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-rw-r--r--module/zfs/dmu_send.c247
1 files changed, 126 insertions, 121 deletions
diff --git a/module/zfs/dmu_send.c b/module/zfs/dmu_send.c
index 9f9003744..949f4d773 100644
--- a/module/zfs/dmu_send.c
+++ b/module/zfs/dmu_send.c
@@ -23,6 +23,7 @@
* Copyright (c) 2011 by Delphix. All rights reserved.
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2011 by Delphix. All rights reserved.
+ * Copyright (c) 2012, Joyent, Inc. All rights reserved.
*/
#include <sys/dmu.h>
@@ -52,48 +53,30 @@ int zfs_send_corrupt_data = B_FALSE;
static char *dmu_recv_tag = "dmu_recv_tag";
-/*
- * The list of data whose inclusion in a send stream can be pending from
- * one call to backup_cb to another. Multiple calls to dump_free() and
- * dump_freeobjects() can be aggregated into a single DRR_FREE or
- * DRR_FREEOBJECTS replay record.
- */
-typedef enum {
- PENDING_NONE,
- PENDING_FREE,
- PENDING_FREEOBJECTS
-} pendop_t;
-
-struct backuparg {
- dmu_replay_record_t *drr;
- vnode_t *vp;
- offset_t *off;
- objset_t *os;
- zio_cksum_t zc;
- uint64_t toguid;
- int err;
- pendop_t pending_op;
-};
-
static int
-dump_bytes(struct backuparg *ba, void *buf, int len)
+dump_bytes(dmu_sendarg_t *dsp, void *buf, int len)
{
+ dsl_dataset_t *ds = dsp->dsa_os->os_dsl_dataset;
ssize_t resid; /* have to get resid to get detailed errno */
ASSERT3U(len % 8, ==, 0);
- fletcher_4_incremental_native(buf, len, &ba->zc);
- ba->err = vn_rdwr(UIO_WRITE, ba->vp,
+ fletcher_4_incremental_native(buf, len, &dsp->dsa_zc);
+ dsp->dsa_err = vn_rdwr(UIO_WRITE, dsp->dsa_vp,
(caddr_t)buf, len,
0, UIO_SYSSPACE, FAPPEND, RLIM64_INFINITY, CRED(), &resid);
- *ba->off += len;
- return (ba->err);
+
+ mutex_enter(&ds->ds_sendstream_lock);
+ *dsp->dsa_off += len;
+ mutex_exit(&ds->ds_sendstream_lock);
+
+ return (dsp->dsa_err);
}
static int
-dump_free(struct backuparg *ba, uint64_t object, uint64_t offset,
+dump_free(dmu_sendarg_t *dsp, uint64_t object, uint64_t offset,
uint64_t length)
{
- struct drr_free *drrf = &(ba->drr->drr_u.drr_free);
+ struct drr_free *drrf = &(dsp->dsa_drr->drr_u.drr_free);
if (length != -1ULL && offset + length < offset)
length = -1ULL;
@@ -105,13 +88,15 @@ dump_free(struct backuparg *ba, uint64_t object, uint64_t offset,
* other DRR_FREE records. DRR_FREEOBJECTS records can only be
* aggregated with other DRR_FREEOBJECTS records.
*/
- if (ba->pending_op != PENDING_NONE && ba->pending_op != PENDING_FREE) {
- if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
+ if (dsp->dsa_pending_op != PENDING_NONE &&
+ dsp->dsa_pending_op != PENDING_FREE) {
+ if (dump_bytes(dsp, dsp->dsa_drr,
+ sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
- ba->pending_op = PENDING_NONE;
+ dsp->dsa_pending_op = PENDING_NONE;
}
- if (ba->pending_op == PENDING_FREE) {
+ if (dsp->dsa_pending_op == PENDING_FREE) {
/*
* There should never be a PENDING_FREE if length is -1
* (because dump_dnode is the only place where this
@@ -129,34 +114,35 @@ dump_free(struct backuparg *ba, uint64_t object, uint64_t offset,
return (0);
} else {
/* not a continuation. Push out pending record */
- if (dump_bytes(ba, ba->drr,
+ if (dump_bytes(dsp, dsp->dsa_drr,
sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
- ba->pending_op = PENDING_NONE;
+ dsp->dsa_pending_op = PENDING_NONE;
}
}
/* create a FREE record and make it pending */
- bzero(ba->drr, sizeof (dmu_replay_record_t));
- ba->drr->drr_type = DRR_FREE;
+ bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
+ dsp->dsa_drr->drr_type = DRR_FREE;
drrf->drr_object = object;
drrf->drr_offset = offset;
drrf->drr_length = length;
- drrf->drr_toguid = ba->toguid;
+ drrf->drr_toguid = dsp->dsa_toguid;
if (length == -1ULL) {
- if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
+ if (dump_bytes(dsp, dsp->dsa_drr,
+ sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
} else {
- ba->pending_op = PENDING_FREE;
+ dsp->dsa_pending_op = PENDING_FREE;
}
return (0);
}
static int
-dump_data(struct backuparg *ba, dmu_object_type_t type,
+dump_data(dmu_sendarg_t *dsp, dmu_object_type_t type,
uint64_t object, uint64_t offset, int blksz, const blkptr_t *bp, void *data)
{
- struct drr_write *drrw = &(ba->drr->drr_u.drr_write);
+ struct drr_write *drrw = &(dsp->dsa_drr->drr_u.drr_write);
/*
@@ -165,19 +151,20 @@ dump_data(struct backuparg *ba, dmu_object_type_t type,
* the stream, since aggregation can't be done across operations
* of different types.
*/
- if (ba->pending_op != PENDING_NONE) {
- if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
+ if (dsp->dsa_pending_op != PENDING_NONE) {
+ if (dump_bytes(dsp, dsp->dsa_drr,
+ sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
- ba->pending_op = PENDING_NONE;
+ dsp->dsa_pending_op = PENDING_NONE;
}
/* write a DATA record */
- bzero(ba->drr, sizeof (dmu_replay_record_t));
- ba->drr->drr_type = DRR_WRITE;
+ bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
+ dsp->dsa_drr->drr_type = DRR_WRITE;
drrw->drr_object = object;
drrw->drr_type = type;
drrw->drr_offset = offset;
drrw->drr_length = blksz;
- drrw->drr_toguid = ba->toguid;
+ drrw->drr_toguid = dsp->dsa_toguid;
drrw->drr_checksumtype = BP_GET_CHECKSUM(bp);
if (zio_checksum_table[drrw->drr_checksumtype].ci_dedup)
drrw->drr_checksumflags |= DRR_CHECKSUM_DEDUP;
@@ -186,42 +173,43 @@ dump_data(struct backuparg *ba, dmu_object_type_t type,
DDK_SET_COMPRESS(&drrw->drr_key, BP_GET_COMPRESS(bp));
drrw->drr_key.ddk_cksum = bp->blk_cksum;
- if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
+ if (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
- if (dump_bytes(ba, data, blksz) != 0)
+ if (dump_bytes(dsp, data, blksz) != 0)
return (EINTR);
return (0);
}
static int
-dump_spill(struct backuparg *ba, uint64_t object, int blksz, void *data)
+dump_spill(dmu_sendarg_t *dsp, uint64_t object, int blksz, void *data)
{
- struct drr_spill *drrs = &(ba->drr->drr_u.drr_spill);
+ struct drr_spill *drrs = &(dsp->dsa_drr->drr_u.drr_spill);
- if (ba->pending_op != PENDING_NONE) {
- if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
+ if (dsp->dsa_pending_op != PENDING_NONE) {
+ if (dump_bytes(dsp, dsp->dsa_drr,
+ sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
- ba->pending_op = PENDING_NONE;
+ dsp->dsa_pending_op = PENDING_NONE;
}
/* write a SPILL record */
- bzero(ba->drr, sizeof (dmu_replay_record_t));
- ba->drr->drr_type = DRR_SPILL;
+ bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
+ dsp->dsa_drr->drr_type = DRR_SPILL;
drrs->drr_object = object;
drrs->drr_length = blksz;
- drrs->drr_toguid = ba->toguid;
+ drrs->drr_toguid = dsp->dsa_toguid;
- if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)))
+ if (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)))
return (EINTR);
- if (dump_bytes(ba, data, blksz))
+ if (dump_bytes(dsp, data, blksz))
return (EINTR);
return (0);
}
static int
-dump_freeobjects(struct backuparg *ba, uint64_t firstobj, uint64_t numobjs)
+dump_freeobjects(dmu_sendarg_t *dsp, uint64_t firstobj, uint64_t numobjs)
{
- struct drr_freeobjects *drrfo = &(ba->drr->drr_u.drr_freeobjects);
+ struct drr_freeobjects *drrfo = &(dsp->dsa_drr->drr_u.drr_freeobjects);
/*
* If there is a pending op, but it's not PENDING_FREEOBJECTS,
@@ -230,13 +218,14 @@ dump_freeobjects(struct backuparg *ba, uint64_t firstobj, uint64_t numobjs)
* aggregated with other DRR_FREE records. DRR_FREEOBJECTS records
* can only be aggregated with other DRR_FREEOBJECTS records.
*/
- if (ba->pending_op != PENDING_NONE &&
- ba->pending_op != PENDING_FREEOBJECTS) {
- if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
+ if (dsp->dsa_pending_op != PENDING_NONE &&
+ dsp->dsa_pending_op != PENDING_FREEOBJECTS) {
+ if (dump_bytes(dsp, dsp->dsa_drr,
+ sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
- ba->pending_op = PENDING_NONE;
+ dsp->dsa_pending_op = PENDING_NONE;
}
- if (ba->pending_op == PENDING_FREEOBJECTS) {
+ if (dsp->dsa_pending_op == PENDING_FREEOBJECTS) {
/*
* See whether this free object array can be aggregated
* with pending one
@@ -246,42 +235,43 @@ dump_freeobjects(struct backuparg *ba, uint64_t firstobj, uint64_t numobjs)
return (0);
} else {
/* can't be aggregated. Push out pending record */
- if (dump_bytes(ba, ba->drr,
+ if (dump_bytes(dsp, dsp->dsa_drr,
sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
- ba->pending_op = PENDING_NONE;
+ dsp->dsa_pending_op = PENDING_NONE;
}
}
/* write a FREEOBJECTS record */
- bzero(ba->drr, sizeof (dmu_replay_record_t));
- ba->drr->drr_type = DRR_FREEOBJECTS;
+ bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
+ dsp->dsa_drr->drr_type = DRR_FREEOBJECTS;
drrfo->drr_firstobj = firstobj;
drrfo->drr_numobjs = numobjs;
- drrfo->drr_toguid = ba->toguid;
+ drrfo->drr_toguid = dsp->dsa_toguid;
- ba->pending_op = PENDING_FREEOBJECTS;
+ dsp->dsa_pending_op = PENDING_FREEOBJECTS;
return (0);
}
static int
-dump_dnode(struct backuparg *ba, uint64_t object, dnode_phys_t *dnp)
+dump_dnode(dmu_sendarg_t *dsp, uint64_t object, dnode_phys_t *dnp)
{
- struct drr_object *drro = &(ba->drr->drr_u.drr_object);
+ struct drr_object *drro = &(dsp->dsa_drr->drr_u.drr_object);
if (dnp == NULL || dnp->dn_type == DMU_OT_NONE)
- return (dump_freeobjects(ba, object, 1));
+ return (dump_freeobjects(dsp, object, 1));
- if (ba->pending_op != PENDING_NONE) {
- if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
+ if (dsp->dsa_pending_op != PENDING_NONE) {
+ if (dump_bytes(dsp, dsp->dsa_drr,
+ sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
- ba->pending_op = PENDING_NONE;
+ dsp->dsa_pending_op = PENDING_NONE;
}
/* write an OBJECT record */
- bzero(ba->drr, sizeof (dmu_replay_record_t));
- ba->drr->drr_type = DRR_OBJECT;
+ bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
+ dsp->dsa_drr->drr_type = DRR_OBJECT;
drro->drr_object = object;
drro->drr_type = dnp->dn_type;
drro->drr_bonustype = dnp->dn_bonustype;
@@ -289,19 +279,19 @@ dump_dnode(struct backuparg *ba, uint64_t object, dnode_phys_t *dnp)
drro->drr_bonuslen = dnp->dn_bonuslen;
drro->drr_checksumtype = dnp->dn_checksum;
drro->drr_compress = dnp->dn_compress;
- drro->drr_toguid = ba->toguid;
+ drro->drr_toguid = dsp->dsa_toguid;
- if (dump_bytes(ba, ba->drr, sizeof (dmu_replay_record_t)) != 0)
+ if (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
- if (dump_bytes(ba, DN_BONUS(dnp), P2ROUNDUP(dnp->dn_bonuslen, 8)) != 0)
+ if (dump_bytes(dsp, DN_BONUS(dnp), P2ROUNDUP(dnp->dn_bonuslen, 8)) != 0)
return (EINTR);
/* free anything past the end of the file */
- if (dump_free(ba, object, (dnp->dn_maxblkid + 1) *
+ if (dump_free(dsp, object, (dnp->dn_maxblkid + 1) *
(dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT), -1ULL))
return (EINTR);
- if (ba->err)
+ if (dsp->dsa_err)
return (EINTR);
return (0);
}
@@ -315,7 +305,7 @@ static int
backup_cb(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 backuparg *ba = arg;
+ dmu_sendarg_t *dsp = arg;
dmu_object_type_t type = bp ? BP_GET_TYPE(bp) : DMU_OT_NONE;
int err = 0;
@@ -328,10 +318,10 @@ backup_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
} else if (bp == NULL && zb->zb_object == DMU_META_DNODE_OBJECT) {
uint64_t span = BP_SPAN(dnp, zb->zb_level);
uint64_t dnobj = (zb->zb_blkid * span) >> DNODE_SHIFT;
- err = dump_freeobjects(ba, dnobj, span >> DNODE_SHIFT);
+ err = dump_freeobjects(dsp, dnobj, span >> DNODE_SHIFT);
} else if (bp == NULL) {
uint64_t span = BP_SPAN(dnp, zb->zb_level);
- err = dump_free(ba, zb->zb_object, zb->zb_blkid * span, span);
+ err = dump_free(dsp, zb->zb_object, zb->zb_blkid * span, span);
} else if (zb->zb_level > 0 || type == DMU_OT_OBJSET) {
return (0);
} else if (type == DMU_OT_DNODE) {
@@ -350,7 +340,7 @@ backup_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
for (i = 0; i < blksz >> DNODE_SHIFT; i++) {
uint64_t dnobj = (zb->zb_blkid <<
(DNODE_BLOCK_SHIFT - DNODE_SHIFT)) + i;
- err = dump_dnode(ba, dnobj, blk+i);
+ err = dump_dnode(dsp, dnobj, blk+i);
if (err)
break;
}
@@ -365,7 +355,7 @@ backup_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
ZIO_FLAG_CANFAIL, &aflags, zb) != 0)
return (EIO);
- err = dump_spill(ba, zb->zb_object, blksz, abuf->b_data);
+ err = dump_spill(dsp, zb->zb_object, blksz, abuf->b_data);
(void) arc_buf_remove_ref(abuf, &abuf);
} else { /* it's a level-0 block of a regular object */
uint32_t aflags = ARC_WAIT;
@@ -389,7 +379,7 @@ backup_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
}
}
- err = dump_data(ba, type, zb->zb_object, zb->zb_blkid * blksz,
+ err = dump_data(dsp, type, zb->zb_object, zb->zb_blkid * blksz,
blksz, bp, abuf->b_data);
(void) arc_buf_remove_ref(abuf, &abuf);
}
@@ -399,13 +389,13 @@ backup_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf,
}
int
-dmu_sendbackup(objset_t *tosnap, objset_t *fromsnap, boolean_t fromorigin,
- vnode_t *vp, offset_t *off)
+dmu_send(objset_t *tosnap, objset_t *fromsnap, boolean_t fromorigin,
+ int outfd, vnode_t *vp, offset_t *off)
{
dsl_dataset_t *ds = tosnap->os_dsl_dataset;
dsl_dataset_t *fromds = fromsnap ? fromsnap->os_dsl_dataset : NULL;
dmu_replay_record_t *drr;
- struct backuparg ba;
+ dmu_sendarg_t *dsp;
int err;
uint64_t fromtxg = 0;
@@ -446,8 +436,10 @@ dmu_sendbackup(objset_t *tosnap, objset_t *fromsnap, boolean_t fromorigin,
#ifdef _KERNEL
if (dmu_objset_type(tosnap) == DMU_OST_ZFS) {
uint64_t version;
- if (zfs_get_zplprop(tosnap, ZFS_PROP_VERSION, &version) != 0)
+ if (zfs_get_zplprop(tosnap, ZFS_PROP_VERSION, &version) != 0) {
+ kmem_free(drr, sizeof (dmu_replay_record_t));
return (EINVAL);
+ }
if (version == ZPL_VERSION_SA) {
DMU_SET_FEATUREFLAGS(
drr->drr_u.drr_begin.drr_versioninfo,
@@ -474,46 +466,59 @@ dmu_sendbackup(objset_t *tosnap, objset_t *fromsnap, boolean_t fromorigin,
if (fromorigin)
dsl_dataset_rele(fromds, FTAG);
- ba.drr = drr;
- ba.vp = vp;
- ba.os = tosnap;
- ba.off = off;
- ba.toguid = ds->ds_phys->ds_guid;
- ZIO_SET_CHECKSUM(&ba.zc, 0, 0, 0, 0);
- ba.pending_op = PENDING_NONE;
-
- if (dump_bytes(&ba, drr, sizeof (dmu_replay_record_t)) != 0) {
- kmem_free(drr, sizeof (dmu_replay_record_t));
- return (ba.err);
+ dsp = kmem_zalloc(sizeof (dmu_sendarg_t), KM_SLEEP);
+
+ dsp->dsa_drr = drr;
+ dsp->dsa_vp = vp;
+ dsp->dsa_outfd = outfd;
+ dsp->dsa_proc = curproc;
+ dsp->dsa_os = tosnap;
+ dsp->dsa_off = off;
+ dsp->dsa_toguid = ds->ds_phys->ds_guid;
+ ZIO_SET_CHECKSUM(&dsp->dsa_zc, 0, 0, 0, 0);
+ dsp->dsa_pending_op = PENDING_NONE;
+
+ mutex_enter(&ds->ds_sendstream_lock);
+ list_insert_head(&ds->ds_sendstreams, dsp);
+ mutex_exit(&ds->ds_sendstream_lock);
+
+ if (dump_bytes(dsp, drr, sizeof (dmu_replay_record_t)) != 0) {
+ err = dsp->dsa_err;
+ goto out;
}
err = traverse_dataset(ds, fromtxg, TRAVERSE_PRE | TRAVERSE_PREFETCH,
- backup_cb, &ba);
+ backup_cb, dsp);
- if (ba.pending_op != PENDING_NONE)
- if (dump_bytes(&ba, drr, sizeof (dmu_replay_record_t)) != 0)
+ if (dsp->dsa_pending_op != PENDING_NONE)
+ if (dump_bytes(dsp, drr, sizeof (dmu_replay_record_t)) != 0)
err = EINTR;
if (err) {
- if (err == EINTR && ba.err)
- err = ba.err;
- kmem_free(drr, sizeof (dmu_replay_record_t));
- return (err);
+ if (err == EINTR && dsp->dsa_err)
+ err = dsp->dsa_err;
+ goto out;
}
bzero(drr, sizeof (dmu_replay_record_t));
drr->drr_type = DRR_END;
- drr->drr_u.drr_end.drr_checksum = ba.zc;
- drr->drr_u.drr_end.drr_toguid = ba.toguid;
+ drr->drr_u.drr_end.drr_checksum = dsp->dsa_zc;
+ drr->drr_u.drr_end.drr_toguid = dsp->dsa_toguid;
- if (dump_bytes(&ba, drr, sizeof (dmu_replay_record_t)) != 0) {
- kmem_free(drr, sizeof (dmu_replay_record_t));
- return (ba.err);
+ if (dump_bytes(dsp, drr, sizeof (dmu_replay_record_t)) != 0) {
+ err = dsp->dsa_err;
+ goto out;
}
+out:
+ mutex_enter(&ds->ds_sendstream_lock);
+ list_remove(&ds->ds_sendstreams, dsp);
+ mutex_exit(&ds->ds_sendstream_lock);
+
kmem_free(drr, sizeof (dmu_replay_record_t));
+ kmem_free(dsp, sizeof (dmu_sendarg_t));
- return (0);
+ return (err);
}
int
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 01:18:20 +0000