* CDDL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#include <sys/zfs_context.h>
#include <sys/spa.h>
#include <sys/zio.h>
#include <sys/dmu_impl.h>
+#include <sys/sa.h>
+#include <sys/sa_impl.h>
#include <sys/callb.h>
-#define SET_BOOKMARK(zb, objset, object, level, blkid) \
-{ \
- (zb)->zb_objset = objset; \
- (zb)->zb_object = object; \
- (zb)->zb_level = level; \
- (zb)->zb_blkid = blkid; \
-}
-
struct prefetch_data {
kmutex_t pd_mtx;
kcondvar_t pd_cv;
void *td_arg;
};
+static int traverse_dnode(struct traverse_data *td, const dnode_phys_t *dnp,
+ arc_buf_t *buf, uint64_t objset, uint64_t object);
+
/* ARGSUSED */
-static void
+static int
traverse_zil_block(zilog_t *zilog, blkptr_t *bp, void *arg, uint64_t claim_txg)
{
struct traverse_data *td = arg;
zbookmark_t zb;
if (bp->blk_birth == 0)
- return;
+ return (0);
if (claim_txg == 0 && bp->blk_birth >= spa_first_txg(td->td_spa))
- return;
+ return (0);
+
+ SET_BOOKMARK(&zb, td->td_objset, ZB_ZIL_OBJECT, ZB_ZIL_LEVEL,
+ bp->blk_cksum.zc_word[ZIL_ZC_SEQ]);
- zb.zb_objset = td->td_objset;
- zb.zb_object = 0;
- zb.zb_level = -1;
- zb.zb_blkid = bp->blk_cksum.zc_word[ZIL_ZC_SEQ];
- VERIFY(0 == td->td_func(td->td_spa, bp, &zb, NULL, td->td_arg));
+ (void) td->td_func(td->td_spa, zilog, bp, NULL, &zb, NULL, td->td_arg);
+
+ return (0);
}
/* ARGSUSED */
-static void
+static int
traverse_zil_record(zilog_t *zilog, lr_t *lrc, void *arg, uint64_t claim_txg)
{
struct traverse_data *td = arg;
zbookmark_t zb;
if (bp->blk_birth == 0)
- return;
+ return (0);
if (claim_txg == 0 || bp->blk_birth < claim_txg)
- return;
+ return (0);
+
+ SET_BOOKMARK(&zb, td->td_objset, lr->lr_foid, ZB_ZIL_LEVEL,
+ lr->lr_offset / BP_GET_LSIZE(bp));
- zb.zb_objset = td->td_objset;
- zb.zb_object = lr->lr_foid;
- zb.zb_level = BP_GET_LEVEL(bp);
- zb.zb_blkid = lr->lr_offset / BP_GET_LSIZE(bp);
- VERIFY(0 == td->td_func(td->td_spa, bp, &zb, NULL, td->td_arg));
+ (void) td->td_func(td->td_spa, zilog, bp, NULL, &zb, NULL,
+ td->td_arg);
}
+ return (0);
}
static void
/*
* We only want to visit blocks that have been claimed but not yet
- * replayed (or, in read-only mode, blocks that *would* be claimed).
+ * replayed; plus, in read-only mode, blocks that are already stable.
*/
if (claim_txg == 0 && spa_writeable(td->td_spa))
return;
arc_buf_t *pbuf, blkptr_t *bp, const zbookmark_t *zb)
{
zbookmark_t czb;
- int err = 0;
+ int err = 0, lasterr = 0;
arc_buf_t *buf = NULL;
struct prefetch_data *pd = td->td_pfd;
+ boolean_t hard = td->td_flags & TRAVERSE_HARD;
if (bp->blk_birth == 0) {
- err = td->td_func(td->td_spa, NULL, zb, dnp, td->td_arg);
+ err = td->td_func(td->td_spa, NULL, NULL, pbuf, zb, dnp,
+ td->td_arg);
return (err);
}
}
if (td->td_flags & TRAVERSE_PRE) {
- err = td->td_func(td->td_spa, bp, zb, dnp, td->td_arg);
+ err = td->td_func(td->td_spa, NULL, bp, pbuf, zb, dnp,
+ td->td_arg);
if (err)
return (err);
}
blkptr_t *cbp;
int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
- err = arc_read(NULL, td->td_spa, bp, pbuf,
+ err = dsl_read(NULL, td->td_spa, bp, pbuf,
arc_getbuf_func, &buf,
ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
if (err)
zb->zb_level - 1,
zb->zb_blkid * epb + i);
err = traverse_visitbp(td, dnp, buf, cbp, &czb);
- if (err)
- break;
+ if (err) {
+ if (!hard)
+ break;
+ lasterr = err;
+ }
}
} else if (BP_GET_TYPE(bp) == DMU_OT_DNODE) {
uint32_t flags = ARC_WAIT;
- int i, j;
+ int i;
int epb = BP_GET_LSIZE(bp) >> DNODE_SHIFT;
- err = arc_read(NULL, td->td_spa, bp, pbuf,
+ err = dsl_read(NULL, td->td_spa, bp, pbuf,
arc_getbuf_func, &buf,
ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
if (err)
/* recursively visitbp() blocks below this */
dnp = buf->b_data;
- for (i = 0; i < epb && err == 0; i++, dnp++) {
- for (j = 0; j < dnp->dn_nblkptr; j++) {
- SET_BOOKMARK(&czb, zb->zb_objset,
- zb->zb_blkid * epb + i,
- dnp->dn_nlevels - 1, j);
- err = traverse_visitbp(td, dnp, buf,
- (blkptr_t *)&dnp->dn_blkptr[j], &czb);
- if (err)
+ for (i = 0; i < epb; i++, dnp++) {
+ err = traverse_dnode(td, dnp, buf, zb->zb_objset,
+ zb->zb_blkid * epb + i);
+ if (err) {
+ if (!hard)
break;
+ lasterr = err;
}
}
} else if (BP_GET_TYPE(bp) == DMU_OT_OBJSET) {
uint32_t flags = ARC_WAIT;
objset_phys_t *osp;
- int j;
+ dnode_phys_t *dnp;
- err = arc_read_nolock(NULL, td->td_spa, bp,
+ err = dsl_read_nolock(NULL, td->td_spa, bp,
arc_getbuf_func, &buf,
ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
if (err)
return (err);
osp = buf->b_data;
- /*
- * traverse_zil is just here for zdb's leak checking.
- * For other consumers, there will be no ZIL blocks.
- */
traverse_zil(td, &osp->os_zil_header);
- for (j = 0; j < osp->os_meta_dnode.dn_nblkptr; j++) {
- SET_BOOKMARK(&czb, zb->zb_objset, 0,
- osp->os_meta_dnode.dn_nlevels - 1, j);
- err = traverse_visitbp(td, &osp->os_meta_dnode, buf,
- (blkptr_t *)&osp->os_meta_dnode.dn_blkptr[j],
- &czb);
- if (err)
- break;
+ dnp = &osp->os_meta_dnode;
+ err = traverse_dnode(td, dnp, buf, zb->zb_objset,
+ DMU_META_DNODE_OBJECT);
+ if (err && hard) {
+ lasterr = err;
+ err = 0;
+ }
+ if (err == 0 && arc_buf_size(buf) >= sizeof (objset_phys_t)) {
+ dnp = &osp->os_userused_dnode;
+ err = traverse_dnode(td, dnp, buf, zb->zb_objset,
+ DMU_USERUSED_OBJECT);
+ }
+ if (err && hard) {
+ lasterr = err;
+ err = 0;
+ }
+ if (err == 0 && arc_buf_size(buf) >= sizeof (objset_phys_t)) {
+ dnp = &osp->os_groupused_dnode;
+ err = traverse_dnode(td, dnp, buf, zb->zb_objset,
+ DMU_GROUPUSED_OBJECT);
}
}
if (buf)
(void) arc_buf_remove_ref(buf, &buf);
- if (err == 0 && (td->td_flags & TRAVERSE_POST))
- err = td->td_func(td->td_spa, bp, zb, dnp, td->td_arg);
+ if (err == 0 && lasterr == 0 && (td->td_flags & TRAVERSE_POST)) {
+ err = td->td_func(td->td_spa, NULL, bp, pbuf, zb, dnp,
+ td->td_arg);
+ }
- return (err);
+ return (err != 0 ? err : lasterr);
+}
+
+static int
+traverse_dnode(struct traverse_data *td, const dnode_phys_t *dnp,
+ arc_buf_t *buf, uint64_t objset, uint64_t object)
+{
+ int j, err = 0, lasterr = 0;
+ zbookmark_t czb;
+ boolean_t hard = (td->td_flags & TRAVERSE_HARD);
+
+ for (j = 0; j < dnp->dn_nblkptr; j++) {
+ SET_BOOKMARK(&czb, objset, object, dnp->dn_nlevels - 1, j);
+ err = traverse_visitbp(td, dnp, buf,
+ (blkptr_t *)&dnp->dn_blkptr[j], &czb);
+ if (err) {
+ if (!hard)
+ break;
+ lasterr = err;
+ }
+ }
+
+ if (dnp->dn_flags & DNODE_FLAG_SPILL_BLKPTR) {
+ SET_BOOKMARK(&czb, objset,
+ object, 0, DMU_SPILL_BLKID);
+ err = traverse_visitbp(td, dnp, buf,
+ (blkptr_t *)&dnp->dn_spill, &czb);
+ if (err) {
+ if (!hard)
+ return (err);
+ lasterr = err;
+ }
+ }
+ return (err != 0 ? err : lasterr);
}
/* ARGSUSED */
static int
-traverse_prefetcher(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb,
- const dnode_phys_t *dnp, void *arg)
+traverse_prefetcher(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
+ arc_buf_t *pbuf, const zbookmark_t *zb, const dnode_phys_t *dnp,
+ void *arg)
{
struct prefetch_data *pfd = arg;
uint32_t aflags = ARC_NOWAIT | ARC_PREFETCH;
return (EINTR);
if (bp == NULL || !((pfd->pd_flags & TRAVERSE_PREFETCH_DATA) ||
- BP_GET_TYPE(bp) == DMU_OT_DNODE || BP_GET_LEVEL(bp) > 0))
+ BP_GET_TYPE(bp) == DMU_OT_DNODE || BP_GET_LEVEL(bp) > 0) ||
+ BP_GET_TYPE(bp) == DMU_OT_INTENT_LOG)
return (0);
mutex_enter(&pfd->pd_mtx);
cv_broadcast(&pfd->pd_cv);
mutex_exit(&pfd->pd_mtx);
- (void) arc_read_nolock(NULL, spa, bp, NULL, NULL,
+ (void) dsl_read(NULL, spa, bp, pbuf, NULL, NULL,
ZIO_PRIORITY_ASYNC_READ,
ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE,
&aflags, zb);
td.td_arg = td_main->td_pfd;
td.td_pfd = NULL;
- SET_BOOKMARK(&czb, td.td_objset, 0, -1, 0);
+ SET_BOOKMARK(&czb, td.td_objset,
+ ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
(void) traverse_visitbp(&td, NULL, NULL, td.td_rootbp, &czb);
mutex_enter(&td_main->td_pfd->pd_mtx);
&td, TQ_NOQUEUE))
pd.pd_exited = B_TRUE;
- SET_BOOKMARK(&czb, objset, 0, -1, 0);
+ SET_BOOKMARK(&czb, objset,
+ ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
err = traverse_visitbp(&td, NULL, NULL, rootbp, &czb);
mutex_enter(&pd.pd_mtx);
* NB: pool must not be changing on-disk (eg, from zdb or sync context).
*/
int
-traverse_pool(spa_t *spa, blkptr_cb_t func, void *arg)
+traverse_pool(spa_t *spa, uint64_t txg_start, int flags,
+ blkptr_cb_t func, void *arg)
{
- int err;
+ int err, lasterr = 0;
uint64_t obj;
dsl_pool_t *dp = spa_get_dsl(spa);
objset_t *mos = dp->dp_meta_objset;
+ boolean_t hard = (flags & TRAVERSE_HARD);
/* visit the MOS */
err = traverse_impl(spa, 0, spa_get_rootblkptr(spa),
- 0, TRAVERSE_PRE, func, arg);
+ txg_start, flags, func, arg);
if (err)
return (err);
/* visit each dataset */
- for (obj = 1; err == 0; err = dmu_object_next(mos, &obj, FALSE, 0)) {
+ for (obj = 1; err == 0 || (err != ESRCH && hard);
+ err = dmu_object_next(mos, &obj, FALSE, txg_start)) {
dmu_object_info_t doi;
err = dmu_object_info(mos, obj, &doi);
- if (err)
- return (err);
+ if (err) {
+ if (!hard)
+ return (err);
+ lasterr = err;
+ continue;
+ }
if (doi.doi_type == DMU_OT_DSL_DATASET) {
dsl_dataset_t *ds;
+ uint64_t txg = txg_start;
+
rw_enter(&dp->dp_config_rwlock, RW_READER);
err = dsl_dataset_hold_obj(dp, obj, FTAG, &ds);
rw_exit(&dp->dp_config_rwlock);
- if (err)
- return (err);
- err = traverse_dataset(ds,
- ds->ds_phys->ds_prev_snap_txg, TRAVERSE_PRE,
- func, arg);
+ if (err) {
+ if (!hard)
+ return (err);
+ lasterr = err;
+ continue;
+ }
+ if (ds->ds_phys->ds_prev_snap_txg > txg)
+ txg = ds->ds_phys->ds_prev_snap_txg;
+ err = traverse_dataset(ds, txg, flags, func, arg);
dsl_dataset_rele(ds, FTAG);
- if (err)
- return (err);
+ if (err) {
+ if (!hard)
+ return (err);
+ lasterr = err;
+ }
}
}
if (err == ESRCH)
err = 0;
- return (err);
+ return (err != 0 ? err : lasterr);
}
git://git.camperquake.de / zfs.git / blobdiff