zio_impl.h revision b24ab6762772a3f6a89393947930c7fa61306783
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER START
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The contents of this file are subject to the terms of the
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * Common Development and Distribution License (the "License").
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * You may not use this file except in compliance with the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
fa9e4066f08beec538e775443c5be79dd423fcabahrens * or http://www.opensolaris.org/os/licensing.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * See the License for the specific language governing permissions
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and limitations under the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * When distributing Covered Code, include this CDDL HEADER in each
fa9e4066f08beec538e775443c5be79dd423fcabahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If applicable, add the following below this CDDL HEADER, with the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * fields enclosed by brackets "[]" replaced with your own identifying
fa9e4066f08beec538e775443c5be79dd423fcabahrens * information: Portions Copyright [yyyy] [name of copyright owner]
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER END
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Use is subject to license terms.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifndef _ZIO_IMPL_H
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define _ZIO_IMPL_H
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zfs_context.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zio.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifdef __cplusplus
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern "C" {
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick * zio pipeline stage definitions
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickenum zio_stage {
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_OPEN = 1 << 0, /* RWFCI */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_READ_BP_INIT = 1 << 1, /* R---- */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_FREE_BP_INIT = 1 << 2, /* --F-- */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_ISSUE_ASYNC = 1 << 3, /* RWF-- */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_WRITE_BP_INIT = 1 << 4, /* -W--- */
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_CHECKSUM_GENERATE = 1 << 5, /* -W--- */
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DDT_READ_START = 1 << 6, /* R---- */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DDT_READ_DONE = 1 << 7, /* R---- */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DDT_WRITE = 1 << 8, /* -W--- */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DDT_FREE = 1 << 9, /* --F-- */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_GANG_ASSEMBLE = 1 << 10, /* RWFC- */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_GANG_ISSUE = 1 << 11, /* RWFC- */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DVA_ALLOCATE = 1 << 12, /* -W--- */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DVA_FREE = 1 << 13, /* --F-- */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DVA_CLAIM = 1 << 14, /* ---C- */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_READY = 1 << 15, /* RWFCI */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_VDEV_IO_START = 1 << 16, /* RW--I */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_VDEV_IO_DONE = 1 << 17, /* RW--I */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_VDEV_IO_ASSESS = 1 << 18, /* RW--I */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_CHECKSUM_VERIFY = 1 << 19, /* R---- */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DONE = 1 << 20 /* RWFCI */
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick};
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_INTERLOCK_STAGES \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_STAGE_READY | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DONE)
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_INTERLOCK_PIPELINE \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ZIO_INTERLOCK_STAGES
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_VDEV_IO_STAGES \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_STAGE_VDEV_IO_START | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_VDEV_IO_DONE | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_VDEV_IO_ASSESS)
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_VDEV_CHILD_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_VDEV_IO_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DONE)
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_READ_COMMON_STAGES \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_INTERLOCK_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_VDEV_IO_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_CHECKSUM_VERIFY)
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_READ_PHYS_PIPELINE \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ZIO_READ_COMMON_STAGES
0a4e9518a44f226be6d39383330b5b1792d2f184gw
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_READ_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_READ_COMMON_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_READ_BP_INIT)
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_DDT_CHILD_READ_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_READ_COMMON_STAGES
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_DDT_READ_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_INTERLOCK_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_READ_BP_INIT | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DDT_READ_START | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DDT_READ_DONE)
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_WRITE_COMMON_STAGES \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_INTERLOCK_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_VDEV_IO_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_ISSUE_ASYNC | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_CHECKSUM_GENERATE)
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_WRITE_PHYS_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_WRITE_COMMON_STAGES
fa9e4066f08beec538e775443c5be79dd423fcabahrens
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_REWRITE_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_WRITE_COMMON_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_WRITE_BP_INIT)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_WRITE_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_WRITE_COMMON_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_WRITE_BP_INIT | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DVA_ALLOCATE)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_DDT_CHILD_WRITE_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_INTERLOCK_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_VDEV_IO_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DVA_ALLOCATE)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_DDT_WRITE_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_INTERLOCK_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_ISSUE_ASYNC | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_WRITE_BP_INIT | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_CHECKSUM_GENERATE | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DDT_WRITE)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_GANG_STAGES \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_STAGE_GANG_ASSEMBLE | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_GANG_ISSUE)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_FREE_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_INTERLOCK_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_FREE_BP_INIT | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DVA_FREE)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_DDT_FREE_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_INTERLOCK_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_FREE_BP_INIT | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_ISSUE_ASYNC | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DDT_FREE)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_CLAIM_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_INTERLOCK_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DVA_CLAIM)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_IOCTL_PIPELINE \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_INTERLOCK_STAGES | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_VDEV_IO_START | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_VDEV_IO_ASSESS)
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick#define ZIO_BLOCKING_STAGES \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick (ZIO_STAGE_DVA_ALLOCATE | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_DVA_CLAIM | \
b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ZIO_STAGE_VDEV_IO_START)
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockextern void zio_inject_init(void);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockextern void zio_inject_fini(void);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifdef __cplusplus
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif /* _ZIO_IMPL_H */