zio_impl.h revision e14bb3258d05c1b1077e2db7cf77088924e56919
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.
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fa9e4066f08beec538e775443c5be79dd423fcabahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick * Copyright 2008 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/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * I/O Groups: pipeline stage definitions.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrenstypedef enum zio_stage {
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZIO_STAGE_OPEN = 0, /* RWFCI */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e05725b117836db173257fae43fb0746eb857fb5bonwick ZIO_STAGE_ISSUE_ASYNC, /* -W--- */
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ZIO_STAGE_READ_BP_INIT, /* R---- */
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ZIO_STAGE_WRITE_BP_INIT, /* -W--- */
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZIO_STAGE_CHECKSUM_GENERATE, /* -W--- */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ZIO_STAGE_GANG_ASSEMBLE, /* RWFC- */
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ZIO_STAGE_GANG_ISSUE, /* RWFC- */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZIO_STAGE_DVA_ALLOCATE, /* -W--- */
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZIO_STAGE_DVA_FREE, /* --F-- */
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZIO_STAGE_DVA_CLAIM, /* ---C- */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZIO_STAGE_READY, /* RWFCI */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZIO_STAGE_VDEV_IO_START, /* RW--I */
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZIO_STAGE_VDEV_IO_DONE, /* RW--I */
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZIO_STAGE_VDEV_IO_ASSESS, /* RW--I */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZIO_STAGE_CHECKSUM_VERIFY, /* R---- */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ZIO_STAGE_DONE, /* RWFCI */
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ZIO_STAGES
fa9e4066f08beec538e775443c5be79dd423fcabahrens} zio_stage_t;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e05725b117836db173257fae43fb0746eb857fb5bonwick#define ZIO_INTERLOCK_STAGES \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ((1U << ZIO_STAGE_READY) | \
e05725b117836db173257fae43fb0746eb857fb5bonwick (1U << ZIO_STAGE_DONE))
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick#define ZIO_INTERLOCK_PIPELINE \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ZIO_INTERLOCK_STAGES
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick
e05725b117836db173257fae43fb0746eb857fb5bonwick#define ZIO_VDEV_IO_STAGES \
44cd46cadd9aab751dae6a4023c1cb5bf316d274billm ((1U << ZIO_STAGE_VDEV_IO_START) | \
fa9e4066f08beec538e775443c5be79dd423fcabahrens (1U << ZIO_STAGE_VDEV_IO_DONE) | \
fa9e4066f08beec538e775443c5be79dd423fcabahrens (1U << ZIO_STAGE_VDEV_IO_ASSESS))
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick#define ZIO_VDEV_CHILD_PIPELINE \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (ZIO_VDEV_IO_STAGES | \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (1U << ZIO_STAGE_DONE))
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick#define ZIO_READ_COMMON_STAGES \
e05725b117836db173257fae43fb0746eb857fb5bonwick (ZIO_INTERLOCK_STAGES | \
e05725b117836db173257fae43fb0746eb857fb5bonwick ZIO_VDEV_IO_STAGES | \
e05725b117836db173257fae43fb0746eb857fb5bonwick (1U << ZIO_STAGE_CHECKSUM_VERIFY))
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick#define ZIO_READ_PHYS_PIPELINE \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ZIO_READ_COMMON_STAGES
0a4e9518a44f226be6d39383330b5b1792d2f184gw
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define ZIO_READ_PIPELINE \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (ZIO_READ_COMMON_STAGES | \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (1U << ZIO_STAGE_READ_BP_INIT))
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e05725b117836db173257fae43fb0746eb857fb5bonwick#define ZIO_WRITE_COMMON_STAGES \
e05725b117836db173257fae43fb0746eb857fb5bonwick (ZIO_INTERLOCK_STAGES | \
e05725b117836db173257fae43fb0746eb857fb5bonwick ZIO_VDEV_IO_STAGES | \
e05725b117836db173257fae43fb0746eb857fb5bonwick (1U << ZIO_STAGE_ISSUE_ASYNC) | \
e05725b117836db173257fae43fb0746eb857fb5bonwick (1U << ZIO_STAGE_CHECKSUM_GENERATE))
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e05725b117836db173257fae43fb0746eb857fb5bonwick#define ZIO_WRITE_PHYS_PIPELINE \
e05725b117836db173257fae43fb0746eb857fb5bonwick ZIO_WRITE_COMMON_STAGES
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick#define ZIO_REWRITE_PIPELINE \
e05725b117836db173257fae43fb0746eb857fb5bonwick (ZIO_WRITE_COMMON_STAGES | \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (1U << ZIO_STAGE_WRITE_BP_INIT))
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick#define ZIO_WRITE_PIPELINE \
e05725b117836db173257fae43fb0746eb857fb5bonwick (ZIO_WRITE_COMMON_STAGES | \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (1U << ZIO_STAGE_WRITE_BP_INIT) | \
e05725b117836db173257fae43fb0746eb857fb5bonwick (1U << ZIO_STAGE_DVA_ALLOCATE))
e05725b117836db173257fae43fb0746eb857fb5bonwick
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick#define ZIO_GANG_STAGES \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ((1U << ZIO_STAGE_GANG_ASSEMBLE) | \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (1U << ZIO_STAGE_GANG_ISSUE))
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick#define ZIO_FREE_PIPELINE \
e05725b117836db173257fae43fb0746eb857fb5bonwick (ZIO_INTERLOCK_STAGES | \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (1U << ZIO_STAGE_DVA_FREE))
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick#define ZIO_CLAIM_PIPELINE \
e05725b117836db173257fae43fb0746eb857fb5bonwick (ZIO_INTERLOCK_STAGES | \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (1U << ZIO_STAGE_DVA_CLAIM))
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define ZIO_IOCTL_PIPELINE \
e05725b117836db173257fae43fb0746eb857fb5bonwick (ZIO_INTERLOCK_STAGES | \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (1U << ZIO_STAGE_VDEV_IO_START) | \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (1U << ZIO_STAGE_VDEV_IO_ASSESS))
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick#define ZIO_CONFIG_LOCK_BLOCKING_STAGES \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick ((1U << ZIO_STAGE_VDEV_IO_START) | \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (1U << ZIO_STAGE_DVA_ALLOCATE) | \
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick (1U << ZIO_STAGE_DVA_CLAIM))
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 */