mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2025-10-26 18:05:04 +03:00
f1512ee61e
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
90 lines
2.5 KiB
C
90 lines
2.5 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) 2013 by Delphix. All rights reserved.
|
|
* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _ZFEATURE_COMMON_H
|
|
#define _ZFEATURE_COMMON_H
|
|
|
|
#include <sys/fs/zfs.h>
|
|
#include <sys/inttypes.h>
|
|
#include <sys/types.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
struct zfeature_info;
|
|
|
|
typedef enum spa_feature {
|
|
SPA_FEATURE_NONE = -1,
|
|
SPA_FEATURE_ASYNC_DESTROY,
|
|
SPA_FEATURE_EMPTY_BPOBJ,
|
|
SPA_FEATURE_LZ4_COMPRESS,
|
|
SPA_FEATURE_SPACEMAP_HISTOGRAM,
|
|
SPA_FEATURE_ENABLED_TXG,
|
|
SPA_FEATURE_HOLE_BIRTH,
|
|
SPA_FEATURE_EXTENSIBLE_DATASET,
|
|
SPA_FEATURE_EMBEDDED_DATA,
|
|
SPA_FEATURE_BOOKMARKS,
|
|
SPA_FEATURE_FS_SS_LIMIT,
|
|
SPA_FEATURE_LARGE_BLOCKS,
|
|
SPA_FEATURES
|
|
} spa_feature_t;
|
|
|
|
#define SPA_FEATURE_DISABLED (-1ULL)
|
|
|
|
typedef struct zfeature_info {
|
|
spa_feature_t fi_feature;
|
|
const char *fi_uname; /* User-facing feature name */
|
|
const char *fi_guid; /* On-disk feature identifier */
|
|
const char *fi_desc; /* Feature description */
|
|
boolean_t fi_can_readonly; /* Can open pool readonly w/o support? */
|
|
boolean_t fi_mos; /* Is the feature necessary to read the MOS? */
|
|
/* Activate this feature at the same time it is enabled */
|
|
boolean_t fi_activate_on_enable;
|
|
/* array of dependencies, terminated by SPA_FEATURE_NONE */
|
|
const spa_feature_t *fi_depends;
|
|
} zfeature_info_t;
|
|
|
|
typedef int (zfeature_func_t)(zfeature_info_t *, void *);
|
|
|
|
#define ZFS_FEATURE_DEBUG
|
|
|
|
extern zfeature_info_t spa_feature_table[SPA_FEATURES];
|
|
|
|
extern boolean_t zfeature_is_valid_guid(const char *);
|
|
|
|
extern boolean_t zfeature_is_supported(const char *);
|
|
extern int zfeature_lookup_name(const char *, spa_feature_t *);
|
|
extern boolean_t zfeature_depends_on(spa_feature_t, spa_feature_t);
|
|
|
|
extern void zpool_feature_init(void);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _ZFEATURE_COMMON_H */
|