diff options
Diffstat (limited to 'sys/cddl/contrib/opensolaris/uts/common')
13 files changed, 277 insertions, 30 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c index bc73c9d..92b7e06 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c @@ -22,6 +22,7 @@ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2012 by Delphix. All rights reserved. + * Copyright (c) 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved. */ /* @@ -141,6 +142,10 @@ uint_t zio_taskq_basedc = 80; /* base duty cycle */ boolean_t spa_create_process = B_TRUE; /* no process ==> no sysdc */ extern int zfs_sync_pass_deferred_free; +#ifndef illumos +extern void spa_deadman(void *arg); +#endif + /* * This (illegal) pool name is used when temporarily importing a spa_t in order * to get the vdev stats associated with the imported devices. @@ -6258,6 +6263,17 @@ spa_sync(spa_t *spa, uint64_t txg) tx = dmu_tx_create_assigned(dp, txg); + spa->spa_sync_starttime = gethrtime(); +#ifdef illumos + VERIFY(cyclic_reprogram(spa->spa_deadman_cycid, + spa->spa_sync_starttime + spa->spa_deadman_synctime)); +#else /* FreeBSD */ +#ifdef _KERNEL + callout_reset(&spa->spa_deadman_cycid, + hz * spa->spa_deadman_synctime / NANOSEC, spa_deadman, spa); +#endif +#endif + /* * If we are upgrading to SPA_VERSION_RAIDZ_DEFLATE this txg, * set spa_deflate if we have no raid-z vdevs. @@ -6386,6 +6402,14 @@ spa_sync(spa_t *spa, uint64_t txg) } dmu_tx_commit(tx); +#ifdef illumos + VERIFY(cyclic_reprogram(spa->spa_deadman_cycid, CY_INFINITY)); +#else /* FreeBSD */ +#ifdef _KERNEL + callout_drain(&spa->spa_deadman_cycid); +#endif +#endif + /* * Clear the dirty config list. */ diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c index 606fd18..dc64682 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c @@ -22,10 +22,12 @@ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2012 by Delphix. All rights reserved. * Copyright 2011 Nexenta Systems, Inc. All rights reserved. + * Copyright 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved. */ #include <sys/zfs_context.h> #include <sys/spa_impl.h> +#include <sys/spa_boot.h> #include <sys/zio.h> #include <sys/zio_checksum.h> #include <sys/zio_compress.h> @@ -253,6 +255,52 @@ TUNABLE_INT("vfs.zfs.recover", &zfs_recover); SYSCTL_INT(_vfs_zfs, OID_AUTO, recover, CTLFLAG_RDTUN, &zfs_recover, 0, "Try to recover from otherwise-fatal errors."); +extern int zfs_txg_synctime_ms; + +/* + * Expiration time in units of zfs_txg_synctime_ms. This value has two + * meanings. First it is used to determine when the spa_deadman logic + * should fire. By default the spa_deadman will fire if spa_sync has + * not completed in 1000 * zfs_txg_synctime_ms (i.e. 1000 seconds). + * Secondly, the value determines if an I/O is considered "hung". + * Any I/O that has not completed in zfs_deadman_synctime is considered + * "hung" resulting in a system panic. + * 1000 zfs_txg_synctime_ms (i.e. 1000 seconds). + */ +uint64_t zfs_deadman_synctime = 1000ULL; +TUNABLE_QUAD("vfs.zfs.deadman_synctime", &zfs_deadman_synctime); +SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, deadman_synctime, CTLFLAG_RDTUN, + &zfs_deadman_synctime, 0, + "Stalled ZFS I/O expiration time in units of vfs.zfs.txg_synctime_ms"); + +/* + * Default value of -1 for zfs_deadman_enabled is resolved in + * zfs_deadman_init() + */ +int zfs_deadman_enabled = -1; +TUNABLE_INT("vfs.zfs.deadman_enabled", &zfs_deadman_enabled); +SYSCTL_INT(_vfs_zfs, OID_AUTO, deadman_enabled, CTLFLAG_RDTUN, + &zfs_deadman_enabled, 0, "Kernel panic on stalled ZFS I/O"); + +#ifndef illumos +#ifdef _KERNEL +static void +zfs_deadman_init() +{ + /* + * If we are not i386 or amd64 or in a virtual machine, + * disable ZFS deadman thread by default + */ + if (zfs_deadman_enabled == -1) { +#if defined(__amd64__) || defined(__i386__) + zfs_deadman_enabled = (vm_guest == VM_GUEST_NO) ? 1 : 0; +#else + zfs_deadman_enabled = 0; +#endif + } +} +#endif /* _KERNEL */ +#endif /* !illumos */ /* * ========================================================================== @@ -422,6 +470,23 @@ spa_lookup(const char *name) } /* + * Fires when spa_sync has not completed within zfs_deadman_synctime_ms. + * If the zfs_deadman_enabled flag is set then it inspects all vdev queues + * looking for potentially hung I/Os. + */ +void +spa_deadman(void *arg) +{ + spa_t *spa = arg; + + zfs_dbgmsg("slow spa_sync: started %llu seconds ago, calls %llu", + (gethrtime() - spa->spa_sync_starttime) / NANOSEC, + ++spa->spa_deadman_calls); + if (zfs_deadman_enabled) + vdev_deadman(spa->spa_root_vdev); +} + +/* * Create an uninitialized spa_t with the given name. Requires * spa_namespace_lock. The caller must ensure that the spa_t doesn't already * exist by calling spa_lookup() first. @@ -431,6 +496,10 @@ spa_add(const char *name, nvlist_t *config, const char *altroot) { spa_t *spa; spa_config_dirent_t *dp; +#ifdef illumos + cyc_handler_t hdlr; + cyc_time_t when; +#endif ASSERT(MUTEX_HELD(&spa_namespace_lock)); @@ -462,6 +531,32 @@ spa_add(const char *name, nvlist_t *config, const char *altroot) spa->spa_proc = &p0; spa->spa_proc_state = SPA_PROC_NONE; +#ifdef illumos + hdlr.cyh_func = spa_deadman; + hdlr.cyh_arg = spa; + hdlr.cyh_level = CY_LOW_LEVEL; +#endif + + spa->spa_deadman_synctime = zfs_deadman_synctime * + zfs_txg_synctime_ms * MICROSEC; + +#ifdef illumos + /* + * This determines how often we need to check for hung I/Os after + * the cyclic has already fired. Since checking for hung I/Os is + * an expensive operation we don't want to check too frequently. + * Instead wait for 5 synctimes before checking again. + */ + when.cyt_interval = 5ULL * zfs_txg_synctime_ms * MICROSEC; + when.cyt_when = CY_INFINITY; + mutex_enter(&cpu_lock); + spa->spa_deadman_cycid = cyclic_add(&hdlr, &when); + mutex_exit(&cpu_lock); +#else /* !illumos */ +#ifdef _KERNEL + callout_init(&spa->spa_deadman_cycid, CALLOUT_MPSAFE); +#endif +#endif refcount_create(&spa->spa_refcount); spa_config_lock_init(spa); @@ -544,6 +639,18 @@ spa_remove(spa_t *spa) nvlist_free(spa->spa_load_info); spa_config_set(spa, NULL); +#ifdef illumos + mutex_enter(&cpu_lock); + if (spa->spa_deadman_cycid != CYCLIC_NONE) + cyclic_remove(spa->spa_deadman_cycid); + mutex_exit(&cpu_lock); + spa->spa_deadman_cycid = CYCLIC_NONE; +#else /* !illumos */ +#ifdef _KERNEL + callout_drain(&spa->spa_deadman_cycid); +#endif +#endif + refcount_destroy(&spa->spa_refcount); spa_config_lock_destroy(spa); @@ -1511,6 +1618,12 @@ spa_prev_software_version(spa_t *spa) } uint64_t +spa_deadman_synctime(spa_t *spa) +{ + return (spa->spa_deadman_synctime); +} + +uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva) { uint64_t asize = DVA_GET_ASIZE(dva); @@ -1605,7 +1718,9 @@ spa_init(int mode) spa_mode_global = mode; #ifdef illumos -#ifndef _KERNEL +#ifdef _KERNEL + spa_arch_init(); +#else if (spa_mode_global != FREAD && dprintf_find_string("watch")) { arc_procfd = open("/proc/self/ctl", O_WRONLY); if (arc_procfd == -1) { @@ -1629,6 +1744,11 @@ spa_init(int mode) zpool_feature_init(); spa_config_load(); l2arc_start(); +#ifndef illumos +#ifdef _KERNEL + zfs_deadman_init(); +#endif +#endif /* !illumos */ } void diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa.h index 1ee766a..de4bf4e 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa.h @@ -599,6 +599,7 @@ extern boolean_t spa_suspended(spa_t *spa); extern uint64_t spa_bootfs(spa_t *spa); extern uint64_t spa_delegation(spa_t *spa); extern objset_t *spa_meta_objset(spa_t *spa); +extern uint64_t spa_deadman_synctime(spa_t *spa); /* Miscellaneous support routines */ extern void spa_activate_mos_feature(spa_t *spa, const char *feature); diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa_boot.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa_boot.h index 1d3622f..8df5072 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa_boot.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa_boot.h @@ -23,6 +23,10 @@ * Use is subject to license terms. */ +/* + * Copyright (c) 2012 by Delphix. All rights reserved. + */ + #ifndef _SYS_SPA_BOOT_H #define _SYS_SPA_BOOT_H @@ -35,6 +39,8 @@ extern "C" { extern char *spa_get_bootprop(char *prop); extern void spa_free_bootprop(char *prop); +extern void spa_arch_init(void); + #ifdef __cplusplus } #endif diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa_impl.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa_impl.h index ea9ae2e..e9526a2 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa_impl.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa_impl.h @@ -22,6 +22,7 @@ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2012 by Delphix. All rights reserved. * Copyright 2011 Nexenta Systems, Inc. All rights reserved. + * Copyright 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved. */ #ifndef _SYS_SPA_IMPL_H @@ -230,6 +231,16 @@ struct spa { uint64_t spa_feat_for_write_obj; /* required to write to pool */ uint64_t spa_feat_for_read_obj; /* required to read from pool */ uint64_t spa_feat_desc_obj; /* Feature descriptions */ +#ifdef illumos + cyclic_id_t spa_deadman_cycid; /* cyclic id */ +#else /* FreeBSD */ +#ifdef _KERNEL + struct callout spa_deadman_cycid; /* callout id */ +#endif +#endif /* illumos */ + uint64_t spa_deadman_calls; /* number of deadman calls */ + uint64_t spa_sync_starttime; /* starting time fo spa_sync */ + uint64_t spa_deadman_synctime; /* deadman expiration timer */ /* * spa_refcnt & spa_config_lock must be the last elements * because refcount_t changes size based on compilation options. diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev.h index a8788a8..d8785ea 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev.h @@ -80,6 +80,7 @@ extern void vdev_metaslab_fini(vdev_t *vd); extern void vdev_metaslab_set_size(vdev_t *); extern void vdev_expand(vdev_t *vd, uint64_t txg); extern void vdev_split(vdev_t *vd); +extern void vdev_deadman(vdev_t *vd); extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev_impl.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev_impl.h index 411ec91..be74c20 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev_impl.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev_impl.h @@ -104,6 +104,8 @@ struct vdev_queue { avl_tree_t vq_read_tree; avl_tree_t vq_write_tree; avl_tree_t vq_pending_tree; + uint64_t vq_io_complete_ts; + uint64_t vq_io_delta_ts; kmutex_t vq_lock; }; diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_context.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_context.h index 0149680..b76349b 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_context.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_context.h @@ -22,6 +22,10 @@ * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ +/* + * Copyright 2011 Nexenta Systems, Inc. All rights reserved. + * Copyright (c) 2012 by Delphix. All rights reserved. + */ #ifndef _SYS_ZFS_CONTEXT_H #define _SYS_ZFS_CONTEXT_H @@ -88,6 +92,11 @@ extern "C" { #include <sys/u8_textprep.h> #include <sys/fm/util.h> #include <sys/sunddi.h> +#ifdef illumos +#include <sys/cyclic.h> +#else /* FreeBSD */ +#include <sys/callout.h> +#endif #include <machine/stdarg.h> diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_ioctl.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_ioctl.h index 9e9ac34..5c333f7 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_ioctl.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_ioctl.h @@ -246,12 +246,24 @@ typedef struct zinject_record { uint32_t zi_iotype; int32_t zi_duration; uint64_t zi_timer; + uint32_t zi_cmd; + uint32_t zi_pad; } zinject_record_t; #define ZINJECT_NULL 0x1 #define ZINJECT_FLUSH_ARC 0x2 #define ZINJECT_UNLOAD_SPA 0x4 +typedef enum zinject_type { + ZINJECT_UNINITIALIZED, + ZINJECT_DATA_FAULT, + ZINJECT_DEVICE_FAULT, + ZINJECT_LABEL_FAULT, + ZINJECT_IGNORED_WRITES, + ZINJECT_PANIC, + ZINJECT_DELAY_IO, +} zinject_type_t; + typedef struct zfs_share { uint64_t z_exportdata; uint64_t z_sharedata; diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h index a58937f..cd50353 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h @@ -443,6 +443,7 @@ struct zio { uint64_t io_offset; uint64_t io_deadline; + uint64_t io_timestamp; avl_node_t io_offset_node; avl_node_t io_deadline_node; avl_tree_t *io_vdev_tree; @@ -596,6 +597,7 @@ extern int zio_handle_fault_injection(zio_t *zio, int error); extern int zio_handle_device_injection(vdev_t *vd, zio_t *zio, int error); extern int zio_handle_label_injection(zio_t *zio, int error); extern void zio_handle_ignored_writes(zio_t *zio); +extern uint64_t zio_handle_io_delay(zio_t *zio); /* * Checksum ereport functions diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c index 2d92975..17cb6c1 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c @@ -3173,3 +3173,41 @@ vdev_split(vdev_t *vd) } vdev_propagate_state(cvd); } + +void +vdev_deadman(vdev_t *vd) +{ + for (int c = 0; c < vd->vdev_children; c++) { + vdev_t *cvd = vd->vdev_child[c]; + + vdev_deadman(cvd); + } + + if (vd->vdev_ops->vdev_op_leaf) { + vdev_queue_t *vq = &vd->vdev_queue; + + mutex_enter(&vq->vq_lock); + if (avl_numnodes(&vq->vq_pending_tree) > 0) { + spa_t *spa = vd->vdev_spa; + zio_t *fio; + uint64_t delta; + + /* + * Look at the head of all the pending queues, + * if any I/O has been outstanding for longer than + * the spa_deadman_synctime we panic the system. + */ + fio = avl_first(&vq->vq_pending_tree); + delta = ddi_get_lbolt64() - fio->io_timestamp; + if (delta > NSEC_TO_TICK(spa_deadman_synctime(spa))) { + zfs_dbgmsg("SLOW IO: zio timestamp %llu, " + "delta %llu, last io %llu", + fio->io_timestamp, delta, + vq->vq_io_complete_ts); + fm_panic("I/O to pool '%s' appears to be " + "hung.", spa_name(spa)); + } + } + mutex_exit(&vq->vq_lock); + } +} diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c index b44f3b2..8bde2eb 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c @@ -23,6 +23,10 @@ * Use is subject to license terms. */ +/* + * Copyright (c) 2012 by Delphix. All rights reserved. + */ + #include <sys/zfs_context.h> #include <sys/vdev_impl.h> #include <sys/zio.h> @@ -315,6 +319,7 @@ again: zio_buf_alloc(size), size, fio->io_type, ZIO_PRIORITY_AGG, flags | ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE, vdev_queue_agg_io_done, NULL); + aio->io_timestamp = fio->io_timestamp; nio = fio; do { @@ -386,7 +391,8 @@ vdev_queue_io(zio_t *zio) mutex_enter(&vq->vq_lock); - zio->io_deadline = (ddi_get_lbolt64() >> zfs_vdev_time_shift) + + zio->io_timestamp = ddi_get_lbolt64(); + zio->io_deadline = (zio->io_timestamp >> zfs_vdev_time_shift) + zio->io_priority; vdev_queue_io_add(vq, zio); @@ -411,10 +417,16 @@ vdev_queue_io_done(zio_t *zio) { vdev_queue_t *vq = &zio->io_vd->vdev_queue; + if (zio_injection_enabled) + delay(SEC_TO_TICK(zio_handle_io_delay(zio))); + mutex_enter(&vq->vq_lock); avl_remove(&vq->vq_pending_tree, zio); + vq->vq_io_complete_ts = ddi_get_lbolt64(); + vq->vq_io_delta_ts = vq->vq_io_complete_ts - zio->io_timestamp; + for (int i = 0; i < zfs_vdev_ramp_rate; i++) { zio_t *nio = vdev_queue_io_to_issue(vq, zfs_vdev_max_pending); if (nio == NULL) diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio_inject.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio_inject.c index 9ae7d1f..a9d4ab4 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio_inject.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio_inject.c @@ -20,6 +20,7 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2012 by Delphix. All rights reserved. */ /* @@ -147,14 +148,8 @@ zio_handle_fault_injection(zio_t *zio, int error) for (handler = list_head(&inject_handlers); handler != NULL; handler = list_next(&inject_handlers, handler)) { - /* Ignore errors not destined for this pool */ - if (zio->io_spa != handler->zi_spa) - continue; - - /* Ignore device errors and panic injection */ - if (handler->zi_record.zi_guid != 0 || - handler->zi_record.zi_func[0] != '\0' || - handler->zi_record.zi_duration != 0) + if (zio->io_spa != handler->zi_spa || + handler->zi_record.zi_cmd != ZINJECT_DATA_FAULT) continue; /* If this handler matches, return EIO */ @@ -197,10 +192,7 @@ zio_handle_label_injection(zio_t *zio, int error) uint64_t start = handler->zi_record.zi_start; uint64_t end = handler->zi_record.zi_end; - /* Ignore device only faults or panic injection */ - if (handler->zi_record.zi_start == 0 || - handler->zi_record.zi_func[0] != '\0' || - handler->zi_record.zi_duration != 0) + if (handler->zi_record.zi_cmd != ZINJECT_LABEL_FAULT) continue; /* @@ -246,13 +238,7 @@ zio_handle_device_injection(vdev_t *vd, zio_t *zio, int error) for (handler = list_head(&inject_handlers); handler != NULL; handler = list_next(&inject_handlers, handler)) { - /* - * Ignore label specific faults, panic injection - * or fake writes - */ - if (handler->zi_record.zi_start != 0 || - handler->zi_record.zi_func[0] != '\0' || - handler->zi_record.zi_duration != 0) + if (handler->zi_record.zi_cmd != ZINJECT_DEVICE_FAULT) continue; if (vd->vdev_guid == handler->zi_record.zi_guid) { @@ -316,10 +302,8 @@ zio_handle_ignored_writes(zio_t *zio) handler = list_next(&inject_handlers, handler)) { /* Ignore errors not destined for this pool */ - if (zio->io_spa != handler->zi_spa) - continue; - - if (handler->zi_record.zi_duration == 0) + if (zio->io_spa != handler->zi_spa || + handler->zi_record.zi_cmd != ZINJECT_IGNORED_WRITES) continue; /* @@ -355,11 +339,8 @@ spa_handle_ignored_writes(spa_t *spa) for (handler = list_head(&inject_handlers); handler != NULL; handler = list_next(&inject_handlers, handler)) { - /* Ignore errors not destined for this pool */ - if (spa != handler->zi_spa) - continue; - - if (handler->zi_record.zi_duration == 0) + if (spa != handler->zi_spa || + handler->zi_record.zi_cmd != ZINJECT_IGNORED_WRITES) continue; if (handler->zi_record.zi_duration > 0) { @@ -379,6 +360,34 @@ spa_handle_ignored_writes(spa_t *spa) rw_exit(&inject_lock); } +uint64_t +zio_handle_io_delay(zio_t *zio) +{ + vdev_t *vd = zio->io_vd; + inject_handler_t *handler; + uint64_t seconds = 0; + + if (zio_injection_enabled == 0) + return (0); + + rw_enter(&inject_lock, RW_READER); + + for (handler = list_head(&inject_handlers); handler != NULL; + handler = list_next(&inject_handlers, handler)) { + + if (handler->zi_record.zi_cmd != ZINJECT_DELAY_IO) + continue; + + if (vd->vdev_guid == handler->zi_record.zi_guid) { + seconds = handler->zi_record.zi_timer; + break; + } + + } + rw_exit(&inject_lock); + return (seconds); +} + /* * Create a new handler for the given record. We add it to the list, adding * a reference to the spa_t in the process. We increment zio_injection_enabled, |
