mirror_zfs/include/sys/zfs_sysfs.h
Allan Jude 2a673e76a9
Vdev Properties Feature
Add properties, similar to pool properties, to each vdev.
This makes use of the existing per-vdev ZAP that was added as
part of device evacuation/removal.

A large number of read-only properties are exposed,
many of the members of struct vdev_t, that provide useful
statistics.

Adds support for read-only "removing" vdev property.
Adds the "allocating" property that defaults to "on" and
can be set to "off" to prevent future allocations from that
top-level vdev.

Supports user-defined vdev properties.
Includes support for properties.vdev in SYSFS.

Co-authored-by: Allan Jude <allan@klarasystems.com>
Co-authored-by: Mark Maybee <mark.maybee@delphix.com>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Mark Maybee <mark.maybee@delphix.com>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Closes #11711
2021-11-30 07:46:25 -07:00

52 lines
1.6 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.
*
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*/
/*
* Copyright (c) 2018 by Delphix. All rights reserved.
*/
#ifndef _SYS_ZFS_SYSFS_H
#define _SYS_ZFS_SYSFS_H extern __attribute__((visibility("default")))
#ifdef _KERNEL
void zfs_sysfs_init(void);
void zfs_sysfs_fini(void);
#else
#define zfs_sysfs_init()
#define zfs_sysfs_fini()
_SYS_ZFS_SYSFS_H boolean_t zfs_mod_supported(const char *, const char *);
#endif
#define ZFS_SYSFS_POOL_PROPERTIES "properties.pool"
#define ZFS_SYSFS_VDEV_PROPERTIES "properties.vdev"
#define ZFS_SYSFS_DATASET_PROPERTIES "properties.dataset"
#define ZFS_SYSFS_KERNEL_FEATURES "features.kernel"
#define ZFS_SYSFS_POOL_FEATURES "features.pool"
#define ZFS_SYSFS_DIR "/sys/module/zfs"
/* Alternate location when ZFS is built as part of the kernel (rare) */
#define ZFS_SYSFS_ALT_DIR "/sys/fs/zfs"
#endif /* _SYS_ZFS_SYSFS_H */