MFV r274272 and diff reduction with upstream.
Illumos issue: 5244 zio pipeline callers should explicitly invoke next stage Tested with: ztest plus ZFS over GELI configuration MFC after: 1 month
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ce17e1128b
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0d7beefb91
@ -25,6 +25,7 @@
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/*
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* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
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* Copyright 2012 Garrett D'Amore <garrett@damore.org>. All rights reserved.
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* Copyright (c) 2014 by Delphix. All rights reserved.
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*/
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#include <sys/zfs_context.h>
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@ -33,8 +34,10 @@ int taskq_now;
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taskq_t *system_taskq;
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#define TASKQ_ACTIVE 0x00010000
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#define TASKQ_NAMELEN 31
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struct taskq {
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char tq_name[TASKQ_NAMELEN + 1];
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kmutex_t tq_lock;
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krwlock_t tq_threadlock;
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kcondvar_t tq_dispatch_cv;
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@ -247,6 +250,7 @@ taskq_create(const char *name, int nthreads, pri_t pri,
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cv_init(&tq->tq_dispatch_cv, NULL, CV_DEFAULT, NULL);
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cv_init(&tq->tq_wait_cv, NULL, CV_DEFAULT, NULL);
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cv_init(&tq->tq_maxalloc_cv, NULL, CV_DEFAULT, NULL);
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(void) strncpy(tq->tq_name, name, TASKQ_NAMELEN + 1);
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tq->tq_flags = flags | TASKQ_ACTIVE;
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tq->tq_active = nthreads;
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tq->tq_nthreads = nthreads;
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@ -60,7 +60,7 @@ typedef int vdev_open_func_t(vdev_t *vd, uint64_t *size, uint64_t *max_size,
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uint64_t *logical_ashift, uint64_t *physical_ashift);
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typedef void vdev_close_func_t(vdev_t *vd);
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typedef uint64_t vdev_asize_func_t(vdev_t *vd, uint64_t psize);
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typedef int vdev_io_start_func_t(zio_t *zio);
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typedef void vdev_io_start_func_t(zio_t *zio);
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typedef void vdev_io_done_func_t(zio_t *zio);
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typedef void vdev_state_change_func_t(vdev_t *vd, int, int);
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typedef void vdev_hold_func_t(vdev_t *vd);
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@ -152,9 +152,6 @@ typedef enum zio_priority {
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ZIO_PRIORITY_NOW /* non-queued I/Os (e.g. ioctl) */
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} zio_priority_t;
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#define ZIO_PIPELINE_CONTINUE 0x100
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#define ZIO_PIPELINE_STOP 0x101
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enum zio_flag {
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/*
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* Flags inherited by gang, ddt, and vdev children,
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@ -715,7 +715,7 @@ vdev_disk_ioctl_done(void *zio_arg, int error)
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zio_interrupt(zio);
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}
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static int
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static void
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vdev_disk_io_start(zio_t *zio)
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{
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vdev_t *vd = zio->io_vd;
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@ -732,7 +732,7 @@ vdev_disk_io_start(zio_t *zio)
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if (dvd == NULL || (dvd->vd_ldi_offline && dvd->vd_lh == NULL)) {
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zio->io_error = SET_ERROR(ENXIO);
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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return;
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}
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if (zio->io_type == ZIO_TYPE_IOCTL) {
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@ -740,7 +740,7 @@ vdev_disk_io_start(zio_t *zio)
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if (!vdev_readable(vd)) {
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zio->io_error = SET_ERROR(ENXIO);
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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return;
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}
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switch (zio->io_cmd) {
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@ -771,7 +771,7 @@ vdev_disk_io_start(zio_t *zio)
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* and will call vdev_disk_ioctl_done()
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* upon completion.
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*/
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return (ZIO_PIPELINE_STOP);
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return;
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}
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if (error == ENOTSUP || error == ENOTTY) {
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@ -792,8 +792,8 @@ vdev_disk_io_start(zio_t *zio)
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zio->io_error = SET_ERROR(ENOTSUP);
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}
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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zio_execute(zio);
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return;
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}
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vb = kmem_alloc(sizeof (vdev_buf_t), KM_SLEEP);
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@ -814,8 +814,6 @@ vdev_disk_io_start(zio_t *zio)
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/* ldi_strategy() will return non-zero only on programming errors */
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VERIFY(ldi_strategy(dvd->vd_lh, bp) == 0);
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return (ZIO_PIPELINE_STOP);
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}
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static void
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@ -20,7 +20,7 @@
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*/
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/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2013 by Delphix. All rights reserved.
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* Copyright (c) 2011, 2014 by Delphix. All rights reserved.
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*/
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#include <sys/zfs_context.h>
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@ -154,7 +154,7 @@ vdev_file_close(vdev_t *vd)
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vd->vdev_tsd = NULL;
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}
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static int
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static void
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vdev_file_io_start(zio_t *zio)
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{
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vdev_t *vd = zio->io_vd;
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@ -165,7 +165,7 @@ vdev_file_io_start(zio_t *zio)
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if (!vdev_readable(vd)) {
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zio->io_error = SET_ERROR(ENXIO);
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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return;
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}
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vf = vd->vdev_tsd;
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@ -181,8 +181,8 @@ vdev_file_io_start(zio_t *zio)
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zio->io_error = SET_ERROR(ENOTSUP);
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}
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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zio_execute(zio);
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return;
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}
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zio->io_error = vn_rdwr(zio->io_type == ZIO_TYPE_READ ?
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@ -194,7 +194,10 @@ vdev_file_io_start(zio_t *zio)
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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#ifdef illumos
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VERIFY3U(taskq_dispatch(system_taskq, vdev_file_io_strategy, bp,
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TQ_SLEEP), !=, 0);
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#endif
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}
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/* ARGSUSED */
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@ -788,7 +788,7 @@ vdev_geom_io_intr(struct bio *bp)
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zio_interrupt(zio);
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}
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static int
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static void
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vdev_geom_io_start(zio_t *zio)
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{
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vdev_t *vd;
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@ -803,6 +803,8 @@ vdev_geom_io_start(zio_t *zio)
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/* XXPOLICY */
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if (!vdev_readable(vd)) {
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zio->io_error = SET_ERROR(ENXIO);
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zio_interrupt(zio);
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return;
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} else {
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switch (zio->io_cmd) {
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case DKIOCFLUSHWRITECACHE:
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@ -818,23 +820,23 @@ vdev_geom_io_start(zio_t *zio)
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}
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}
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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zio_execute(zio);
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return;
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case ZIO_TYPE_FREE:
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if (vd->vdev_notrim) {
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zio->io_error = SET_ERROR(ENOTSUP);
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} else if (!vdev_geom_bio_delete_disable) {
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goto sendreq;
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}
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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zio_execute(zio);
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return;
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}
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sendreq:
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cp = vd->vdev_tsd;
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if (cp == NULL) {
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zio->io_error = SET_ERROR(ENXIO);
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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return;
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}
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bp = g_alloc_bio();
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bp->bio_caller1 = zio;
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@ -863,8 +865,6 @@ vdev_geom_io_start(zio_t *zio)
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bp->bio_done = vdev_geom_io_intr;
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g_io_request(bp, cp);
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return (ZIO_PIPELINE_STOP);
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}
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static void
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@ -24,7 +24,7 @@
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*/
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/*
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* Copyright (c) 2013 by Delphix. All rights reserved.
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* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
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*/
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#include <sys/zfs_context.h>
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@ -425,7 +425,7 @@ vdev_mirror_child_select(zio_t *zio)
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return (-1);
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}
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static int
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static void
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vdev_mirror_io_start(zio_t *zio)
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{
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mirror_map_t *mm;
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@ -450,8 +450,8 @@ vdev_mirror_io_start(zio_t *zio)
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zio->io_type, zio->io_priority, 0,
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vdev_mirror_scrub_done, mc));
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}
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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zio_execute(zio);
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return;
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}
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/*
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* For normal reads just pick one child.
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@ -478,8 +478,7 @@ vdev_mirror_io_start(zio_t *zio)
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c++;
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}
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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zio_execute(zio);
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}
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static int
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@ -24,7 +24,7 @@
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*/
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/*
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* Copyright (c) 2013 by Delphix. All rights reserved.
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* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
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*/
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/*
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@ -67,12 +67,11 @@ vdev_missing_close(vdev_t *vd)
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}
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/* ARGSUSED */
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static int
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static void
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vdev_missing_io_start(zio_t *zio)
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{
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zio->io_error = SET_ERROR(ENOTSUP);
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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zio_execute(zio);
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}
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/* ARGSUSED */
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@ -21,7 +21,7 @@
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/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2013 by Delphix. All rights reserved.
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* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
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* Copyright (c) 2013, Joyent, Inc. All rights reserved.
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*/
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@ -1726,7 +1726,7 @@ vdev_raidz_child_done(zio_t *zio)
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* vdevs have had errors, then create zio read operations to the parity
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* columns' VDevs as well.
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*/
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static int
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static void
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vdev_raidz_io_start(zio_t *zio)
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{
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vdev_t *vd = zio->io_vd;
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@ -1756,8 +1756,8 @@ vdev_raidz_io_start(zio_t *zio)
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vdev_raidz_child_done, rc));
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}
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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zio_execute(zio);
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return;
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}
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if (zio->io_type == ZIO_TYPE_WRITE) {
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@ -1789,8 +1789,8 @@ vdev_raidz_io_start(zio_t *zio)
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ZIO_FLAG_NODATA | ZIO_FLAG_OPTIONAL, NULL, NULL));
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}
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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zio_execute(zio);
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return;
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}
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ASSERT(zio->io_type == ZIO_TYPE_READ);
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@ -1830,8 +1830,7 @@ vdev_raidz_io_start(zio_t *zio)
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}
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}
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zio_interrupt(zio);
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return (ZIO_PIPELINE_STOP);
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zio_execute(zio);
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}
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@ -90,6 +90,9 @@ kmem_cache_t *zio_data_buf_cache[SPA_MAXBLOCKSIZE >> SPA_MINBLOCKSHIFT];
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extern vmem_t *zio_alloc_arena;
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#endif
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#define ZIO_PIPELINE_CONTINUE 0x100
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#define ZIO_PIPELINE_STOP 0x101
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/*
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* The following actions directly effect the spa's sync-to-convergence logic.
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* The values below define the sync pass when we start performing the action.
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@ -2557,6 +2560,18 @@ zio_free_zil(spa_t *spa, uint64_t txg, blkptr_t *bp)
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* Read, write and delete to physical devices
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* ==========================================================================
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*/
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/*
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* Issue an I/O to the underlying vdev. Typically the issue pipeline
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* stops after this stage and will resume upon I/O completion.
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* However, there are instances where the vdev layer may need to
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* continue the pipeline when an I/O was not issued. Since the I/O
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* that was sent to the vdev layer might be different than the one
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* currently active in the pipeline (see vdev_queue_io()), we explicitly
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* force the underlying vdev layers to call either zio_execute() or
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* zio_interrupt() to ensure that the pipeline continues with the correct I/O.
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*/
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static int
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zio_vdev_io_start(zio_t *zio)
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{
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@ -2575,7 +2590,8 @@ zio_vdev_io_start(zio_t *zio)
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/*
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* The mirror_ops handle multiple DVAs in a single BP.
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*/
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return (vdev_mirror_ops.vdev_op_io_start(zio));
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vdev_mirror_ops.vdev_op_io_start(zio);
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return (ZIO_PIPELINE_STOP);
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}
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if (vd->vdev_ops->vdev_op_leaf && zio->io_type == ZIO_TYPE_FREE &&
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@ -2589,7 +2605,7 @@ zio_vdev_io_start(zio_t *zio)
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* can quickly react to certain workloads. In particular, we care
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* about non-scrubbing, top-level reads and writes with the following
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* characteristics:
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* - synchronous writes of user data to non-slog devices
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* - synchronous writes of user data to non-slog devices
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* - any reads of user data
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* When these conditions are met, adjust the timestamp of spa_last_io
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* which allows the scan thread to adjust its workload accordingly.
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@ -2693,10 +2709,8 @@ zio_vdev_io_start(zio_t *zio)
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return (ZIO_PIPELINE_STOP);
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}
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ret = vd->vdev_ops->vdev_op_io_start(zio);
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ASSERT(ret == ZIO_PIPELINE_STOP);
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return (ret);
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vd->vdev_ops->vdev_op_io_start(zio);
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return (ZIO_PIPELINE_STOP);
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}
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static int
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