2012-12-14 03:24:15 +04:00
|
|
|
/*
|
|
|
|
|
* 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
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/*
|
Illumos #4101, #4102, #4103, #4105, #4106
4101 metaslab_debug should allow for fine-grained control
4102 space_maps should store more information about themselves
4103 space map object blocksize should be increased
4105 removing a mirrored log device results in a leaked object
4106 asynchronously load metaslab
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Sebastien Roy <seb@delphix.com>
Approved by: Garrett D'Amore <garrett@damore.org>
Prior to this patch, space_maps were preferred solely based on the
amount of free space left in each. Unfortunately, this heuristic didn't
contain any information about the make-up of that free space, which
meant we could keep preferring and loading a highly fragmented space map
that wouldn't actually have enough contiguous space to satisfy the
allocation; then unloading that space_map and repeating the process.
This change modifies the space_map's to store additional information
about the contiguous space in the space_map, so that we can use this
information to make a better decision about which space_map to load.
This requires reallocating all space_map objects to increase their
bonus buffer size sizes enough to fit the new metadata.
The above feature can be enabled via a new feature flag introduced by
this change: com.delphix:spacemap_histogram
In addition to the above, this patch allows the space_map block size to
be increase. Currently the block size is set to be 4K in size, which has
certain implications including the following:
* 4K sector devices will not see any compression benefit
* large space_maps require more metadata on-disk
* large space_maps require more time to load (typically random reads)
Now the space_map block size can adjust as needed up to the maximum size
set via the space_map_max_blksz variable.
A bug was fixed which resulted in potentially leaking an object when
removing a mirrored log device. The previous logic for vdev_remove() did
not deal with removing top-level vdevs that are interior vdevs (i.e.
mirror) correctly. The problem would occur when removing a mirrored log
device, and result in the DTL space map object being leaked; because
top-level vdevs don't have DTL space map objects associated with them.
References:
https://www.illumos.org/issues/4101
https://www.illumos.org/issues/4102
https://www.illumos.org/issues/4103
https://www.illumos.org/issues/4105
https://www.illumos.org/issues/4106
https://github.com/illumos/illumos-gate/commit/0713e23
Porting notes:
A handful of kmem_alloc() calls were converted to kmem_zalloc(). Also,
the KM_PUSHPAGE and TQ_PUSHPAGE flags were used as necessary.
Ported-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Prakash Surya <surya1@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2488
2013-10-02 01:25:53 +04:00
|
|
|
* Copyright (c) 2013 by Delphix. All rights reserved.
|
2013-01-23 13:54:30 +04:00
|
|
|
* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
|
2012-12-14 03:24:15 +04:00
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#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;
|
|
|
|
|
|
2013-10-08 21:13:05 +04:00
|
|
|
typedef enum spa_feature {
|
|
|
|
|
SPA_FEATURE_NONE = -1,
|
|
|
|
|
SPA_FEATURE_ASYNC_DESTROY,
|
|
|
|
|
SPA_FEATURE_EMPTY_BPOBJ,
|
|
|
|
|
SPA_FEATURE_LZ4_COMPRESS,
|
|
|
|
|
SPA_FEATURE_SPACEMAP_HISTOGRAM,
|
2013-12-09 22:37:51 +04:00
|
|
|
SPA_FEATURE_ENABLED_TXG,
|
|
|
|
|
SPA_FEATURE_HOLE_BIRTH,
|
2013-10-08 21:13:05 +04:00
|
|
|
SPA_FEATURE_EXTENSIBLE_DATASET,
|
2014-06-06 01:19:08 +04:00
|
|
|
SPA_FEATURE_EMBEDDED_DATA,
|
2013-12-12 02:33:41 +04:00
|
|
|
SPA_FEATURE_BOOKMARKS,
|
2013-10-08 21:13:05 +04:00
|
|
|
SPA_FEATURES
|
|
|
|
|
} spa_feature_t;
|
|
|
|
|
|
2013-12-09 22:37:51 +04:00
|
|
|
#define SPA_FEATURE_DISABLED (-1ULL)
|
|
|
|
|
|
2012-12-14 03:24:15 +04:00
|
|
|
typedef struct zfeature_info {
|
2013-10-08 21:13:05 +04:00
|
|
|
spa_feature_t fi_feature;
|
2012-12-14 03:24:15 +04:00
|
|
|
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? */
|
2013-12-09 22:37:51 +04:00
|
|
|
/* Activate this feature at the same time it is enabled */
|
|
|
|
|
boolean_t fi_activate_on_enable;
|
2013-10-08 21:13:05 +04:00
|
|
|
/* array of dependencies, terminated by SPA_FEATURE_NONE */
|
|
|
|
|
const spa_feature_t *fi_depends;
|
2012-12-14 03:24:15 +04:00
|
|
|
} zfeature_info_t;
|
|
|
|
|
|
2014-06-06 01:19:08 +04:00
|
|
|
typedef int (zfeature_func_t)(zfeature_info_t *, void *);
|
2012-12-14 03:24:15 +04:00
|
|
|
|
|
|
|
|
#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 *);
|
2014-06-06 01:19:08 +04:00
|
|
|
extern int zfeature_lookup_name(const char *, spa_feature_t *);
|
|
|
|
|
extern boolean_t zfeature_depends_on(spa_feature_t, spa_feature_t);
|
2012-12-14 03:24:15 +04:00
|
|
|
|
|
|
|
|
extern void zpool_feature_init(void);
|
|
|
|
|
|
|
|
|
|
#ifdef __cplusplus
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#endif /* _ZFEATURE_COMMON_H */
|