS_TYPE_POOL, "<filesystem>", "BOOTFS");
zprop_register_string(ZPOOL_PROP_CACHEFILE, "cachefile", NULL,
PROP_DEFAULT, ZFS_TYPE_POOL, "<file> | none", "CACHEFILE");
zprop_register_string(ZPOOL_PROP_COMMENT, "comment", NULL,
PROP_DEFAULT, ZFS_TYPE_POOL, "<comment-string>", "COMMENT");
/* readonly number properties */
zprop_register_number(ZPOOL_PROP_SIZE, "size", 0, PROP_READONLY,
ZFS_TYPE_POOL, "<size>", "SIZE");
zprop_register_number(ZPOOL_PROP_FREE, "free", 0, PROP_READONLY,
ZFS_TYPE_POOL, "<size>", "FREE");
zprop_register_number(ZPOOL_PROP_FREEING, "freeing", 0, PROP_READONLY,
ZFS_TYPE_POOL, "<size>", "FREEING");
zprop_register_number(ZPOOL_PROP_LEAKED, "leaked", 0, PROP_READONLY,
ZFS_TYPE_POOL, "<size>", "LEAKED");
zprop_register_number(ZPOOL_PROP_ALLOCATED, "allocated", 0,
PROP_READONLY, ZFS_TYPE_POOL, "<size>", "ALLOC");
zprop_register_number(ZPOOL_PROP_EXPANDSZ, "expandsize", 0,
PROP_READONLY, ZFS_TYPE_POOL, "<size>", "EXPANDSZ");
zprop_register_number(ZPOOL_PROP_FRAGMENTATION, "fragmentation", 0,
PROP_READONLY, ZFS_TYPE_POOL, "<percent>", "FRAG");
zprop_register_number(ZPOOL_PROP_CAPACITY, "capacity", 0, PROP_READONLY,
ZFS_TYPE_POOL, "<size>", "CAP");
zprop_register_number(ZPOOL_PROP_GUID, "guid", 0, PROP_READONLY,
ZFS_TYPE_POOL, "<guid>", "GUID");
zprop_register_number(ZPOOL_PROP_HEALTH, "health", 0, PROP_READONLY,
ZFS_TYPE_POOL, "<state>", "HEALTH");
zprop_register_number(ZPOOL_PROP_DEDUPRATIO, "dedupratio", 0,
PROP_READONLY, ZFS_TYPE_POOL, "<1.00x or higher if deduped>",
"DEDUP");
/* readonly onetime number properties */
zprop_register_number(ZPOOL_PROP_ASHIFT, "ashift", 0, PROP_ONETIME,
ZFS_TYPE_POOL, "<ashift, 9-13, or 0=default>", "ASHIFT");
/* default number properties */
zprop_register_number(ZPOOL_PROP_VERSION, "version", SPA_VERSION,
PROP_DEFAULT, ZFS_TYPE_POOL, "<version>", "VERSION");
zprop_register_number(ZPOOL_PROP_DEDUPDITTO, "dedupditto", 0,
PROP_DEFAULT, ZFS_TYPE_POOL, "<threshold (min 100)>", "DEDUPDITTO");
/* default index (boolean) properties */
zprop_register_index(ZPOOL_PROP_DELEGATION, "delegation", 1,
PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "DELEGATION",
boolean_table);
zprop_register_index(ZPOOL_PROP_AUTOREPLACE, "autoreplace", 0,
PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "REPLACE", boolean_table);
zprop_register_index(ZPOOL_PROP_LISTSNAPS, "listsnapshots", 0,
PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "LISTSNAPS",
boolean_table);
zprop_register_index(ZPOOL_PROP_AUTOEXPAND, "autoexpand", 0,
PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "EXPAND", boolean_table);
zprop_register_index(ZPOOL_PROP_READONLY, "readonly", 0,
PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "RDONLY", boolean_table);
/* default index properties */
zprop_register_index(ZPOOL_PROP_FAILUREMODE, "failmode",
ZIO_FAILURE_MODE_WAIT, PROP_DEFAULT, ZFS_TYPE_POOL,
"wait | continue | panic", "FAILMODE", failuremode_table);
/* hidden properties */
zprop_register_hidden(ZPOOL_PROP_NAME, "name", PROP_TYPE_STRING,
PROP_READONLY, ZFS_TYPE_POOL, "NAME");
zprop_register_hidden(ZPOOL_PROP_MAXBLOCKSIZE, "maxblocksize",
PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_POOL, "MAXBLOCKSIZE");
zprop_register_hidden(ZPOOL_PROP_TNAME, "tname", PROP_TYPE_STRING,
PROP_ONETIME, ZFS_TYPE_POOL, "TNAME");
}
/*
* Given a property name and its type, returns the corresponding property ID.
*/
zpool_prop_t
zpool_name_to_prop(const char *propname)
{
return (zprop_name_to_prop(propname, ZFS_TYPE_POOL));
}
/*
* Given a pool property ID, returns the corresponding name.
* Assuming the pool propety ID is valid.
*/
const char *
zpool_prop_to_name(zpool_prop_t prop)
{
return (zpool_prop_table[prop].pd_name);
}
zprop_type_t
zpool_prop_get_type(zpool_prop_t prop)
{
return (zpool_prop_table[prop].pd_proptype);
}
boolean_t
zpool_prop_readonly(zpool_prop_t prop)
{
return (zpool_prop_table[prop].pd_attr == PROP_READONLY);
}
const char *
zpool_prop_default_string(zpool_prop_t prop)
{
return (zpool_prop_table[prop].pd_strdefault);
}
uint64_t
zpool_prop_default_numeric(zpool_prop_t prop)
{
return (zpool_prop_table[prop].pd_numdefault);
}
/*
* Returns true if this is a valid feature@ property.
*/
boolean_t
zpool_prop_feature(const char *name)
{
static const char *prefix = "feature@";
return (strncmp(name, prefix, strlen(prefix)) == 0);
}
/*
* Returns true if this is a valid unsupported@ property.
*/
boolean_t
zpool_prop_unsupported(const char *name)
{
static const char *prefix = "unsupported@";
return (strncmp(name, prefix, strlen(prefix)) == 0);
}
int
zpool_prop_string_to_index(zpool_prop_t prop, const char *string,
uint64_t *index)
{
return (zprop_string_to_index(prop, string, index, ZFS_TYPE_POOL));
}
int
zpool_prop_index_to_string(zpool_prop_t prop, uint64_t index,
const char **string)
{
return (zprop_index_to_string(prop, index, string, ZFS_TYPE_POOL));
}
uint64_t
zpool_prop_random_value(zpool_prop_t prop, uint64_t seed)
{
return (zprop_random_value(prop, seed, ZFS_TYPE_POOL));
}
#ifndef _KERNEL
const char *
zpool_prop_values(zpool_prop_t prop)
{
return (zpool_prop_table[prop].pd_values);
}
const char *
zpool_prop_column_name(zpool_prop_t prop)
{
return (zpool_prop_table[prop].pd_colname);
}
boolean_t
zpool_prop_align_right(zpool_prop_t prop)
{
return (zpool_prop_table[prop].pd_rightalign);
}
#endif
#if defined(_KERNEL) && defined(HAVE_SPL)
/* zpool property functions */
EXPORT_SYMBOL(zpool_prop_init);
EXPORT_SYMBOL(zpool_prop_get_type);
EXPORT_SYMBOL(zpool_prop_get_table);
/* Pool property functions shared between libzfs and kernel. */
EXPORT_SYMBOL(zpool_name_to_prop);
EXPORT_SYMBOL(zpool_prop_to_name);
EXPORT_SYMBOL(zpool_prop_default_string);
EXPORT_SYMBOL(zpool_prop_default_numeric);
EXPORT_SYMBOL(zpool_prop_readonly);
EXPORT_SYMBOL(zpool_prop_feature);
EXPORT_SYMBOL(zpool_prop_unsupported);
EXPORT_SYMBOL(zpool_prop_index_to_string);
EXPORT_SYMBOL(zpool_prop_string_to_index);
#endif